0001171843-24-006440 | 10-K | XBRL Viewer | Northern Technologies International Corp

Note 8 - Stockholders' Equity

12 Months Ended

Aug. 31, 2024

8.	STOCKHOLDERS’ EQUITY

During fiscal 2024, NTIC’s Board of Directors declared cash dividends on the following dates in the following amounts to holders of record of NTIC common stock as of the following record dates:

Declaration Date	Amount	Record Date	Payable Date
October 18, 2023	$0.07	November 1, 2023	November 15, 2023
January 17, 2024	$0.07	January 31, 2024	February 14, 2024
April 17, 2024	$0.07	May 1, 2024	May 15, 2024
July 17, 2024	$0.07	July 31, 2024	August 14, 2024

During fiscal 2023, NTIC’s Board of Directors declared cash dividends on the following dates in the following amounts to holders of record of NTIC common stock as of the following record dates:

Declaration Date	Amount	Record Date	Payable Date
October 20, 2022	$0.07	November 3, 2022	November 16, 2022
January 20, 2023	$0.07	February 1, 2023	February 15, 2023
April 21, 2023	$0.07	May 3, 2023	May 17, 2023
July 17, 2023	$0.07	August 2, 2023	August 16, 2023

During fiscal 2024 and fiscal 2023, the Company repurchased no shares of its common stock.

During fiscal 2024, the Company granted stock options under the Northern Technologies International Corporation 2019 Stock Incentive Plan (as amended, the 2019 Plan) and the Northern Technologies International Corporation 2024 Stock Incentive Plan (the 2024 Plan) to purchase an aggregate of 269,844 shares of its common stock to various employees and directors. The weighted average per share exercise price of the stock options is $13.25. The exercise price of the stock options is equal to the fair market value of the Company’s common stock on the date of grant. During fiscal 2024, stock options to purchase an aggregate of 74,309 shares of common stock were exercised at a weighted average exercise price of $9.76 per share, resulting in the net issuance of 36,094 shares of common stock since some of the options were exercised on a net cashless exercise basis.

During fiscal 2023, the Company granted stock options under the 2019 Plan to purchase an aggregate of 277,613 shares of its common stock to various employees and directors. The weighted average per share exercise price of the stock options is $11.41. The exercise price of the stock options is equal to the fair market value of the Company’s common stock on the date of grant. During fiscal 2023, stock options to purchase an aggregate of 265,209 shares of common stock were exercised at a weighted average exercise price of $6.46 per share, resulting in the net issuance of 184,432 shares of common stock since some of the options were exercised on a net cashless exercise basis.

The Company issued 3,496 and 3,620 shares of common stock on September 1, 2023 and 2022, respectively, under the Northern Technologies International Corporation Employee Stock Purchase Plan (ESPP). The Company issued 3,284 and 3,566 shares of common stock on March 1, 2024 and 2023, respectively, under the ESPP. The ESPP is compensatory for financial reporting purposes. As of August 31, 2024, 55,254 shares of common stock remained available for sale under the ESPP.

- Definition

The entire disclosure for equity.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 505
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 13
-Subparagraph (b)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147481112/505-10-50-13

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Topic 505
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 13
-Subparagraph (h)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147481112/505-10-50-13

Reference 3: http://www.xbrl.org/2003/role/disclosureRef
-Topic 505
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 14
-Subparagraph (b)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147481112/505-10-50-14

Reference 4: http://www.xbrl.org/2003/role/disclosureRef
-Topic 946
-SubTopic 235
-Name Accounting Standards Codification
-Section 50
-Paragraph 2
-Subparagraph (a)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147477968/946-235-50-2

Reference 5: http://www.xbrl.org/2003/role/disclosureRef
-Topic 946
-SubTopic 235
-Name Accounting Standards Codification
-Section 50
-Paragraph 2
-Subparagraph (d)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147477968/946-235-50-2

Reference 6: http://www.xbrl.org/2003/role/disclosureRef
-Topic 946
-SubTopic 505
-Name Accounting Standards Codification
-Section 50
-Paragraph 6
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147478448/946-505-50-6

Reference 7: http://www.xbrl.org/2003/role/disclosureRef
-Topic 815
-SubTopic 40
-Name Accounting Standards Codification
-Section 50
-Paragraph 6
-Subparagraph (a)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480237/815-40-50-6

Reference 8: http://www.xbrl.org/2003/role/disclosureRef
-Topic 505
-SubTopic 10
-Name Accounting Standards Codification
-Section S99
-Paragraph 1
-Subparagraph (SX 210.3-04)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480008/505-10-S99-1

Reference 9: http://www.xbrl.org/2003/role/disclosureRef
-Topic 235
-SubTopic 10
-Name Accounting Standards Codification
-Section S99
-Paragraph 1
-Subparagraph (SX 210.4-08(e)(1))
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480678/235-10-S99-1

Reference 10: http://fasb.org/us-gaap/role/ref/legacyRef
-Topic 505
-Name Accounting Standards Codification
-Publisher FASB
-URI https://asc.fasb.org/505/tableOfContent

Reference 11: http://www.xbrl.org/2003/role/disclosureRef
-Topic 505
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 13
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147481112/505-10-50-13

Reference 12: http://www.xbrl.org/2003/role/disclosureRef
-Topic 505
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 13
-Subparagraph (g)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147481112/505-10-50-13

Reference 13: http://www.xbrl.org/2003/role/disclosureRef
-Topic 505
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 13
-Subparagraph (i)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147481112/505-10-50-13

Reference 14: http://www.xbrl.org/2003/role/disclosureRef
-Topic 505
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 14
-Subparagraph (a)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147481112/505-10-50-14

Reference 15: http://www.xbrl.org/2003/role/disclosureRef
-Topic 505
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 14
-Subparagraph (c)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147481112/505-10-50-14

Reference 16: http://www.xbrl.org/2003/role/disclosureRef
-Topic 505
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 16
-Subparagraph (b)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147481112/505-10-50-16

Reference 17: http://www.xbrl.org/2003/role/disclosureRef
-Topic 505
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 18
-Subparagraph (a)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147481112/505-10-50-18

Reference 18: http://www.xbrl.org/2003/role/disclosureRef
-Topic 505
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 18
-Subparagraph (b)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147481112/505-10-50-18

Reference 19: http://www.xbrl.org/2003/role/disclosureRef
-Topic 505
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 18
-Subparagraph (d)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147481112/505-10-50-18

+ Details

Note 17 - Subsequent Events

12 Months Ended

Aug. 31, 2024

Notes to Financial Statements

Subsequent Events [Text Block]

17.

SUBSEQUENT EVENTS

On October 16, 2024, the Company’s Board of Directors declared a cash dividend of $0.07 per share of the Company’s common stock, payable on November 13, 2024 to stockholders of record on October 30, 2024. The declaration of future dividends is not guaranteed and will be determined by the Company’s Board of Directors in light of conditions then existing, including the Company’s earnings, financial condition, cash requirements, restrictions in financing agreements, business conditions, and other factors.

Note 9 - Net Income Per Common Share - Reconciliation of the Earnings Per Share Computations (Details) - USD ($)	12 Months Ended
	Aug. 31, 2024	Aug. 31, 2023
Net income	$ 5,409,082	$ 2,912,276
Basic-weighted shares outstanding (in shares)	9,434,020	9,359,504
Weighted shares assumed upon exercise of stock options (in shares)	399,430	333,978
Diluted – weighted shares outstanding (in shares)	9,833,450	9,693,482
Basic net income per share: (in dollars per share)	$ 0.57	$ 0.31
Diluted net income per share: (in dollars per share)	$ 0.55	$ 0.3

- Definition

The amount of net income (loss) for the period per each share of common stock or unit outstanding during the reporting period.

+ References

+ Details

- Definition

The amount of net income (loss) for the period available to each share of common stock or common unit outstanding during the reporting period and to each share or unit that would have been outstanding assuming the issuance of common shares or units for all dilutive potential common shares or units outstanding during the reporting period.

+ References

+ Details

- Definition

The portion of profit or loss for the period, net of income taxes, which is attributable to the parent.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 250
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 6
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147483443/250-10-50-6

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Topic 250
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 9
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147483443/250-10-50-9

Reference 3: http://www.xbrl.org/2003/role/disclosureRef
-Topic 805
-SubTopic 60
-Name Accounting Standards Codification
-Section 65
-Paragraph 1
-Subparagraph (g)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147476176/805-60-65-1

Reference 4: http://www.xbrl.org/2003/role/disclosureRef
-Topic 740
-SubTopic 323
-Name Accounting Standards Codification
-Section 65
-Paragraph 2
-Subparagraph (g)(3)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147478666/740-323-65-2

Reference 5: http://fasb.org/us-gaap/role/ref/legacyRef
-Topic 220
-SubTopic 10
-Name Accounting Standards Codification
-Section S99
-Paragraph 2
-Subparagraph (SX 210.5-03(20))
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147483621/220-10-S99-2

Reference 6: http://www.xbrl.org/2003/role/disclosureRef
-Topic 235
-SubTopic 10
-Name Accounting Standards Codification
-Section S99
-Paragraph 1
-Subparagraph (SX 210.4-08(g)(1)(ii))
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480678/235-10-S99-1

Reference 7: http://www.xbrl.org/2003/role/disclosureRef
-Topic 323
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 3
-Subparagraph (c)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147481687/323-10-50-3

Reference 8: http://www.xbrl.org/2003/role/disclosureRef
-Topic 825
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 28
-Subparagraph (f)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482907/825-10-50-28

Reference 9: http://www.xbrl.org/2003/role/disclosureRef
-Topic 220
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 6
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482765/220-10-50-6

Reference 10: http://www.xbrl.org/2003/role/disclosureRef
-Topic 250
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 3
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147483443/250-10-50-3

Reference 11: http://www.xbrl.org/2003/role/disclosureRef
-Topic 250
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 1
-Subparagraph (b)(2)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147483443/250-10-50-1

Reference 12: http://www.xbrl.org/2003/role/disclosureRef
-Topic 815
-SubTopic 40
-Name Accounting Standards Codification
-Section 65
-Paragraph 1
-Subparagraph (f)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480175/815-40-65-1

Reference 13: http://www.xbrl.org/2003/role/disclosureRef
-Topic 250
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 8
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147483443/250-10-50-8

Reference 14: http://www.xbrl.org/2003/role/disclosureRef
-Topic 250
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 11
-Subparagraph (a)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147483443/250-10-50-11

Reference 15: http://www.xbrl.org/2003/role/disclosureRef
-Topic 250
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 11
-Subparagraph (b)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147483443/250-10-50-11

Reference 16: http://www.xbrl.org/2003/role/disclosureRef
-Topic 250
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 4
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147483443/250-10-50-4

Reference 17: http://www.xbrl.org/2003/role/exampleRef
-Topic 946
-SubTopic 830
-Name Accounting Standards Codification
-Section 55
-Paragraph 10
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147479168/946-830-55-10

Reference 18: http://www.xbrl.org/2003/role/disclosureRef
-Topic 946
-SubTopic 220
-Name Accounting Standards Codification
-Section 45
-Paragraph 7
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147479105/946-220-45-7

Reference 19: http://www.xbrl.org/2003/role/disclosureRef
-Topic 944
-SubTopic 220
-Name Accounting Standards Codification
-Section S99
-Paragraph 1
-Subparagraph (SX 210.7-04(18))
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147477250/944-220-S99-1

Reference 20: http://www.xbrl.org/2003/role/disclosureRef
-Topic 946
-SubTopic 220
-Name Accounting Standards Codification
-Section S99
-Paragraph 1
-Subparagraph (SX 210.6-07(9))
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147479134/946-220-S99-1

Reference 21: http://www.xbrl.org/2003/role/disclosureRef
-Topic 946
-SubTopic 220
-Name Accounting Standards Codification
-Section S99
-Paragraph 3
-Subparagraph (SX 210.6-09(1)(d))
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147479134/946-220-S99-3

Reference 22: http://www.xbrl.org/2003/role/disclosureRef
-Topic 470
-SubTopic 10
-Name Accounting Standards Codification
-Section S99
-Paragraph 1A
-Subparagraph (SX 210.13-01(a)(4)(i))
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480097/470-10-S99-1A

Reference 23: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 470
-SubTopic 10
-Name Accounting Standards Codification
-Section S99
-Paragraph 1A
-Subparagraph (SX 210.13-01(a)(4)(ii))
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480097/470-10-S99-1A

Reference 24: http://www.xbrl.org/2003/role/disclosureRef
-Topic 470
-SubTopic 10
-Name Accounting Standards Codification
-Section S99
-Paragraph 1A
-Subparagraph (SX 210.13-01(a)(4)(iii)(A))
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480097/470-10-S99-1A

Reference 25: http://www.xbrl.org/2003/role/disclosureRef
-Topic 470
-SubTopic 10
-Name Accounting Standards Codification
-Section S99
-Paragraph 1A
-Subparagraph (SX 210.13-01(a)(4)(iv))
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480097/470-10-S99-1A

Reference 26: http://www.xbrl.org/2003/role/disclosureRef
-Topic 470
-SubTopic 10
-Name Accounting Standards Codification
-Section S99
-Paragraph 1A
-Subparagraph (SX 210.13-01(a)(5))
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480097/470-10-S99-1A

Reference 27: http://www.xbrl.org/2003/role/disclosureRef
-Topic 470
-SubTopic 10
-Name Accounting Standards Codification
-Section S99
-Paragraph 1B
-Subparagraph (SX 210.13-02(a)(4)(i))
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480097/470-10-S99-1B

Reference 28: http://www.xbrl.org/2003/role/disclosureRef
-Topic 470
-SubTopic 10
-Name Accounting Standards Codification
-Section S99
-Paragraph 1B
-Subparagraph (SX 210.13-02(a)(4)(iii)(A))
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480097/470-10-S99-1B

Reference 29: http://www.xbrl.org/2003/role/disclosureRef
-Topic 470
-SubTopic 10
-Name Accounting Standards Codification
-Section S99
-Paragraph 1B
-Subparagraph (SX 210.13-02(a)(4)(iii)(B))
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480097/470-10-S99-1B

Reference 30: http://www.xbrl.org/2003/role/disclosureRef
-Topic 470
-SubTopic 10
-Name Accounting Standards Codification
-Section S99
-Paragraph 1B
-Subparagraph (SX 210.13-02(a)(4)(iv))
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480097/470-10-S99-1B

Reference 31: http://www.xbrl.org/2003/role/disclosureRef
-Topic 470
-SubTopic 10
-Name Accounting Standards Codification
-Section S99
-Paragraph 1B
-Subparagraph (SX 210.13-02(a)(5))
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480097/470-10-S99-1B

Reference 32: http://www.xbrl.org/2003/role/disclosureRef
-Topic 260
-SubTopic 10
-Name Accounting Standards Codification
-Section 45
-Paragraph 60B
-Subparagraph (a)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482689/260-10-45-60B

Reference 33: http://www.xbrl.org/2003/role/disclosureRef
-Topic 205
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 7
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147483499/205-20-50-7

Reference 34: http://fasb.org/us-gaap/role/ref/legacyRef
-Topic 230
-SubTopic 10
-Name Accounting Standards Codification
-Section 45
-Paragraph 28
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482740/230-10-45-28

Reference 35: http://www.xbrl.org/2003/role/disclosureRef
-Topic 220
-SubTopic 10
-Name Accounting Standards Codification
-Section 45
-Paragraph 1A
-Subparagraph (a)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482790/220-10-45-1A

Reference 36: http://www.xbrl.org/2003/role/disclosureRef
-Topic 220
-SubTopic 10
-Name Accounting Standards Codification
-Section 45
-Paragraph 1B
-Subparagraph (a)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482790/220-10-45-1B

Reference 37: http://fasb.org/us-gaap/role/ref/legacyRef
-Topic 942
-SubTopic 220
-Name Accounting Standards Codification
-Section S99
-Paragraph 1
-Subparagraph (SX 210.9-04(22))
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147478524/942-220-S99-1

+ Details

Note 11 - Segment and Geographic Information - Net Sales by Geographic Location (Details) - USD ($)	12 Months Ended
	Aug. 31, 2024	Aug. 31, 2023
Net sales	$ 85,059,517	$ 79,902,952
Inside the USA to Unaffiliated Customers [Member]
Net sales	30,492,665	28,554,354
Joint Ventures in Which the Company is a Shareholder Directly and Indirectly Outside the USA [Member]
Net sales	2,228,894	3,401,910
Unaffiliated Customers Outside the USA [Member]
Net sales	$ 52,337,958	$ 47,946,688

- Definition

Amount of revenue recognized from goods sold, services rendered, insurance premiums, or other activities that constitute an earning process. Includes, but is not limited to, investment and interest income before deduction of interest expense when recognized as a component of revenue, and sales and trading gain (loss).

+ References

Reference 1: http://www.xbrl.org/2003/role/exampleRef
-Topic 280
-SubTopic 10
-Name Accounting Standards Codification
-Section 55
-Paragraph 48
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482785/280-10-55-48

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Topic 280
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 41
-Subparagraph (a)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482810/280-10-50-41

Reference 3: http://www.xbrl.org/2003/role/disclosureRef
-Topic 270
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 1
-Subparagraph (i)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482964/270-10-50-1

Reference 4: http://www.xbrl.org/2003/role/disclosureRef
-Topic 280
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 32
-Subparagraph (ee)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482810/280-10-50-32

Reference 5: http://fasb.org/us-gaap/role/ref/otherTransitionRef
-Topic 280
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 32
-Subparagraph (b)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482810/280-10-50-32

Reference 6: http://fasb.org/us-gaap/role/ref/otherTransitionRef
-Topic 280
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 32
-Subparagraph (a)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482810/280-10-50-32

Reference 7: http://www.xbrl.org/2003/role/disclosureRef
-Topic 235
-SubTopic 10
-Name Accounting Standards Codification
-Section S99
-Paragraph 1
-Subparagraph (SX 210.4-08(g)(1)(ii))
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480678/235-10-S99-1

Reference 8: http://www.xbrl.org/2003/role/disclosureRef
-Topic 323
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 3
-Subparagraph (c)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147481687/323-10-50-3

Reference 9: http://www.xbrl.org/2003/role/disclosureRef
-Topic 825
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 28
-Subparagraph (f)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482907/825-10-50-28

Reference 10: http://www.xbrl.org/2003/role/disclosureRef
-Topic 470
-SubTopic 10
-Name Accounting Standards Codification
-Section S99
-Paragraph 1A
-Subparagraph (SX 210.13-01(a)(4)(i))
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480097/470-10-S99-1A

Reference 11: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 470
-SubTopic 10
-Name Accounting Standards Codification
-Section S99
-Paragraph 1A
-Subparagraph (SX 210.13-01(a)(4)(ii))
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480097/470-10-S99-1A

Reference 12: http://www.xbrl.org/2003/role/disclosureRef
-Topic 470
-SubTopic 10
-Name Accounting Standards Codification
-Section S99
-Paragraph 1A
-Subparagraph (SX 210.13-01(a)(4)(iii)(A))
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480097/470-10-S99-1A

Reference 13: http://www.xbrl.org/2003/role/disclosureRef
-Topic 470
-SubTopic 10
-Name Accounting Standards Codification
-Section S99
-Paragraph 1A
-Subparagraph (SX 210.13-01(a)(4)(iv))
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480097/470-10-S99-1A

Reference 14: http://www.xbrl.org/2003/role/disclosureRef
-Topic 470
-SubTopic 10
-Name Accounting Standards Codification
-Section S99
-Paragraph 1A
-Subparagraph (SX 210.13-01(a)(5))
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480097/470-10-S99-1A

Reference 15: http://www.xbrl.org/2003/role/disclosureRef
-Topic 470
-SubTopic 10
-Name Accounting Standards Codification
-Section S99
-Paragraph 1B
-Subparagraph (SX 210.13-02(a)(4)(i))
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480097/470-10-S99-1B

Reference 16: http://www.xbrl.org/2003/role/disclosureRef
-Topic 470
-SubTopic 10
-Name Accounting Standards Codification
-Section S99
-Paragraph 1B
-Subparagraph (SX 210.13-02(a)(4)(iii)(A))
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480097/470-10-S99-1B

Reference 17: http://www.xbrl.org/2003/role/disclosureRef
-Topic 470
-SubTopic 10
-Name Accounting Standards Codification
-Section S99
-Paragraph 1B
-Subparagraph (SX 210.13-02(a)(4)(iii)(B))
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480097/470-10-S99-1B

Reference 18: http://www.xbrl.org/2003/role/disclosureRef
-Topic 470
-SubTopic 10
-Name Accounting Standards Codification
-Section S99
-Paragraph 1B
-Subparagraph (SX 210.13-02(a)(4)(iv))
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480097/470-10-S99-1B

Reference 19: http://www.xbrl.org/2003/role/disclosureRef
-Topic 470
-SubTopic 10
-Name Accounting Standards Codification
-Section S99
-Paragraph 1B
-Subparagraph (SX 210.13-02(a)(5))
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480097/470-10-S99-1B

Reference 20: http://www.xbrl.org/2003/role/disclosureRef
-Topic 280
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 30
-Subparagraph (a)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482810/280-10-50-30

Reference 21: http://www.xbrl.org/2003/role/disclosureRef
-Topic 280
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 42
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482810/280-10-50-42

Reference 22: http://www.xbrl.org/2003/role/disclosureRef
-Topic 280
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 22
-Subparagraph (b)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482810/280-10-50-22

Reference 23: http://www.xbrl.org/2003/role/disclosureRef
-Topic 280
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 40
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482810/280-10-50-40

Reference 24: http://www.xbrl.org/2003/role/disclosureRef
-Topic 280
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 22
-Subparagraph (a)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482810/280-10-50-22

Reference 25: http://www.xbrl.org/2003/role/disclosureRef
-Topic 942
-SubTopic 235
-Name Accounting Standards Codification
-Section S99
-Paragraph 1
-Subparagraph (SX 210.9-05(b)(2))
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147477314/942-235-S99-1

Reference 26: http://www.xbrl.org/2003/role/disclosureRef
-Topic 220
-SubTopic 10
-Name Accounting Standards Codification
-Section S99
-Paragraph 2
-Subparagraph (SX 210.5-03(1))
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147483621/220-10-S99-2

+ Details

Consolidated Statements of Equity - USD ($)	Common Stock [Member]	Additional Paid-in Capital [Member]	Retained Earnings [Member]	AOCI Attributable to Parent [Member]	Noncontrolling Interest [Member]	Total
BALANCE (in shares) at Aug. 31, 2022	9,232,484
BALANCE at Aug. 31, 2022	$ 184,650	$ 19,939,131	$ 50,716,613	$ (7,245,132)	$ 3,649,034	$ 67,244,296
Stock options exercised (in shares)	184,432					184,432
Stock options exercised	$ 3,689	634,581	0	0	0	$ 638,270
Stock issued for employee stock purchase plan (in shares)	7,186
Stock issued for employee stock purchase plan	$ 143	75,321	0	0	0	75,464
Stock option expense	0	1,337,734	0	0	0	1,337,734
Dividends paid to stockholders	0	0	(2,624,462)		0	(2,624,462)
Dividend received by non-controlling interest	0	0	0	0	(655,574)	(655,574)
Net income	0	0	2,912,276	0	1,325,455	4,237,731
Other comprehensive income (loss)	$ 0	0	0	421,729	23,609	445,338
BALANCE (in shares) at Aug. 31, 2023	9,424,102
BALANCE at Aug. 31, 2023	$ 188,482	21,986,767	51,004,427	(6,823,403)	4,342,524	$ 70,698,797
Stock options exercised (in shares)	36,094					36,094
Stock options exercised	$ 722	167,797	0	0	0	$ 168,519
Stock issued for employee stock purchase plan (in shares)	6,780
Stock issued for employee stock purchase plan	$ 136	79,831	0	0	0	79,967
Stock option expense	0	1,381,169	0	0	0	1,381,169
Dividends paid to stockholders	0	0	(2,642,298)		0	(2,642,298)
Dividend received by non-controlling interest	0	0	0	0	(1,255,076)	(1,255,076)
Net income	0	0	5,409,082	0	912,302	6,321,384
Other comprehensive income (loss)	$ 0	0	0	441,279	(18,420)	422,859
BALANCE (in shares) at Aug. 31, 2024	9,466,976
BALANCE at Aug. 31, 2024	$ 189,340	$ 23,615,564	$ 53,771,211	$ (6,382,124)	$ 3,981,330	$ 75,175,321

Note 14 - Income Taxes

12 Months Ended

Aug. 31, 2024

Notes to Financial Statements

Income Tax Disclosure [Text Block]

14.

INCOME TAXES

The provision for income taxes for the fiscal years ended August 31, 2024 and 2023 was approximately as follows:

	Fiscal Year Ended August 31,
	2024			2023
Current:
Federal	$	—		$	—
State		48,000			26,000
Foreign		1,601,000			1,857,000
		1,649,000			1,883,000
Deferred:
Federal		—			—
State		—			—
Foreign		(323,203	)		(533,400	)
		(323,203	)		(533,400	)
	$	1,325,797		$	1,349,600

Reconciliations of the expected federal income tax at the statutory rate of 21.0% with the provisions for income taxes for the fiscal years ended August 31, 2024 and 2023 were approximately as follows:

	Fiscal Year Ended August 31,
	2024			2023
Tax computed at statutory rates	$	1,627,000		$	1,352,000
State income tax, net of federal benefit		21,000			(20,000	)
Tax effect on equity in income of international joint ventures		(887,000	)		(1,354,000	)
Tax effect of foreign operations		371,000			1,005,000
Deemed repatriation		4,000			—
Foreign tax credit		(321,000	)		783,000
Research and development credit		(512,000	)		(710,000	)
Valuation allowance		1,066,000			354,000
Stock based compensation		175,000			31,000
Non-controlling interest		(71,000	)		(59,000	)
Prior year true-up		(146,000	)		(51,000	)
Other		(1,203	)		18,600
	$	1,325,797		$	1,349,600

The Company has not provided U.S. income taxes or foreign withholding taxes with respect to its portion of the cumulative undistributed earnings of certain foreign subsidiaries and joint ventures that are essentially permanent in duration. As a result of the 2017 tax law changes, U.S. federal income taxes on dividends received from the Company’s foreign subsidiaries and joint ventures after December 31, 2017 have been generally eliminated. However, the Company continues to be subject to foreign withholding taxes upon repatriation of any undistributed earnings that are not essentially permanent in duration. The Company recorded a tax benefit of approximately $180,000 in fiscal 2024 and tax expense of approximately $51,600 during fiscal 2023, representing changes in the deferred tax liability for foreign withholding taxes to be paid with respect to the portion of the cumulative undistributed earnings of foreign subsidiaries and joint ventures that the Company determined were not essentially permanent in duration.

The Company measures deferred tax assets and liabilities using enacted tax rates that will apply in the years in which the temporary differences are expected to be recovered or paid. The tax effect of the temporary differences and tax carryforwards comprising the net deferred taxes shown on the consolidated balance sheets as of August 31, 2024 and 2023 was approximately as follows:

	August 31,
	2024			2023
Stock-based compensation	$	637,100		$	556,700
Foreign tax credit carryforward		3,844,800			4,036,000
Capitalized research and experimentation		2,037,800			1,106,000
Other credit and loss carryforward		5,974,200			6,034,000
Other		965,368			1,048,800
Total deferred tax assets		13,459,268			12,781,500
Valuation allowance		(12,694,800	)		(11,933,700	)
Total deferred tax assets after valuation allowance		764,468			847,800
Right-of-use asset		(64,700	)		(66,200	)
Intangible assets		(1,564,200	)		(1,670,700	)
Unremitted foreign earnings		(34,800	)		(214,800	)
Other		(61,100	)		(201,215	)
Total deferred tax liabilities		(1,724,800	)		(2,152,915	)
Net deferred tax liabilities	$	(960,332	)	$	(1,305,115	)

As of August 31, 2024, the Company has foreign tax credit carryforwards of $3,844,800. This amount begins to expire to the extent not utilized by August 31, 2025. In addition, the Company had federal and state tax credit carryforwards of $5,405,560 as of August 31, 2024, which begin to expire in fiscal 2025. These federal and state tax credit carryforwards consist primarily of federal and Minnesota research and development credit carryforwards. The Company also has a deferred tax asset of $203,000 for federal net operating loss carryforwards and $274,000 for state net operating loss carryforwards as of August 31, 2024. The federal net operating loss carryforward has an indefinite carryforward period. The state net operating loss carryforward will begin to expire to the extent not utilized by August 31, 2025. The Company has a deferred tax asset of $481,200 for foreign net operating loss carryforwards, which will begin to expire to the extent not utilized by August 31, 2033.

The Company records a tax valuation allowance to reduce deferred tax assets to the amount expected to be realized when it is more likely than not that some portion or all of its deferred tax assets will not be realized.

The Company determined based on all available evidence, including historical data and projections of future results, that it is more likely than not that its domestic deferred tax assets will not be realized due to the absence of objectively verifiable sources of taxable income. On the basis of this evaluation, the Company has recorded a valuation allowance of $12,694,800 and $11,933,700 as of August 31, 2024 and 2023, respectively, to recognize only the portion of the deferred tax assets that is more likely than not to be realized. The net deferred tax asset as of August 31, 2024 and 2023 relates entirely to non-US deferred tax assets which are expected to be realized offset by deferred tax liability for withholding tax on cumulative undistributed earnings in foreign subsidiaries and joint ventures that the Company determined were not essentially permanent. The change in the valuation allowance totaled an increase of $761,100 and $340,800 for the years ended August 31, 2024 and 2023, respectively.

The following is a tabular reconciliation of the total amounts of approximated unrecognized tax benefits:

	Fiscal Year Ended August 31,
	2024			2023
Gross unrecognized tax benefits – beginning balance	$	361,200		$	319,000
Gross (decreases) increases – prior period tax positions		(5,400	)		100
Gross increases – current period tax positions		43,500			42,100
Gross unrecognized tax benefits – ending balance	$	399,300		$	361,200

The entire amount of unrecognized tax benefits would affect the effective tax rate if recognized. It is not expected that the amount of unrecognized tax benefits will change significantly in the next 12 months.

The Company recognizes interest related to unrecognized tax benefits and penalties as income tax expense. Accrued interest and penalties are included within the related tax liability line in the consolidated balance sheet. There was no liability for the payment of interest and penalties as of both August 31, 2024 and August 31, 2023.

The Company is subject to taxation in the United States and various states and foreign jurisdictions. With few exceptions, as of August 31, 2024, the Company is no longer subject to federal, state, local, or foreign examinations by tax authorities for years prior to August 31, 2021.

- Definition

The entire disclosure for income tax.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 740
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 12
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482685/740-10-50-12

Reference 2: http://www.xbrl.org/2003/role/exampleRef
-Topic 740
-SubTopic 10
-Name Accounting Standards Codification
-Section 55
-Paragraph 231
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482663/740-10-55-231

Reference 3: http://www.xbrl.org/2003/role/disclosureRef
-Topic 740
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 12C
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482685/740-10-50-12C

Reference 4: http://www.xbrl.org/2003/role/disclosureRef
-Topic 740
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 12B
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482685/740-10-50-12B

Reference 5: http://www.xbrl.org/2003/role/disclosureRef
-Topic 740
-SubTopic 270
-Name Accounting Standards Codification
-Section 50
-Paragraph 1
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147477891/740-270-50-1

Reference 6: http://www.xbrl.org/2003/role/disclosureRef
-Topic 740
-SubTopic 10
-Name Accounting Standards Codification
-Section S99
-Paragraph 1
-Subparagraph (SAB Topic 6.I.5.Q1)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147479360/740-10-S99-1

Reference 7: http://www.xbrl.org/2003/role/disclosureRef
-Topic 946
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 13
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480990/946-20-50-13

Reference 8: http://www.xbrl.org/2003/role/disclosureRef
-Topic 235
-SubTopic 10
-Name Accounting Standards Codification
-Section S99
-Paragraph 1
-Subparagraph (SX 210.4-08(h)(2))
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480678/235-10-S99-1

Reference 9: http://www.xbrl.org/2003/role/disclosureRef
-Topic 740
-Name Accounting Standards Codification
-Publisher FASB
-URI https://asc.fasb.org/740/tableOfContent

Reference 10: http://www.xbrl.org/2003/role/disclosureRef
-Topic 740
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 14
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482685/740-10-50-14

Reference 11: http://www.xbrl.org/2003/role/disclosureRef
-Topic 740
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 21
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482685/740-10-50-21

Reference 12: http://www.xbrl.org/2003/role/disclosureRef
-Topic 740
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 17
-Subparagraph (b)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482685/740-10-50-17

Reference 13: http://www.xbrl.org/2003/role/disclosureRef
-Topic 740
-SubTopic 10
-Name Accounting Standards Codification
-Section S99
-Paragraph 2
-Subparagraph (SAB Topic 11.C)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147479360/740-10-S99-2

Reference 14: http://www.xbrl.org/2003/role/disclosureRef
-Topic 740
-SubTopic 30
-Name Accounting Standards Codification
-Section 50
-Paragraph 2
-Subparagraph (a)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482603/740-30-50-2

+ Details

Note 10 - Stock-based Compensation (Details Textual) - USD ($)	12 Months Ended
	Aug. 31, 2024	Aug. 31, 2023	Aug. 31, 2022
Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Outstanding, Number	1,752,665	1,557,130	1,544,726
Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Grants in Period, Gross	269,844	277,613
Share-Based Payment Arrangement, Expense	$ 1,381,169	$ 1,337,734
Share-Based Payment Arrangement, Nonvested Award, Option, Cost Not yet Recognized, Amount	1,007,636
Allocated Share-based Compensation Expense, Estimate Next Twelve Months	672,134
Allocated Share-based Compensation Expense, Estimate, Fiscal Year Two	$ 335,502
Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Grants in Period, Weighted Average Grant Date Fair Value	$ 13.25	$ 11.41
Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Outstanding, Weighted Average Remaining Contractual Term (Year)	6 years 10 days	6 years 3 months
Share-Based Payment Arrangement, Option [Member]
Share-Based Compensation Arrangement by Share-Based Payment Award, Terms of Award	10
Share-Based Payment Arrangement, Option [Member] \| Minimum [Member]
Share-Based Compensation Arrangement by Share-Based Payment Award, Award Vesting Period	1 year
Share-Based Payment Arrangement, Option [Member] \| Maximum [Member]
Share-Based Compensation Arrangement by Share-Based Payment Award, Award Vesting Period	3 years
The 2024 Plan [Member]
Share-Based Compensation Arrangement by Share-Based Payment Award, Number of Shares Authorized	800,000
Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Outstanding, Number	0
Share-Based Compensation Arrangement by Share-Based Payment Award, Number of Shares Available for Grant	957,059
The 2019 Plan [member]
Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Outstanding, Number	1,387,415
The 2007 Plan [Member]
Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Outstanding, Number	365,251

Note 10 - Stock-based Compensation (Tables)

12 Months Ended

Aug. 31, 2024

Notes Tables

Schedule of Share-Based Payment Award, Stock Options, Valuation Assumptions [Table Text Block]

	Fiscal Year 2024			Fiscal Year 2023
Dividend yield		2.18	%		2.44	%
Expected volatility		46.1	%		45.2	%
Expected life of option (years)	5			10
Weighted average risk-free interest rate		4.23	%		3.31	%

Share-Based Payment Arrangement, Option, Activity [Table Text Block]

	Number of Shares (#)			Weighted Average Exercise Price		Aggregate Intrinsic Value
Outstanding at August 31, 2022		1,544,726		$	10.23
Options granted		277,613			11.41
Options exercised		(265,209	)		6.46
Options terminated		—			—

Outstanding at August 31, 2023		1,557,130		$	11.08
Options granted		269,844			13.25
Options exercised		(74,309	)		9.76
Options terminated		—			—

Outstanding at August 31, 2024		1,752,665		$	11.47	$	4,289,563

Exercisable at August 31, 2024		1,297,635		$	10.91	$	4,045,286

Note 14 - Income Taxes - Reconciliations of the Expected Federal Income Tax at the Statutory Rate with the Provisions for Income Taxes (Details) - USD ($)	12 Months Ended
	Aug. 31, 2024	Aug. 31, 2023
Tax computed at statutory rates	$ 1,627,000	$ 1,352,000
State income tax, net of federal benefit	21,000	(20,000)
Tax effect on equity in income of international joint ventures	(887,000)	(1,354,000)
Tax effect of foreign operations	371,000	1,005,000
Deemed repatriation	4,000	0
Foreign tax credit	(321,000)	(783,000)
Foreign tax credit	321,000	783,000
Research and development credit	(512,000)	(710,000)
Valuation allowance	1,066,000	354,000
Stock based compensation	175,000	31,000
Non-controlling interest	(71,000)	(59,000)
Prior year true-up	(146,000)	(51,000)
Other	(1,203)	18,600
Income Tax Expense (Benefit)	$ 1,325,797	$ 1,349,600

Note 12 - Retirement Plan (Details Textual) - USD ($)	Aug. 31, 2024	Aug. 31, 2023
Defined Contribution Plan, Maximum Annual Contributions Per Employee, Percent	15.00%
Defined Contribution Plan Maximum Amount of Employees Contributions Percent	50.00%
Defined Contribution Plan, Employer Matching Contribution, Percent of Employees' Gross Pay	3.50%
Defined Contribution Plan, Cost	$ 332,726	$ 289,235

Note 11 - Segment and Geographic Information

12 Months Ended

Aug. 31, 2024

Notes to Financial Statements

Segment Reporting Disclosure [Text Block]

11.

SEGMENT AND GEOGRAPHIC INFORMATION

Segment Information

The Company’s chief operating decision maker is its Chief Executive Officer. The Company’s business is organized into two reportable segments: ZERUST® and Natur-Tec®. The Company has been selling its proprietary ZERUST® rust and corrosion inhibiting products and services to the automotive, electronics, electrical, mechanical, military, and retail consumer markets for over 50 years and, more recently, has also expanded into the oil and gas industry. The Company also sells a portfolio of proprietary bio-based and compostable (fully biodegradable) polymer resins and finished products under the Natur-Tec® brand.

The following tables present the Company’s business segment information:

	Fiscal 2024		Fiscal 2023
ZERUST® net sales	$	63,092,575	$	61,728,364
Natur-Tec® net sales		21,966,942		18,174,588
Total net sales	$	85,059,517	$	79,902,952

The following table sets forth the Company’s cost of goods sold by segment:

	Fiscal 2024		Fiscal 2023
Direct cost of goods sold
ZERUST®	$	33,623,834	$	35,297,352
Natur-Tec®		14,148,145		13,645,992
Indirect cost of goods sold		3,501,176		3,155,777
Total net cost of goods sold	$	51,273,155	$	52,099,121

The Company utilizes product net sales and direct and indirect cost of goods sold for each product in reviewing the financial performance of a product type. Further allocation of Company expenses or assets, aside from amounts presented in the tables above, is not utilized in evaluating product performance, nor does such allocation occur for internal financial reporting.

Sales to the Company’s joint ventures are included in the foregoing geographic and segment information, however, sales by the Company’s joint ventures to other parties are not included. The foregoing geographic and segment information represents only sales and cost of goods sold recognized directly by the Company.

All joint venture operations, including equity in income, fees for services, and related dividends, are related to ZERUST®products and services.

Geographic Information

Net sales by geographic location for fiscal 2024 and fiscal 2023 were as follows:

	Fiscal Year Ended August 31,
	2024		2023
Inside the U.S. to unaffiliated customers	$	30,492,665	$	28,554,354
Outside the U.S. to:
Joint ventures in which the Company is a shareholder directly and indirectly		2,228,894		3,401,910
Unaffiliated customers		52,337,958		47,946,688
	$	85,059,517	$	79,902,952

Net sales by geographic location are based on the location of the customer.

Fees for services provided to joint ventures by geographic location as a percentage of total fees for services provided to joint ventures during fiscal 2024 and fiscal 2023, respectively, were as follows:

	Fiscal 2024		% of Total Fees for Services Provided to Joint Ventures			Fiscal 2023		% of Total Fees for Services Provided to Joint Ventures
Poland	$	849,736		16.2	%	$	810,977		15.6	%
Germany		828,932		15.8	%		816,089		15.7	%
Japan		582,674		11.1	%		658,934		12.7	%
France		485,627		9.3	%		479,515		9.2	%
Sweden		445,560		8.5	%		498,463		9.6	%
Finland		395,515		7.5	%		388,627		7.5	%
United Kingdom		375,150		7.1	%		283,418		5.5	%
Czech Republic		338,195		6.4	%		365,018		7.0	%
Thailand		332,148		6.3	%		340,657		6.6	%
South Korea		258,314		4.9	%		266,562		5.1	%
Indonesia		166,053		3.2	%		130,081		2.5	%
Other		193,878		3.7	%		150,844		3.0	%
	$	5,251,782		100.0	%	$	5,189,185		100.0	%

Sales to the Company’s joint ventures are included in the foregoing segment and geographic information; however, sales by the Company’s joint ventures to other parties are not included. The foregoing segment and geographic information represents only sales recognized directly by the Company and sold in that geographic territory.

See Note 6 for additional details on geographical information regarding equity in income from joint ventures.

The geographical distribution of total property and equipment and net sales, which are based on the geographical location of the customer, is as follows:

	At August 31, 2024		At August 31, 2023
China	$	5,627,202	$	5,729,080
Other		1,217,400		745,469
United States		9,421,051		7,590,805
Total property and equipment	$	16,265,653	$	14,065,354

	Fiscal Year Ended August 31, 2024		Fiscal Year Ended August 31, 2023
China	$	14,245,238	$	13,469,075
Brazil		5,994,372		5,969,314
India		22,189,317		19,916,834
Other		12,137,925		11,993,375
United States		30,492,665		28,554,354
Total net sales	$	85,059,517	$	79,902,952

Long-lived assets consist of property and equipment. These assets are periodically reviewed to assure the net realizable value from the estimated future production based on forecasted sales exceeds the carrying value of the assets.

All joint venture operations, including equity in income, fees for services and related dividends, are primarily related to ZERUST®products and services.

- Definition

The entire disclosure for reporting segments including data and tables. Reportable segments include those that meet any of the following quantitative thresholds a) it's reported revenue, including sales to external customers and intersegment sales or transfers is 10 percent or more of the combined revenue, internal and external, of all operating segments b) the absolute amount of its reported profit or loss is 10 percent or more of the greater, in absolute amount of 1) the combined reported profit of all operating segments that did not report a loss or 2) the combined reported loss of all operating segments that did report a loss c) its assets are 10 percent or more of the combined assets of all operating segments.

+ References

Reference 1: http://www.xbrl.org/2003/role/exampleRef
-Topic 280
-SubTopic 10
-Name Accounting Standards Codification
-Section 55
-Paragraph 48
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482785/280-10-55-48

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Topic 280
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 32
-Subparagraph (f)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482810/280-10-50-32

Reference 3: http://www.xbrl.org/2003/role/disclosureRef
-Topic 270
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 1
-Subparagraph (i)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482964/270-10-50-1

Reference 4: http://www.xbrl.org/2003/role/disclosureRef
-Topic 280
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 32
-Subparagraph (ee)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482810/280-10-50-32

Reference 5: http://fasb.org/us-gaap/role/ref/otherTransitionRef
-Topic 280
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 32
-Subparagraph (d)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482810/280-10-50-32

Reference 6: http://www.xbrl.org/2003/role/exampleRef
-Topic 280
-SubTopic 10
-Name Accounting Standards Codification
-Section 55
-Paragraph 54
-Subparagraph (d)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482785/280-10-55-54

Reference 7: http://www.xbrl.org/2003/role/exampleRef
-Topic 280
-SubTopic 10
-Name Accounting Standards Codification
-Section 55
-Paragraph 47
-Subparagraph (c)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482785/280-10-55-47

Reference 8: http://www.xbrl.org/2003/role/exampleRef
-Topic 280
-SubTopic 10
-Name Accounting Standards Codification
-Section 55
-Paragraph 54
-Subparagraph (a)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482785/280-10-55-54

Reference 9: http://www.xbrl.org/2003/role/exampleRef
-Topic 280
-SubTopic 10
-Name Accounting Standards Codification
-Section 55
-Paragraph 47
-Subparagraph (a)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482785/280-10-55-47

Reference 10: http://www.xbrl.org/2003/role/exampleRef
-Topic 280
-SubTopic 10
-Name Accounting Standards Codification
-Section 55
-Paragraph 54
-Subparagraph (e)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482785/280-10-55-54

Reference 11: http://www.xbrl.org/2003/role/exampleRef
-Topic 280
-SubTopic 10
-Name Accounting Standards Codification
-Section 55
-Paragraph 47
-Subparagraph (d)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482785/280-10-55-47

Reference 12: http://www.xbrl.org/2003/role/disclosureRef
-Topic 280
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 22
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482810/280-10-50-22

Reference 13: http://www.xbrl.org/2003/role/disclosureRef
-Topic 280
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 31
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482810/280-10-50-31

Reference 14: http://www.xbrl.org/2003/role/disclosureRef
-Topic 280
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 34
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482810/280-10-50-34

Reference 15: http://www.xbrl.org/2003/role/disclosureRef
-Topic 280
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 26C
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482810/280-10-50-26C

Reference 16: http://www.xbrl.org/2003/role/disclosureRef
-Topic 280
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 26B
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482810/280-10-50-26B

Reference 17: http://www.xbrl.org/2003/role/disclosureRef
-Topic 280
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 15
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482810/280-10-50-15

Reference 18: http://www.xbrl.org/2003/role/disclosureRef
-Topic 280
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 42
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482810/280-10-50-42

Reference 19: http://www.xbrl.org/2003/role/disclosureRef
-Topic 280
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 40
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482810/280-10-50-40

Reference 20: http://www.xbrl.org/2003/role/disclosureRef
-Topic 280
-Name Accounting Standards Codification
-Publisher FASB
-URI https://asc.fasb.org/280/tableOfContent

Reference 21: http://www.xbrl.org/2003/role/disclosureRef
-Topic 280
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 26
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482810/280-10-50-26

Reference 22: http://www.xbrl.org/2003/role/disclosureRef
-Topic 280
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 41
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482810/280-10-50-41

Reference 23: http://www.xbrl.org/2003/role/disclosureRef
-Topic 280
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 21
-Subparagraph (a)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482810/280-10-50-21

Reference 24: http://www.xbrl.org/2003/role/disclosureRef
-Topic 280
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 21
-Subparagraph (b)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482810/280-10-50-21

Reference 25: http://www.xbrl.org/2003/role/disclosureRef
-Topic 280
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 32
-Subparagraph (e)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482810/280-10-50-32

+ Details

Note 3 - Inventories - Inventories (Details) - USD ($)	Aug. 31, 2024	Aug. 31, 2023
Production materials	$ 5,513,409	$ 4,960,355
Finished goods	8,877,435	8,136,134
Inventory, Net	$ 14,390,844	$ 13,096,489

Note 13 - Related Party Transactions (Details Textual) - USD ($)	12 Months Ended
	Aug. 31, 2024	Aug. 31, 2023
Bioplastic Polymers LLC [Member] \| Consulting Payment Expense [Member]
Related Party Transaction, Amounts of Transaction	$ 144,000	$ 144,000

Note 7 - Corporate Debt

12 Months Ended

Aug. 31, 2024

Notes to Financial Statements

Debt Disclosure [Text Block]

7.	CORPORATE DEBT

On January 6, 2023, the Company entered into a Credit Agreement (the “Credit Agreement”) with JPMorgan Chase Bank, N.A. (“JPM”), which provides the Company with a senior secured revolving line of credit (the “Credit Facility”) of up to $10.0 million, which includes a $5.0 million sublimit for standby letters of credit. Borrowings of $4,291,608 under the new Credit Agreement were outstanding August 31, 2024. Borrowings of $3,600,000 were outstanding as of August 31, 2023 under the previous credit agreement.

Unless terminated earlier, the principal amount under the Credit Facility, together with all accrued unpaid interest and other amounts owing thereunder, if any, will be payable in full on the maturity date. On January 5, 2024, the Company and JPM renewed its Credit Agreement to extend the maturity date of the Credit Facility from January 6, 2024 to January 6, 2025. All other terms of the Credit Facility and the Credit Agreement remain the same.

Borrowings under the Credit Agreement bear interest at a floating rate, at the option of the Company, equal to either the CB Floating Rate or the Adjusted SOFR Rate. The term “CB Floating Rate” means the greater of the Prime Rate in the United States or 2.50%. The term “Adjusted SOFR Rate” means the term secured overnight financing rate for either one, three or six months (depending on the interest period selected by the Company) plus 0.10% per annum. With respect to any borrowings using an Adjusted SOFR Rate, there is an applicable margin of 2.15% applied per annum. There is no applicable margin with respect to borrowings using a CB Floating Rate. The weighted average interest rate was 7.44 and 6.27 for fiscal 2024 and 2023, respectively.

To secure the Credit Agreement, the Company assigned JPM a continuing security interest in all of its right, title and interested in collateral made up for the assets of the Company.

The Credit Agreement contains customary affirmative and negative covenants, including, among other matters, limitations on the Company’s ability to incur additional debt, grant liens, engage in certain business operations and transactions, make certain investments, modify its organizational documents or form any new subsidiaries, subject to certain exceptions. Further, the Credit Agreement contains a negative covenant that restricts the ability of the Company to redeem or repurchase its common stock or pay dividends if the result of which would cause an event of default under the Credit Agreement. The Credit Agreement also requires the Company to maintain a Fixed Charge Coverage Ratio of at least 1.25 to 1.00. The term “Fixed Charge Coverage Ratio” means the ratio, computed for the Company on a consolidated basis, of net income plus income tax expense, plus amortization expense, plus depreciation expense, plus interest expense, and plus dividends received from joint ventures, minus unfinanced capital expenditures and equity in income from joint ventures, all computed for the twelve month period then ending, to scheduled principal payments made, plus scheduled finance lease payments made, plus interest expense paid, plus income tax expense paid, and plus cash distributions and dividends paid, all computed for the same twelve month period then ending. The Company was in compliance with all covenants as of August 31, 2024 and 2023.

The Credit Agreement also contains customary events of default, including, without limitation, payment defaults, material inaccuracy of representations and warranties, covenant defaults, bankruptcy and insolvency proceedings, cross-defaults to certain other agreements, breach of any financial covenant and change of control. Upon the occurrence and during the continuance of any event of default, JPM may accelerate the payment of the obligations thereunder and exercise various other customary default remedies.

In accordance with ASC Topic No. 470, “Debt – Modifications and Extinguishments” (Topic 470), the transactions noted above were determined to be a modification of the existing debt.

On each of April 10, 2023 and May 30, 2023, the Company’s wholly-owned subsidiary in China, NTIC China, entered into a loan agreement with China Construction Bank Corporation. Each term loan provided NTIC China with a RMB 10,000,000 (USD $1.45 million). The term loans mature in April 2025 and June 2025, respectively, unless extended. Both term loans have an annual interest rate of 3.25% with interest due monthly. Both term loans are secured by an office building owned by NTIC China and the loan agreements contain certain financial and other covenants. The Company was in compliance with the covenants as of August 31, 2024. The current outstanding balance as of August 31, 2024 for both term loans was a total of USD $2,820,835.

- Definition

The entire disclosure for information about short-term and long-term debt arrangements, which includes amounts of borrowings under each line of credit, note payable, commercial paper issue, bonds indenture, debenture issue, own-share lending arrangements and any other contractual agreement to repay funds, and about the underlying arrangements, rationale for a classification as long-term, including repayment terms, interest rates, collateral provided, restrictions on use of assets and activities, whether or not in compliance with debt covenants, and other matters important to users of the financial statements, such as the effects of refinancing and noncompliance with debt covenants.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 470
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 6
-Subparagraph (b)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147481544/470-10-50-6

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Topic 470
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 6
-Subparagraph (a)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147481544/470-10-50-6

Reference 3: http://www.xbrl.org/2003/role/disclosureRef
-Topic 405
-SubTopic 40
-Name Accounting Standards Codification
-Section 50
-Paragraph 1
-Subparagraph (d)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147477092/405-40-50-1

Reference 4: http://www.xbrl.org/2003/role/disclosureRef
-Topic 405
-SubTopic 40
-Name Accounting Standards Codification
-Section 50
-Paragraph 1
-Subparagraph (a)(3)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147477092/405-40-50-1

Reference 5: http://www.xbrl.org/2003/role/disclosureRef
-Topic 405
-SubTopic 40
-Name Accounting Standards Codification
-Section 50
-Paragraph 1
-Subparagraph (a)(2)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147477092/405-40-50-1

Reference 6: http://www.xbrl.org/2003/role/disclosureRef
-Topic 405
-SubTopic 40
-Name Accounting Standards Codification
-Section 50
-Paragraph 1
-Subparagraph (a)(1)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147477092/405-40-50-1

Reference 7: http://www.xbrl.org/2003/role/disclosureRef
-Topic 405
-SubTopic 40
-Name Accounting Standards Codification
-Section 50
-Paragraph 1
-Subparagraph (a)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147477092/405-40-50-1

Reference 8: http://www.xbrl.org/2003/role/disclosureRef
-Topic 470
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 1B
-Subparagraph (h)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147481139/470-20-50-1B

Reference 9: http://www.xbrl.org/2003/role/disclosureRef
-Topic 235
-SubTopic 10
-Name Accounting Standards Codification
-Section S99
-Paragraph 1
-Subparagraph (SX 210.4-08(c))
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480678/235-10-S99-1

Reference 10: http://fasb.org/us-gaap/role/ref/legacyRef
-Topic 470
-Name Accounting Standards Codification
-Publisher FASB
-URI https://asc.fasb.org/470/tableOfContent

Reference 11: http://www.xbrl.org/2003/role/disclosureRef
-Topic 835
-SubTopic 30
-Name Accounting Standards Codification
-Section 45
-Paragraph 2
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482925/835-30-45-2

Reference 12: http://www.xbrl.org/2003/role/disclosureRef
-Topic 470
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 1B
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147481139/470-20-50-1B

Reference 13: http://www.xbrl.org/2003/role/disclosureRef
-Topic 470
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 1B
-Subparagraph (g)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147481139/470-20-50-1B

Reference 14: http://www.xbrl.org/2003/role/disclosureRef
-Topic 470
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 1B
-Subparagraph (i)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147481139/470-20-50-1B

Reference 15: http://www.xbrl.org/2003/role/disclosureRef
-Topic 470
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 1C
-Subparagraph (a)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147481139/470-20-50-1C

Reference 16: http://www.xbrl.org/2003/role/disclosureRef
-Topic 470
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 1C
-Subparagraph (b)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147481139/470-20-50-1C

Reference 17: http://www.xbrl.org/2003/role/disclosureRef
-Topic 470
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 1C
-Subparagraph (c)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147481139/470-20-50-1C

Reference 18: http://www.xbrl.org/2003/role/disclosureRef
-Topic 470
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 1E
-Subparagraph (b)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147481139/470-20-50-1E

Reference 19: http://www.xbrl.org/2003/role/disclosureRef
-Topic 470
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 1I
-Subparagraph (a)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147481139/470-20-50-1I

Reference 20: http://www.xbrl.org/2003/role/disclosureRef
-Topic 470
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 1I
-Subparagraph (b)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147481139/470-20-50-1I

Reference 21: http://www.xbrl.org/2003/role/disclosureRef
-Topic 470
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 1I
-Subparagraph (d)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147481139/470-20-50-1I

+ Details

Note 9 - Net Income Per Common Share (Details Textual) - shares	12 Months Ended
	Aug. 31, 2024	Aug. 31, 2023
Share-Based Payment Arrangement, Option [Member]
Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount	305,514	322,246

Note 5 - Intangible Assets, Net (Tables)

12 Months Ended

Aug. 31, 2024

Notes Tables

Schedule of Finite-Lived Intangible Assets [Table Text Block]

	As of August 31, 2024
	Gross Carrying Amount		Accumulated Amortization			Net Carrying Amount
Patents and trademarks	$	3,459,877	$	(2,854,532	)	$	605,345
Customer relationships		6,347,000		(1,269,400	)		5,077,600
Total intangible assets, net	$	9,806,877	$	(4,123,932	)	$	5,682,945

	As of August 31, 2023
	Gross Carrying Amount		Accumulated Amortization			Net Carrying Amount
Patents and trademarks	$	3,339,717	$	(2,680,965	)	$	658,752
Customer relationships		6,347,000		(846,267	)		5,500,733
Total intangible assets, net	$	9,686,717	$	(3,527,232	)	$	6,159,485

Schedule of Finite-Lived Intangible Assets, Future Amortization Expense [Table Text Block]

Fiscal 2025	$	606,911
Fiscal 2026		485,814
Fiscal 2027		450,739
Fiscal 2028		450,739
Fiscal 2029		450,739
Thereafter		3,238,003
Total	$	5,682,945

Note 1 - Nature of Business and Significant Accounting Policies (Tables)

12 Months Ended

Aug. 31, 2024

Notes Tables

Property and Equipment Useful Life [Table Text Block]

Buildings and improvements	5-30 years
Machinery and equipment	3-10 years

Note 2 - Accounting Pronouncements

12 Months Ended

Aug. 31, 2024

Notes to Financial Statements

Accounting Standards Update and Change in Accounting Principle [Text Block]

2.	ACCOUNTING PRONOUNCEMENTS

In June 2016, the Financial Accounting Standards Board (FASB) issued Accounting Standards Update (ASU) No. 2016-13, Measurement of Credit Losses on Financial Instruments, which revises guidance for the accounting for credit losses on financial instruments within its scope, and in November 2018, issued ASU No. 2018-19 and in April 2019, issued ASU No. 2019-04 and in May 2019, issued ASU No. 2019-05, and in November 2019, issued ASU No. 2019-11, which amended the standard. The new standard introduces an approach, based on expected losses, to estimate credit losses on certain types of financial instruments and modifies the impairment model for available-for-sale debt securities. The new approach to estimating credit losses (referred to as the current expected credit losses model) applies to most financial assets measured at amortized cost and certain other instruments, including trade and other receivables, loans, held-to-maturity debt securities, net investments in leases and off-balance-sheet credit exposures. This ASU is effective for fiscal years beginning after December 15, 2022, including interim periods within those fiscal years. Entities are required to apply the standard’s provisions as a cumulative-effect adjustment to retained earnings as of the beginning of the first reporting period in which the guidance is adopted. The Company adopted this pronouncement on September 1, 2023, which did not have a material impact on the Company’s consolidated financial position or operating results.

In November 2023, the FASB issued ASU No. 2023-07, Segment Reporting (Topic 280): Improvements to Reportable Segment Disclosures. ASU 2023-07 is intended to enhance financial reporting by requiring incremental disclosures for significant segment expenses on an annual and interim basis by public entities required to report segment information in accordance with Accounting Standards Codification Topic 280. The amendments in ASU 2023-07 are to be applied retrospectively to all periods presented in the financial statements and early adoption is permitted. This standard will be applicable to the Company for the 2025 annual period and quarterly periods thereafter. The Company is evaluating its disclosure approach for ASU 2023-07 and anticipates adopting the standard for the year ended August 31, 2025 and filings thereafter.

In December 2023, the FASB issued ASU No. 2023-09, Income Taxes (Topic 740): Improvements to Income Tax Disclosures. The new guidance is expected to improve income tax disclosures primarily related to the rate reconciliation and income taxes paid information by requiring 1) consistent categories and greater disaggregation of information in the rate reconciliation and 2) income taxes paid disaggregated by jurisdiction. The guidance is effective on a prospective basis, although retrospective application and early adoption is permitted. The Company is evaluating its disclosure approach for ASU 2023-09 and anticipates adopting the standard for the annual period starting September 1, 2025.

In March 2024, the SEC adopted rules under SEC Release No. 33-11275, The Enhancement and Standardization of Climate-Related Disclosures for Investors, which requires the disclosure of material Scope 1 and Scope 2 greenhouse gas emissions and other climate-related topics in annual reports and registration statements. For large-accelerated filers and accelerated filers, disclosure requirements will begin phasing in for fiscal years beginning on or after January 1, 2025, and January 1, 2026, respectively, subject to legal challenges and the SEC’s voluntary stay of the disclosure requirements. The Company is currently evaluating the impact these rules will have on its consolidated financial statements and related disclosures.

- Definition

The entire disclosure for change in accounting principle. Includes, but is not limited to, nature, reason, and method of adopting amendment to accounting standards or other change in accounting principle.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 280
-SubTopic 10
-Name Accounting Standards Codification
-Section 65
-Paragraph 1
-Subparagraph (b)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147476173/280-10-65-1

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Topic 250
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 1
-Subparagraph (b)(4)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147483443/250-10-50-1

Reference 3: http://www.xbrl.org/2003/role/disclosureRef
-Topic 105
-SubTopic 10
-Name Accounting Standards Codification
-Section 65
-Paragraph 7
-Subparagraph (a)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147479343/105-10-65-7

Reference 4: http://www.xbrl.org/2003/role/disclosureRef
-Topic 805
-SubTopic 60
-Name Accounting Standards Codification
-Section 65
-Paragraph 1
-Subparagraph (g)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147476176/805-60-65-1

Reference 5: http://www.xbrl.org/2003/role/disclosureRef
-Topic 848
-SubTopic 10
-Name Accounting Standards Codification
-Section 65
-Paragraph 2
-Subparagraph (c)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147483550/848-10-65-2

Reference 6: http://www.xbrl.org/2003/role/disclosureRef
-Topic 740
-SubTopic 323
-Name Accounting Standards Codification
-Section 65
-Paragraph 2
-Subparagraph (g)(2)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147478666/740-323-65-2

Reference 7: http://www.xbrl.org/2003/role/disclosureRef
-Topic 740
-SubTopic 323
-Name Accounting Standards Codification
-Section 65
-Paragraph 2
-Subparagraph (g)(4)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147478666/740-323-65-2

Reference 8: http://www.xbrl.org/2003/role/disclosureRef
-Topic 740
-SubTopic 323
-Name Accounting Standards Codification
-Section 65
-Paragraph 2
-Subparagraph (g)(1)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147478666/740-323-65-2

Reference 9: http://www.xbrl.org/2003/role/disclosureRef
-Topic 848
-SubTopic 10
-Name Accounting Standards Codification
-Section 65
-Paragraph 2
-Subparagraph (d)(1)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147483550/848-10-65-2

Reference 10: http://www.xbrl.org/2003/role/disclosureRef
-Topic 848
-SubTopic 10
-Name Accounting Standards Codification
-Section 65
-Paragraph 1
-Subparagraph (e)(1)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147483550/848-10-65-1

Reference 11: http://www.xbrl.org/2003/role/disclosureRef
-Topic 944
-SubTopic 40
-Name Accounting Standards Codification
-Section 65
-Paragraph 2
-Subparagraph (g)(2)(i)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480016/944-40-65-2

Reference 12: http://www.xbrl.org/2003/role/disclosureRef
-Topic 944
-SubTopic 40
-Name Accounting Standards Codification
-Section 65
-Paragraph 2
-Subparagraph (g)(2)(ii)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480016/944-40-65-2

Reference 13: http://www.xbrl.org/2003/role/disclosureRef
-Topic 944
-SubTopic 40
-Name Accounting Standards Codification
-Section 65
-Paragraph 2
-Subparagraph (g)(2)(iii)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480016/944-40-65-2

Reference 14: http://www.xbrl.org/2003/role/disclosureRef
-Topic 944
-SubTopic 40
-Name Accounting Standards Codification
-Section 65
-Paragraph 2
-Subparagraph (g)(2)(iv)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480016/944-40-65-2

Reference 15: http://www.xbrl.org/2003/role/disclosureRef
-Topic 944
-SubTopic 40
-Name Accounting Standards Codification
-Section 65
-Paragraph 2
-Subparagraph (h)(2)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480016/944-40-65-2

Reference 16: http://www.xbrl.org/2003/role/disclosureRef
-Topic 250
-SubTopic 10
-Name Accounting Standards Codification
-Section S99
-Paragraph 5
-Subparagraph (SAB Topic 11.M.Q2)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480530/250-10-S99-5

Reference 17: http://www.xbrl.org/2003/role/disclosureRef
-Topic 815
-SubTopic 20
-Name Accounting Standards Codification
-Section 65
-Paragraph 6
-Subparagraph (i)(1)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480528/815-20-65-6

Reference 18: http://www.xbrl.org/2003/role/disclosureRef
-Topic 250
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 1
-Subparagraph (a)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147483443/250-10-50-1

Reference 19: http://www.xbrl.org/2003/role/disclosureRef
-Topic 326
-SubTopic 10
-Name Accounting Standards Codification
-Section 65
-Paragraph 4
-Subparagraph (e)(1)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147479654/326-10-65-4

Reference 20: http://www.xbrl.org/2003/role/disclosureRef
-Topic 326
-SubTopic 10
-Name Accounting Standards Codification
-Section 65
-Paragraph 4
-Subparagraph (e)(2)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147479654/326-10-65-4

Reference 21: http://www.xbrl.org/2003/role/disclosureRef
-Topic 926
-SubTopic 20
-Name Accounting Standards Codification
-Section 65
-Paragraph 2
-Subparagraph (f)(1)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147483194/926-20-65-2

Reference 22: http://www.xbrl.org/2003/role/disclosureRef
-Topic 926
-SubTopic 20
-Name Accounting Standards Codification
-Section 65
-Paragraph 2
-Subparagraph (f)(2)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147483194/926-20-65-2

Reference 23: http://www.xbrl.org/2003/role/disclosureRef
-Topic 926
-SubTopic 20
-Name Accounting Standards Codification
-Section 65
-Paragraph 2
-Subparagraph (f)(3)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147483194/926-20-65-2

Reference 24: http://www.xbrl.org/2003/role/disclosureRef
-Topic 250
-SubTopic 10
-Name Accounting Standards Codification
-Section S99
-Paragraph 6
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480530/250-10-S99-6

Reference 25: http://www.xbrl.org/2003/role/disclosureRef
-Topic 250
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 1
-Subparagraph (c)(1)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147483443/250-10-50-1

Reference 26: http://www.xbrl.org/2003/role/disclosureRef
-Topic 250
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 1
-Subparagraph (b)(1)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147483443/250-10-50-1

Reference 27: http://www.xbrl.org/2003/role/disclosureRef
-Name Accounting Standards Codification
-Topic 250
-Publisher FASB
-URI https://asc.fasb.org/250/tableOfContent

Reference 28: http://www.xbrl.org/2003/role/disclosureRef
-Topic 815
-SubTopic 40
-Name Accounting Standards Codification
-Section 65
-Paragraph 1
-Subparagraph (e)(1)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480175/815-40-65-1

+ Details

Note 5 - Intangible Assets, Net (Details Textual) - USD ($)	12 Months Ended
	Aug. 31, 2024	Aug. 31, 2023
Amortization of Intangible Assets	$ 596,700	$ 588,454

Note 11 - Segment and Geographic Information - Information by Geographic Location (Details) - USD ($)	12 Months Ended
	Aug. 31, 2024	Aug. 31, 2023
Total Fees	$ 5,251,782	$ 5,189,185
Total Fees percentage	100.00%	100.00%
POLAND
Total Fees	$ 849,736	$ 810,977
Total Fees percentage	16.20%	15.60%
GERMANY
Total Fees	$ 828,932	$ 816,089
Total Fees percentage	15.80%	15.70%
JAPAN
Total Fees	$ 582,674	$ 658,934
Total Fees percentage	11.10%	12.70%
FRANCE
Total Fees	$ 485,627	$ 479,515
Total Fees percentage	9.30%	9.20%
SWEDEN
Total Fees	$ 445,560	$ 498,463
Total Fees percentage	8.50%	9.60%
FINLAND
Total Fees	$ 395,515	$ 388,627
Total Fees percentage	7.50%	7.50%
UNITED KINGDOM
Total Fees	$ 375,150	$ 283,418
Total Fees percentage	7.10%	5.50%
CZECHIA
Total Fees	$ 338,195	$ 365,018
Total Fees percentage	6.40%	7.00%
THAILAND
Total Fees	$ 332,148	$ 340,657
Total Fees percentage	6.30%	6.60%
KOREA, REPUBLIC OF
Total Fees	$ 258,314	$ 266,562
Total Fees percentage	4.90%	5.10%
INDONESIA
Total Fees	$ 166,053	$ 130,081
Total Fees percentage	3.20%	2.50%
Other Countries [Member]
Total Fees	$ 193,878	$ 150,844
Total Fees percentage	3.70%	3.00%

Note 11 - Segment and Geographic Information (Tables)

12 Months Ended

Aug. 31, 2024

Notes Tables

Reconciliation of Revenue from Segments to Consolidated [Table Text Block]

	Fiscal 2024		Fiscal 2023
ZERUST® net sales	$	63,092,575	$	61,728,364
Natur-Tec® net sales		21,966,942		18,174,588
Total net sales	$	85,059,517	$	79,902,952

Reconciliation of Cost of Goods Sold from Segments to Consolidated [Table Text Block]

	Fiscal 2024		Fiscal 2023
Direct cost of goods sold
ZERUST®	$	33,623,834	$	35,297,352
Natur-Tec®		14,148,145		13,645,992
Indirect cost of goods sold		3,501,176		3,155,777
Total net cost of goods sold	$	51,273,155	$	52,099,121

Schedule of Revenue from External Customers Attributed to Foreign Countries by Geographic Area [Table Text Block]

	Fiscal Year Ended August 31,
	2024		2023
Inside the U.S. to unaffiliated customers	$	30,492,665	$	28,554,354
Outside the U.S. to:
Joint ventures in which the Company is a shareholder directly and indirectly		2,228,894		3,401,910
Unaffiliated customers		52,337,958		47,946,688
	$	85,059,517	$	79,902,952

Schedule of Revenue from External Customers and Long-Lived Assets, by Geographical Areas [Table Text Block]

	At August 31, 2024		At August 31, 2023
China	$	5,627,202	$	5,729,080
Other		1,217,400		745,469
United States		9,421,051		7,590,805
Total property and equipment	$	16,265,653	$	14,065,354

Revenue from External Customers by Geographic Areas [Table Text Block]

	Fiscal Year Ended August 31, 2024		Fiscal Year Ended August 31, 2023
China	$	14,245,238	$	13,469,075
Brazil		5,994,372		5,969,314
India		22,189,317		19,916,834
Other		12,137,925		11,993,375
United States		30,492,665		28,554,354
Total net sales	$	85,059,517	$	79,902,952

Fees for Services Provided to Joint Ventures [Member]

Notes Tables

Schedule of Revenue from External Customers Attributed to Foreign Countries by Geographic Area [Table Text Block]

	Fiscal 2024		% of Total Fees for Services Provided to Joint Ventures			Fiscal 2023		% of Total Fees for Services Provided to Joint Ventures
Poland	$	849,736		16.2	%	$	810,977		15.6	%
Germany		828,932		15.8	%		816,089		15.7	%
Japan		582,674		11.1	%		658,934		12.7	%
France		485,627		9.3	%		479,515		9.2	%
Sweden		445,560		8.5	%		498,463		9.6	%
Finland		395,515		7.5	%		388,627		7.5	%
United Kingdom		375,150		7.1	%		283,418		5.5	%
Czech Republic		338,195		6.4	%		365,018		7.0	%
Thailand		332,148		6.3	%		340,657		6.6	%
South Korea		258,314		4.9	%		266,562		5.1	%
Indonesia		166,053		3.2	%		130,081		2.5	%
Other		193,878		3.7	%		150,844		3.0	%
	$	5,251,782		100.0	%	$	5,189,185		100.0	%

Note 4 - Property and Equipment, Net (Details Textual)		12 Months Ended
Note 4 - Property and Equipment, Net (Details Textual)	Feb. 28, 2023 USD ($) ft²	Aug. 31, 2024 USD ($)	Aug. 31, 2023 USD ($)
Payments to Acquire Property, Plant, and Equipment		$ 3,298,067	$ 3,247,652
Depreciation expense		$ 1,156,364	$ 1,042,505
Property Immediately Adjacent to NTIC’s Headquarters in Circle Pines, Minnesota [Member]
Area of Real Estate Property \| ft²	26,000
Payments to Acquire Property, Plant, and Equipment	$ 1,200,000

Note 3 - Inventories (Tables)

12 Months Ended

Aug. 31, 2024

Notes Tables

Schedule of Inventory, Current [Table Text Block]

	August 31, 2024		August 31, 2023
Production materials	$	5,513,409	$	4,960,355
Finished goods		8,877,435		8,136,134
	$	14,390,844	$	13,096,489

Note 5 - Intangible Assets, Net

12 Months Ended

Aug. 31, 2024

Notes to Financial Statements

Intangible Assets Disclosure [Text Block]

5.	INTANGIBLE ASSETS, NET

Intangible assets, net consisted of the following:

	As of August 31, 2024
	Gross Carrying Amount		Accumulated Amortization			Net Carrying Amount
Patents and trademarks	$	3,459,877	$	(2,854,532	)	$	605,345
Customer relationships		6,347,000		(1,269,400	)		5,077,600
Total intangible assets, net	$	9,806,877	$	(4,123,932	)	$	5,682,945

	As of August 31, 2023
	Gross Carrying Amount		Accumulated Amortization			Net Carrying Amount
Patents and trademarks	$	3,339,717	$	(2,680,965	)	$	658,752
Customer relationships		6,347,000		(846,267	)		5,500,733
Total intangible assets, net	$	9,686,717	$	(3,527,232	)	$	6,159,485

Amortization expense related to intangible assets was $596,700 for fiscal 2024 compared to $588,454 for fiscal 2023.

As of August 31, 2024, future amortization expense related to intangible assets for each of the next five fiscal years and thereafter is estimated as follows:

Fiscal 2025	$	606,911
Fiscal 2026		485,814
Fiscal 2027		450,739
Fiscal 2028		450,739
Fiscal 2029		450,739
Thereafter		3,238,003
Total	$	5,682,945

Note 6 - Investments in Joint Ventures (Tables)

12 Months Ended

Aug. 31, 2024

Notes Tables

Condensed Balance Sheet [Table Text Block]

	As of August 31, 2024
	Total		EXCOR		OTHER
Current assets	$	56,420,503	$	26,234,664	$	30,185,839
Total assets		64,183,071		31,513,288		32,669,783
Current liabilities		12,553,716		2,221,726		10,331,990
Noncurrent liabilities		323,199		—		323,199
Joint ventures’ equity		51,306,156		29,291,562		22,014,594
NTIC’s share of joint ventures’ equity		25,397,287		14,645,783		10,751,504
NTIC’s share of joint ventures’ undistributed earnings		23,645,685		14,614,878		9,030,807

	As of August 31, 2023
	Total		EXCOR		OTHER
Current assets	$	55,339,662	$	27,862,458	$	27,477,204
Total assets		59,729,348		30,054,277		29,675,071
Current liabilities		11,464,247		2,687,064		8,777,183
Noncurrent liabilities		323,762		—		323,762
Joint ventures’ equity		47,941,339		27,367,213		20,574,126
NTIC’s share of joint ventures’ equity		23,705,714		13,683,608		10,022,106
NTIC’s share of joint ventures’ undistributed earnings		20,493,861		12,075,524		8,418,337

Condensed Income Statement [Table Text Block]

	Fiscal Year Ended August 31, 2024
	Total		EXCOR		OTHER
Net sales	$	95,940,014	$	35,720,889	$	60,219,125
Gross profit		41,247,036		18,288,258		22,958,778
Net income		8,450,411		4,599,088		3,851,323
NTIC’s share of equity in income of joint ventures		4,223,296		2,299,274		1,924,022
NTIC’s dividends received from joint ventures		2,997,164		1,624,950		1,372,214

	Fiscal Year Ended August 31, 2023
	Total		EXCOR		OTHER
Net sales	$	100,682,316	$	39,642,380	$	61,039,936
Gross profit		40,096,561		19,016,389		21,080,172
Net income		8,934,198		5,730,311		3,203,887
NTIC’s share of equity in income of joint ventures		6,452,719		2,852,229		3,600,490
NTIC’s dividends received from joint ventures		5,639,198		2,459,500		3,179,698

Note 6 - Investments in Joint Ventures - Condensed Balance Sheet of EXCOR and All Other Joint Ventures (Details) - USD ($)	Aug. 31, 2024	Aug. 31, 2023
Current assets	$ 41,579,219	$ 39,671,556
Total assets	94,676,502	89,344,303
Current liabilities	17,896,943	16,721,372
Noncurrent liabilities	1,604,238	1,924,134
Joint ventures’ equity	71,193,991	66,356,273
Investments in joint ventures	25,397,287	23,705,714
EXCOR and All Other Joint Ventures [Member]
Investments in joint ventures	25,397,287	23,705,714
NTIC’s share of joint ventures’ undistributed earnings	23,645,685	20,493,861
EXCOR [Member]
Investments in joint ventures	14,645,783	13,683,608
NTIC’s share of joint ventures’ undistributed earnings	14,614,878	12,075,524
All Other [Member]
Investments in joint ventures	10,751,504	10,022,106
NTIC’s share of joint ventures’ undistributed earnings	9,030,807	8,418,337
Equity Method Investment, Nonconsolidated Investee or Group of Investees [Member]
Current assets	56,420,503	55,339,662
Total assets	64,183,071	59,729,348
Current liabilities	12,553,716	11,464,247
Noncurrent liabilities	323,199	323,762
Joint ventures’ equity	51,306,156	47,941,339
EXCOR [Member]
Current assets	26,234,664	27,862,458
Total assets	31,513,288	30,054,277
Current liabilities	2,221,726	2,687,064
Noncurrent liabilities	0	0
Joint ventures’ equity	29,291,562	27,367,213
All Other [Member]
Current assets	30,185,839	27,477,204
Total assets	32,669,783	29,675,071
Current liabilities	10,331,990	8,777,183
Noncurrent liabilities	323,199	323,762
Joint ventures’ equity	$ 22,014,594	$ 20,574,126

Note 11 - Segment and Geographic Information - Cost of Goods Sold by Segment (Details) - USD ($)	12 Months Ended
	Aug. 31, 2024	Aug. 31, 2023
Cost of goods sold	$ 51,273,155	$ 52,099,121
Direct Cost of Goods Sold [Member] \| ZERUST [Member]
Cost of goods sold	33,623,834	35,297,352
Direct Cost of Goods Sold [Member] \| NaturTec [Member]
Cost of goods sold	14,148,145	13,645,992
Indirect Cost of Goods Sold [Member]
Cost of goods sold	$ 3,501,176	$ 3,155,777

Note 15 - Commitments and Contingencies

12 Months Ended

Aug. 31, 2024

Notes to Financial Statements

Commitments and Contingencies Disclosure [Text Block]

15.

COMMITMENTS AND CONTINGENCIES

Operating Leases

The Company currently has operating leases for various buildings, equipment and vehicles. These leases are under non-cancelable operating lease agreements with expiration dates between November 30, 2024 and May 31, 2028. The Company has the option to extend certain leases to five or ten-year term(s) and has the right of first refusal on any sale.

The Company records lease liabilities within current liabilities or long-term liabilities based upon the length of time associated with the lease payments. The Company records its long-term operating leases as right-of-use assets. Upon initial adoption, using the modified retrospective transition approach, no leases with terms less than 12 months have been capitalized to the consolidated balance sheet consistent with ASC 842. Instead, these leases are recognized in the consolidated statement of operations on a straight-line expense throughout the lives of the leases. None of the Company’s leases contain common area maintenance or security agreements.

The Company has made certain assumptions and judgments when applying ASC 842, the most significant of which is that the Company elected the package of practical expedients available for transition that allow the Company to not reassess whether expired or existing contracts contain leases under the new definition of a lease, lease classification for expired or existing leases and whether previously capitalized initial direct costs would qualify for capitalization under ASC 842. Additionally, the Company did not elect to use hindsight when considering judgments and estimates such as assessments of lessee options to extend or terminate a lease or purchase the underlying asset. The Company has no contingent rent agreements.

Present Value of Leases

	August 31, 2024		August 31, 2023
Right-of-use assets, net	$	424,558	$	428,874

Current portion of lease liability		325,116		340,799
Lease liability, less current portion		99,442		88,075
Total lease liability	$	424,558	$	428,874

The weighted-average remaining lease term was 1.25 years and 1.21 years as of August 31, 2024 and 2023, respectively. The Company’s lease agreements do not provide a readily determinable implicit rate nor is it available to the Company from its lessors. Instead, as of August 31, 2024 and 2023, the Company estimates the weighted-average discount rate for its operating leases to be 7.61% and 7.60%, respectively, to present value based on the incremental borrowing rate.

Future minimum payments as of August 31, 2024 under these long-term operating leases are as follows (in thousands):

Fiscal 2025	$	325,116
Fiscal 2026		103,944
Fiscal 2027		21,596
Thereafter		—
Total future minimum lease payments		450,656
Less amount representing interest		(26,098	)
Present value of obligations under operating leases		424,558
Less current portion		(325,116	)
Long-term operating lease obligations	$	99,442

Operating lease cost under these leases was approximately $340,799 and $373,330 as of August 31, 2024 and 2023, respectively.

Annual Bonus Plan

On August 26, 2024, the Compensation Committee of the Board of Directors of the Company approved the material terms of an annual bonus plan for the Company’s executive officers as well as certain officers and employees for the fiscal year ending August 31, 2025. For fiscal 2025, as in past years, the total amount available under the bonus plan for all plan participants, including executive officers, is dependent upon the Company’s earnings before interest, taxes, and other income (EBITOI), as adjusted to take into account amounts to be paid under the bonus plan and certain other adjustments (Adjusted EBITOI). Each plan participant’s percentage of the overall bonus pool is based upon the number of plan participants, the individual’s annual base salary, and the individual’s position and level of responsibility within the Company. In the case of each of the Company’s executive officer participants, 75% of the amount of their individual bonus payout will be determined based upon the Company’s actual EBITOI for fiscal 2025 compared to a pre-established target EBITOI for fiscal 2025, and 25% of the payout will be determined based upon such executive officer’s achievement of certain pre-established individual performance objectives. The payment of bonuses under the plan is discretionary, and bonuses may be paid to executive officer participants in both cash and shares of the Company’s common stock, the exact amount and percentages of which are determined by the Company’s Board of Directors, upon recommendation of the Compensation Committee, after the completion of the Company’s consolidated financial statements for fiscal 2025.

On August 28, 2023, the Compensation Committee of the Board of Directors of the Company approved the material terms of an annual bonus plan for the Company’s executive officers as well as certain officers and employees for the fiscal year ending August 31, 2024. $2,200,000 was recognized for bonuses for the fiscal year ended August 31, 2024, $800,000 of the bonus is comprised of stock options granted to management on September 1, 2023 that will be expensed over three years and $1,400,000 will be paid out in cash and profit sharing subsequent to year end. This is compared to $2,000,000 recognized for bonuses for the fiscal year ended August 31, 2023, $800,000 of the bonus comprised of stock options granted to management on September 1, 2022 and $1,200,000 was paid out in cash and profit sharing subsequent to year end.

Concentrations

Three joint ventures (consisting of the Company’s joint ventures in the U.S., Japan and Thailand) accounted for 43.3% of the Company’s trade joint venture receivables as of August 31, 2024, and two joint ventures (consisting of the Company’s joint ventures in the United States and South Korea) accounted for 40.1% of the Company’s trade joint venture receivables as of August 31, 2023.

Legal Matters

From time to time, the Company is subject to various other claims and legal actions in the ordinary course of its business. The Company records a liability in its consolidated financial statements for costs related to claims, including future legal costs, settlements and judgments, where the Company has assessed that a loss is probable and an amount could be reasonably estimated. If the reasonable estimate of a probable loss is a range, the Company records the most probable estimate of the loss or the minimum amount when no amount within the range is a better estimate than any other amount. The Company discloses a contingent liability even if the liability is not probable or the amount is not estimable, or both, if there is a reasonable possibility that material loss may have been incurred. In the opinion of management, as of August 31, 2024, the amount of liability, if any, with respect to these matters, individually or in the aggregate, will not materially affect the Company’s consolidated results of operations, financial position, or cash flows.

Certain prior year amounts have been reclassified for consistency with the current year presentation. These reclassifications had no effect on the reported results of operations. An adjustment has been made to the Consolidated Balance Sheet and Consolidated Statements of Cash Flows for fiscal year ended August 31, 2023 to reclassify tax receivables and tax payables.

Consolidated Balance Sheets (Parentheticals) - USD ($)	Aug. 31, 2024	Aug. 31, 2023
Accounts Receivable, Allowance for Credit Loss, Current	$ 310,000	$ 533,000
Preferred Stock, No Par Value (in dollars per share)	$ 0	$ 0
Preferred Stock, No Par Value (in dollars per share)	$ 0	$ 0
Preferred Stock, Shares Authorized (in shares)	10,000	10,000
Preferred Stock, Shares Issued (in shares)	0	0
Preferred Stock, Shares Outstanding (in shares)	0	0
Common Stock, Par or Stated Value Per Share (in dollars per share)	$ 0.02	$ 0.02
Common Stock, Shares Authorized (in shares)	15,000,000	15,000,000
Common Stock, Shares, Issued (in shares)	9,466,976	9,424,102
Common Stock, Shares, Outstanding (in shares)	9,466,976	9,424,102

Note 8 - Stockholders' Equity (Details Textual) - $ / shares					12 Months Ended
	Mar. 01, 2024	Sep. 01, 2023	Mar. 01, 2023	Sep. 01, 2022	Aug. 31, 2024	Aug. 31, 2023
Stock Repurchased and Retired During Period, Shares					0	0
Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Grants in Period, Gross					269,844	277,613
Share-Based Compensation Arrangements by Share-Based Payment Award, Options, Grants in Period, Weighted Average Exercise Price					$ 13.25	$ 11.41
Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercises in Period, Including Cashless Exercises					74,309	265,209
Share-Based Compensation Arrangements by Share-Based Payment Award, Options, Exercises in Period, Weighted Average Exercise Price					$ 9.76	$ 6.46
Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Exercises in Period					36,094	184,432
Stock Issued During Period, Shares, Employee Stock Purchase Plans	3,284	3,496	3,566	3,620
The 2024 Plan [Member]
Share-Based Compensation Arrangement by Share-Based Payment Award, Number of Shares Available for Grant					957,059
The 2024 Plan [Member] \| Employees and Directors [Member]
Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Grants in Period, Gross					269,844
Share-Based Compensation Arrangements by Share-Based Payment Award, Options, Grants in Period, Weighted Average Exercise Price					$ 13.25
The 2019 Plan [member] \| Employees and Directors [Member]
Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Grants in Period, Gross						277,613
Share-Based Compensation Arrangements by Share-Based Payment Award, Options, Grants in Period, Weighted Average Exercise Price						$ 11.41
ESPP [Member]
Share-Based Compensation Arrangement by Share-Based Payment Award, Number of Shares Available for Grant					55,254

Consolidated Statements of Operations - USD ($)	12 Months Ended
Consolidated Statements of Operations - USD ($)	Aug. 31, 2024	Aug. 31, 2023
NET SALES:
Net sales	$ 85,059,517	$ 79,902,952
Cost of goods sold	51,273,155	52,099,121
Gross profit	33,786,362	27,803,831
Joint Venture Operations [Abstract]
Equity in income from joint ventures	4,223,296	6,452,719
Fees for services provided to joint ventures	5,251,782	5,189,185
To Total joint venture operations	9,475,078	11,641,904
Operating Expenses [Abstract]
Selling expenses	16,413,672	15,290,897
General and administrative expenses	14,176,494	13,166,270
Research and development expenses	4,802,791	4,967,922
Total operating expenses	35,392,957	33,425,089
OPERATING INCOME	7,868,483	6,020,646
INTEREST INCOME	118,827	28,490
INTEREST EXPENSE	(340,129)	(461,805)
INCOME BEFORE INCOME TAX EXPENSE	7,647,181	5,587,331
INCOME TAX EXPENSE	1,325,797	1,349,600
NET INCOME	6,321,384	4,237,731
NET INCOME ATTRIBUTABLE TO NON-CONTROLLING INTERESTS	912,302	1,325,455
NET INCOME ATTRIBUTABLE TO NTIC	$ 5,409,082	$ 2,912,276
NET INCOME ATTRIBUTABLE TO NTIC PER COMMON SHARE:
Basic (in dollars per share)	$ 0.57	$ 0.31
Diluted (in dollars per share)	$ 0.55	$ 0.3
WEIGHTED AVERAGE COMMON SHARES ASSUMED OUTSTANDING:
Basic (in shares)	9,434,020	9,359,504
Diluted (in shares)	9,833,450	9,693,482
CASH DIVIDENDS DECLARED PER COMMON SHARE (in dollars per share)	$ 0.28	$ 0.28

Note 6 - Investments in Joint Ventures (Details Textual) - USD ($)	1 Months Ended
	Aug. 31, 2023	Aug. 31, 2024
Tianjin Zerust [Member]
Subsidiary, Ownership Percentage, Parent		60.00%
Tianjin Zerust [Member]
Equity Method Investment, Deferred Gain on Sale	$ 676,614
Tianjin Zerust [Member] \| NTI Asean LLC [Member]
Equity Method Investment, Deferred Gain on Sale	1,986,027
Discontinued Operation, Tax Effect of Gain (Loss) from Disposal of Discontinued Operation	198,603
Legal Fees	95,890
Management Bonus Expense	$ 250,000

Note 8 - Stockholders' Equity (Tables)

12 Months Ended

Aug. 31, 2024

Notes Tables

Dividends Declared [Table Text Block]

Declaration Date	Amount	Record Date	Payable Date
October 18, 2023	$0.07	November 1, 2023	November 15, 2023
January 17, 2024	$0.07	January 31, 2024	February 14, 2024
April 17, 2024	$0.07	May 1, 2024	May 15, 2024
July 17, 2024	$0.07	July 31, 2024	August 14, 2024

Declaration Date	Amount	Record Date	Payable Date
October 20, 2022	$0.07	November 3, 2022	November 16, 2022
January 20, 2023	$0.07	February 1, 2023	February 15, 2023
April 21, 2023	$0.07	May 3, 2023	May 17, 2023
July 17, 2023	$0.07	August 2, 2023	August 16, 2023

Note 11 - Segment and Geographic Information - Total Net Sales by Geographic Distribution (Details) - USD ($)	12 Months Ended
	Aug. 31, 2024	Aug. 31, 2023
Net sales	$ 85,059,517	$ 79,902,952
CHINA
Net sales	14,245,238	13,469,075
BRAZIL
Net sales	5,994,372	5,969,314
INDIA
Net sales	22,189,317	19,916,834
Other Countries [Member]
Net sales	12,137,925	11,993,375
UNITED STATES
Net sales	$ 30,492,665	$ 28,554,354

- Definition

+ References

+ Details

Note 15 - Commitments and Contingencies (Tables)

12 Months Ended

Aug. 31, 2024

Notes Tables

Schedule of Components of Operating Lease Assets and Liabilities [Table Text Block]

	August 31, 2024		August 31, 2023
Right-of-use assets, net	$	424,558	$	428,874

Current portion of lease liability		325,116		340,799
Lease liability, less current portion		99,442		88,075
Total lease liability	$	424,558	$	428,874

Lessee, Operating Lease, Liability, to be Paid, Maturity [Table Text Block]

Fiscal 2025	$	325,116
Fiscal 2026		103,944
Fiscal 2027		21,596
Thereafter		—
Total future minimum lease payments		450,656
Less amount representing interest		(26,098	)
Present value of obligations under operating leases		424,558
Less current portion		(325,116	)
Long-term operating lease obligations	$	99,442

Note 14 - Income Taxes - Reconciliation of the Total Amounts of Unrecognized Tax Benefits (Details) - USD ($)	12 Months Ended
	Aug. 31, 2024	Aug. 31, 2023
Gross unrecognized tax benefits, balance	$ 361,200	$ 319,000
Gross (decreases) increases – prior period tax positions	(5,400)	100
Gross increases – current period tax positions	43,500	42,100
Gross unrecognized tax benefits, balance	$ 399,300	$ 361,200

Note 16 - Supplemental Cash Flow Information - Supplemental Disclosures of Cash Flow Information (Details) - USD ($)	12 Months Ended
	Aug. 31, 2024	Aug. 31, 2023
Cash paid for income tax	$ 1,191,538	$ 1,064,894
Cash paid for interest	340,129	461,805
Cash paid for operating leases	$ 340,799	$ 373,330

Note 7 - Corporate Debt (Details Textual)	Jan. 06, 2023 USD ($)	Aug. 31, 2024 USD ($)	Aug. 31, 2023 USD ($)	May 30, 2023 USD ($)	May 30, 2023 CNY (¥)
NTIC China [Member] \| Term Loan in May [Member]
Debt Instrument, Face Amount				$ 1,450,000	¥ 10,000,000
Debt Instrument, Interest Rate, Stated Percentage				3.25%	3.25%
Long-Term Debt		$ 2,820,835
Revolving Credit Facility [Member] \| JP Morgan Chase Bank [Member]
Line of Credit Facility, Maximum Borrowing Capacity	$ 10,000,000
Long-Term Line of Credit		$ 4,291,608	$ 3,600,000
CB Floating Rate Floor	2.50%
Line of Credit Facility, Interest Rate at Period End		7.44%	6.27%
Debt Instrument, Covenants, Fixed Charge Coverage Ratio	1.25
Revolving Credit Facility [Member] \| JP Morgan Chase Bank [Member] \| Secured Overnight Financing Rate (SOFR) [Member]
Debt Instrument, Basis Spread on Variable Rate	0.10%
Revolving Credit Facility [Member] \| JP Morgan Chase Bank [Member] \| Adjusted SOFR Rate Applicable Margin [Member]
Debt Instrument, Basis Spread on Variable Rate	2.15%
Standby Letters of Credit [Member] \| JP Morgan Chase Bank [Member]
Line of Credit Facility, Maximum Borrowing Capacity	$ 5,000,000

Document And Entity Information - USD ($) $ in Millions	12 Months Ended
Document And Entity Information - USD ($) $ in Millions	Aug. 31, 2024	Nov. 19, 2024	Feb. 29, 2024
Document Information [Line Items]
Document Type	10-K
Document Annual Report	true
Document Period End Date	Aug. 31, 2024
Document Transition Report	false
Entity File Number	001-11038
Entity Registrant Name	NORTHERN TECHNOLOGIES INTERNATIONAL CORPORATION
Entity Incorporation, State or Country Code	DE
Entity Tax Identification Number	41-0857886
Entity Address, Address Line One	4201 Woodland Road
Entity Address, City or Town	Circle Pines
Entity Address, State or Province	MN
Entity Address, Postal Zip Code	55014
City Area Code	763
Local Phone Number	225-6600
Title of 12(b) Security	Common stock, par value $0.02 per share
Trading Symbol	NTIC
Security Exchange Name	NASDAQ
Entity Well-known Seasoned Issuer	No
Entity Voluntary Filers	No
Entity Current Reporting Status	Yes
Entity Interactive Data Current	Yes
Entity Filer Category	Non-accelerated Filer
Entity Small Business	false
Entity Emerging Growth Company	false
ICFR Auditor Attestation Flag	false
Document Financial Statement Error Correction [Flag]	false
Entity Shell Company	false
Entity Public Float			$ 98.5
Entity Common Stock, Shares Outstanding (in shares)		9,470,507
Auditor Firm ID	23
Auditor Name	Baker Tilly US, LLP
Auditor Location	Minneapolis, Minnesota
Entity Central Index Key	0000875582
Current Fiscal Year End Date	--08-31
Document Fiscal Year Focus	2024
Document Fiscal Period Focus	FY
Amendment Flag	false

Note 13 - Related Party Transactions

12 Months Ended

Aug. 31, 2024

Notes to Financial Statements

13.

RELATED PARTY TRANSACTIONS

During both fiscal 2024 and fiscal 2023, the Company made consulting payments of $144,000 to Bioplastic Polymers LLC, an entity owned by Ramani Narayan, Ph.D., a director of the Company. Dr. Narayan provides certain consulting services to the Company relating to the Natur-Tec® business and bioplastics program.

- Definition

The entire disclosure for related party transactions. Examples of related party transactions include transactions between (a) a parent company and its subsidiary; (b) subsidiaries of a common parent; (c) and entity and its principal owners; and (d) affiliates.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 946
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 2
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480990/946-20-50-2

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Topic 946
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 5
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480990/946-20-50-5

Reference 3: http://www.xbrl.org/2003/role/disclosureRef
-Topic 946
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 6
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480990/946-20-50-6

Reference 4: http://www.xbrl.org/2003/role/disclosureRef
-Topic 946
-SubTopic 235
-Name Accounting Standards Codification
-Section 50
-Paragraph 2
-Subparagraph (c)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147477968/946-235-50-2

Reference 5: http://www.xbrl.org/2003/role/disclosureRef
-Topic 946
-SubTopic 235
-Name Accounting Standards Codification
-Section 50
-Paragraph 2
-Subparagraph (e)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147477968/946-235-50-2

Reference 6: http://www.xbrl.org/2003/role/disclosureRef
-Topic 850
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 1
-Subparagraph (d)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147483326/850-10-50-1

Reference 7: http://www.xbrl.org/2003/role/disclosureRef
-Topic 946
-SubTopic 220
-Name Accounting Standards Codification
-Section S99
-Paragraph 1
-Subparagraph (SX 210.6-07(2)(g)(3))
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147479134/946-220-S99-1

Reference 8: http://www.xbrl.org/2003/role/disclosureRef
-Topic 946
-SubTopic 220
-Name Accounting Standards Codification
-Section S99
-Paragraph 1
-Subparagraph (SX 210.6-07(2)(c))
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147479134/946-220-S99-1

Reference 9: http://www.xbrl.org/2003/role/disclosureRef
-Topic 946
-SubTopic 220
-Name Accounting Standards Codification
-Section S99
-Paragraph 1
-Subparagraph (SX 210.6-07(2)(e))
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147479134/946-220-S99-1

Reference 10: http://www.xbrl.org/2003/role/disclosureRef
-Topic 850
-Name Accounting Standards Codification
-Publisher FASB
-URI https://asc.fasb.org/850/tableOfContent

Reference 11: http://www.xbrl.org/2003/role/disclosureRef
-Topic 850
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 6
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147483326/850-10-50-6

Reference 12: http://www.xbrl.org/2003/role/disclosureRef
-Topic 850
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 1
-Subparagraph (a)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147483326/850-10-50-1

Reference 13: http://www.xbrl.org/2003/role/disclosureRef
-Topic 850
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 1
-Subparagraph (b)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147483326/850-10-50-1

+ Details

Note 15 - Commitments and Contingencies (Details Textual) - USD ($)	12 Months Ended
	Aug. 31, 2024	Aug. 31, 2023
Lessee, Operating Lease, Option to Extend Term One	5 years
Lessee, Operating Lease, Option to Extend Term Two	10 years
Finance and Operating Lease, Weighted Average Remaining Lease Term	1 year 3 months	1 year 2 months 15 days
Operating Lease, Weighted Average Discount Rate, Percent	7.61%	7.60%
Operating Lease, Expense	$ 340,799	$ 373,330
Accrued Bonuses	$ 2,200,000	$ 2,000,000
Entity Wide Trade Joint Venture Receivables, Three Joint Ventures, Percentage	43.30%	40.10%
Stock Options Granted to Management [Member]
Accrued Bonuses	$ 800,000	$ 800,000
Paid Out in Cash and Profit Sharing [Member]
Accrued Bonuses	$ 1,400,000	$ 1,200,000
Annual Bonus Plan [Member] \| Executive Officer [Member]
Percentage of Individual Bonus Payout Determined by Actual Versus Targeted EBITOI Results	75.00%
Percentage of Individuals Payout Determined Upon Achievement of Certain Pre-Established Individual Performance Objectives	25.00%

Note 9 - Net Income Per Common Share

12 Months Ended

Aug. 31, 2024

Notes to Financial Statements

Earnings Per Share [Text Block]

9.	NET INCOME PER COMMON SHARE

Basic net income per common share is computed by dividing net income by the weighted average number of common shares outstanding. Diluted net income per share assumes the exercise of stock options using the treasury stock method, if dilutive.

The following is a reconciliation of the net income per share computation for fiscal 2024 and fiscal 2023:

Numerator:	August 31, 2024		August 31, 2023
Net income attributable to NTIC	$	5,409,082	$	2,912,276

Denominator:
Basic-weighted shares outstanding		9,434,020		9,359,504
Weighted shares assumed upon exercise of stock options		399,430		333,978
Diluted – weighted shares outstanding		9,833,450		9,693,482

Basic net income per share:	$	0.57	$	0.31
Diluted net income per share:	$	0.55	$	0.30

The dilutive impact summarized above relates to the periods when the average market price of the Company’s common stock exceeded the exercise price of the potentially dilutive option securities granted. Net income per common share was based on the weighted average number of common shares outstanding during the periods when computing the basic net income per share. When dilutive, stock options are included as equivalents using the treasury stock market method when computing the diluted net income per share. Excluded from the computation of diluted net income per share as of August 31, 2024 were options outstanding to purchase 305,514 shares of common stock. Excluded from the computation of diluted net income per share as of August 31, 2023 were options outstanding to purchase 322,246 shares of common stock.

Note 16 - Supplemental Cash Flow Information

12 Months Ended

Aug. 31, 2024

Notes to Financial Statements

Cash Flow, Supplemental Disclosures [Text Block]

16.

SUPPLEMENTAL CASH FLOW INFORMATION

Supplemental disclosures of cash flow information consisted of:

	Fiscal Year Ended August 31,
	2024		2023
Cash paid for income tax	$	1,191,538	$	1,064,894
Cash paid for interest		340,129		461,805
Cash paid for operating leases		340,799		373,330

Note 10 - Stock-based Compensation - Black-Scholes Option-pricing Model Assumptions (Details)	12 Months Ended
	Aug. 31, 2024	Aug. 31, 2023
Dividend yield	2.18%	2.44%
Expected volatility	46.10%	45.20%
Expected life of option (years) (Year)	5 years
Weighted average risk-free interest rate	4.23%	3.31%

Note 14 - Income Taxes (Details Textual) - USD ($)	12 Months Ended
Note 14 - Income Taxes (Details Textual) - USD ($)	Aug. 31, 2024	Aug. 31, 2023
Effective Income Tax Rate Reconciliation, at Federal Statutory Income Tax Rate, Percent	21.00%	21.00%
Income Tax Expense (Benefit)	$ (1,325,797)	$ (1,349,600)
Income Tax Expense (Benefit)	1,325,797	1,349,600
Deferred Tax Assets, Operating Loss Carryforwards, Domestic	203,000
Deferred Tax Assets, Operating Loss Carryforwards, State and Local	274,000
Deferred Tax Assets, Operating Loss Carryforwards, Foreign	481,200
Tax Credit Carryforward, Valuation Allowance	12,694,800	11,933,700
Valuation Allowance, Deferred Tax Asset, Increase (Decrease), Amount	761,100	340,800
Unrecognized Tax Benefits, Income Tax Penalties and Interest Accrued	0	0
Foreign Tax Jurisdiction [Member]
Income Tax Expense (Benefit)	180,000	(51,600)
Income Tax Expense (Benefit)	(180,000)	$ 51,600
Tax Credit Carryforward, Amount	3,844,800
Federal and State Tax [Member]
Tax Credit Carryforward, Amount	$ 5,405,560

Consolidated Statements of Cash Flows - USD ($)	12 Months Ended
Consolidated Statements of Cash Flows - USD ($)	Aug. 31, 2024	Aug. 31, 2023
CASH FLOWS FROM OPERATING ACTIVITIES:
NET INCOME	$ 6,321,384	$ 4,237,731
Adjustments to reconcile net income to net cash provided by operating activities:
Stock-based compensation	1,381,169	1,337,734
Depreciation expense	1,156,364	1,042,505
Amortization expense	596,700	588,454
Loss on disposal of assets	(0)	8,534
Change in allowance for credit losses	(233,539)	94,000
Equity in income from joint ventures	(4,223,296)	(6,452,719)
Dividends received from joint ventures	2,997,164	5,639,198
Deferred income taxes	(336,252)	(395,001)
Changes in current assets and liabilities:
Trade, excluding joint ventures	(2,814,964)	(1,956,234)
Trade, joint ventures	(201,100)	509,949
Fees for services provided to joint ventures	61,578	468,523
Dividends receivable from joint venture	(1,986,027)	1,986,027
Income taxes	(311,731)	(325,233)
Inventories, net	(1,333,954)	3,030,665
Prepaid expenses and other	308,064	287,970
Accounts payable	449,009	(1,509,226)
Income tax payable	(151,720)	(504,403)
Accrued liabilities	232,290	1,441,867
Net cash provided by operating activities	5,883,193	5,541,219
CASH FLOWS FROM INVESTING ACTIVITIES:
Proceeds from the sale of available for sale securities	(0)	(5,590)
Purchases of property and equipment	(3,298,067)	(3,247,652)
Proceeds from sale of property and equipment	0	13,000
Investments in patents	(120,161)	(114,062)
Net cash used in investing activities	(3,418,228)	(3,343,124)
CASH FLOWS FROM FINANCING ACTIVITIES:
Dividend received by non-controlling interest	(1,255,076)	(655,574)
Repayments on the line of credit	(0)	2,300,000
Proceeds from line of credit	691,608	0
Proceeds from term loan	0	2,812,504
Dividends paid on NTIC common stock	(2,642,298)	(2,624,462)
Proceeds from employee stock purchase plan	79,967	75,464
Proceeds from exercise of stock options	168,519	638,270
Net cash used in financing activities	(2,957,280)	(2,053,798)
EFFECT OF EXCHANGE RATE CHANGES ON CASH AND CASH EQUIVALENTS	38,326	(72,014)
NET (DECREASE) INCREASE IN CASH AND CASH EQUIVALENTS	(453,989)	72,283
CASH AND CASH EQUIVALENTS AT BEGINNING OF YEAR	5,406,173	5,333,890
CASH AND CASH EQUIVALENTS AT END OF YEAR	$ 4,952,184	$ 5,406,173

Note 6 - Investments in Joint Ventures - Condensed Income Statement of EXCOR and All Other Joint Ventures (Details) - USD ($)	12 Months Ended
	Aug. 31, 2024	Aug. 31, 2023
Net sales	$ 85,059,517	$ 79,902,952
Gross profit	33,786,362	27,803,831
Net income	5,409,082	2,912,276
NTIC’s share of equity in income of joint ventures	4,223,296	6,452,719
EXCOR and All Other Joint Ventures [Member]
Net income	8,450,411	8,934,198
NTIC’s share of equity in income of joint ventures	4,223,296	6,452,719
NTIC’s dividends received from joint ventures	2,997,164	5,639,198
EXCOR [Member]
Net income	4,599,088	5,730,311
NTIC’s share of equity in income of joint ventures	2,299,274	2,852,229
NTIC’s dividends received from joint ventures	1,624,950	2,459,500
All Other [Member]
Net income	3,851,323	3,203,887
NTIC’s share of equity in income of joint ventures	1,924,022	3,600,490
NTIC’s dividends received from joint ventures	1,372,214	3,179,698
Equity Method Investment, Nonconsolidated Investee or Group of Investees [Member]
Net sales	95,940,014	100,682,316
Gross profit	41,247,036	40,096,561
EXCOR [Member]
Net sales	35,720,889	39,642,380
Gross profit	18,288,258	19,016,389
All Other [Member]
Net sales	60,219,125	61,039,936
Gross profit	$ 22,958,778	$ 21,080,172

Note 10 - Stock-based Compensation - Stock Option Activity (Details) - USD ($)	12 Months Ended
	Aug. 31, 2024	Aug. 31, 2023
Outstanding, balance (in shares)	1,557,130	1,544,726
Outstanding, weighted average exercise price (in dollars per share)	$ 11.08	$ 10.23
Options granted (in shares)	269,844	277,613
Options granted, weighted average exercise price (in dollars per share)	$ 13.25	$ 11.41
Options exercised (in shares)	(74,309)	(265,209)
Options exercised, weighted average exercise price (in dollars per share)	$ 9.76	$ 6.46
Options terminated (in shares)	0	0
Options terminated, weighted average exercise price (in dollars per share)	$ 0	$ 0
Outstanding, balance (in shares)	1,752,665	1,557,130
Outstanding, weighted average exercise price (in dollars per share)	$ 11.47	$ 11.08
Outstanding, aggregate intrinsic value	$ 4,289,563
Exercisable, balance (in shares)	1,297,635
Exercisable, weighted average exercise price (in dollars per share)	$ 10.91
Exercisable, aggregate intrinsic value	$ 4,045,286

Note 5 - Intangible Assets, Net - Intangible Assets, Net (Details) - USD ($)	Aug. 31, 2024	Aug. 31, 2023
Gross Carrying Amount	$ 9,806,877	$ 9,686,717
Accumulated Amortization	(4,123,932)	(3,527,232)
Intangible assets, net	5,682,945	6,159,485
Gross Carrying Amount	9,806,877	9,686,717
Accumulated Amortization	(4,123,932)	(3,527,232)
Net Carrying Amount	5,682,945	6,159,485
Patents and Trademarks [Member]
Gross Carrying Amount	3,459,877	3,339,717
Accumulated Amortization	(2,854,532)	(2,680,965)
Intangible assets, net	605,345	658,752
Gross Carrying Amount	3,459,877	3,339,717
Accumulated Amortization	(2,854,532)	(2,680,965)
Net Carrying Amount	605,345	658,752
Customer Relationships [Member]
Gross Carrying Amount	6,347,000	6,347,000
Accumulated Amortization	(1,269,400)	(846,267)
Intangible assets, net	5,077,600	5,500,733
Gross Carrying Amount	6,347,000	6,347,000
Accumulated Amortization	(1,269,400)	(846,267)
Net Carrying Amount	$ 5,077,600	$ 5,500,733

Note 14 - Income Taxes (Tables)

12 Months Ended

Aug. 31, 2024

Notes Tables

Schedule of Components of Income Tax Expense (Benefit) [Table Text Block]

	Fiscal Year Ended August 31,
	2024			2023
Current:
Federal	$	—		$	—
State		48,000			26,000
Foreign		1,601,000			1,857,000
		1,649,000			1,883,000
Deferred:
Federal		—			—
State		—			—
Foreign		(323,203	)		(533,400	)
		(323,203	)		(533,400	)
	$	1,325,797		$	1,349,600

Schedule of Effective Income Tax Rate Reconciliation [Table Text Block]

	Fiscal Year Ended August 31,
	2024			2023
Tax computed at statutory rates	$	1,627,000		$	1,352,000
State income tax, net of federal benefit		21,000			(20,000	)
Tax effect on equity in income of international joint ventures		(887,000	)		(1,354,000	)
Tax effect of foreign operations		371,000			1,005,000
Deemed repatriation		4,000			—
Foreign tax credit		(321,000	)		783,000
Research and development credit		(512,000	)		(710,000	)
Valuation allowance		1,066,000			354,000
Stock based compensation		175,000			31,000
Non-controlling interest		(71,000	)		(59,000	)
Prior year true-up		(146,000	)		(51,000	)
Other		(1,203	)		18,600
	$	1,325,797		$	1,349,600

Schedule of Deferred Tax Assets and Liabilities [Table Text Block]

	August 31,
	2024			2023
Stock-based compensation	$	637,100		$	556,700
Foreign tax credit carryforward		3,844,800			4,036,000
Capitalized research and experimentation		2,037,800			1,106,000
Other credit and loss carryforward		5,974,200			6,034,000
Other		965,368			1,048,800
Total deferred tax assets		13,459,268			12,781,500
Valuation allowance		(12,694,800	)		(11,933,700	)
Total deferred tax assets after valuation allowance		764,468			847,800
Right-of-use asset		(64,700	)		(66,200	)
Intangible assets		(1,564,200	)		(1,670,700	)
Unremitted foreign earnings		(34,800	)		(214,800	)
Other		(61,100	)		(201,215	)
Total deferred tax liabilities		(1,724,800	)		(2,152,915	)
Net deferred tax liabilities	$	(960,332	)	$	(1,305,115	)

Schedule of Unrecognized Tax Benefits Roll Forward [Table Text Block]

	Fiscal Year Ended August 31,
	2024			2023
Gross unrecognized tax benefits – beginning balance	$	361,200		$	319,000
Gross (decreases) increases – prior period tax positions		(5,400	)		100
Gross increases – current period tax positions		43,500			42,100
Gross unrecognized tax benefits – ending balance	$	399,300		$	361,200

Note 9 - Net Income Per Common Share (Tables)

12 Months Ended

Aug. 31, 2024

Notes Tables

Schedule of Earnings Per Share, Basic and Diluted [Table Text Block]

Numerator:	August 31, 2024		August 31, 2023
Net income attributable to NTIC	$	5,409,082	$	2,912,276

Denominator:
Basic-weighted shares outstanding		9,434,020		9,359,504
Weighted shares assumed upon exercise of stock options		399,430		333,978
Diluted – weighted shares outstanding		9,833,450		9,693,482

Basic net income per share:	$	0.57	$	0.31
Diluted net income per share:	$	0.55	$	0.30

Consolidated Balance Sheets - USD ($)	Aug. 31, 2024	Aug. 31, 2023
CURRENT ASSETS:
Cash and cash equivalents	$ 4,952,184	$ 5,406,173
Trade excluding joint ventures, less allowance for credit losses of $310,000 and $533,000 as of August 31, 2024 and 2023, respectively	18,798,067	15,645,130
Trade, joint ventures	389,012	187,912
Fees for services provided to joint ventures	1,235,016	1,296,594
Dividend receivable from joint venture	0	1,986,027
Income taxes	392,293	325,233
Inventories, net	14,390,844	13,096,489
Prepaid expenses	1,421,803	1,727,998
Total current assets	41,579,219	39,671,556
PROPERTY AND EQUIPMENT, NET	16,265,653	14,065,354
OTHER ASSETS:
Investments in joint ventures	25,397,287	23,705,714
Deferred income tax, net	544,464	530,944
Intangible assets, net	5,682,945	6,159,485
Goodwill	4,782,376	4,782,376
Operating lease right of use assets	424,558	428,874
Total other assets	36,831,630	35,607,393
Total assets	94,676,502	89,344,303
Liabilities, Current [Abstract]
Line of credit	4,291,608	3,600,000
Term loan	2,820,835	2,757,176
Accounts payable	6,393,355	6,056,329
Income taxes payable	327,781	501,379
Accrued liabilities:
Payroll and related benefits	3,163,372	2,305,400
Other	574,876	1,160,289
Current portion of operating leases	325,116	340,799
Total current liabilities	17,896,943	16,721,372
LONG-TERM LIABILITIES:
Deferred income tax, net	1,504,796	1,836,059
Operating leases, less current portion	99,442	88,075
Total long-term liabilities	1,604,238	1,924,134
Commitments and Contingencies
EQUITY:
Preferred stock, no par value; authorized 10,000 shares; none issued and outstanding	0	0
Common stock, $0.02 par value per share; authorized 15,000,000 shares; issued and outstanding 9,466,976 and 9,424,102, respectively	189,340	188,482
Additional paid-in capital	23,615,564	21,986,767
Retained earnings	53,771,211	51,004,427
Accumulated other comprehensive loss	(6,382,124)	(6,823,403)
Stockholders’ equity	71,193,991	66,356,273
Non-controlling interests	3,981,330	4,342,524
Total equity	75,175,321	70,698,797
Total liabilities and equity	94,676,502	89,344,303
Intangible Assets Excluding Patents and Trademarks [Member]
OTHER ASSETS:
Intangible assets, net	$ 5,682,945	$ 6,159,485

Note 4 - Property and Equipment, Net - Components of Property and Equipment, Net (Details) - USD ($)	Aug. 31, 2024	Aug. 31, 2023
Land	$ 1,238,180	$ 496,965
Buildings and improvements	14,760,250	16,433,827
Construction in process	3,086,479	816,565
Machinery and equipment	7,276,151	5,984,364
Property, Plant and Equipment, Gross	26,361,060	23,731,721
Less accumulated depreciation	(10,095,407)	(9,666,367)
Property, Plant and Equipment, Net	$ 16,265,653	$ 14,065,354

Note 16 - Supplemental Cash Flow Information (Tables)

12 Months Ended

Aug. 31, 2024

Notes Tables

Schedule of Cash Flow, Supplemental Disclosures [Table Text Block]

	Fiscal Year Ended August 31,
	2024		2023
Cash paid for income tax	$	1,191,538	$	1,064,894
Cash paid for interest		340,129		461,805
Cash paid for operating leases		340,799		373,330

Note 14 - Income Taxes - Provision for Income Taxes (Details) - USD ($)	12 Months Ended
	Aug. 31, 2024	Aug. 31, 2023
Federal	$ 0	$ 0
State	48,000	26,000
Foreign	1,601,000	1,857,000
Current Income Tax Expense (Benefit)	1,649,000	1,883,000
Federal	0	0
State	0	0
Foreign	(323,203)	(533,400)
Deferred Income Tax Expense (Benefit)	(323,203)	(533,400)
Income Tax Expense (Benefit)	$ 1,325,797	$ 1,349,600

- Definition

Amount of current income tax expense (benefit) and deferred income tax expense (benefit) pertaining to continuing operations.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 270
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 1
-Subparagraph (i)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482964/270-10-50-1

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Topic 280
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 32
-Subparagraph (ee)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482810/280-10-50-32

Reference 3: http://www.xbrl.org/2003/role/disclosureRef
-Topic 740
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 12
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482685/740-10-50-12

Reference 4: http://www.xbrl.org/2003/role/exampleRef
-Topic 740
-SubTopic 10
-Name Accounting Standards Codification
-Section 55
-Paragraph 231
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482663/740-10-55-231

Reference 5: http://www.xbrl.org/2003/role/disclosureRef
-Topic 250
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 9
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147483443/250-10-50-9

Reference 6: http://www.xbrl.org/2003/role/disclosureRef
-Topic 740
-SubTopic 10
-Name Accounting Standards Codification
-Section S99
-Paragraph 1
-Subparagraph (SAB Topic 6.I.7)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147479360/740-10-S99-1

Reference 7: http://www.xbrl.org/2003/role/disclosureRef
-Topic 250
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 8
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147483443/250-10-50-8

Reference 8: http://www.xbrl.org/2003/role/disclosureRef
-Topic 740
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 10
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482685/740-10-50-10

Reference 9: http://www.xbrl.org/2003/role/disclosureRef
-Topic 280
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 22
-Subparagraph (h)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482810/280-10-50-22

Reference 10: http://www.xbrl.org/2003/role/disclosureRef
-Topic 944
-SubTopic 220
-Name Accounting Standards Codification
-Section S99
-Paragraph 1
-Subparagraph (SX 210.7-04(9))
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147477250/944-220-S99-1

Reference 11: http://www.xbrl.org/2003/role/disclosureRef
-Name Accounting Standards Codification
-Section 45
-Paragraph 2
-Subparagraph (a)
-SubTopic 20
-Topic 740
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482659/740-20-45-2

Reference 12: http://www.xbrl.org/2003/role/disclosureRef
-Name Accounting Standards Codification
-Section S99
-Paragraph 1
-Subparagraph (SX 210.4-08(h))
-SubTopic 10
-Topic 235
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480678/235-10-S99-1

+ Details

Note 5 - Intangible Assets, Net - Future Amortization Expense (Details) - USD ($)	Aug. 31, 2024	Aug. 31, 2023
Fiscal 2025	$ 606,911
Fiscal 2026	485,814
Fiscal 2027	450,739
Fiscal 2028	450,739
Fiscal 2029	450,739
Thereafter	3,238,003
Total	$ 5,682,945	$ 6,159,485

Note 6 - Investments in Joint Ventures

12 Months Ended

Aug. 31, 2024

Notes to Financial Statements

Equity Method Investments and Joint Ventures Disclosure [Text Block]

6.	INVESTMENTS IN JOINT VENTURES

The consolidated financial statements of the Company’s foreign joint ventures are initially prepared using the accounting principles accepted in the respective joint ventures’ countries of domicile. Amounts related to foreign joint ventures reported in the below tables and the accompanying consolidated financial statements have subsequently been adjusted to conform with U.S. GAAP in all material respects. All material profits on sales recorded that remain on the consolidated balance sheet from the Company to its joint ventures and from joint ventures to other joint ventures have been eliminated for financial reporting purposes.

Financial information from the audited and unaudited financial statements of the Company’s joint venture in Germany, Excor Korrosionsschutz – Technologien und Produkte GmbH (EXCOR), and all the Company’s other joint ventures are summarized as follows:

	As of August 31, 2024
	Total		EXCOR		OTHER
Current assets	$	56,420,503	$	26,234,664	$	30,185,839
Total assets		64,183,071		31,513,288		32,669,783
Current liabilities		12,553,716		2,221,726		10,331,990
Noncurrent liabilities		323,199		—		323,199
Joint ventures’ equity		51,306,156		29,291,562		22,014,594
NTIC’s share of joint ventures’ equity		25,397,287		14,645,783		10,751,504
NTIC’s share of joint ventures’ undistributed earnings		23,645,685		14,614,878		9,030,807

	Fiscal Year Ended August 31, 2024
	Total		EXCOR		OTHER
Net sales	$	95,940,014	$	35,720,889	$	60,219,125
Gross profit		41,247,036		18,288,258		22,958,778
Net income		8,450,411		4,599,088		3,851,323
NTIC’s share of equity in income of joint ventures		4,223,296		2,299,274		1,924,022
NTIC’s dividends received from joint ventures		2,997,164		1,624,950		1,372,214

	As of August 31, 2023
	Total		EXCOR		OTHER
Current assets	$	55,339,662	$	27,862,458	$	27,477,204
Total assets		59,729,348		30,054,277		29,675,071
Current liabilities		11,464,247		2,687,064		8,777,183
Noncurrent liabilities		323,762		—		323,762
Joint ventures’ equity		47,941,339		27,367,213		20,574,126
NTIC’s share of joint ventures’ equity		23,705,714		13,683,608		10,022,106
NTIC’s share of joint ventures’ undistributed earnings		20,493,861		12,075,524		8,418,337

	Fiscal Year Ended August 31, 2023
	Total		EXCOR		OTHER
Net sales	$	100,682,316	$	39,642,380	$	61,039,936
Gross profit		40,096,561		19,016,389		21,080,172
Net income		8,934,198		5,730,311		3,203,887
NTIC’s share of equity in income of joint ventures		6,452,719		2,852,229		3,600,490
NTIC’s dividends received from joint ventures		5,639,198		2,459,500		3,179,698

In August 2023, Tianjin Zerust (NTI ASEAN’s previously written-off joint venture in China) was deregistered and the remaining cash was cleared by the Chinese authorities to be paid out to shareholders. Subsequent to August 31, 2023, NTI Asean received a final liquidation of its ownership interest in the former joint venture of $1,986,027. This one-time equity gain on the liquidation of previously written-off investment in Tianjin Zerust is included in joint venture operations in fiscal 2023. The final liquidation payment was subject to withholding tax of $198,603 and minority income of $676,614 as NTIC owns 60% of NTI ASEAN. The transaction also resulted in legal fees of $95,890, and a management bonus expense of $250,000.

Note 8 - Stockholders' Equity - Cash Dividends Declared (Details) - $ / shares	12 Months Ended
	Aug. 31, 2024	Aug. 31, 2023
Amount, per share (in dollars per share)	$ 0.28	$ 0.28
O, 2024, Q1, Dividends [Member]
Declaration Date	Oct. 18, 2023
Amount, per share (in dollars per share)	$ 0.07
Record Date	Nov. 01, 2023
Payable Date	Nov. 15, 2023
Declaration Date	Oct. 18, 2023
O, 2023, Q1, Dividends [Member]
Declaration Date		Oct. 20, 2022
Amount, per share (in dollars per share)		$ 0.07
Record Date		Nov. 03, 2022
Payable Date		Nov. 16, 2022
Declaration Date		Oct. 20, 2022
O, 2023, Q2, Dividends [Member]
Declaration Date		Jan. 20, 2023
Amount, per share (in dollars per share)		$ 0.07
Record Date		Feb. 01, 2023
Payable Date		Feb. 15, 2023
Declaration Date		Jan. 20, 2023
O, 2024, Q2, Dividends [Member]
Declaration Date	Jan. 17, 2024
Amount, per share (in dollars per share)	$ 0.07
Record Date	Jan. 31, 2024
Payable Date	Feb. 14, 2024
Declaration Date	Jan. 17, 2024
O, 2023, Q3, Dividends [Member]
Declaration Date		Apr. 21, 2023
Amount, per share (in dollars per share)		$ 0.07
Record Date		May 03, 2023
Payable Date		May 17, 2023
Declaration Date		Apr. 21, 2023
O, 2023, Q4, Dividends [Member]
Declaration Date		Jul. 17, 2023
Amount, per share (in dollars per share)		$ 0.07
Record Date		Aug. 02, 2023
Payable Date		Aug. 16, 2023
Declaration Date		Jul. 17, 2023
O, 2024, Q3, Dividends [Member]
Declaration Date	Apr. 17, 2024
Amount, per share (in dollars per share)	$ 0.07
Record Date	May 01, 2024
Payable Date	May 15, 2024
Declaration Date	Apr. 17, 2024
O, 2024, Q4, Dividends [Member]
Declaration Date	Jul. 17, 2024
Amount, per share (in dollars per share)	$ 0.07
Record Date	Jul. 31, 2024
Payable Date	Aug. 14, 2024
Declaration Date	Jul. 17, 2024

Note 11 - Segment and Geographic Information - Net Sales by Segment (Details) - USD ($)	12 Months Ended
	Aug. 31, 2024	Aug. 31, 2023
Net sales	$ 85,059,517	$ 79,902,952
ZERUST [Member]
Net sales	63,092,575	61,728,364
NaturTec [Member]
Net sales	$ 21,966,942	$ 18,174,588

- Definition

+ References

+ Details

Significant Accounting Policies (Policies)

12 Months Ended

Aug. 31, 2024

Accounting Policies [Abstract]

Consolidation, Policy [Policy Text Block]

Principles of Consolidation – NTIC evaluates its voting and variable interests in entities on a qualitative and quantitative basis. NTIC consolidates entities in which it concludes it has the power to direct the activities that most significantly impact an entity’s economic success and has the obligation to absorb losses or the right to receive benefits that could be significant to the entity. The consolidated financial statements include the accounts of Northern Technologies International Corporation, its wholly owned subsidiaries, Northern Technologies Holding Company, LLC, NTIC (Shanghai) Co., Ltd. (NTIC China), ZERUST-EXCOR MEXICO, S. de R.L. de C.V (Zerust Mexico), NTIC Europe GmbH (NTI Europe), and HNTI Limited (Zerust India), NTIC’s majority-owned subsidiary in India, Natur-Tec India Private Limited (Natur-Tec India), NTIC’s majority-owned subsidiary in Brazil, Zerust Prevenção de Corrosão S.A. (Zerust Brazil), NTIC’s majority-owned subsidiary in Sri Lanka, Natur Tec Lanka (Pvt) Ltd (Natur Tec Lanka), and NTIC’s majority-owned holding company, NTI Asean LLC (NTI Asean), and its wholly owned subsidiaries Zerust Singapore Pte Ltd (Zerust Singapore), Zerust Vietnam Co. Ltd (Zerust Vietnam) and Zerust Taiwan Co. Ltd (Zerust Taiwan). NTIC’s consolidated financial statements do not include the accounts of any of its joint ventures.

Consolidation, Subsidiaries or Other Investments, Consolidated Entities, Policy [Policy Text Block]

Non-Controlling Interests – The Company owns 75% of Natur-Tec India, 75% of Natur Tec Lanka, 85% of Zerust Brazil, 60% of NTI Asean, Zerust Singapore Pte Ltd, Zerust Vietnam Co Ltd and Zerust Taiwan Co Ltd. The remaining ownership of the consolidated entities are accounted for as non-controlling interests and reported as part of equity in the consolidated financial statements. The Company allocates gains and losses to the non-controlling interest even when such allocation results in a deficit balance, reducing the losses attributed to the controlling interest. Changes in ownership interests are treated as equity transactions if the Company maintains control.

Revenue [Policy Text Block]

Net Sales – The Company includes net sales to its joint ventures and net sales to unaffiliated customers on its consolidated statements of operations. There are no sales originating from the Company’s joint ventures to unaffiliated customers included in the amount, as the Company’s investments in its joint ventures are accounted for using the equity method.

When determining recognition of revenue arrangements the Company performs the following five steps: (1) identify the contracts with a customer; (2) identify the performance obligations in the contract; (3) determine the transaction price; (4) allocate the transaction price to the performance obligations in the contract; and (5) recognize revenue when or as the entity satisfies a performance obligation. The Company only applies the five-step model to contracts when it is probable that the entity will collect the consideration it is entitled to in exchange for the goods it transfers to, or services it performs for, the customer.

Generally, the Company’s performance obligations are satisfied when the customers take possession of the products, which normally occurs at the shipping point or destination depending on the terms of the contracts. The Company’s services are generally sold based upon quotes or contracts with customers that include a fixed or determinable price, and sales arrangements do not contain any significant financing component for its customers. The Company does not recognize revenue related to product warranties, nor does the Company incur significant contract costs. Customer arrangements do not generate contract assets or liabilities.

Revenue Recognition – Revenue is measured based on consideration specified in the contract with a customer, adjusted for any applicable estimates of variable consideration and other factors affecting the transaction price, including noncash consideration, consideration paid or payable to customers, and significant financing components. Revenue from all customers is recognized when a performance obligation is satisfied by transferring control of a distinct good or service to a customer.

Individually promised goods and services in a contract are considered a distinct performance obligation and accounted for separately if the customer can benefit from the individual good or service on its own or with other resources that are readily available to the customer and the good or service is separately identifiable from other promises in the arrangement. When an arrangement includes multiple performance obligations, the consideration is allocated between the performance obligations in proportion to their estimated standalone selling price. Costs related to products delivered are recognized in the period incurred, unless criteria for capitalization of costs are met. Costs of revenues consist primarily of direct labor, manufacturing overhead, materials, and components. The Company does not incur significant upfront costs to obtain a contract. If costs to obtain a contract were to become material, the costs would be recorded as an asset and amortized to expense in a manner consistent with the related recognition of revenue.

The Company excludes government assessed and imposed taxes on revenue generating transactions that are invoiced to customers from revenue. The Company includes freight billed to customers in revenue. Shipping and handling costs associated with outbound freight after control over a product has transferred to a customer are accounted for as a fulfillment cost and are included in cost of goods sold.

The timing of revenue recognition, billing, and cash collections results in accounts receivable on the consolidated balance sheet.

Performance Obligations – A performance obligation is a promise in a contract to transfer a distinct good or service to the customer. A contract’s transaction price is allocated to each distinct performance obligation in proportion to its standalone selling price and recognized as revenue when, or as, the performance obligation is satisfied. The Company’s various performance obligations and the timing or method of revenue recognition are discussed below. The Company’s technical service consultants work directly with the end users of NTIC’s ZERUST® rust and corrosion inhibiting products to analyze their specific needs and develop systems to meet their performance requirements.

The Company sells its products to both distributors and end-users. Each unit of product delivered under a customer order represents a distinct and separate performance obligation, as the customer can benefit from each unit on its own or with other resources that are readily available to the customer, and each unit of product is separately identifiable from other products in the arrangement.

The transaction price for the Company’s products is the invoiced amount. The Company does not have variable consideration in the form of refunds, credits, rebates, price concessions, pricing incentives, or other items impacting transaction price. The purchase order pricing in arrangements with customers is deemed to approximate standalone selling price; therefore, the Company does not need to allocate proceeds on a relative standalone selling price allocation between performance obligations. The Company applies the practical expedient in paragraph 606-10-50-14 and does not disclose information about remaining performance obligations that have original expected durations of one year or less. There are no material obligations that extend beyond one year.

Revenue is recognized when transfer of control occurs, as defined by the terms in the customer agreement. The Company immediately recognizes incidental items that are immaterial in the context of the contract. The Company has applied the practical expedient in paragraph 606-10-25-16A and does not assess if immaterial items are promised goods or services. The Company has also applied the practical expedient in paragraph 606-10-32-18 regarding the adjustment of the promised amount of consideration for the effects of a significant financing component when the customer pays for that good or service within one year or less, as the Company does not have any significant financing components in its customer arrangements since payment is received at or shortly after the point of sale, generally 30 to 90 days.

The Company estimates returns based on an analysis of historical experience if the right to return products is granted to its customers. The Company does not record a return asset, as non-conforming products are generally not returned. The Company’s return policy does not vary by geography. The customer has no rotation or price protection rights, and the Company is not under a warranty obligation.

Sales Commissions – Sales commissions paid to sales representatives are eligible for capitalization, as they are incremental costs that would not have been incurred without entering into a specific sales arrangement and are recoverable through the expected margin on the transaction. The Company has elected to apply the practical expedient provided by ASC 340-40-25-4 and recognize the incremental costs of obtaining contracts as an expense when incurred, as the amortization period of the assets that would have otherwise been recognized is one year or less. The Company records these costs as a selling expense.

Product Warranty – The Company offers warranties on various products and services. These warranties are assurance type warranties that are not sold on a standalone basis; therefore, they are not considered distinct performance obligations. The Company estimates the costs that may be incurred under its warranties and records a liability in the amount of such costs at the time the revenue is recognized for the product sale.

International Revenue – The Company markets its products to numerous countries in North America, Europe, Latin America, Asia, and other parts of the world. See Note 11, Segment and Geographic Information, for information regarding revenue disaggregation by geography.

Receivable [Policy Text Block]

Trade Receivables – Payment terms for the Company’s unaffiliated customers are determined based on credit risk and vary by customer. The Company typically offers standard payment terms to unaffiliated customers of net 30 days. The Company does not accrue interest on past due accounts receivable. The Company reviews the credit histories of its customers before extending unsecured credit. The Company presents accounts receivable, net of an allowance for credit losses. The allowance for credit losses reflects management’s estimate of amounts that will ultimately not be collected. The Company determines the allowance for credit losses based on historical information, changes in current economic conditions and reasonable and supportable forecasts of future economic conditions. The allowance for credit losses is measured on a collective (pool) basis when trade receivables share similar risk characteristics. Trade receivables that do share similar risk characteristics are evaluated on an individual basis and are also not included in the collective (pool) evaluation.

Trade Receivables from Joint Ventures – Trade receivables from joint ventures arise from sales of products the Company makes to its joint ventures. Payment terms for the Company’s joint ventures also are determined based on credit risk; however, additional consideration is given to the individual joint venture due to the transportation time associated with ocean delivery of most products and certain other factors. Generally, accounts receivable from the Company’s joint ventures unpaid after 90 days are considered past due. The Company does not accrue interest on past due balances. The Company periodically reviews amounts due from its joint ventures for collectability and, based on past experience and continuous review of the balances due, determined that an allowance for credit losses related to its joint venture receivables was not necessary as of August 31, 2024 or 2023.

Employee Retention Credit [Policy Text Block]

Employee Retention Credit (ERC) and Payroll Tax Deferral - On March 27, 2020, the Coronavirus Aid, Relief, and Economic Security Act (“CARES Act”) was signed into law providing numerous tax provisions and other stimulus measures, including an employee retention credit (“ERC”), which is a refundable tax credit against certain employment taxes. The Taxpayer Certainty and Disaster Tax Relief Act of 2020 and the American Rescue Plan Act of 2021 extended and expanded the availability of the ERC.

The Company engaged tax advisors of a Big 4 accounting firm which determined the Company qualified for ERCs. The Company then applied for the ERC in fiscal 2023 for the second and third quarters of that year of $573,751 and $566,006, respectively. The Company has elected to account for the credit as a government grant. U.S. GAAP does not include grant accounting guidance for for-profit entities; therefore, the Company has elected to follow the grant accounting model in International Accounting Standard (IAS) 20, Accounting for Government Grants and Disclosure of Government Assistance. In accordance with IAS 20, the Company cannot recognize any income from the grant until there is reasonable assurance (similar to the “probable” threshold in U.S. GAAP) that any conditions attached to the grant will be met and that the grant will be received. Once it is reasonably assured that the grant conditions will be met and that the grant will be received, grant income is recorded on a systematic basis over the periods in which the Company recognizes the payroll expenses for which the grant is intended to compensate. No income was recognized in fiscal 2024 for the ERC. Income from the grant can be presented as either other income or as a reduction in the expenses for which the grant was intended to compensate.

Receivables from Joint Ventures Policy [Policy Text Block ]

Fees for Services Provided to Joint Ventures – The Company provides services to its joint ventures including consulting, legal, travel, insurance, technical, and marketing services based on licensing or other agreements with its joint ventures. The Company receives fees for the services it provides to its joint ventures. The fees for services received by the Company from its joint ventures are generally based on either a flat fee or a percentage of net sales by the Company’s joint ventures depending on local laws and tax regulations. Under the Company’s agreements with its joint ventures, amounts are earned when product is shipped from joint venture facilities, at which point a sale is deemed to have occurred and results in obligation for the joint venture to pay the royalty and recognition of the fee by the Company. The Company reviews the financial situation of each of its joint ventures to assist in the likelihood of collections on amounts earned. The Company accounts for these fees on a cash basis if uncertainty exists surrounding the collection of such fees.

Cash and Cash Equivalents, Policy [Policy Text Block]

Cash and Cash Equivalents – The Company includes as cash and cash equivalents highly liquid, short-term investments with maturity of three months or less when purchased, which are readily convertible into known amounts of cash. The Company maintains its cash in high quality financial institutions. The balances, at times, may exceed federally insured limits.

Inventory, Policy [Policy Text Block]

Inventories – Inventories are recorded at the lower of cost (first-in, first-out basis) or net realizable value and include a reduction in value based on slow-moving and obsolete inventory, which amounted to $365,341 and $733,965 in the fiscal years ending August 31, 2024 and 2023, respectively.

Property, Plant and Equipment, Policy [Policy Text Block]

Property and Equipment and Depreciation – Property and equipment are stated at cost. Depreciation is computed using the straight-line method based on the estimated service lives of the various assets as follows:

Buildings and improvements	5-30 years
Machinery and equipment	3-10 years

Equity Method Investments [Policy Text Block]

Investments in Joint Ventures – Investments in the Company’s joint ventures are accounted for using the equity method. Under the equity method, investments are initially recorded at cost and are adjusted for dividends, distributed and undistributed earnings and losses, changes in foreign currency exchange rates, and additional investments. In the event the Company’s share of a joint venture’s cumulative losses exceeds the Company’s investment balance, the balance is reported at zero value until proportionate income exceeds the losses. The Company assesses its joint ventures for impairment on an annual basis as of August 31 of each year as part of its fiscal year end analysis. In addition to the annual review for impairment, the Company reviews the operating results of each joint venture on a quarterly basis in comparison to its historical operating results and its accrual of fees for services provided to joint ventures. If the operating results of a joint venture do not meet financial performance expectations, an additional evaluation is performed on the joint venture. The Company’s evaluation of its investments in joint ventures requires the Company to make assumptions about future cash flows of its joint ventures. These assumptions require significant judgment, and actual results may differ from assumed or estimated amounts. All investments in joint ventures had positive equity as of August 31, 2024 and 2023. The Company considers any of its joint ventures to be significant and discloses entity specific financial information if the joint venture’s income or assets make up more than 20% of the Company’s total assets or income.

The Company classifies distributions received from its joint ventures based on the nature of the distributions, generally, in operating activities on the consolidated statements of cash flows.

If the Company is no longer able to exercise significant influence over operating and financial policy of a joint venture previously accounted for under the equity method, it maintains the investment at the carrying value as of the date that significant influence no longer exists and discontinues accruing the proportionate earnings or losses of the investment.

Investments are considered to be impaired when a decline in fair value is judged to be other-than-temporary. Fair value is calculated based on publicly available market information or other estimates determined by management. The Company employs a systematic methodology on a quarterly basis that considers available quantitative and qualitative evidence in evaluating potential impairment of our investments. If the cost of an investment exceeds its fair value, the Company evaluates, among other factors, general market conditions, credit quality, the duration and extent to which the fair value is less than cost, and for equity securities, the Company’s intent and ability to hold, or plans to sell, the investment. The Company also considers specific adverse conditions related to the financial health of and business outlook for the investee, including industry and sector performance, changes in technology, and operational and financing cash flow factors. Once a decline in fair value is determined to be other-than-temporary, an impairment charge is recorded to other income (expense), and a new cost basis in the investment is established. The Company determined that there was no impairment of investments in joint ventures as of August 31, 2024.

Impairment or Disposal of Long-Lived Assets, Policy [Policy Text Block]

Recoverability of Long-Lived Assets – The Company reviews its long-lived assets whenever events or changes in circumstances indicate the carrying amount of the assets may not be recoverable. The Company determines potential impairment by comparing the carrying value of the assets with expected net cash flows expected to be provided by operating activities of the business or related products. If the sum of the expected undiscounted future net cash flows is less than the carrying value, the Company evaluates whether an impairment loss should be recognized. An impairment loss is measured by comparing the amount by which the carrying value exceeds the fair value of the asset. When evaluating assets for impairment, the Company groups long-lived assets with other assets and liabilities at the lowest level for which identifiable cash flows are largely independent of the cash flows of other assets and liabilities. The Company determined that there were no indications that the carrying value of long-lived assets was not recoverable as of August 31, 2024.

Business Combinations Policy [Policy Text Block]

Acquisitions of Businesses - Business combinations are accounted for under the acquisition method. Identifiable assets acquired and liabilities and contingent liabilities assumed in a business combination are measured initially at their fair values at the acquisition date. Determining the fair value of assets acquired and liabilities and contingent liabilities assumed requires management’s judgment and often involves the use of significant estimates and assumptions, including assumptions with respect to future cash inflows and outflows, probabilities of success, discount rates, and asset lives, among other items. The excess of the fair value of the consideration transferred over the fair value of the Company’s share of the identifiable net assets acquired is recorded as goodwill. Acquisition-related expenses are recognized separately from the business combination and are recognized as general and administrative expense as incurred. The Company evaluates the materiality of required disclosures related to our business combinations using quantitative and qualitative measures.

Intangible Assets, Finite-Lived, Policy [Policy Text Block]

Patents and Trademarks – Patents and trademarks, including acquisition costs, are stated at cost, less accumulated amortization. Amortization is computed using the straight-line method over the estimated useful lives of the respective assets. Upon retirement, the cost of assets disposed and the related accumulated amortization are removed from the accounts, and any resulting gain or loss is credited or charged to operations.

The Company estimates the useful life of patents to be 17 years and customer relationships to be 15 years. This estimate is based on a combination of factors, including the expected duration of patent protection, technological obsolescence, and market conditions. Amortization of intangible assets is recorded using the straight-line method over their estimated useful lives.

Goodwill and Intangible Assets, Goodwill, Policy [Policy Text Block]

Goodwill - Goodwill represents the excess purchase price over the fair value of tangible net assets acquired in acquisitions after amounts have been allocated to intangible assets. Goodwill is tested for impairment annually (at August 31), or more frequently when events or changes in circumstances indicate that the asset might be impaired. Examples of such events or circumstances include, but are not limited to, a significant adverse change in legal or business climate, an adverse regulatory action or unanticipated competition.

The Company assesses qualitative factors to determine whether the existence of events or circumstances would indicate that it is more likely than not that the fair value of the reporting unit is less than its carrying amount. If after assessing the totality of events or circumstances, the Company were to determine that it is more likely than not that the fair value of the reporting unit is less than its carrying amount, then the Company would perform a quantitative test that compares the fair value to its carrying value to determine the amount of any impairment. The Company has determined there was no goodwill impairment during the years ended August 31, 2024 and 2023.

Income Tax, Policy [Policy Text Block]

Income Taxes – The Company utilizes the asset and liability method of accounting for income taxes, which requires the recognition of deferred tax assets and liabilities for the expected future tax consequences of events that have been included in the consolidated financial statements. Deferred income tax assets and liabilities are determined based on the differences between the financial statement and tax basis of assets and liabilities using enacted tax rates in effect for the year in which the differences are expected to reverse. The effect of a change in tax rates on deferred tax assets and liabilities is recognized in operations in the period that includes the enactment date.

The Company records net deferred tax assets to the extent the Company believes these assets will more likely than not be realized. In making such a determination, the Company considers all available positive and negative evidence, including future reversals of existing taxable temporary differences, projected future taxable income, tax-planning strategies, and results of recent operations. In the event the Company determines that it would be able to realize its deferred assets in the future in excess of their net recorded amount, the Company makes an adjustment to the deferred tax asset valuation allowance, which would reduce the provision for income taxes.

The Company records uncertain tax positions on the basis of a two-step process whereby the Company determines whether it is more likely than not that the tax positions will be sustained based on the technical merits of the position and those tax positions that meet the more-likely-than-not recognition threshold. The Company recognizes the largest amount of tax benefit that is greater than 50 percent likely to be realized upon ultimate settlement with the related tax authority.

Foreign Currency Transactions and Translations Policy [Policy Text Block]

Foreign Currency Translation (Accumulated Other Comprehensive Income (Loss)) – The functional currency of NTIC China, Zerust Brazil, Natur-Tec India, Natur Tec Lanka, Zerust Mexico, Zerust India, Zerust Singapore, Zerust Vietnam, Zerust Taiwan, NTI Europe, and each unconsolidated international joint venture is the applicable local currency. The translation of the applicable foreign currencies into U.S. dollars is performed for balance sheet accounts using exchange rates in effect at the balance sheet date and for revenue and expense accounts using an average monthly exchange rate. Translation gains or losses are reported as an element of other comprehensive income (loss).

The Company (excluding NTIC China, Zerust Brazil, Natur-Tec India, Natur Tec Lanka, Zerust India, Zerust Singapore, Zerust Vietnam, Zerust Taiwan, NTI Asean, Zerust Mexico, NTI Europe, and NTIC’s joint ventures) conducts all foreign transactions based on the U.S. dollar. Since investments in joint ventures are accounted for using the equity method, any changes in foreign currency exchange rates are reflected as a foreign currency translation adjustment and do not change the equity in income from joint ventures reflected in the Company’s consolidated statements of operations.

Fair Value of Financial Instruments, Policy [Policy Text Block]

Fair Value of Financial Instruments – The carrying value of cash and cash equivalents, short-term accounts receivable, notes payable, trade accounts payables, and other accrued expenses approximate fair value because of the short maturity of those instruments.

Shipping and Handling Cost, Policy [Policy Text Block]

Shipping and Handling – The Company records all amounts billed to customers in a sales transaction related to shipping and handling as sales. The Company records costs related to shipping and handling in cost of goods sold.

Research, Development, and Computer Software, Policy [Policy Text Block]

Research and Development – The Company expenses all costs related to product research and development as incurred.

Stockholders' Equity, Policy [Policy Text Block]

Common Stock – The Company issues authorized but unissued shares of common stock upon the exercise of stock options.

Share-Based Payment Arrangement [Policy Text Block]

Stock-Based Compensation – The Company recognizes compensation cost relating to share-based payment transactions, including grants of employee stock options and transactions under the Company’s employee stock purchase plan, in its consolidated financial statements. That cost is measured based on the fair value of the equity or liability instruments issued. The Company measures the cost of employee services received in exchange for stock options and other stock-based awards based on the grant-date fair value of the award and recognizes the cost over the period the employee is required to provide services for the award (generally the vesting term).

Subsequent Events, Policy [Policy Text Block]

Subsequent Events – The Company has evaluated events occurring after the date of the consolidated financial statements through November 19, 2024 for events requiring disclosure in the consolidated financial statements.

Use of Estimates, Policy [Policy Text Block]

Use of Estimates – The preparation of the consolidated financial statements in conformity with accounting principles generally accepted in the United States of America requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities and disclosure of contingent assets and liabilities at the date of the consolidated financial statements and the reported amounts of revenues and expenses during the reporting period. Actual results could differ from those estimates.

Note 1 - Nature of Business and Significant Accounting Policies (Details Textual)	3 Months Ended		12 Months Ended
	May 31, 2023 USD ($)	Feb. 28, 2023 USD ($)	Aug. 31, 2024 USD ($)	Aug. 31, 2023 USD ($)
Number of Countries in which Entity Operates			65
Number of Operating Segments			2
Number of Joint Venture Arrangements			15
Inventory Valuation Reserves			$ 365,341	$ 733,965
Goodwill, Impairment Loss			$ 0	$ 0
Patents [Member]
Finite-Lived Intangible Asset, Useful Life			17 years
Customer Relationships [Member]
Finite-Lived Intangible Asset, Useful Life			15 years
Employee Retention Credits [Member]
Tax Credit Carryforward, Amount Subject to Approval	$ 566,006	$ 573,751
Tax Credit Carryforward, Amount			$ 0
Natur-Tech India [Member]
Subsidiary, Ownership Percentage, Parent			75.00%
Natur Tec Lanka [Member]
Subsidiary, Ownership Percentage, Parent			75.00%
Zerust Brazil [Member]
Subsidiary, Ownership Percentage, Parent			85.00%
NTI Asean LLC [Member]
Subsidiary, Ownership Percentage, Parent			60.00%
Maximum [Member] \| Various Joint Ventures [Member]
Subsidiary, Ownership Percentage, Parent			50.00%

Note 1 - Nature of Business and Significant Accounting Policies - Property and Equipment Useful Life (Details)	Aug. 31, 2024
Building and Building Improvements [Member] \| Minimum [Member]
Property, Plant and Equipment, Useful Life	5 years
Building and Building Improvements [Member] \| Maximum [Member]
Property, Plant and Equipment, Useful Life	30 years
Machinery and Equipment [Member] \| Minimum [Member]
Property, Plant and Equipment, Useful Life	3 years
Machinery and Equipment [Member] \| Maximum [Member]
Property, Plant and Equipment, Useful Life	10 years

Note 1 - Nature of Business and Significant Accounting Policies

12 Months Ended

Aug. 31, 2024

Notes to Financial Statements

Organization, Consolidation and Presentation of Financial Statements Disclosure [Text Block]

1.	NATURE OF BUSINESS AND SIGNIFICANT ACCOUNTING POLICIES

Nature of Business – Northern Technologies International Corporation and its Subsidiaries (collectively, the Company) develop and market proprietary environmentally beneficial products and services in over 65 countries either directly or via a network of subsidiaries, joint ventures, independent distributors, and agents. The Company’s primary business is corrosion prevention marketed mainly under the ZERUST® brand. The Company has been selling its proprietary ZERUST® products and services to the automotive, electronics, electrical, mechanical, military, and retail consumer markets for over 50 years and, more recently, has also expanded into the oil and gas industry. Additionally, the Company markets and sells a portfolio of proprietary bio-based and certified compostable (fully biodegradable) polymer resin compounds and finished products under the Natur-Tec® brand. These sustainable packaging products are intended to reduce the Company’s customers’ carbon footprint and provide environmentally sound waste disposal options. The Company’s two operating and reportable segments are ZERUST® and Natur-Tec®.

The Company participates, either directly or indirectly, in 15 active joint venture arrangements in North America, Europe, and Asia. Each of these joint ventures generally manufactures and markets products in the geographic territory to which it is assigned. While most of the Company’s joint ventures exclusively sell rust and corrosion inhibiting products, some of the joint ventures also sell the Company’s Natur-Tec® resin compounds and finished products. The profits of joint ventures are shared by the respective joint venture owners in accordance with their respective ownership percentages. The Company typically owns 50% or less of its joint venture entities and does not control the decisions of these entities, including dividend declaration or amount in any given year.

The timing of revenue recognition, billing, and cash collections results in accounts receivable on the consolidated balance sheet.

Buildings and improvements	5-30 years
Machinery and equipment	3-10 years

The Company classifies distributions received from its joint ventures based on the nature of the distributions, generally, in operating activities on the consolidated statements of cash flows.

Research and Development – The Company expenses all costs related to product research and development as incurred.

Common Stock – The Company issues authorized but unissued shares of common stock upon the exercise of stock options.

Note 15 - Commitments and Contingencies - Present Value of Long-term Leases (Details) - USD ($)	Aug. 31, 2024	Aug. 31, 2023
Right-of-use assets, net	$ 424,558	$ 428,874
Current portion of lease liability	325,116	340,799
Lease liability, less current portion	99,442	88,075
Total lease liability	$ 424,558	$ 428,874

Note 11 - Segment and Geographic Information - Total Long-lived Assets by Geographic Distribution (Details) - USD ($)	Aug. 31, 2024	Aug. 31, 2023
Total property and equipment	$ 16,265,653	$ 14,065,354
CHINA
Total property and equipment	5,627,202	5,729,080
Other Countries [Member]
Total property and equipment	1,217,400	745,469
UNITED STATES
Total property and equipment	$ 9,421,051	$ 7,590,805

Note 17 - Subsequent Events (Details Textual) - $ / shares		12 Months Ended
	Oct. 16, 2024	Aug. 31, 2024	Aug. 31, 2023
CASH DIVIDENDS DECLARED PER COMMON SHARE (in dollars per share)		$ 0.28	$ 0.28
Subsequent Event [Member]
CASH DIVIDENDS DECLARED PER COMMON SHARE (in dollars per share)	$ 0.07
Subsequent Event [Member] \| O, 2025, Q1, Dividends [Member]
Dividends Payable, Date to be Paid	Nov. 13, 2024
Dividends Payable, Date of Record	Oct. 30, 2024

Note 14 - Income Taxes - Deferred Tax Asset (Liabilities) (Details) - USD ($)	Aug. 31, 2024	Aug. 31, 2023
Stock-based compensation	$ 637,100	$ 556,700
Foreign tax credit carryforward	3,844,800	4,036,000
Capitalized research and experimentation	2,037,800	1,106,000
Other credit and loss carryforward	5,974,200	6,034,000
Other	965,368	1,048,800
Total deferred tax assets	13,459,268	12,781,500
Valuation allowance	(12,694,800)	(11,933,700)
Total deferred tax assets after valuation allowance	764,468	847,800
Right-of-use asset	(64,700)	(66,200)
Intangible assets	(1,564,200)	(1,670,700)
Unremitted foreign earnings	(34,800)	(214,800)
Other	(61,100)	(201,215)
Total deferred tax liabilities	(1,724,800)	(2,152,915)
Net deferred tax liabilities	$ (960,332)	$ (1,305,115)

Insider Trading Arrangements

12 Months Ended

Aug. 31, 2024

Insider Trading Arr Line Items

Material Terms of Trading Arrangement [Text Block]

Item 9B.

OTHER INFORMATION

Adoption of Third Amended and Restated Bylaws

On November 14, 2024, NTIC’s Board of Directors approved and adopted Third Amended and Restated Bylaws (the “Amended and Restated Bylaws”) incorporating certain amendments, including amendments in response to recent developments in Delaware law. The Amended and Restated Bylaws became effective immediately upon their approval and adoption by the Board of Directors. The amendments reflected in the Amended and Restated Bylaws include, among other changes: (i) limiting certain disclosure requirements to bring forth a stockholder proposal or director nomination to the stockholder giving notice, any beneficial owners of such stockholder and stockholders who are known to financially support such stockholder proposal or director nomination; and (ii) incorporating other non-substantive, conforming changes.

The foregoing summary of the Amended and Restated Bylaws is qualified in its entirety by reference to the complete text of the Amended and Restated Bylaws, as approved, adopted, and effective on November 14, 2024, which is filed as Exhibit 3.2 to this annual report on Form 10-K and incorporated by reference herein.

Rule 10b5-1 Plan and Non-Rule 10b5-1 Trading Arrangement Adoptions, Terminations, and Modifications

During the three months ended August 31, 2024, none of our directors or “officers” (as defined in Rule 16a-1(f) under the Exchange Act) adopted or terminated a “Rule 10b5-1 trading arrangement” or “non-Rule 10b5-1 trading arrangement,” as each term is defined in Item 408 of SEC Regulation S-K.

Rule 10b5-1 Arrangement Adopted [Flag]

false

Non-Rule 10b5-1 Arrangement Adopted [Flag]

false

Rule 10b5-1 Arrangement Terminated [Flag]

false

Non-Rule 10b5-1 Arrangement Terminated [Flag]

false

Note 15 - Commitments and Contingencies - Future Minimum Rents Due (Details) - USD ($)	Aug. 31, 2024	Aug. 31, 2023
Fiscal 2025	$ 325,116
Fiscal 2026	103,944
Fiscal 2027	21,596
Thereafter	0
Total future minimum lease payments	450,656
Less amount representing interest	(26,098)
Long-term operating lease obligations	424,558	$ 428,874
Less current portion	(325,116)	(340,799)
Long-term operating lease obligations	$ 99,442	$ 88,075

Note 12 - Retirement Plan

12 Months Ended

Aug. 31, 2024

Notes to Financial Statements

Retirement Benefits [Text Block]

12.

RETIREMENT PLAN

The Company has a 401(k) employee savings plan. Employees who meet certain age and service requirements may elect to contribute up to 15% of their salaries. The Company typically contributes the lesser of 50% of the participant’s contributions or 3.5% of the employee’s salary. The Company recognized expense for the savings plan of $332,726 and $289,235 for fiscal 2024 and fiscal 2023, respectively.

- Definition

The entire disclosure for retirement benefits.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 715
-SubTopic 70
-Name Accounting Standards Codification
-Section 50
-Paragraph 1
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480794/715-70-50-1

Reference 2: http://www.xbrl.org/2003/role/exampleRef
-Topic 715
-SubTopic 20
-Name Accounting Standards Codification
-Section 55
-Paragraph 17
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480482/715-20-55-17

Reference 3: http://www.xbrl.org/2003/role/disclosureRef
-Topic 715
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 1
-Subparagraph (d)(iv)(03)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480506/715-20-50-1

Reference 4: http://www.xbrl.org/2003/role/disclosureRef
-Topic 715
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 1
-Subparagraph (d)(i)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480506/715-20-50-1

Reference 5: http://www.xbrl.org/2003/role/disclosureRef
-Topic 715
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 1
-Subparagraph (q)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480506/715-20-50-1

Reference 6: http://www.xbrl.org/2003/role/disclosureRef
-Topic 715
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 1
-Subparagraph (l)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480506/715-20-50-1

Reference 7: http://www.xbrl.org/2003/role/disclosureRef
-Topic 715
-Name Accounting Standards Codification
-Publisher FASB
-URI https://asc.fasb.org/715/tableOfContent

Reference 8: http://www.xbrl.org/2003/role/disclosureRef
-Topic 715
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 1
-Subparagraph (d)(iii)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480506/715-20-50-1

Reference 9: http://www.xbrl.org/2003/role/disclosureRef
-Topic 715
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 1
-Subparagraph (o)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480506/715-20-50-1

Reference 10: http://www.xbrl.org/2003/role/disclosureRef
-Topic 715
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 1
-Subparagraph (p)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480506/715-20-50-1

Reference 11: http://www.xbrl.org/2003/role/disclosureRef
-Topic 715
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 1
-Subparagraph (r)(1)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480506/715-20-50-1

Reference 12: http://www.xbrl.org/2003/role/disclosureRef
-Topic 715
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 1
-Subparagraph (r)(2)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480506/715-20-50-1

Reference 13: http://www.xbrl.org/2003/role/disclosureRef
-Topic 715
-SubTopic 20
-Name Accounting Standards Codification
-Section S99
-Paragraph 2
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480126/715-20-S99-2

Reference 14: http://www.xbrl.org/2003/role/disclosureRef
-Topic 715
-SubTopic 60
-Name Accounting Standards Codification
-Section 50
-Paragraph 3
-Subparagraph (c)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480266/715-60-50-3

+ Details

Note 4 - Property and Equipment, Net (Tables)

12 Months Ended

Aug. 31, 2024

Notes Tables

Property, Plant and Equipment [Table Text Block]

	August 31, 2024			August 31, 2023
Land	$	1,238,180		$	496,965
Buildings and improvements		14,760,250			16,433,827
Construction in process		3,086,479			816,565
Machinery and equipment		7,276,151			5,984,364
		26,361,060			23,731,721
Less accumulated depreciation		(10,095,407	)		(9,666,367	)
	$	16,265,653		$	14,065,354

Consolidated Statements of Comprehensive Income - USD ($)	12 Months Ended
	Aug. 31, 2024	Aug. 31, 2023
NET INCOME	$ 6,321,384	$ 4,237,731
OTHER COMPREHENSIVE INCOME – FOREIGN	422,859	445,338
COMPREHENSIVE INCOME	6,744,243	4,683,069
LESS: COMPREHENSIVE INCOME ATTRIBUTABLE TO NON-CONTROLLING INTERESTS	(893,882)	(1,349,064)
COMPREHENSIVE INCOME ATTRIBUTABLE TO NTIC	$ 5,850,361	$ 3,334,005

- Definition

Amount after tax of increase (decrease) in equity from transactions and other events and circumstances from net income and other comprehensive income, attributable to parent entity. Excludes changes in equity resulting from investments by owners and distributions to owners.

+ References + Details

- Definition

Amount after tax of increase (decrease) in equity from transactions and other events and circumstances from net income (loss) and other comprehensive income (loss), attributable to noncontrolling interests. Excludes changes in equity resulting from investments by owners and distributions to owners.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Name Accounting Standards Codification
-Section 45
-Paragraph 20
-SubTopic 10
-Topic 810
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147481231/810-10-45-20

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Topic 220
-SubTopic 10
-Name Accounting Standards Codification
-Section S99
-Paragraph 2
-Subparagraph (SX 210.5-03(23))
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147483621/220-10-S99-2

Reference 3: http://www.xbrl.org/2003/role/disclosureRef
-Topic 942
-SubTopic 220
-Name Accounting Standards Codification
-Section S99
-Paragraph 1
-Subparagraph (SX 210.9-04(25))
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147478524/942-220-S99-1

Reference 4: http://www.xbrl.org/2003/role/disclosureRef
-Topic 944
-SubTopic 220
-Name Accounting Standards Codification
-Section S99
-Paragraph 1
-Subparagraph (SX 210.7-04(21))
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147477250/944-220-S99-1

Reference 5: http://fasb.org/us-gaap/role/ref/legacyRef
-Name Accounting Standards Codification
-Topic 810
-SubTopic 10
-Section 45
-Paragraph 21
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147481231/810-10-45-21

Reference 6: http://www.xbrl.org/2003/role/disclosureRef
-Topic 220
-SubTopic 10
-Name Accounting Standards Codification
-Section 45
-Paragraph 1A
-Subparagraph (c)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482790/220-10-45-1A

Reference 7: http://www.xbrl.org/2003/role/disclosureRef
-Topic 220
-SubTopic 10
-Name Accounting Standards Codification
-Section 45
-Paragraph 1B
-Subparagraph (b)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482790/220-10-45-1B

Reference 8: http://www.xbrl.org/2003/role/disclosureRef
-Topic 944
-SubTopic 220
-Name Accounting Standards Codification
-Section S99
-Paragraph 1
-Subparagraph (SX 210.7-04(20))
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147477250/944-220-S99-1

Reference 9: http://fasb.org/us-gaap/role/ref/legacyRef
-Name Accounting Standards Codification
-Topic 810
-SubTopic 10
-Section 55
-Paragraph 4K
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147481175/810-10-55-4K

+ Details

- Definition

Amount after tax of increase (decrease) in equity from transactions and other events and circumstances from net income and other comprehensive income. Excludes changes in equity resulting from investments by owners and distributions to owners.

+ References + Details

- Definition

The consolidated profit or loss for the period, net of income taxes, including the portion attributable to the noncontrolling interest.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 250
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 6
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147483443/250-10-50-6

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Topic 250
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 9
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147483443/250-10-50-9

Reference 3: http://www.xbrl.org/2003/role/disclosureRef
-Topic 805
-SubTopic 60
-Name Accounting Standards Codification
-Section 65
-Paragraph 1
-Subparagraph (g)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147476176/805-60-65-1

Reference 4: http://www.xbrl.org/2003/role/disclosureRef
-Topic 740
-SubTopic 323
-Name Accounting Standards Codification
-Section 65
-Paragraph 2
-Subparagraph (g)(3)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147478666/740-323-65-2

Reference 5: http://www.xbrl.org/2003/role/disclosureRef
-Topic 235
-SubTopic 10
-Name Accounting Standards Codification
-Section S99
-Paragraph 1
-Subparagraph (SX 210.4-08(g)(1)(ii))
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480678/235-10-S99-1

Reference 6: http://www.xbrl.org/2003/role/disclosureRef
-Topic 323
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 3
-Subparagraph (c)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147481687/323-10-50-3

Reference 7: http://www.xbrl.org/2003/role/disclosureRef
-Topic 825
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 28
-Subparagraph (f)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482907/825-10-50-28

Reference 8: http://www.xbrl.org/2003/role/disclosureRef
-Topic 250
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 1
-Subparagraph (b)(2)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147483443/250-10-50-1

Reference 9: http://www.xbrl.org/2003/role/disclosureRef
-Topic 815
-SubTopic 40
-Name Accounting Standards Codification
-Section 65
-Paragraph 1
-Subparagraph (f)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480175/815-40-65-1

Reference 10: http://www.xbrl.org/2003/role/disclosureRef
-Topic 250
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 8
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147483443/250-10-50-8

Reference 11: http://www.xbrl.org/2003/role/exampleRef
-Topic 946
-SubTopic 830
-Name Accounting Standards Codification
-Section 55
-Paragraph 11
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147479168/946-830-55-11

Reference 12: http://www.xbrl.org/2003/role/disclosureRef
-Topic 946
-SubTopic 205
-Name Accounting Standards Codification
-Section 45
-Paragraph 3
-Subparagraph (a)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147478009/946-205-45-3

Reference 13: http://www.xbrl.org/2003/role/disclosureRef
-Topic 946
-SubTopic 220
-Name Accounting Standards Codification
-Section 45
-Paragraph 7
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147479105/946-220-45-7

Reference 14: http://www.xbrl.org/2003/role/disclosureRef
-Topic 944
-SubTopic 220
-Name Accounting Standards Codification
-Section S99
-Paragraph 1
-Subparagraph (SX 210.7-04(16))
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147477250/944-220-S99-1

Reference 15: http://www.xbrl.org/2003/role/disclosureRef
-Topic 946
-SubTopic 220
-Name Accounting Standards Codification
-Section S99
-Paragraph 1
-Subparagraph (SX 210.6-07(9))
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147479134/946-220-S99-1

Reference 16: http://www.xbrl.org/2003/role/disclosureRef
-Topic 946
-SubTopic 220
-Name Accounting Standards Codification
-Section S99
-Paragraph 3
-Subparagraph (SX 210.6-09(1)(d))
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147479134/946-220-S99-3

Reference 17: http://www.xbrl.org/2003/role/disclosureRef
-Topic 810
-SubTopic 10
-Name Accounting Standards Codification
-Section 45
-Paragraph 19
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147481231/810-10-45-19

Reference 18: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 220
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 6
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482765/220-10-50-6

Reference 19: http://www.xbrl.org/2003/role/disclosureRef
-Topic 470
-SubTopic 10
-Name Accounting Standards Codification
-Section S99
-Paragraph 1A
-Subparagraph (SX 210.13-01(a)(4)(i))
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480097/470-10-S99-1A

Reference 20: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 470
-SubTopic 10
-Name Accounting Standards Codification
-Section S99
-Paragraph 1A
-Subparagraph (SX 210.13-01(a)(4)(ii))
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480097/470-10-S99-1A

Reference 21: http://www.xbrl.org/2003/role/disclosureRef
-Topic 470
-SubTopic 10
-Name Accounting Standards Codification
-Section S99
-Paragraph 1A
-Subparagraph (SX 210.13-01(a)(4)(iii)(A))
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480097/470-10-S99-1A

Reference 22: http://www.xbrl.org/2003/role/disclosureRef
-Topic 470
-SubTopic 10
-Name Accounting Standards Codification
-Section S99
-Paragraph 1A
-Subparagraph (SX 210.13-01(a)(4)(iv))
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480097/470-10-S99-1A

Reference 23: http://www.xbrl.org/2003/role/disclosureRef
-Topic 470
-SubTopic 10
-Name Accounting Standards Codification
-Section S99
-Paragraph 1A
-Subparagraph (SX 210.13-01(a)(5))
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480097/470-10-S99-1A

Reference 24: http://www.xbrl.org/2003/role/disclosureRef
-Topic 470
-SubTopic 10
-Name Accounting Standards Codification
-Section S99
-Paragraph 1B
-Subparagraph (SX 210.13-02(a)(4)(i))
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480097/470-10-S99-1B

Reference 25: http://www.xbrl.org/2003/role/disclosureRef
-Topic 470
-SubTopic 10
-Name Accounting Standards Codification
-Section S99
-Paragraph 1B
-Subparagraph (SX 210.13-02(a)(4)(iii)(A))
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480097/470-10-S99-1B

Reference 26: http://www.xbrl.org/2003/role/disclosureRef
-Topic 470
-SubTopic 10
-Name Accounting Standards Codification
-Section S99
-Paragraph 1B
-Subparagraph (SX 210.13-02(a)(4)(iii)(B))
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480097/470-10-S99-1B

Reference 27: http://www.xbrl.org/2003/role/disclosureRef
-Topic 470
-SubTopic 10
-Name Accounting Standards Codification
-Section S99
-Paragraph 1B
-Subparagraph (SX 210.13-02(a)(4)(iv))
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480097/470-10-S99-1B

Reference 28: http://www.xbrl.org/2003/role/disclosureRef
-Topic 470
-SubTopic 10
-Name Accounting Standards Codification
-Section S99
-Paragraph 1B
-Subparagraph (SX 210.13-02(a)(5))
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480097/470-10-S99-1B

Reference 29: http://www.xbrl.org/2003/role/disclosureRef
-Topic 942
-SubTopic 235
-Name Accounting Standards Codification
-Section S99
-Paragraph 1
-Subparagraph (SX 210.9-05(b)(2))
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147477314/942-235-S99-1

Reference 30: http://www.xbrl.org/2003/role/disclosureRef
-Topic 205
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 7
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147483499/205-20-50-7

Reference 31: http://www.xbrl.org/2003/role/exampleRef
-Topic 810
-SubTopic 10
-Name Accounting Standards Codification
-Section 55
-Paragraph 4J
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147481175/810-10-55-4J

Reference 32: http://www.xbrl.org/2003/role/exampleRef
-Topic 810
-SubTopic 10
-Name Accounting Standards Codification
-Section 55
-Paragraph 4K
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147481175/810-10-55-4K

Reference 33: http://www.xbrl.org/2003/role/disclosureRef
-Topic 220
-SubTopic 10
-Name Accounting Standards Codification
-Section 45
-Paragraph 1A
-Subparagraph (a)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482790/220-10-45-1A

Reference 34: http://www.xbrl.org/2003/role/disclosureRef
-Topic 220
-SubTopic 10
-Name Accounting Standards Codification
-Section 45
-Paragraph 1B
-Subparagraph (a)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482790/220-10-45-1B

Reference 35: http://www.xbrl.org/2003/role/disclosureRef
-Topic 230
-SubTopic 10
-Name Accounting Standards Codification
-Section 45
-Paragraph 2
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482740/230-10-45-2

Reference 36: http://www.xbrl.org/2003/role/disclosureRef
-Topic 810
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 1A
-Subparagraph (a)(1)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147481203/810-10-50-1A

Reference 37: http://www.xbrl.org/2003/role/disclosureRef
-Topic 810
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 1A
-Subparagraph (c)(1)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147481203/810-10-50-1A

+ Details

Note 3 - Inventories

12 Months Ended

Aug. 31, 2024

Notes to Financial Statements

Inventory Disclosure [Text Block]

3.	INVENTORIES

Inventories consisted of the following:

	August 31, 2024		August 31, 2023
Production materials	$	5,513,409	$	4,960,355
Finished goods		8,877,435		8,136,134
	$	14,390,844	$	13,096,489

Note 10 - Stock-based Compensation

12 Months Ended

Aug. 31, 2024

Notes to Financial Statements

Share-Based Payment Arrangement [Text Block]

10.

STOCK-BASED COMPENSATION

The Company has four stock-based compensation plans under which stock options or other stock-based awards have been granted: the Northern Technologies International Corporation 2024 Stock Incentive Plan, the Northern Technologies International Corporation Amended and Restated 2019 Stock Incentive Plan, the Northern Technologies International Corporation Amended and Restated 2007 Stock Incentive Plan (the 2007 Plan) and the Northern Technologies International Corporation Employee Stock Purchase Plan. The 2024 Plan replaced the 2019 Plan with respect to future award grants, which had replaced the 2007 Plan with respect to future grants; and, therefore, no further awards may be made under the 2019 Plan or 2007 Plan. The Compensation Committee of the Board of Directors and the Board of Directors administer these plans.

The 2024 Plan provides for the grant of incentive stock options, non-statutory stock options, stock appreciation rights, restricted stock, stock unit awards, performance awards, and stock bonuses to eligible recipients to enable the Company and its subsidiaries to attract and retain qualified individuals through opportunities for equity participation in the Company and to reward those individuals who contribute to the achievement of the Company’s economic objectives. Subject to adjustment as provided in the 2024 Plan, the maximum number of shares of the Company’s common stock available for issuance under the 2024 Plan is (i) 800,000 shares of the Company’s common stock; plus (ii) the number of shares of the Company’s common stock remaining available for issuance under the 2019 Plan but not subject to outstanding awards under the 2019 Plan as of January 19, 2024; plus (iii) the number of additional shares of the Company’s common stock subject to awards outstanding under the 2019 Plan as of January 19, 2024 but only to the extent that such outstanding awards are forfeited, cancelled, expire, or otherwise terminate without the issuance of such shares of the Company’s common stock after January 19, 2024. Options granted generally have a term of ten years and become exercisable over a one- or three- year period beginning on the one-year anniversary of the date of grant. Options are granted at per share exercise prices equal to the market value of the Company’s common stock on the date of grant. The Company issues new shares upon the exercise of options. As of August 31, 2024, options to purchase an aggregate of 0 shares of the Company’s common stock were outstanding under the 2024 Plan and 957,059 shares of the Company’s common stock remain available for grant under the 2024 Plan. As of August 31, 2024, options to purchase an aggregate of 1,387,415 shares of the Company’s common stock were outstanding under the 2019 Plan, and 365,251 shares of the Company’s common stock were outstanding under the 2007 Plan.

The Company granted options to purchase an aggregate of 269,844 and 277,613 shares of its common stock during fiscal 2024 and 2023, respectively. The fair value of option grants is determined at the date of grant using the Black-Scholes option pricing model with the assumptions listed below. The Company recognized compensation expense of $1,381,169 during fiscal 2024 and compensation expense of $1,337,734 during fiscal 2023 related to the options that vested during such time period. As of August 31, 2024, the total compensation cost for non-vested options not yet recognized in the Company’s consolidated statements of operations was $1,007,636. Stock-based compensation expense of $672,134 is expected during fiscal 2025 and $335,502 is expected to be recognized during fiscal 2026, based on outstanding options as of August 31, 2024. Future option grants will impact the compensation expense recognized. Stock-based compensation expense is included in general and administrative expense on the consolidated statements of operations.

The fair value of each option grant is estimated on the grant date using the Black-Scholes option pricing model with the following assumptions and results for the grants:

	Fiscal Year 2024			Fiscal Year 2023
Dividend yield		2.18	%		2.44	%
Expected volatility		46.1	%		45.2	%
Expected life of option (years)	5			10
Weighted average risk-free interest rate		4.23	%		3.31	%

Stock option activity during the periods indicated was as follows:

	Number of Shares (#)			Weighted Average Exercise Price		Aggregate Intrinsic Value
Outstanding at August 31, 2022		1,544,726		$	10.23
Options granted		277,613			11.41
Options exercised		(265,209	)		6.46
Options terminated		—			—

Outstanding at August 31, 2023		1,557,130		$	11.08
Options granted		269,844			13.25
Options exercised		(74,309	)		9.76
Options terminated		—			—

Outstanding at August 31, 2024		1,752,665		$	11.47	$	4,289,563

Exercisable at August 31, 2024		1,297,635		$	10.91	$	4,045,286

The weighted average per share fair value of options granted during fiscal 2024 and fiscal 2023 was $13.25 and $11.41, respectively. The weighted average remaining contractual life of the options outstanding as of August 31, 2024 and 2023 was 6.03 years and 6.25 years, respectively.

Note 4 - Property and Equipment, Net

12 Months Ended

Aug. 31, 2024

Notes to Financial Statements

Property, Plant and Equipment Disclosure [Text Block]

4.	PROPERTY AND EQUIPMENT, NET

Property and equipment, net consisted of the following:

	August 31, 2024			August 31, 2023
Land	$	1,238,180		$	496,965
Buildings and improvements		14,760,250			16,433,827
Construction in process		3,086,479			816,565
Machinery and equipment		7,276,151			5,984,364
		26,361,060			23,731,721
Less accumulated depreciation		(10,095,407	)		(9,666,367	)
	$	16,265,653		$	14,065,354

On February 28, 2023, the Company purchased the property immediately adjacent to NTIC’s headquarters in Circle Pines, Minnesota, which includes a 26,000 square foot industrial building, for $1,200,000. The building will be used primarily for warehousing space and light industrial production. Depreciation expense was $1,156,364 for fiscal 2024 compared to $1,042,505 in fiscal 2023.