000 - Document - Document And Entity Information link:calculationLink link:definitionLink link:presentationLink 001 - Statement - Condensed Consolidated Balance Sheets link:calculationLink link:definitionLink link:presentationLink 002 - Statement - Condensed Consolidated Balance Sheets (Parentheticals) link:calculationLink link:definitionLink link:presentationLink 003 - Statement - Condensed Consolidated Statements of Operations link:calculationLink link:definitionLink link:presentationLink 004 - Statement - Consolidated Statements of Comprehensive Earnings link:calculationLink link:definitionLink link:presentationLink 005 - Statement - Condensed Consolidated Statements of Shareholders' Equity link:calculationLink link:definitionLink link:presentationLink 006 - Statement - Condensed Consolidated Statements of Shareholders' Equity (Parentheticals) link:calculationLink link:definitionLink link:presentationLink 007 - Statement - Consolidated Statements of Cash Flows link:calculationLink link:definitionLink link:presentationLink 995550 - Disclosure - Note 1 - Summary of Significant Accounting Policies link:calculationLink link:definitionLink link:presentationLink 995551 - Disclosure - Note 2 - Marketable Securities link:calculationLink link:definitionLink link:presentationLink 995552 - Disclosure - Note 3 - Other Consolidated Balance Sheet Data link:calculationLink link:definitionLink link:presentationLink 995553 - Disclosure - Note 4 - Income Taxes link:calculationLink link:definitionLink link:presentationLink 995554 - Disclosure - Note 5 - Stock-based Compensation link:calculationLink link:definitionLink link:presentationLink 995555 - Disclosure - Note 6 - Shareholders' Equity link:calculationLink link:definitionLink link:presentationLink 995556 - Disclosure - Note 7 - Earnings Per Share link:calculationLink link:definitionLink link:presentationLink 995557 - Disclosure - Note 8 - Employee Benefit Plans link:calculationLink link:definitionLink link:presentationLink 995558 - Disclosure - Note 9 - Leases and Commitments link:calculationLink link:definitionLink link:presentationLink 995559 - Disclosure - Note 10 - Contingencies link:calculationLink link:definitionLink link:presentationLink 995560 - Disclosure - Note 11 - Geographic Regions link:calculationLink link:definitionLink link:presentationLink 995561 - Disclosure - Note 12 - Customer and Supplier Concentrations link:calculationLink link:definitionLink link:presentationLink 995562 - Disclosure - Note 13 - Accounting Pronouncements link:calculationLink link:definitionLink link:presentationLink 995563 - Disclosure - Schedule II - Valuation and Qualifying Accounts link:calculationLink link:definitionLink link:presentationLink 995564 - Disclosure - Significant Accounting Policies (Policies) link:calculationLink link:definitionLink link:presentationLink 995565 - Disclosure - Note 1 - Summary of Significant Accounting Policies (Tables) link:calculationLink link:definitionLink link:presentationLink 995566 - Disclosure - Note 2 - Marketable Securities (Tables) link:calculationLink link:definitionLink link:presentationLink 995567 - Disclosure - Note 3 - Other Consolidated Balance Sheet Data (Tables) link:calculationLink link:definitionLink link:presentationLink 995568 - Disclosure - Note 4 - Income Taxes (Tables) link:calculationLink link:definitionLink link:presentationLink 995569 - Disclosure - Note 5 - Stock-based Compensation (Tables) link:calculationLink link:definitionLink link:presentationLink 995570 - Disclosure - Note 6 - Shareholders' Equity (Tables) link:calculationLink link:definitionLink link:presentationLink 995571 - Disclosure - Note 7 - Earnings Per Share (Tables) link:calculationLink link:definitionLink link:presentationLink 995572 - Disclosure - Note 9 - Leases and Commitments (Tables) link:calculationLink link:definitionLink link:presentationLink 995573 - Disclosure - Note 11 - Geographic Regions (Tables) link:calculationLink link:definitionLink link:presentationLink 995574 - Disclosure - Schedule II - Valuation and Qualifying Accounts (Tables) link:calculationLink link:definitionLink link:presentationLink 995575 - Disclosure - Note 1 - Summary of Significant Accounting Policies (Details Textual) link:calculationLink link:definitionLink link:presentationLink 995576 - Disclosure - Note 1 - Summary of Significant Accounting Policies - Supplemental Cash Flow information (Details) link:calculationLink link:definitionLink link:presentationLink 995577 - Disclosure - Note 2 - Marketable Securities - Summary of Available-for-sale Securities (Details) link:calculationLink link:definitionLink link:presentationLink 995578 - Disclosure - Note 2 - Marketable Securities - Summary of Unrealized Gains and Losses on Available-for-sale Securities (Details) link:calculationLink link:definitionLink link:presentationLink 995579 - Disclosure - Note 2 - Marketable Securities - Summary of Realized Gains (Losses) on Available-for-Sale Securities (Details) link:calculationLink link:definitionLink link:presentationLink 995580 - Disclosure - Note 2 - Marketable Securities - Estimated Fair Value of Securities by Contractual Maturity (Details) link:calculationLink link:definitionLink link:presentationLink 995581 - Disclosure - Note 3 - Other Consolidated Balance Sheet Data - Other Consolidated Balance Sheet Data (Details) link:calculationLink link:definitionLink link:presentationLink 995582 - Disclosure - Note 4 - Income Taxes (Details Textual) link:calculationLink link:definitionLink link:presentationLink 995583 - Disclosure - Note 4 - Income Taxes - Provision for Income Taxes (Details) link:calculationLink link:definitionLink link:presentationLink 995584 - Disclosure - Note 4 - Income Taxes - Components of Earnings Before Income Taxes (Details) link:calculationLink link:definitionLink link:presentationLink 995585 - Disclosure - Note 4 - Income Taxes - Effective Income Tax Reconciliation (Details) link:calculationLink link:definitionLink link:presentationLink 995586 - Disclosure - Note 4 - Income Taxes - Components of Deferred Tax Liabilities and Assets (Details) link:calculationLink link:definitionLink link:presentationLink 995587 - Disclosure - Note 4 - Income Taxes - Schedule of Income Taxes Paid (Details) link:calculationLink link:definitionLink link:presentationLink 995588 - Disclosure - Note 4 - Income Taxes - Unrecognized Tax Benefits (Details) link:calculationLink link:definitionLink link:presentationLink 995589 - Disclosure - Note 4 - Income Taxes - Open Tax Years by Major Jurisdiction (Details) link:calculationLink link:definitionLink link:presentationLink 995590 - Disclosure - Note 5 - Stock-based Compensation (Details Textual) link:calculationLink link:definitionLink link:presentationLink 995591 - Disclosure - Note 5 - Stock-based Compensation - Fair Value Assumptions (Details) link:calculationLink link:definitionLink link:presentationLink 995592 - Disclosure - Note 5 - Stock-based Compensation - Option Activity (Details) link:calculationLink link:definitionLink link:presentationLink 995593 - Disclosure - Note 5 - Stock-based Compensation - Non-vested Options (Details) link:calculationLink link:definitionLink link:presentationLink 995594 - Disclosure - Note 6 - Shareholders' Equity (Details Textual) link:calculationLink link:definitionLink link:presentationLink 995595 - Disclosure - Note 6 - Shareholders' Equity - Accumulated Other Comprehensive Income (Details) link:calculationLink link:definitionLink link:presentationLink 995596 - Disclosure - Note 6 - Shareholders' Equity - Accumulated Other Comprehensive Income (Details) (Parentheticals) link:calculationLink link:definitionLink link:presentationLink 995597 - Disclosure - Note 7 - Earnings Per Share (Details Textual) link:calculationLink link:definitionLink link:presentationLink 995598 - Disclosure - Note 7 - Earnings Per Share - Basic and Diluted Earnings Per Share (Details) link:calculationLink link:definitionLink link:presentationLink 995599 - Disclosure - Note 8 - Employee Benefit Plans (Details Textual) link:calculationLink link:definitionLink link:presentationLink 995600 - Disclosure - Note 9 - Leases and Commitments (Details Textual) link:calculationLink link:definitionLink link:presentationLink 995601 - Disclosure - Note 9 - Leases and Commitments- Future Minimum Lease Payments (Details) link:calculationLink link:definitionLink link:presentationLink 995602 - Disclosure - Note 9 - Leases and Commitments - Schedule of Right-of-use Assets and Operating Lease Liabilities (Details) link:calculationLink link:definitionLink link:presentationLink 995603 - Disclosure - Note 10 - Contingencies (Details Textual) link:calculationLink link:definitionLink link:presentationLink 995604 - Disclosure - Note 11 - Geographic Regions - Financial Information by Geographic Region (Details) link:calculationLink link:definitionLink link:presentationLink 995605 - Disclosure - Note 12 - Customer and Supplier Concentrations (Details Textual) link:calculationLink link:definitionLink link:presentationLink 995606 - Disclosure - Schedule II - Valuation and Qualifying Accounts - Valuation and Qualifying Accounts (Details) link:calculationLink link:definitionLink link:presentationLink