0001001 - Document - Cover Page link:presentationLink link:calculationLink link:definitionLink 1001002 - Statement - CONDENSED CONSOLIDATED BALANCE SHEETS link:presentationLink link:calculationLink link:definitionLink 1002003 - Statement - CONDENSED CONSOLIDATED BALANCE SHEETS PARENTHETICAL link:presentationLink link:calculationLink link:definitionLink 1003004 - Statement - CONDENSED CONSOLIDATED STATEMENTS OF INCOME link:presentationLink link:calculationLink link:definitionLink 1004005 - Statement - CONDENSED CONSOLIDATED STATEMENTS OF STOCKHOLDERS' EQUITY Statement link:presentationLink link:calculationLink link:definitionLink 1005006 - Statement - CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS link:presentationLink link:calculationLink link:definitionLink 2101101 - Disclosure - Nature of Operations and Summary of Significant Accounting Policies (Text Block) link:presentationLink link:calculationLink link:definitionLink 2202201 - Disclosure - Nature of Operations and Summary of Significant Accounting Policies (Policies) link:presentationLink link:calculationLink link:definitionLink 2303301 - Disclosure - Nature of Operations and Summary of Significant Accounting Policies- Loss on Disposal of Assets, net (Tables) link:presentationLink link:calculationLink link:definitionLink 2404401 - Disclosure - Nature of Operations and Summary of Significant Accounting Policies Allowance for Credit Losses (Details) link:presentationLink link:calculationLink link:definitionLink 2405402 - Disclosure - Nature of Operations and Summary of Significant Accounting Policies Property and Equipment (Details) link:presentationLink link:calculationLink link:definitionLink 2406403 - Disclosure - Nature of Operations and Summary of Significant Accounting Policies Intangible Assets (Details) link:presentationLink link:calculationLink link:definitionLink 2407404 - Disclosure - Nature of Operations and Summary of Significant Accounting Policies Purchase of Investments (Details) link:presentationLink link:calculationLink link:definitionLink 2408405 - Disclosure - Nature of Operations and Summary of Significant Accounting Policies Treasury Stock (Details) link:presentationLink link:calculationLink link:definitionLink 2109102 - Disclosure - Recent Accounting Pronouncements Recent Accounting Pronouncements (Text Block) link:presentationLink link:calculationLink link:definitionLink 2110103 - Disclosure - Revenue and Deferred Costs Revenue and Deferred Costs (Notes) link:presentationLink link:calculationLink link:definitionLink 2311302 - Disclosure - Revenue and Deferred Costs Revenue and Deferred Costs (Tables) link:presentationLink link:calculationLink link:definitionLink 2412406 - Disclosure - Revenue and Deferred Costs Disaggregation of Revenue (Details) link:presentationLink link:calculationLink link:definitionLink 2413407 - Disclosure - Revenue and Deferred Costs Contract Balances (Details) link:presentationLink link:calculationLink link:definitionLink 2414408 - Disclosure - Revenue and Deferred Costs Revenue Recognition Narrative (Details) link:presentationLink link:calculationLink link:definitionLink 2414408 - Disclosure - Revenue and Deferred Costs Revenue Recognition Narrative (Details) link:presentationLink link:calculationLink link:definitionLink 2415409 - Disclosure - Revenue and Deferred Costs Contract Costs (Details) link:presentationLink link:calculationLink link:definitionLink 2116104 - Disclosure - Fair Value Measures and Disclosures link:presentationLink link:calculationLink link:definitionLink 2217202 - Disclosure - Fair Value Measures and Disclosures (Policies) link:presentationLink link:calculationLink link:definitionLink 2318303 - Disclosure - Fair Value Measures and Disclosures (Tables) link:presentationLink link:calculationLink link:definitionLink 2419410 - Disclosure - Fair Value Measures and Disclosures (Details) link:presentationLink link:calculationLink link:definitionLink 2120105 - Disclosure - Leases Leases (Notes) link:presentationLink link:calculationLink link:definitionLink 2221203 - Disclosure - Leases Leases (Policies) link:presentationLink link:calculationLink link:definitionLink 2322304 - Disclosure - Leases Leases (Tables) link:presentationLink link:calculationLink link:definitionLink 2423411 - Disclosure - Leases Leases (Details) link:presentationLink link:calculationLink link:definitionLink 2424412 - Disclosure - Leases Lease Maturity (Details) link:presentationLink link:calculationLink link:definitionLink 2424412 - Disclosure - Leases Lease Maturity (Details) link:presentationLink link:calculationLink link:definitionLink 2125106 - Disclosure - Debt (Text Block) link:presentationLink link:calculationLink link:definitionLink 2426413 - Disclosure - Debt Narrative (Details) link:presentationLink link:calculationLink link:definitionLink 2127107 - Disclosure - Income Taxes (Text Block) link:presentationLink link:calculationLink link:definitionLink 2428414 - Disclosure - Income Taxes Narrative (Details) link:presentationLink link:calculationLink link:definitionLink 2129108 - Disclosure - Stock Based Compensation (Text Block) link:presentationLink link:calculationLink link:definitionLink 2330305 - Disclosure - Stock Based Compensation (Tables) link:presentationLink link:calculationLink link:definitionLink 2431415 - Disclosure - Stock Based Compensation Narrative (Details) link:presentationLink link:calculationLink link:definitionLink 2432416 - Disclosure - Stock Based Compensation Stock Options (Details) link:presentationLink link:calculationLink link:definitionLink 2433417 - Disclosure - Stock Based Compensation Restricted Stock Unit Awards (Details) link:presentationLink link:calculationLink link:definitionLink 2434418 - Disclosure - Stock Based Compensation RSU Measurement Date Assumptions (Details) link:presentationLink link:calculationLink link:definitionLink 2135109 - Disclosure - Earnings Per Share Earnings Per Share (Text Block) link:presentationLink link:calculationLink link:definitionLink 2336306 - Disclosure - Earnings Per Share Earnings Per Share (Tables) link:presentationLink link:calculationLink link:definitionLink 2437419 - Disclosure - Earnings Per Share Earnings Per Share (Details) link:presentationLink link:calculationLink link:definitionLink 2138110 - Disclosure - Reportable Segment Information (Text Block) link:presentationLink link:calculationLink link:definitionLink 2339307 - Disclosure - Reportable Segment Information (Tables) link:presentationLink link:calculationLink link:definitionLink 2440420 - Disclosure - Reportable Segment Information Narrative (Details) link:presentationLink link:calculationLink link:definitionLink 2441421 - Disclosure - Reportable Segment Information Reconciliation of Operating Profit by Segment to Consolidated (Details) link:presentationLink link:calculationLink link:definitionLink 2142111 - Disclosure - Subsequent Events Subsequent Events (Text Block) link:presentationLink link:calculationLink link:definitionLink 2443422 - Disclosure - Subsequent Events Subsequent Events (Details) link:presentationLink link:calculationLink link:definitionLink