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 and Comprehensive Income (Unaudited) link:calculationLink link:definitionLink link:presentationLink 004 - Statement - Condensed Consolidated Statements of Cash Flows (Unaudited) link:calculationLink link:definitionLink link:presentationLink 005 - Disclosure - Note 1 - Basis of Preparation link:calculationLink link:definitionLink link:presentationLink 006 - Disclosure - Note 2 - Revenue link:calculationLink link:definitionLink link:presentationLink 007 - Disclosure - Note 3 - Leases link:calculationLink link:definitionLink link:presentationLink 008 - Disclosure - Note 4 - Other Assets link:calculationLink link:definitionLink link:presentationLink 009 - Disclosure - Note 5 - Accrued Expenses link:calculationLink link:definitionLink link:presentationLink 010 - Disclosure - Note 6 - Stock-based Compensation link:calculationLink link:definitionLink link:presentationLink 011 - Disclosure - Note 7 - Income Taxes link:calculationLink link:definitionLink link:presentationLink 012 - Disclosure - Note 8 - Stockholders' Equity link:calculationLink link:definitionLink link:presentationLink 013 - Disclosure - Note 9 - Income per Share link:calculationLink link:definitionLink link:presentationLink 014 - Disclosure - Note 10 - Comprehensive Income link:calculationLink link:definitionLink link:presentationLink 015 - Disclosure - Note 11 - Segment Information link:calculationLink link:definitionLink link:presentationLink 016 - Disclosure - Note 12 - Contingencies link:calculationLink link:definitionLink link:presentationLink 995463 - Disclosure - Note 3 - Leases (Tables) link:calculationLink link:definitionLink link:presentationLink 995464 - Disclosure - Note 4 - Other Assets (Tables) link:calculationLink link:definitionLink link:presentationLink 995465 - Disclosure - Note 5 - Accrued Expenses (Tables) link:calculationLink link:definitionLink link:presentationLink 995466 - Disclosure - Note 6 - Stock-based Compensation (Tables) link:calculationLink link:definitionLink link:presentationLink 995467 - Disclosure - Note 8 - Stockholders' Equity (Tables) link:calculationLink link:definitionLink link:presentationLink 995468 - Disclosure - Note 9 - Income per Share (Tables) link:calculationLink link:definitionLink link:presentationLink 995469 - Disclosure - Note 11 - Segment Information (Tables) link:calculationLink link:definitionLink link:presentationLink 995470 - Disclosure - Note 2 - Revenue (Details Textual) link:calculationLink link:definitionLink link:presentationLink 995471 - Disclosure - Note 3 - Leases (Details Textual) link:calculationLink link:definitionLink link:presentationLink 995472 - Disclosure - Note 3 - Leases - Lease Costs (Details) link:calculationLink link:definitionLink link:presentationLink 995473 - Disclosure - Note 3 - Leases - Reconciliation of the Undiscounted Cash Flows From Operating Leases (Details) link:calculationLink link:definitionLink link:presentationLink 995474 - Disclosure - Note 4 - Other Assets - Summary of Prepaid Expenses and Other Current Assets (Details) link:calculationLink link:definitionLink link:presentationLink 995475 - Disclosure - Note 4 - Other Assets - Other Noncurrent Assets (Details) link:calculationLink link:definitionLink link:presentationLink 995476 - Disclosure - Note 5 - Accrued Expenses - Summary of Accrued Expenses (Details) link:calculationLink link:definitionLink link:presentationLink 995477 - Disclosure - Note 6 - Stock-based Compensation (Details Textual) link:calculationLink link:definitionLink link:presentationLink 995478 - Disclosure - Note 6 - Stock-based Compensation - Activity for Time-based and Performance-based Restricted Stock (Details) link:calculationLink link:definitionLink link:presentationLink 995479 - Disclosure - Note 6 - Stock-based Compensation - Outstanding Performance Shares (Details) link:calculationLink link:definitionLink link:presentationLink 995480 - Disclosure - Note 7 - Income Taxes (Details Textual) link:calculationLink link:definitionLink link:presentationLink 995481 - Disclosure - Note 8 - Stockholders' Equity (Details Textual) link:calculationLink link:definitionLink link:presentationLink 995482 - Disclosure - Note 8 - Stockholders' Equity - Changes in Stockholders' Equity (Details) link:calculationLink link:definitionLink link:presentationLink 995483 - Disclosure - Note 9 - Income per Share (Details Textual) link:calculationLink link:definitionLink link:presentationLink 995484 - Disclosure - Note 9 - Income per Share - Computation Basic and Diluted Earnings per Common Share (Details) link:calculationLink link:definitionLink link:presentationLink 995485 - Disclosure - Note 10 - Comprehensive Income (Details Textual) link:calculationLink link:definitionLink link:presentationLink 995486 - Disclosure - Note 11 - Segment Information (Details Textual) link:calculationLink link:definitionLink link:presentationLink 995487 - Disclosure - Note 11 - Segment Information - Financial Information for the Company's Reportable Segments (Details) link:calculationLink link:definitionLink link:presentationLink 995488 - Disclosure - Note 11 - Segment Information - Sales to External Customers and Long-lived Assets by Geographic Area (Details) link:calculationLink link:definitionLink link:presentationLink 995489 - Disclosure - Note 12 - Contingencies (Details Textual) link:calculationLink link:definitionLink link:presentationLink