Basis Of Presentation (Policy)	9 Months Ended
Basis Of Presentation (Policy)	Sep. 30, 2016
Basis Of Presentation [Abstract]
Principles Of Consolidation	Principles of Consolidation The accompanying unaudited condensed consolidated financial statements have been prepared in accordance with United States generally accepted accounting principles (“GAAP”) for interim financial information and with the instructions to Form 10-Q and Rule 10-01 of Regulation S-X of the Securities and Exchange Commission (“SEC”) Guidelines, Rules and Regulations (“Regulation S-X”) and, in the opinion of management, reflect all normal recurring adjustments necessary for a fair presentation of results for the unaudited interim periods presented. Certain information and footnote disclosures normally included in financial statements prepared in accordance with GAAP have been condensed or omitted. The results of operations for the interim period are not necessarily indicative of the results to be obtained for the full fiscal year. All material intercompany accounts and transactions have been eliminated in the unaudited condensed consolidated financial statements.
Reclassifications	Reclassifications Certain reclassifications have been made to the prior period financial statements to conform to the current period presentation.
Accounting Estimates	Accounting Estimates The preparation of financial statements in conformity with GAAP requires management to make estimates and assumptions that affect the amounts reported in the consolidated financial statements and accompanying notes. The Company bases its estimates on historical experience, current business factors and various other assumptions that the Company believes are necessary to consider in order to form a basis for making judgments about the carrying values of assets and liabilities, the recorded amounts of revenue and expenses and disclosure of contingent assets and liabilities. The Company is subject to uncertainties such as the impact of future events, economic, environmental and political factors and changes in the Company’s business environment; therefore, actual results could differ materially from these estimates. Accordingly, the accounting estimates used in the preparation of the Company’s financial statements will change as new events occur, as more experience is acquired, as additional information is obtained and as the Company’s operating environment changes. Changes in estimates are made when circumstances warrant. Such changes in estimates and refinements in estimation methodologies are reflected in the reported results of operations; and if material, the effects of changes in estimates are disclosed in the notes to the consolidated financial statements. Estimates and assumptions by management affect: the allowance for doubtful accounts; the fair value assigned to assets acquired and liabilities assumed in business combinations; tax receivable agreement obligations; the fair value of interest rate swap obligations; contingent consideration; loss accruals; the carrying value of long-lived assets (including goodwill and intangible assets); the amortization period of long-lived assets (excluding goodwill); the carrying value, capitalization and amortization of software development costs; the provision and benefit for income taxes and related deferred tax accounts; certain accrued expenses; revenue recognition; contingencies; and the value attributed to equity awards.
Recent Accounting Pronouncements	Recent Accounting Pronouncements In May 2014, the Financial Accounting Standards Board (“FASB”) issued Accounting Standards Update (“ASU”) No. 2014-09, which replaces most prior general and industry specific revenue recognition guidance with a principles-based comprehensive revenue recognition framework. Under this revised framework, a company will recognize revenue to depict the transfer of promised goods and services to customers in an amount that reflects the consideration to which the company expects to be entitled in exchange for those goods and services. This update is effective for fiscal years and interim periods beginning in those years after December 15, 2017. Early adoption is permitted in years beginning after December 15, 2016. Upon adoption, a company may elect to either retrospectively restate each prior reporting period or reflect the cumulative effect of initially applying the update with an adjustment to retained earnings at the date of adoption. While the Company cannot yet determine the transition method or the effect the adoption of this update will have on its financial statements, the Company believes that significant changes to its accounting policies, estimation processes, internal controls and information systems, as well as significant implementation costs prior to adoption, will be necessary to comply with this update. Such changes are expected to be necessary to accumulate information and data required to estimate the transaction prices in our contracts, and to allocate such transaction prices to the specific performance obligations in our contracts, as a result of variability from volume-based pricing, price increases, contingent fees, service level agreements and other arrangements. In January 2016, the Company adopted FASB ASU No. 2014-12, which clarifies, in the context of share-based payment awards, that a performance target that affects vesting and could be achieved after the requisite service period has been rendered should be treated as a performance condition. Prior to this update, because there was no explicit guidance, there was diversity in practice among companies. The adoption of this update had no material effect on the Company’s consolidated financial statements. In February 2016, the FASB issued ASU No. 2016-02, which generally requires that all lease obligations be recognized on the balance sheet at the present value of the remaining lease payments with a corresponding lease asset. This update is scheduled to be effective for fiscal years and interim periods beginning in those years after December 15, 2018. The Company is currently assessing the potential effects this update may have on its consolidated financial statements. In March 2016, the FASB issued ASU No. 2016-09, which generally requires that all income tax effects of share-based payment awards be recognized in the statement of operations when the awards vest or are settled. It also will allow an employer to repurchase more of an employee’s shares than it can today for tax withholding purposes without triggering liability accounting and to make a policy election to account for forfeitures as they occur. This update is scheduled to be effective for fiscal years and interim periods beginning in those years after December 15, 2016, with early adoption permitted. The Company is currently assessing the potential effects this update may have on its consolidated financial statements. In June 2016, the FASB issued ASU No. 2016-13, which requires that a financial asset (or group of financial assets) measured at amortized cost be presented at the net amount expected to be collected based on relevant information about past events, including historical experience, current conditions and reasonable and supportable forecasts that affect the collectability of the reported amount. This update is scheduled to be effective for fiscal years and interim periods beginning in those years after December 15, 2019, with early adoption permitted beginning with fiscal years beginning after December 15, 2018. The Company is currently assessing the potential effects this update may have on its consolidated financial statements. In August 2016, the Company adopted FASB ASU No. 2016-15, which specifies the treatment within the statement of cash flows of eight specific matters including the treatment of debt prepayment or debt extinguishment costs and contingent consideration payments made after a business combination, among other matters. The adoption of this update had no material effect on the Company’s consolidated financial statements.