000 - Document - Document And Entity Information link:calculationLink link:definitionLink link:presentationLink 001 - Statement - Consolidated Balance Sheets (Current Period Unaudited) link:calculationLink link:definitionLink link:presentationLink 002 - Statement - Consolidated Balance Sheets (Current Period Unaudited) (Parentheticals) link:calculationLink link:definitionLink link:presentationLink 003 - Statement - Consolidated Statements of Income (Unaudited) link:calculationLink link:definitionLink link:presentationLink 004 - Statement - Consolidated Statements of Comprehensive Income (Unaudited) link:calculationLink link:definitionLink link:presentationLink 005 - Statement - Consolidated Statements of Shareholders' Equity (Unaudited) link:calculationLink link:definitionLink link:presentationLink 006 - Statement - Consolidated Statements of Cash Flows (Unaudited) link:calculationLink link:definitionLink link:presentationLink 007 - Disclosure - Note 1 - Principles of Consolidation and Basis of Presentation link:calculationLink link:definitionLink link:presentationLink 008 - Disclosure - Note 2 - Commitments and Contingencies link:calculationLink link:definitionLink link:presentationLink 009 - Disclosure - Note 3 - Earnings Per Share link:calculationLink link:definitionLink link:presentationLink 010 - Disclosure - Note 4 - Stock Options and Restricted Stock Awards link:calculationLink link:definitionLink link:presentationLink 011 - Disclosure - Note 5 - Financial Instruments and Fair Value link:calculationLink link:definitionLink link:presentationLink 012 - Disclosure - Note 6 - Segment Information link:calculationLink link:definitionLink link:presentationLink 013 - Disclosure - Note 7 - Income Taxes link:calculationLink link:definitionLink link:presentationLink 014 - Disclosure - Note 8 - Revenue link:calculationLink link:definitionLink link:presentationLink 015 - Disclosure - Note 9 - Leases link:calculationLink link:definitionLink link:presentationLink 016 - Disclosure - Note 10 - Accumulated Other Comprehensive Income link:calculationLink link:definitionLink link:presentationLink 017 - Disclosure - Note 11 - Accounts Receivable and Allowance for Credit Losses link:calculationLink link:definitionLink link:presentationLink 018 - Disclosure - Note 12 - Acquisitions link:calculationLink link:definitionLink link:presentationLink 995464 - Disclosure - Note 3 - Earnings Per Share (Tables) link:calculationLink link:definitionLink link:presentationLink 995465 - Disclosure - Note 6 - Segment Information (Tables) link:calculationLink link:definitionLink link:presentationLink 995466 - Disclosure - Note 8 - Revenue (Tables) link:calculationLink link:definitionLink link:presentationLink 995467 - Disclosure - Note 9 - Leases (Tables) link:calculationLink link:definitionLink link:presentationLink 995468 - Disclosure - Note 10 - Accumulated Other Comprehensive Income (Tables) link:calculationLink link:definitionLink link:presentationLink 995469 - Disclosure - Note 11 - Accounts Receivable and Allowance for Credit Losses (Tables) link:calculationLink link:definitionLink link:presentationLink 995470 - Disclosure - Note 1 - Principles of Consolidation and Basis of Presentation (Details Textual) link:calculationLink link:definitionLink link:presentationLink 995471 - Disclosure - Note 3 - Earnings Per Share - Earnings Per Share Calculation (Details) link:calculationLink link:definitionLink link:presentationLink 995472 - Disclosure - Note 3 - Earnings Per Share - Anti-dilutive Securities (Details) link:calculationLink link:definitionLink link:presentationLink 995473 - Disclosure - Note 4 - Stock Options and Restricted Stock Awards (Details Textual) link:calculationLink link:definitionLink link:presentationLink 995474 - Disclosure - Note 6 - Segment Information (Details Textual) link:calculationLink link:definitionLink link:presentationLink 995475 - Disclosure - Note 6 - Segment Information - Segment Reporting Information (Details) link:calculationLink link:definitionLink link:presentationLink 995476 - Disclosure - Note 7 - Income Taxes (Details Textual) link:calculationLink link:definitionLink link:presentationLink 995477 - Disclosure - Note 8 - Revenue (Details Textual) link:calculationLink link:definitionLink link:presentationLink 995478 - Disclosure - Note 8 - Revenue - Disaggregated Revenue by Revenue Source (Details) link:calculationLink link:definitionLink link:presentationLink 995479 - Disclosure - Note 9 - Leases (Details Textual) link:calculationLink link:definitionLink link:presentationLink 995480 - Disclosure - Note 9 - Leases - Rental Income (Details) link:calculationLink link:definitionLink link:presentationLink 995481 - Disclosure - Note 10 - Accumulated Other Comprehensive Income - Components of Accumulated Other Comprehensive Income (Details) link:calculationLink link:definitionLink link:presentationLink 995482 - Disclosure - Note 11 - Accounts Receivable and Allowance for Credit Losses - Allowance for Accounts Receivable (Details) link:calculationLink link:definitionLink link:presentationLink 995483 - Disclosure - Note 12 - Acquisitions (Details Textual) link:calculationLink link:definitionLink link:presentationLink