000 - Document - Document And Entity Information link:calculationLink link:definitionLink link:presentationLink 001 - Statement - Condensed Consolidated Balance Sheets (Current Period Unaudited) link:calculationLink link:definitionLink link:presentationLink 002 - Statement - Condensed Consolidated Balance Sheets (Current Period Unaudited) (Parentheticals) link:calculationLink link:definitionLink link:presentationLink 003 - Statement - Condensed Consolidated Statements of Operations (Unaudited) link:calculationLink link:definitionLink link:presentationLink 004 - Statement - Condensed Consolidated Statements of Comprehensive Earnings (Unaudited) link:calculationLink link:definitionLink link:presentationLink 005 - Statement - Condensed Consolidated Statements of Shareholders' Equity (Unaudited) link:calculationLink link:definitionLink link:presentationLink 006 - Statement - Condensed Consolidated Statements of Shareholders' Equity (Unaudited) (Parentheticals) link:calculationLink link:definitionLink link:presentationLink 007 - Statement - Condensed Consolidated Statements of Cash Flows (Unaudited) link:calculationLink link:definitionLink link:presentationLink 008 - Disclosure - Note 1 - Consolidated Financial Statements link:calculationLink link:definitionLink link:presentationLink 009 - Disclosure - Note 2 - Fair Value Measurements link:calculationLink link:definitionLink link:presentationLink 010 - Disclosure - Note 3 - Marketable Securities link:calculationLink link:definitionLink link:presentationLink 011 - Disclosure - Note 4 - Inventories link:calculationLink link:definitionLink link:presentationLink 012 - Disclosure - Note 5 - Leases link:calculationLink link:definitionLink link:presentationLink 013 - Disclosure - Note 6 - Stock-based Compensation link:calculationLink link:definitionLink link:presentationLink 014 - Disclosure - Note 7 - Earnings Per Share link:calculationLink link:definitionLink link:presentationLink 015 - Disclosure - Note 8 - Shareholders' Equity link:calculationLink link:definitionLink link:presentationLink 016 - Disclosure - Note 9 - Income Taxes link:calculationLink link:definitionLink link:presentationLink 017 - Disclosure - Note 10 - Geographic Regions link:calculationLink link:definitionLink link:presentationLink 018 - Disclosure - Note 11 - Commitments and Contingencies link:calculationLink link:definitionLink link:presentationLink 019 - Disclosure - Note 12 - Operating Segment link:calculationLink link:definitionLink link:presentationLink 020 - Disclosure - Note 13 - Subsequent Event link:calculationLink link:definitionLink link:presentationLink 995445 - Disclosure - Note 3 - Marketable Securities (Tables) link:calculationLink link:definitionLink link:presentationLink 995446 - Disclosure - Note 4 - Inventories (Tables) link:calculationLink link:definitionLink link:presentationLink 995447 - Disclosure - Note 5 - Leases (Tables) link:calculationLink link:definitionLink link:presentationLink 995448 - Disclosure - Note 6 - Stock-based Compensation (Tables) link:calculationLink link:definitionLink link:presentationLink 995449 - Disclosure - Note 7 - Earnings Per Share (Tables) link:calculationLink link:definitionLink link:presentationLink 995450 - Disclosure - Note 10 - Geographic Regions (Tables) link:calculationLink link:definitionLink link:presentationLink 995451 - Disclosure - Note 3 - Marketable Securities - Summary of Available-for-sale Securities (Details) link:calculationLink link:definitionLink link:presentationLink 995452 - Disclosure - Note 3 - Marketable Securities - Summary of Unrealized Gains and Losses on Available-for-sale Securities (Details) link:calculationLink link:definitionLink link:presentationLink 995453 - Disclosure - Note 3 - Marketable Securities - Estimated Fair Value of Securities by Contractual Maturity (Details) link:calculationLink link:definitionLink link:presentationLink 995454 - Disclosure - Note 4 - Inventories - Summary of Inventories (Details) link:calculationLink link:definitionLink link:presentationLink 995455 - Disclosure - Note 5 - Leases (Details Textual) link:calculationLink link:definitionLink link:presentationLink 995456 - Disclosure - Note 5 - Leases - Future Minimum Lease Payments (Details) link:calculationLink link:definitionLink link:presentationLink 995457 - Disclosure - Note 5 - Leases - Schedule of Right-of-use Assets and Operating Lease Liabilities (Details) link:calculationLink link:definitionLink link:presentationLink 995458 - Disclosure - Note 6 - Stock-based Compensation (Details Textual) link:calculationLink link:definitionLink link:presentationLink 995459 - Disclosure - Note 6 - Stock-based Compensation - Option Activity (Details) link:calculationLink link:definitionLink link:presentationLink 995460 - Disclosure - Note 7 - Earnings Per Share (Details Textual) link:calculationLink link:definitionLink link:presentationLink 995461 - Disclosure - Note 7 - Earnings Per Share - Basic and Diluted Earnings Per Share (Details) link:calculationLink link:definitionLink link:presentationLink 995462 - Disclosure - Note 8 - Shareholders' Equity (Details Textual) link:calculationLink link:definitionLink link:presentationLink 995463 - Disclosure - Note 9 - Income Taxes (Details Textual) link:calculationLink link:definitionLink link:presentationLink 995464 - Disclosure - Note 10 - Geographic Regions - Financial Information by Geographic Region (Details) link:calculationLink link:definitionLink link:presentationLink 995465 - Disclosure - Note 11 - Commitments and Contingencies (Details Textual) link:calculationLink link:definitionLink link:presentationLink 995466 - Disclosure - Note 12 - Operating Segment (Details Textual) link:calculationLink link:definitionLink link:presentationLink 995467 - Disclosure - Note 13 - Subsequent Event (Details Textual) link:calculationLink link:definitionLink link:presentationLink