Basis of Presentation and Summary of Significant Accounting Policies (Policies)	9 Months Ended
	Sep. 30, 2017
Accounting Policies [Abstract]
Use of Estimates	Use of Estimates The preparation of condensed consolidated financial statements in conformity with GAAP requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities and disclosures of contingent assets and liabilities at the date of the condensed consolidated financial statements and the reported amounts of revenue and expenses during the reporting period. Actual results could differ materially from these estimates under different assumptions or circumstances.
Cash and Cash Equivalents	Cash and Cash Equivalents The Company considers all short-term highly liquid investments with an original maturity of three months or less to be cash equivalents. Cash equivalents are carried at fair value. Refer to Note 4—Fair Value Measurements for additional information regarding the fair value of cash equivalents.
Allowance for Doubtful Accounts	Allowance for Doubtful Accounts The allowance for doubtful accounts was $6.0 million and $2.6 million as of September 30, 2017 and December 31, 2016, respectively, and the increase related primarily to specific client reserves.
Recent Accounting Pronouncements	Recent Accounting Pronouncements In May 2014, the Financial Accounting Standards Board (“FASB”) issued Accounting Standards Update (“ASU”) No. 2014-09, Revenue from Contracts with Customers (Topic 606), which amends the existing accounting standards for revenue recognition. Under ASU 2014-09, a company will recognize revenue when it transfers promised goods or services to customers in an amount that reflects the consideration to which it expects to be entitled in exchange for those goods or services. Additionally, the guidance requires improved disclosures to help users of financial statements better understand the nature, amount, timing, and uncertainty of revenue and cash flows arising from contracts with customers. In August 2015, the FASB approved the deferral of the new standard by one year. In 2016, the FASB issued additional amendments to the new revenue guidance. The new guidance is effective for annual reporting periods (including interim periods within those periods) beginning after December 15, 2017. The guidance permits the use of either the retrospective or cumulative effect transition method. The Company does not expect that the adoption of this guidance will have a material impact on its consolidated statements of operations, however the Company will be required to include additional disclosures in the notes to the consolidated financial statements. In February 2016, the FASB issued ASU No. 2016-02, Leases, which requires an entity to recognize right-of-use assets and lease liabilities on its balance sheet and disclose key information about leasing arrangements. The guidance offers specific accounting guidance for a lessee, lessor, and sale and leaseback transactions. Lessees and lessors are required to disclose qualitative and quantitative information about leasing arrangements to enable a user of the financial statements to assess the amount, timing and uncertainty of cash flows arising from leases. Leases will be classified as either finance or operating, with the classification affecting the pattern of expense recognition in the income statement. The guidance is effective for annual reporting periods beginning after December 15, 2018, including interim periods within that reporting period, and requires a modified retrospective adoption, with early adoption permitted. Although the Company is currently evaluating the impact of this guidance on its consolidated financial statements, the Company expects that most of its operating lease commitments will be recognized as operating lease liabilities and right-of-use assets upon adoption of the new guidance. In June 2016, the FASB issued ASU No. 2016-13, Financial Instruments-Credit Losses (Topic 326): Measurement of Credit Losses on Financial Instruments, which is intended to provide more decision-useful information about expected credit losses on financial instruments and other commitments to extend credit held by a reporting entity at each reporting date. ASU 2016-13 revises the impairment model to utilize an expected loss methodology in place of the currently used incurred loss methodology, which will result in more timely recognition of losses on financial instruments, including, but not limited to, available for sale debt securities and accounts receivable. The Company is required to adopt this standard starting in the first quarter of fiscal year 2021. Early adoption is permitted. The Company is currently evaluating the impact of this guidance on its consolidated financial statements. In August 2016, the FASB issued ASU No. 2016-15, Statement of Cash Flows (Topic 230), Classification of Certain Cash Receipts and Cash Payments, which addresses eight specific cash flow issues with the objective of reducing the existing diversity in practice. ASU 2016-15 is effective for fiscal years beginning after December 15, 2017, and interim periods within those fiscal years. Early adoption is permitted, including adoption in an interim period. If adopted in an interim period, any adjustments should be reflected as of the beginning of the fiscal year that includes such interim period. The adoption of ASU 2016-15 should be applied using a retrospective transition method to each period presented, unless impracticable to do so. The Company does not expect that the adoption of this guidance will have a material impact on its consolidated statement of cash flows. In May 2017, the FASB issued ASU No. 2017-09, Compensation—Stock Compensation: Scope of Modification Accounting, which provides guidance on the types of changes to the terms or conditions of a share-based payment award to which an entity would be required to apply modification accounting in FASB Accounting Standards Codification Topic 718, Compensation—Stock Compensation. The adoption of ASU 2017-09, is effective for annual periods beginning after December 15, 2017. The Company does not expect that the adoption of this guidance will have a material impact on its consolidated financial statements.