001 - Statement - Consolidated Balance Sheets link:presentationLink link:definitionLink link:calculationLink 002 - Statement - Consolidated Balance Sheets (Parentheticals) link:presentationLink link:definitionLink link:calculationLink 003 - Statement - Consolidated Statements of Operations link:presentationLink link:definitionLink link:calculationLink 004 - Statement - Consolidated Statements of Comprehensive Income link:presentationLink link:definitionLink link:calculationLink 005 - Statement - Consolidated Statements of Equity link:presentationLink link:definitionLink link:calculationLink 006 - Statement - Consolidated Statements of Cash Flows link:presentationLink link:definitionLink link:calculationLink 007 - Disclosure - Note 1 - Nature of Business and Significant Accounting Policies link:presentationLink link:definitionLink link:calculationLink 008 - Disclosure - Note 2 - Recently Issued Accounting Pronouncements link:presentationLink link:definitionLink link:calculationLink 009 - Disclosure - Note 3 - NTI ASEAN link:presentationLink link:definitionLink link:calculationLink 010 - Disclosure - Note 4 - Inventories link:presentationLink link:definitionLink link:calculationLink 011 - Disclosure - Note 5 - Property and Equipment, Net link:presentationLink link:definitionLink link:calculationLink 012 - Disclosure - Note 6 - Patents and Trademarks, Net link:presentationLink link:definitionLink link:calculationLink 013 - Disclosure - Note 7 - Investments in Joint Ventures link:presentationLink link:definitionLink link:calculationLink 014 - Disclosure - Note 8 - Corporate Debt link:presentationLink link:definitionLink link:calculationLink 015 - Disclosure - Note 9 - Stockholders' Equity link:presentationLink link:definitionLink link:calculationLink 016 - Disclosure - Note 10 - Net Income Per Common Share link:presentationLink link:definitionLink link:calculationLink 017 - Disclosure - Note 11 - Stock-Based Compensation link:presentationLink link:definitionLink link:calculationLink 018 - Disclosure - Note 12 - Geographic and Segment Information link:presentationLink link:definitionLink link:calculationLink 019 - Disclosure - Note 13 - Retirement Plan link:presentationLink link:definitionLink link:calculationLink 020 - Disclosure - Note 14 - Related Party Transactions link:presentationLink link:definitionLink link:calculationLink 021 - Disclosure - Note 15 - Income Taxes link:presentationLink link:definitionLink link:calculationLink 022 - Disclosure - Note 16 - Commitments and Contingencies link:presentationLink link:definitionLink link:calculationLink 023 - Disclosure - Note 17 - Statements of Cash Flows link:presentationLink link:definitionLink link:calculationLink 024 - Disclosure - Note 18 - Fair Value Measurements link:presentationLink link:definitionLink link:calculationLink 025 - Disclosure - Note 19 - Quarterly Information (Unaudited) link:presentationLink link:definitionLink link:calculationLink 026 - Disclosure - Accounting Policies, by Policy (Policies) link:presentationLink link:definitionLink link:calculationLink 027 - Disclosure - Note 3 - NTI ASEAN (Tables) link:presentationLink link:definitionLink link:calculationLink 028 - Disclosure - Note 4 - Inventories (Tables) link:presentationLink link:definitionLink link:calculationLink 029 - Disclosure - Note 5 - Property and Equipment, Net (Tables) link:presentationLink link:definitionLink link:calculationLink 030 - Disclosure - Note 6 - Patents and Trademarks, Net (Tables) link:presentationLink link:definitionLink link:calculationLink 031 - Disclosure - Note 7 - Investments in Joint Ventures (Tables) link:presentationLink link:definitionLink link:calculationLink 032 - Disclosure - Note 9 - Stockholders' Equity (Tables) link:presentationLink link:definitionLink link:calculationLink 033 - Disclosure - Note 10 - Net Income Per Common Share (Tables) link:presentationLink link:definitionLink link:calculationLink 034 - Disclosure - Note 11 - Stock-Based Compensation (Tables) link:presentationLink link:definitionLink link:calculationLink 035 - Disclosure - Note 12 - Geographic and Segment Information (Tables) link:presentationLink link:definitionLink link:calculationLink 036 - Disclosure - Note 15 - Income Taxes (Tables) link:presentationLink link:definitionLink link:calculationLink 037 - Disclosure - Note 17 - Statements of Cash Flows (Tables) link:presentationLink link:definitionLink link:calculationLink 038 - Disclosure - Note 18 - Fair Value Measurements (Tables) link:presentationLink link:definitionLink link:calculationLink 039 - Disclosure - Note 19 - Quarterly Information (Unaudited) (Tables) link:presentationLink link:definitionLink link:calculationLink 040 - Disclosure - Note 1 - Nature of Business and Significant Accounting Policies (Details) link:presentationLink link:definitionLink link:calculationLink 041 - Disclosure - Note 3 - NTI ASEAN (Details) link:presentationLink link:definitionLink link:calculationLink 042 - Disclosure - Note 3 - NTI ASEAN (Details) - Allocation of the Total Transaction Amount link:presentationLink link:definitionLink link:calculationLink 043 - Disclosure - Note 4 - Inventories (Details) - Inventories link:presentationLink link:definitionLink link:calculationLink 044 - Disclosure - Note 5 - Property and Equipment, Net (Details) - Components of Property and Equipment, Net link:presentationLink link:definitionLink link:calculationLink 045 - Disclosure - Note 6 - Patents and Trademarks, Net (Details) link:presentationLink link:definitionLink link:calculationLink 046 - Disclosure - Note 6 - Patents and Trademarks, Net (Details) - Patents and Trademarks, Net link:presentationLink link:definitionLink link:calculationLink 047 - Disclosure - Note 7 - Investments in Joint Ventures (Details) link:presentationLink link:definitionLink link:calculationLink 048 - Disclosure - Note 7 - Investments in Joint Ventures (Details) - Condensed Balance Sheet of EXCOR and NTI ASEAN, and All Other Joint Ventures link:presentationLink link:definitionLink link:calculationLink 049 - Disclosure - Note 7 - Investments in Joint Ventures (Details) - Condensed Income Statement of EXCOR and NTI ASEAN, and All Other Joint Ventures: link:presentationLink link:definitionLink link:calculationLink 050 - Disclosure - Note 8 - Corporate Debt (Details) link:presentationLink link:definitionLink link:calculationLink 051 - Disclosure - Note 9 - Stockholders' Equity (Details) link:presentationLink link:definitionLink link:calculationLink 052 - Disclosure - Note 9 - Stockholders' Equity (Details) - Exercised Stock Options link:presentationLink link:definitionLink link:calculationLink 053 - Disclosure - Note 10 - Net Income Per Common Share (Details) link:presentationLink link:definitionLink link:calculationLink 054 - Disclosure - Note 10 - Net Income Per Common Share (Details) - Reconciliation of the Earnings Per Share Computations link:presentationLink link:definitionLink link:calculationLink 055 - Disclosure - Note 11 - Stock-Based Compensation (Details) link:presentationLink link:definitionLink link:calculationLink 056 - Disclosure - Note 11 - Stock-Based Compensation (Details) - Black-Scholes Option-Pricing Model Assumptions link:presentationLink link:definitionLink link:calculationLink 057 - Disclosure - Note 11 - Stock-Based Compensation (Details) - Stock Option Activity link:presentationLink link:definitionLink link:calculationLink 058 - Disclosure - Note 12 - Geographic and Segment Information (Details) - Net Sales by Geographic Location as Percentage of Total Consolidated Net Sales link:presentationLink link:definitionLink link:calculationLink 059 - Disclosure - Note 12 - Geographic and Segment Information (Details) - Fees for Services Provided to Joint Ventures by Geographic Location as a Percentage of Total Fees for Services Provided to Joint Ventures link:presentationLink link:definitionLink link:calculationLink 060 - Disclosure - Note 12 - Geographic and Segment Information (Details) - Net Sales by Segment link:presentationLink link:definitionLink link:calculationLink 061 - Disclosure - Note 12 - Geographic and Segment Information (Details) - Cost of Goods Sold by Segment link:presentationLink link:definitionLink link:calculationLink 062 - Disclosure - Note 12 - Geographic and Segment Information (Details) - Total Assets by Geographic Distribution link:presentationLink link:definitionLink link:calculationLink 063 - Disclosure - Note 12 - Geographic and Segment Information (Details) - Operating Income by Geographic Distribution link:presentationLink link:definitionLink link:calculationLink 064 - Disclosure - Note 13 - Retirement Plan (Details) link:presentationLink link:definitionLink link:calculationLink 065 - Disclosure - Note 14 - Related Party Transactions (Details) link:presentationLink link:definitionLink link:calculationLink 066 - Disclosure - Note 15 - Income Taxes (Details) link:presentationLink link:definitionLink link:calculationLink 067 - Disclosure - Note 15 - Income Taxes (Details) - Provision for Income Taxes link:presentationLink link:definitionLink link:calculationLink 068 - Disclosure - Note 15 - Income Taxes (Details) - Reconciliations of the Expected Federal Income Tax at the Statutory Rate with the Provisions For Income Taxes link:presentationLink link:definitionLink link:calculationLink 069 - Disclosure - Note 15 - Income Taxes (Details) - Tax Effect of the Temporary Differences and Tax Carry Forwards Comprising Net Deferred Taxes: link:presentationLink link:definitionLink link:calculationLink 070 - Disclosure - Note 15 - Income Taxes (Details) - Reconciliation of the Total Amounts of Unrecognized Tax Benefits: link:presentationLink link:definitionLink link:calculationLink 071 - Disclosure - Note 16 - Commitments and Contingencies (Details) link:presentationLink link:definitionLink link:calculationLink 072 - Disclosure - Note 17 - Statements of Cash Flows (Details) - Supplemental Disclosures of Cash Flow Information link:presentationLink link:definitionLink link:calculationLink 073 - Disclosure - Note 18 - Fair Value Measurements (Details) link:presentationLink link:definitionLink link:calculationLink 074 - Disclosure - Note 18 - Fair Value Measurements (Details) - Assets and Liabilities Measured at Fair Value Recurring Basis link:presentationLink link:definitionLink link:calculationLink 075 - Disclosure - Note 19 - Quarterly Information (Unaudited) (Details) - Quarterly Information (Unaudited) link:presentationLink link:definitionLink link:calculationLink 000 - Disclosure - Document And Entity Information link:presentationLink link:definitionLink link:calculationLink