Entity Central Index Key Income tax reconciliation state and local tax credits. Document and Entity Information [Abstract] Document And Entity Information [Abstract] Document Type Document Type Amendment Flag Amendment Flag Document Period End Date Document Period End Date Document Fiscal Year Focus Document Fiscal Year Focus Document Fiscal Period Focus Document Fiscal Period Focus Trading Symbol Trading Symbol Entity Registrant Name Entity Registrant Name Entity Central Index Key Current Fiscal Year End Date Current Fiscal Year End Date Entity Well-known Seasoned Issuer Entity Well Known Seasoned Issuer Entity Current Reporting Status Entity Current Reporting Status Entity Voluntary Filers Entity Voluntary Filers Entity Filer Category Entity Filer Category Entity Common Stock, Shares Outstanding Entity Common Stock Shares Outstanding Entity Public Float Entity Public Float Funds received in advance of study expenditures. Income Statement [Abstract] Current assets: Assets Current [Abstract] Cash and cash equivalents Cash And Cash Equivalents At Carrying Value Restricted cash Restricted Cash And Cash Equivalents At Carrying Value Accounts receivable and unbilled, net (includes $2.3 million and $2.9 million with related parties at December 31, 2016 and 2015, respectively) Receivables Net Current Prepaid expenses and other current assets Prepaid Expense And Other Assets Current Total current assets Assets Current Property and equipment, net Property Plant And Equipment Net Goodwill Goodwill Intangible assets, net Intangible Assets Net Excluding Goodwill Deferred income taxes Deferred Tax Assets Liabilities Net Noncurrent Other assets Other Assets Noncurrent Total assets Assets Current liabilities: Liabilities Current [Abstract] Accounts payable Accounts Payable Current Accrued expenses Accrued Liabilities Current Pre-funded study costs (includes $3.9 million and $3.7 million with related parties at December 31, 2016 and 2015, respectively) Pre Funded Study Costs Advanced billings (includes $7.6 million and $10.2 million with related parties at December 31, 2016 and 2015, respectively) Deferred Revenue Current Current portion of long-term debt Long Term Debt Current Other current liabilities Other Liabilities Current Total current liabilities Liabilities Current Long-term debt, net, less current portion Long Term Debt Noncurrent Deemed landlord liability, less current portion Capital Lease Obligations Noncurrent Deferred income tax liability Deferred Tax Liabilities Noncurrent Other long-term liabilities Other Liabilities Noncurrent Total liabilities Liabilities Commitments and contingencies (see Note 9) Commitments And Contingencies Shareholders’ equity: Stockholders Equity [Abstract] Preferred stock - $0.01 par-value; 5,000,000 shares authorized; no shares issued and outstanding at December 31, 2016; No shares authorized at December 31, 2015 Preferred Stock Value Common stock - $0.01 par-value; 250,000,000 shares and 60,000,000 shares authorized at December 31, 2016 and 2015, respectively 40,662,856 and 32,624,461 shares issued and outstanding at December 31, 2016 and 2015, respectively Common Stock Value Additional paid-in capital Additional Paid In Capital Accumulated deficit Retained Earnings Accumulated Deficit Accumulated other comprehensive loss Accumulated Other Comprehensive Income Loss Net Of Tax Total shareholders’ equity Stockholders Equity Total liabilities and shareholders’ equity Liabilities And Stockholders Equity Unbilled services that are billable to related parties within one year from the respective balance sheet date. Funds received from related parties in advance of study expenditures. Advanced billings represents cash received from related parties or billed amounts per an agreed upon payment schedule where cash has not been received in advance of services being performed or revenue being recognized. Statement Of Financial Position [Abstract] Accounts receivable, Unbilled services with related parties Unbilled Contract Receivables Current With Related Parties Pre-funded study costs with related parties Pre Funded Study Costs With Related Parties Advanced billings with related parties Deferred Revenue Current With Related Parties Preferred stock, par value Preferred Stock Par Or Stated Value Per Share Preferred stock shares authorized Preferred Stock Shares Authorized Preferred stock shares issued Preferred Stock Shares Issued Preferred stock shares outstanding Preferred Stock Shares Outstanding Common stock, par value Common Stock Par Or Stated Value Per Share Common stock shares authorized Common Stock Shares Authorized Common stock shares issued Common Stock Shares Issued Common stock shares outstanding Common Stock Shares Outstanding Statement [Table] Statement [Table] Scenario Statement Scenario [Axis] Scenario, Unspecified Scenario Unspecified [Domain] Predecessor Predecessor [Member] Statement [Line Items] Statement [Line Items] Revenue: Revenues [Abstract] Service revenue, net (includes $24.1 million, $24.0 million, $11.8 million and $2.0 million with related parties for the Successor years ended December 31, 2016 and 2015, the Successor period ended December 31, 2014, and the Predecessor period ended March 31, 2014, respectively) Sales Revenue Services Net Reimbursed out-of-pocket revenue (includes $5.4 million, $6.9 million, $2.0 million and $0.1 million with related parties for the Successor years ended December 31, 2016 and 2015, the Successor period ended December 31, 2014, and the Predecessor period ended March 31, 2014, respectively) Reimbursement Revenue Total revenue Sales Revenue Net Operating expenses: Operating Expenses [Abstract] Direct costs, excluding depreciation and amortization Cost Of Services Excluding Depreciation Depletion And Amortization Reimbursed out-of-pocket expenses (includes $5.4 million, $6.9 million, $2.0 million and $0.1 million with related parties for the Successor years ended December 31, 2016 and 2015, the Successor period ended December 31, 2014, and the Predecessor period ended March 31, 2014, respectively) Cost Of Reimbursable Expense Selling, general and administrative Selling General And Administrative Expense Acquisition and integration Business Combination Integration Related Costs Impairment of goodwill Goodwill Impairment Loss Depreciation Depreciation Amortization Amortization Of Intangible Assets Total operating expenses Costs And Expenses Income from operations Operating Income Loss Other (expense) income, net: Other Income And Expenses [Abstract] Loss on extinguishment of debt Gains Losses On Extinguishment Of Debt Miscellaneous (expense) income, net Other Nonoperating Income Expense Interest expense, net Interest Income Expense Nonoperating Net Total other expense, net Nonoperating Income Expense Income (loss) before income taxes Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest Income tax provision (benefit) Income Tax Expense Benefit Net income (loss) Net Income Loss Net income (loss) per share attributable to common shareholders: Earnings Per Share [Abstract] Basic Earnings Per Share Basic Diluted Earnings Per Share Diluted Weighted average common shares outstanding: Weighted Average Number Of Shares Outstanding [Abstract] Basic Weighted Average Number Of Shares Outstanding Basic Diluted Weighted Average Number Of Diluted Shares Outstanding Reimbursed out-of-pocket revenue with related parties including, but not limited to, travel, meetings, printing, and shipping and handling fees. Reimbursed out-of-pocket expenses with related parties including, but not limited to, travel, meetings, printing, and shipping and handling fees. Service revenue with related parties Revenue From Related Parties Reimbursed out-of-pocket revenue with related parties Reimbursed Out Of Pocket Revenue With Related Parties Reimbursed out-of-pocket expenses with related parties Reimbursed Out Of Pocket Expenses With Related Parties Statement Of Income And Comprehensive Income [Abstract] Net income (loss) Other comprehensive loss Other Comprehensive Income Loss Net Of Tax Period Increase Decrease [Abstract] Foreign currency translation adjustments, net of taxes Other Comprehensive Income Loss Foreign Currency Transaction And Translation Adjustment Net Of Tax Comprehensive income (loss) Comprehensive Income Net Of Tax Adjustments to additional paid in capital liability reclassification upon initial public offering stock options. Adjustments to additional paid in capital tax effect of initial public offering related costs. Close shareholders' equity (deficit) at acquisition date. Statement Of Stockholders Equity [Abstract] Equity Components Statement Equity Components [Axis] Equity Component Equity Component [Domain] Common Stock Common Stock [Member] Additional Paid-in Capital Additional Paid In Capital [Member] (Accumulated Deficit) Retained Earnings Retained Earnings [Member] Accumulated Other Comprehensive Income (Loss) Accumulated Other Comprehensive Income [Member] Balance Close Predecessor shareholders' equity Stockholders Equity At Acquisition Date Issuance of common stock Stock Issued During Period Value New Issues Foreign currency translation Stock-based compensation expense Adjustments To Additional Paid In Capital Sharebased Compensation Requisite Service Period Recognition Value Stock options exercised Stock Issued During Period Value Stock Options Exercised Common stock issuance costs Adjustments To Additional Paid In Capital Stock Issued Issuance Costs Reclassification of liability classified stock options upon IPO Adjustments To Additional Paid In Capital Liability Reclassification Upon Initial Public Offering Stock Options Tax benefit excess (deficiency) from stock-based compensation Adjustment To Additional Paid In Capital Income Tax Effect From Share Based Compensation Net Tax effect of initial public offering related costs Adjustments To Additional Paid In Capital Tax Effect Of Initial Public Offering Related Costs Tax benefit from stock-based compensation Adjustments To Additional Paid In Capital Tax Effect From Share Based Compensation Balance Increase (decrease) in funds received in advance of study expenditures. Payments to acquire businesses, net of cash and restricted cash acquired. Cash and cash equivalents and restricted cash at carrying value. Statement Of Cash Flows [Abstract] CASH FLOWS FROM OPERATING ACTIVITIES: Net Cash Provided By Used In Operating Activities Continuing Operations [Abstract] Adjustments to reconcile net income (loss) to net cash provided by operating activities: Adjustments To Reconcile Net Income Loss To Cash Provided By Used In Operating Activities [Abstract] Stock-based compensation expense Share Based Compensation Amortization of debt issuance costs and discount Amortization Of Financing Costs And Discounts Loss on extinguishment of debt Gains Losses On Extinguishment Of Debt Before Write Off Of Deferred Debt Issuance Cost Deferred income tax benefit Deferred Income Tax Expense Benefit Other Other Noncash Income Expense Changes in assets and liabilities: Increase Decrease In Other Operating Assets And Liabilities Net [Abstract] Accounts receivable and unbilled, net Increase Decrease In Receivables Prepaid expenses and other current assets Increase Decrease In Prepaid Deferred Expense And Other Assets Accounts payable Increase Decrease In Accounts Payable Accrued expenses Increase Decrease In Accrued Liabilities Pre-funded study costs Increase Decrease In Pre Funded Study Costs Advanced billings Increase Decrease In Deferred Revenue Other assets and liabilities, net Increase Decrease In Other Operating Capital Net Net cash provided by operating activities Net Cash Provided By Used In Operating Activities Continuing Operations CASH FLOWS FROM INVESTING ACTIVITIES: Net Cash Provided By Used In Investing Activities Continuing Operations [Abstract] Property and equipment expenditures Payments To Acquire Property Plant And Equipment Acquisition of Predecessor, net of cash and restricted cash received Payments To Acquire Businesses Net Of Cash And Restricted Cash Acquired Other Payments For Proceeds From Other Investing Activities Net cash used in investing activities Net Cash Provided By Used In Investing Activities Continuing Operations CASH FLOWS FROM FINANCING ACTIVITIES: Net Cash Provided By Used In Financing Activities Continuing Operations [Abstract] Payment for common stock issuance costs Payments Of Stock Issuance Costs Proceeds from stock option exercises Proceeds From Stock Options Exercised Excess tax benefit from stock-based compensation Excess Tax Benefit From Share Based Compensation Financing Activities Proceeds from issuance of debt, net of original issue discount Proceeds From Issuance Of Debt Payment of debt Repayments Of Debt Proceeds from revolving loan Proceeds From Lines Of Credit Payment on revolving loan Repayments Of Lines Of Credit Debt issuance costs Payments Of Debt Issuance Costs Payment of deemed landlord liability Repayments Of Long Term Capital Lease Obligations Payment on debt extinguishment Payments Of Debt Extinguishment Costs Proceeds from common stock issued, net Proceeds From Issuance Of Common Stock Net cash (used in) provided by financing activities Net Cash Provided By Used In Financing Activities Continuing Operations EFFECT OF EXCHANGE RATES ON CASH, CASH EQUIVALENTS, AND RESTRICTED CASH Effect Of Exchange Rate On Cash And Cash Equivalents Continuing Operations INCREASE (DECREASE) IN CASH, CASH EQUIVALENTS, AND RESTRICTED CASH Cash And Cash Equivalents Period Increase Decrease Excluding Exchange Rate Effect CASH, CASH EQUIVALENTS, AND RESTRICTED CASH — Beginning of period Cash And Cash Equivalents And Restricted Cash At Carrying Value CASH, CASH EQUIVALENTS, AND RESTRICTED CASH — End of period SUPPLEMENTAL DISCLOSURE OF CASH FLOW INFORMATION— Supplemental Cash Flow Information [Abstract] Cash paid during the period for income taxes Income Taxes Paid Net Cash paid during the period for interest Interest Paid Acquisition of property and equipment—non-cash Noncash Or Part Noncash Acquisition Fixed Assets Acquired1 Accounting Policies [Abstract] Basis of Presentation Organization Consolidation And Presentation Of Financial Statements Disclosure [Text Block] The entire disclosure for change in control. Change in control. Change In Control [Abstract] Change in Control Change In Control Disclosure [Text Block] Summary of Significant Accounting Policies Significant Accounting Policies [Text Block] Receivables [Abstract] Accounts Receivable And Unbilled, Net Loans Notes Trade And Other Receivables Disclosure [Text Block] Property Plant And Equipment [Abstract] Property and Equipment, Net Property Plant And Equipment Disclosure [Text Block] Goodwill And Intangible Assets Disclosure [Abstract] Goodwill and Intangible Assets Goodwill And Intangible Assets Disclosure [Text Block] Payables And Accruals [Abstract] Accrued Expenses Accounts Payable And Accrued Liabilities Disclosure [Text Block] Debt Disclosure [Abstract] Debt Debt Disclosure [Text Block] Commitments And Contingencies Disclosure [Abstract] Commitments, Contingencies, and Guarantees Commitments Contingencies And Guarantees [Text Block] Equity [Abstract] Shareholders' Equity Shareholders Equity And Share Based Payments [Text Block] Compensation Related Costs [Abstract] Employee Benefit Plans Compensation And Employee Benefit Plans [Text Block] Income Tax Disclosure [Abstract] Income Taxes Income Tax Disclosure [Text Block] Miscellaneous (Expense) Income, Net Other Income And Other Expense Disclosure [Text Block] Related Party Transactions [Abstract] Related Party Transactions Related Party Transactions Disclosure [Text Block] Business Combinations [Abstract] Acquisition and Integration Expenses Business Acquisition Integration Restructuring And Other Related Costs [Text Block] Segment Reporting Entity Wide Disclosures [Abstract] Entity Wide Disclosure Segment Reporting Disclosure [Text Block] Quarterly Financial Information Disclosure [Abstract] Quarterly Financial Data (Unaudited) Quarterly Financial Information [Text Block] Principles of Consolidation and Presentation Consolidation Policy [Text Block]