000 - Document - Document And Entity Information link:calculationLink link:definitionLink link:presentationLink 001 - Statement - Unaudited Condensed Consolidated Balance Sheets link:calculationLink link:definitionLink link:presentationLink 002 - Statement - Unaudited Condensed Consolidated Balance Sheets (Parentheticals) link:calculationLink link:definitionLink link:presentationLink 003 - Statement - Unaudited Condensed Consolidated Statements of Operations and Comprehensive Income (Loss) link:calculationLink link:definitionLink link:presentationLink 004 - Statement - Unaudited Condensed Consolidated Statements of Cash Flows link:calculationLink link:definitionLink link:presentationLink 005 - Disclosure - Note 1 - Business Description, Basis of Presentation and Significant Accounting Policies link:calculationLink link:definitionLink link:presentationLink 006 - Disclosure - Note 2 - Revenue Information link:calculationLink link:definitionLink link:presentationLink 007 - Disclosure - Note 3 - Earnings (Loss) Per Share link:calculationLink link:definitionLink link:presentationLink 008 - Disclosure - Note 4 - Marketable Securities link:calculationLink link:definitionLink link:presentationLink 009 - Disclosure - Note 5 - Intangible Assets link:calculationLink link:definitionLink link:presentationLink 010 - Disclosure - Note 6 - Inventories link:calculationLink link:definitionLink link:presentationLink 011 - Disclosure - Note 7 - Share-based Compensation link:calculationLink link:definitionLink link:presentationLink 012 - Disclosure - Note 8 - Shareholders' Equity link:calculationLink link:definitionLink link:presentationLink 013 - Disclosure - Note 9 - Fair Value Measurements link:calculationLink link:definitionLink link:presentationLink 014 - Disclosure - Note 10 - Income Taxes link:calculationLink link:definitionLink link:presentationLink 015 - Document - Note 11 - Subsequent Events link:calculationLink link:definitionLink link:presentationLink 016 - Disclosure - Significant Accounting Policies (Policies) link:calculationLink link:definitionLink link:presentationLink 017 - Disclosure - Note 2 - Revenue Information (Tables) link:calculationLink link:definitionLink link:presentationLink 018 - Disclosure - Note 3 - Earnings (Loss) Per Share (Tables) link:calculationLink link:definitionLink link:presentationLink 019 - Disclosure - Note 4 - Marketable Securities (Tables) link:calculationLink link:definitionLink link:presentationLink 020 - Disclosure - Note 5 - Intangible Assets (Tables) link:calculationLink link:definitionLink link:presentationLink 021 - Disclosure - Note 6 - Inventories (Tables) link:calculationLink link:definitionLink link:presentationLink 022 - Disclosure - Note 7 - Share-based Compensation (Tables) link:calculationLink link:definitionLink link:presentationLink 023 - Disclosure - Note 8 - Shareholders' Equity (Tables) link:calculationLink link:definitionLink link:presentationLink 024 - Disclosure - Note 9 - Fair Value Measurements (Tables) link:calculationLink link:definitionLink link:presentationLink 025 - Disclosure - Note 1 - Business Description, Basis of Presentation and Significant Accounting Policies (Details Textual) link:calculationLink link:definitionLink link:presentationLink 026 - Disclosure - Note 2 - Revenue Information - Revenue by Product Group (Details) link:calculationLink link:definitionLink link:presentationLink 027 - Disclosure - Note 3 - Earnings (Loss) Per Share - Computation of Basic and Diluted Earnings per Common Share (Details) link:calculationLink link:definitionLink link:presentationLink 028 - Disclosure - Note 4 - Marketable Securities - Available-for-sale Securities by Major Security Type (Details) link:calculationLink link:definitionLink link:presentationLink 029 - Disclosure - Note 4 - Marketable Securities - Maturities of Available-for-sale Securities (Details) link:calculationLink link:definitionLink link:presentationLink 030 - Disclosure - Note 4 - Marketable Securities - Available-for-sale Marketable Securities in Gross Unrealized Loss Position (Details) link:calculationLink link:definitionLink link:presentationLink 031 - Disclosure - Note 5 - Intangible Assets - Intangible Assets (Details) link:calculationLink link:definitionLink link:presentationLink 032 - Disclosure - Note 5 - Intangible Assets - Schedule of Amortization of Intangible Assets (Details) link:calculationLink link:definitionLink link:presentationLink 033 - Disclosure - Note 5 - Intangible Assets - Schedule of Estimated Future Amortization Expense of Intangible Assets (Details) link:calculationLink link:definitionLink link:presentationLink 034 - Disclosure - Note 6 - Inventories (Details Textual) link:calculationLink link:definitionLink link:presentationLink 035 - Disclosure - Note 6 - Inventories - Inventories (Details) link:calculationLink link:definitionLink link:presentationLink 036 - Disclosure - Note 7 - Share-based Compensation (Details Textual) link:calculationLink link:definitionLink link:presentationLink 037 - Disclosure - Note 7 - Share-based Compensation - Stock Option Activity (Details) link:calculationLink link:definitionLink link:presentationLink 038 - Disclosure - Note 7 - Share-based Compensation - Schedule of Share-based Compensation Expense (Details) link:calculationLink link:definitionLink link:presentationLink 039 - Disclosure - Note 8 - Shareholders' Equity (Details Textual) link:calculationLink link:definitionLink link:presentationLink 040 - Disclosure - Note 8 - Shareholders' Equity - Stock Repurchase Program (Details) link:calculationLink link:definitionLink link:presentationLink 041 - Disclosure - Note 9 - Fair Value Measurements - Fair Value of Financial Instruments (Details) link:calculationLink link:definitionLink link:presentationLink 042 - Disclosure - Note 10 - Income Taxes (Details Textual) link:calculationLink link:definitionLink link:presentationLink