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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 Purchase of Investment (Details) link:presentationLink link:calculationLink link:definitionLink 2406403 - Disclosure - Reportable Segment Information (Details) link:presentationLink link:calculationLink link:definitionLink 2407404 - Disclosure - Treasury Stock (Details) link:presentationLink link:calculationLink link:definitionLink 2108102 - Disclosure - Revenue and Deferred Costs link:presentationLink link:calculationLink link:definitionLink 2309302 - Disclosure - Revenue from Contract with Customer (Tables) link:presentationLink link:calculationLink link:definitionLink 2410405 - Disclosure - Revenue and Deferred Costs Narrative (Details) link:presentationLink link:calculationLink link:definitionLink 2410405 - Disclosure - Revenue and Deferred Costs Narrative (Details) link:presentationLink link:calculationLink link:definitionLink 2411406 - Disclosure - Disaggregation of Revenue (Details) link:presentationLink link:calculationLink link:definitionLink 2412407 - Disclosure - Revenue and Deferred Costs Contract Balances (Details) link:presentationLink link:calculationLink link:definitionLink 2413408 - Disclosure - Revenue and Deferred Costs Contract Costs (Details) link:presentationLink link:calculationLink link:definitionLink 2114103 - Disclosure - Fair Value Measures and Disclosures link:presentationLink link:calculationLink link:definitionLink 2315303 - Disclosure - Fair Value Measures and Disclosures (Tables) link:presentationLink link:calculationLink link:definitionLink 2416409 - Disclosure - Fair Value Measures and Disclosures (Details) link:presentationLink link:calculationLink link:definitionLink 2217202 - Disclosure - Fair Value Measures and Disclosures (Policies) link:presentationLink link:calculationLink link:definitionLink 2118104 - Disclosure - Leases link:presentationLink link:calculationLink link:definitionLink 2219203 - Disclosure - Leases (Policies) link:presentationLink link:calculationLink link:definitionLink 2320304 - Disclosure - Leases (Tables) link:presentationLink link:calculationLink link:definitionLink 2421410 - Disclosure - Leases (Details) link:presentationLink link:calculationLink link:definitionLink 2422411 - Disclosure - Leases Lease Maturity (Details) link:presentationLink link:calculationLink link:definitionLink 2123105 - Disclosure - Property and Equipment (Text Block) link:presentationLink link:calculationLink link:definitionLink 2324305 - Disclosure - Property and Equipment (Tables) link:presentationLink link:calculationLink link:definitionLink 2425412 - Disclosure - Property and Equipment (Details) link:presentationLink link:calculationLink link:definitionLink 2126106 - Disclosure - Other Assets (Text Block) link:presentationLink link:calculationLink link:definitionLink 2327306 - Disclosure - Other Assets (Tables) link:presentationLink link:calculationLink link:definitionLink 2428413 - Disclosure - Other Assets Goodwill (Details) link:presentationLink link:calculationLink link:definitionLink 2429414 - Disclosure - Other Assets Other Intangible Assets (Details) link:presentationLink link:calculationLink link:definitionLink 2430415 - Disclosure - Other Assets Future Amortization Expense (Details) link:presentationLink link:calculationLink link:definitionLink 2131107 - Disclosure - Debt (Text Block) link:presentationLink link:calculationLink link:definitionLink 2432416 - Disclosure - Debt Narrative (Details) link:presentationLink link:calculationLink link:definitionLink 2133108 - Disclosure - Income Taxes (Text Block) link:presentationLink link:calculationLink link:definitionLink 2334307 - Disclosure - Income Taxes Income Taxes (Tables) link:presentationLink link:calculationLink link:definitionLink 2435417 - Disclosure - Provision For Income Taxes (Details) link:presentationLink link:calculationLink link:definitionLink 2436418 - Disclosure - Deferred Tax Liability (Details) link:presentationLink link:calculationLink link:definitionLink 2437419 - Disclosure - Effective Tax Rate Reconciliation (Details) link:presentationLink link:calculationLink link:definitionLink 2438420 - Disclosure - Income Taxes Narrative (Details) link:presentationLink link:calculationLink link:definitionLink 2439421 - Disclosure - Unrecognized Tax Benefits (Details) link:presentationLink link:calculationLink link:definitionLink 2140109 - Disclosure - Industry and Supplier Concentrations (Text Block) link:presentationLink link:calculationLink link:definitionLink 2441422 - Disclosure - Industry and Supplier Concentrations Concentration Risk (Details) link:presentationLink link:calculationLink link:definitionLink 2142110 - Disclosure - Stock Based Compensation (Text Block) link:presentationLink link:calculationLink link:definitionLink 2343308 - Disclosure - Stock Based Compensation (Tables) link:presentationLink link:calculationLink link:definitionLink 2444423 - Disclosure - Stock Based Compensation Narrative (Details) link:presentationLink link:calculationLink link:definitionLink 2445424 - Disclosure - Stock Options (Details) link:presentationLink link:calculationLink link:definitionLink 2446425 - Disclosure - Restricted Stock Share Awards (Details) link:presentationLink link:calculationLink link:definitionLink 2447426 - Disclosure - Restricted Stock Unit Awards (Details) link:presentationLink link:calculationLink link:definitionLink 2448427 - Disclosure - RSU Measurement Date Assumptions (Details) link:presentationLink link:calculationLink link:definitionLink 2149111 - Disclosure - Earnings Per Share (Text Block) link:presentationLink link:calculationLink link:definitionLink 2350309 - Disclosure - Earnings Per Share (Tables) link:presentationLink link:calculationLink link:definitionLink 2451428 - Disclosure - Earnings Per Share (Details) link:presentationLink link:calculationLink link:definitionLink 2152112 - Disclosure - Employee Benefit Plans (Text Block) link:presentationLink link:calculationLink link:definitionLink 2453429 - Disclosure - Employee Benefits Plans Employee Stock Purchase Plan (Details) link:presentationLink link:calculationLink link:definitionLink 2454430 - Disclosure - Employee Benefits Plans 401(k) (Details) link:presentationLink link:calculationLink link:definitionLink 2155113 - Disclosure - Business Acquisitions (Text Block) link:presentationLink link:calculationLink link:definitionLink 2456431 - Disclosure - Business Acquisitions (Details) link:presentationLink link:calculationLink link:definitionLink 2157114 - Disclosure - Reportable Segment Information (Text Block) link:presentationLink link:calculationLink link:definitionLink 2358310 - Disclosure - Reportable Segment Information (Tables) link:presentationLink link:calculationLink link:definitionLink 2459432 - Disclosure - Reportable Segment Information Narrative (Details) link:presentationLink link:calculationLink link:definitionLink 2460433 - Disclosure - Reportable Segment Information Reconciliation of Operating Profit by Segment to Consolidated (Details) link:presentationLink link:calculationLink link:definitionLink 2161115 - Disclosure - Subsequent Events (Text Block) link:presentationLink link:calculationLink link:definitionLink 2462434 - Disclosure - Subsequent Events (Details) link:presentationLink link:calculationLink link:definitionLink