0000001 - Document - Cover Page link:presentationLink link:calculationLink link:definitionLink 0000002 - Statement - CONDENSED CONSOLIDATED BALANCE SHEETS link:presentationLink link:calculationLink link:definitionLink 0000003 - Statement - CONDENSED CONSOLIDATED STATEMENTS OF INCOME link:presentationLink link:calculationLink link:definitionLink 0000004 - Statement - CONDENSED CONSOLIDATED STATEMENTS OF STOCKHOLDERS' EQUITY Statement link:presentationLink link:calculationLink link:definitionLink 0000005 - Statement - CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS link:presentationLink link:calculationLink link:definitionLink 0000006 - Disclosure - Nature of Operations and Summary of Significant Accounting Policies (Text Block) link:presentationLink link:calculationLink link:definitionLink 0000007 - Disclosure - Recent Accounting Pronouncements Recent Accounting Pronouncements (Text Block) link:presentationLink link:calculationLink link:definitionLink 0000008 - Disclosure - Revenue and Deferred Costs Revenue and Deferred Costs (Notes) link:presentationLink link:calculationLink link:definitionLink 0000009 - Disclosure - Fair Value Measures and Disclosures link:presentationLink link:calculationLink link:definitionLink 0000010 - Disclosure - Leases Leases (Notes) link:presentationLink link:calculationLink link:definitionLink 0000011 - Disclosure - Debt (Text Block) link:presentationLink link:calculationLink link:definitionLink 0000012 - Disclosure - Income Taxes (Text Block) link:presentationLink link:calculationLink link:definitionLink 0000013 - Disclosure - Stock Based Compensation (Text Block) link:presentationLink link:calculationLink link:definitionLink 0000014 - Disclosure - Earnings Per Share Earnings Per Share (Text Block) link:presentationLink link:calculationLink link:definitionLink 0000015 - Disclosure - Business Acquisitions (Text Block) link:presentationLink link:calculationLink link:definitionLink 0000016 - Disclosure - Reportable Segment Information (Text Block) link:presentationLink link:calculationLink link:definitionLink 0000017 - Disclosure - Subsequent Events Subsequent Events (Text Block) link:presentationLink link:calculationLink link:definitionLink 0000018 - Disclosure - Nature of Operations and Summary of Significant Accounting Policies (Policies) link:presentationLink link:calculationLink link:definitionLink 0000019 - Disclosure - Fair Value Measures and Disclosures (Policies) link:presentationLink link:calculationLink link:definitionLink 0000020 - Disclosure - Leases Leases (Policies) link:presentationLink link:calculationLink link:definitionLink 0000021 - Disclosure - Nature of Operations and Summary of Significant Accounting Policies- Loss on Disposal of Assets, net (Tables) link:presentationLink link:calculationLink link:definitionLink 0000022 - Disclosure - Revenue and Deferred Costs Revenue and Deferred Costs (Tables) link:presentationLink link:calculationLink link:definitionLink 0000023 - Disclosure - Fair Value Measures and Disclosures (Tables) link:presentationLink link:calculationLink link:definitionLink 0000024 - Disclosure - Leases Leases (Tables) link:presentationLink link:calculationLink link:definitionLink 0000025 - Disclosure - Stock Based Compensation (Tables) link:presentationLink link:calculationLink link:definitionLink 0000026 - Disclosure - Earnings Per Share Earnings Per Share (Tables) link:presentationLink link:calculationLink link:definitionLink 0000027 - Disclosure - Business Acquisitions (Tables) link:presentationLink link:calculationLink link:definitionLink 0000028 - Disclosure - Reportable Segment Information (Tables) link:presentationLink link:calculationLink link:definitionLink 0000029 - Disclosure - Nature of Operations and Summary of Significant Accounting Policies (Details) link:presentationLink link:calculationLink link:definitionLink 0000030 - Disclosure - Nature of Operations and Summary of Significant Accounting Policies Allowance for Credit Losses (Details) link:presentationLink link:calculationLink link:definitionLink 0000031 - Disclosure - Nature of Operations and Summary of Significant Accounting Policies Property and Equipment (Details) link:presentationLink link:calculationLink link:definitionLink 0000032 - Disclosure - Nature of Operations and Summary of Significant Accounting Policies Intangible Assets (Details) link:presentationLink link:calculationLink link:definitionLink 0000033 - Disclosure - Nature of Operations and Summary of Significant Accounting Policies Purchase of Investments (Details) link:presentationLink link:calculationLink link:definitionLink 0000034 - Disclosure - Nature of Operations and Summary of Significant Accounting Policies Treasury Stock (Details) link:presentationLink link:calculationLink link:definitionLink 0000035 - Disclosure - Revenue and Deferred Costs Disaggregation of Revenue (Details) link:presentationLink link:calculationLink link:definitionLink 0000036 - Disclosure - Revenue and Deferred Costs Contract Balances (Details) link:presentationLink link:calculationLink link:definitionLink 0000037 - Disclosure - Revenue and Deferred Costs Revenue Recognition Narrative (Details) link:presentationLink link:calculationLink link:definitionLink 0000037 - Disclosure - Revenue and Deferred Costs Revenue Recognition Narrative (Details) link:presentationLink link:calculationLink link:definitionLink 0000038 - Disclosure - Revenue and Deferred Costs Contract Costs (Details) link:presentationLink link:calculationLink link:definitionLink 0000039 - Disclosure - Fair Value Measures and Disclosures (Details) link:presentationLink link:calculationLink link:definitionLink 0000040 - Disclosure - Leases Leases (Details) link:presentationLink link:calculationLink link:definitionLink 0000041 - Disclosure - Leases Lease Maturity (Details) link:presentationLink link:calculationLink link:definitionLink 0000041 - Disclosure - Leases Lease Maturity (Details) link:presentationLink link:calculationLink link:definitionLink 0000042 - Disclosure - Debt Narrative (Details) link:presentationLink link:calculationLink link:definitionLink 0000043 - Disclosure - Income Taxes Narrative (Details) link:presentationLink link:calculationLink link:definitionLink 0000044 - Disclosure - Stock Based Compensation Narrative (Details) link:presentationLink link:calculationLink link:definitionLink 0000045 - Disclosure - Stock Based Compensation Stock Options (Details) link:presentationLink link:calculationLink link:definitionLink 0000046 - Disclosure - Stock Based Compensation Restricted Stock Unit Awards (Details) link:presentationLink link:calculationLink link:definitionLink 0000047 - Disclosure - Stock Based Compensation RSU Measurement Date Assumptions (Details) link:presentationLink link:calculationLink link:definitionLink 0000048 - Disclosure - Earnings Per Share Earnings Per Share (Details) link:presentationLink link:calculationLink link:definitionLink 0000049 - Disclosure - Business Acquisitions (Details) link:presentationLink link:calculationLink link:definitionLink 0000050 - Disclosure - Reportable Segment Information Narrative (Details) link:presentationLink link:calculationLink link:definitionLink 0000051 - Disclosure - Reportable Segment Information Reconciliation of Operating Profit by Segment to Consolidated (Details) link:presentationLink link:calculationLink link:definitionLink 0000052 - Disclosure - Subsequent Events Subsequent Events (Details) link:presentationLink link:calculationLink link:definitionLink