Entity Central Index Key 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 Filer Category Entity Filer Category Entity Common Stock, Shares Outstanding Entity Common Stock Shares Outstanding Funds received in advance of study expenditures. Income Statement [Abstract] ASSETS Assets [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 $1.7 million and $2.3 million with related parties at March 31, 2017 and December 31, 2016, 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 LIABILITIES AND SHAREHOLDERS’ EQUITY Liabilities And Stockholders Equity [Abstract] Current liabilities: Liabilities Current [Abstract] Accounts payable Accounts Payable Current Accrued expenses Accrued Liabilities Current Pre-funded study costs (includes $3.9 million and $3.9 million with related parties at March 31, 2017 and December 31, 2016, respectively) Pre Funded Study Costs Advanced billings (includes $5.7 million and $7.6 million with related parties at March 31, 2017 and December 31, 2016, 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 10) 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 March 31, 2017 and December 31, 2016, respectively Preferred Stock Value Common stock - $0.01 par-value; 250,000,000 shares authorized at March 31, 2017 and December 31, 2016, respectively; 40,675,553 and 40,662,856 shares issued and outstanding at March 31, 2017 and December 31, 2016, respectively Common Stock Value Additional paid-in capital Additional Paid In Capital Common Stock 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 Revenue: Revenues [Abstract] Service revenue, net (includes $4.0 million and $7.8 million with related parties for the three months ended March 31, 2017 and 2016, respectively) Sales Revenue Services Net Reimbursed out-of-pocket revenue (includes $0.7 million and $1.2 million with related parties for the three months ended March 31, 2017 and 2016, 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 $0.7 million and $1.2 million with related parties for the three months ended March 31, 2017 and 2016, respectively) Cost Of Reimbursable Expense Selling, general and administrative Selling General And Administrative Expense Depreciation Depreciation Amortization Amortization Of Intangible Assets Total operating expenses Costs And Expenses Income from operations Operating Income Loss Other expense, net: Nonoperating Income Expense [Abstract] Miscellaneous expense, net Other Nonoperating Income Expense Interest expense, net Interest Income Expense Nonoperating Net Total other expense, net Nonoperating Income Expense Income before income taxes Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest Income tax provision Income Tax Expense Benefit Net income Net Income Loss Net income 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 Other comprehensive income 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 Comprehensive Income Net Of Tax Increase (decrease) in funds received in advance of study expenditures. Amount of increase (decrease) from effect of exchange rate changes on cash and cash equivalents, and cash and cash equivalents restricted to withdrawal or usage; held in foreign currencies. Excludes amounts for disposal group and discontinued operations. Cash includes, but is not limited to, currency on hand, demand deposits with banks or financial institutions, and other accounts with general characteristics of demand deposits. Cash equivalents include, but are not limited to, short-term, highly liquid investments that are both readily convertible to known amounts of cash and so near their maturity that they present insignificant risk of changes in value because of changes in interest rates. Amount of increase (decrease) in cash, cash equivalents, and cash and cash equivalents restricted to withdrawal or usage; including effect from exchange rate change. Cash includes, but is not limited to, currency on hand, demand deposits with banks or financial institutions, and other accounts with general characteristics of demand deposits. Cash equivalents include, but are not limited to, short-term, highly liquid investments that are both readily convertible to known amounts of cash and so near their maturity that they present insignificant risk of changes in value because of changes in interest rates. Amount of cash and cash equivalents, and cash and cash equivalents restricted to withdrawal or usage. Excludes amount for disposal group and discontinued operations. Cash includes, but is not limited to, currency on hand, demand deposits with banks or financial institutions, and other accounts with general characteristics of demand deposits. Cash equivalents include, but are not limited to, short-term, highly liquid investments that are both readily convertible to known amounts of cash and so near their maturity that they present insignificant risk of changes in value because of changes in interest rates. 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 to net cash (used in) 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 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 (used in) 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 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] Proceeds from stock option exercises Proceeds From Stock Options Exercised Payment of debt Repayments Of Debt Payment of deemed landlord liability Repayments Of Long Term Capital Lease Obligations Net cash used in 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 Cash Equivalents Restricted Cash And Restricted Cash Equivalents (DECREASE) INCREASE IN CASH, CASH EQUIVALENTS, AND RESTRICTED CASH Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Period Increase Decrease Including Exchange Rate Effect CASH, CASH EQUIVALENTS, AND RESTRICTED CASH — Beginning of period Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CASH, CASH EQUIVALENTS, AND RESTRICTED CASH — End of period Accounting Policies [Abstract] Basis of Presentation Organization Consolidation And Presentation Of Financial Statements Disclosure [Text Block] Net Income Per Share Earnings Per Share [Text Block] Fair Value Disclosures [Abstract] Fair Value Measurements Fair Value Disclosures [Text Block] Receivables [Abstract] Accounts Receivable And Unbilled, Net Loans Notes Trade And Other Receivables Disclosure [Text Block] Goodwill And Intangible Assets Disclosure [Abstract] Intangible Assets, Net 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] Equity [Abstract] Shareholder's Equity and Stock-Based Compensation Shareholders Equity And Share Based Payments [Text Block] Income Tax Disclosure [Abstract] Income Taxes Income Tax Disclosure [Text Block] Commitments And Contingencies Disclosure [Abstract] Commitments and Contingencies Commitments And Contingencies Disclosure [Text Block] Related Party Transactions [Abstract] Related Party Transactions Related Party Transactions Disclosure [Text Block] Subsequent Events [Abstract] Subsequent Events Subsequent Events [Text Block] Unaudited Interim Financial Information Basis Of Accounting Policy Policy [Text Block] Recently Adopted and Issued Accounting Standards New Accounting Pronouncements Policy Policy [Text Block] Schedule of Reconciliation of Denominators and Additional Shares that are Excluded from the Calculation of EPS Schedule Of Antidilutive Securities Excluded From Computation Of Earnings Per Share [Text Block] Schedule of Accounts Receivable and Unbilled, Net Schedule Of Accounts Notes Loans And Financing Receivable [Text Block] Schedule of finite lived and indefinite lived intangible assets by major class. Schedule of Intangible Assets, Net Schedule Of Finite Lived And Indefinite Lived Intangible Assets By Major Class Table [Text Block] Schedule of Estimated Amortization Expense of Intangible Assets Scheduleof Finite Lived Intangible Assets Future Amortization Expense Table [Text Block] Schedule of Accrued Expenses Schedule Of Accrued Liabilities Table [Text Block] Schedule of Debt Schedule Of Debt Instruments [Text Block] Schedule of Principal Payments on Debt Due Schedule Of Maturities Of Long Term Debt Table [Text Block] Schedule of Stock Option Activity Schedule Of Share Based Compensation Stock Options Activity Table [Text Block] Schedule of Restricted Share Activity Schedule Of Sharebased Compensation Restricted Stock And Restricted Stock Units Activity Table [Text Block] Summary of Stock-Based Compensation Expense Recognized in Statements of Operations Related to All Outstanding Stock Based Compensation Awards Schedule Of Employee Service Share Based Compensation Allocation Of Recognized Period Costs [Text Block] Organization Consolidation And Presentation Of Financial Statements [Abstract] Basis of Presentation. Basis of presentation. Basis Of Presentation [Table] Basis Of Presentation [Table] Adjustments for New Accounting Pronouncements Adjustments For New Accounting Pronouncements [Axis] Type of Adoption Type Of Adoption [Member] Accounting Standards Update 2016-09. Accounting Standard Update (“ASU”) No. 2016-09 Accounting Standards Update201609 [Member] Range Range [Axis] Range Range [Member] Maximum Maximum [Member] Basis Of Presentation [Line Items] Basis Of Presentation [Line Items] Reverse stock split of common stock Stockholders Equity Note Stock Split Conversion Ratio1 Discrete adjustments to income tax expense benefit. Discrete adjustments to income tax expense recognized Discrete Adjustments To Income Tax Expense Benefit Weighted average number of common and restricted shares outstanding basic. Schedule Of Antidilutive Securities Excluded From Computation Of Earnings Per Share [Table] Schedule Of Antidilutive Securities Excluded From Computation Of Earnings Per Share [Table] Equity Components Statement Equity Components [Axis] Equity Component Equity Component [Domain] Common Stock Common Stock [Member] Award Type Award Type [Axis] Equity Award Share Based Compensation Arrangements By Share Based Payment Award Award Type And Plan Name [Domain] RSAs Restricted Stock [Member] Antidilutive Securities Excluded From Computation Of Earnings Per Share [Line Items] Antidilutive Securities Excluded From Computation Of Earnings Per Share [Line Items] Weighted-average shares: Weighted Average Number Of Shares Outstanding Basic [Abstract] Basic weighted-average common shares outstanding Total weighted-average shares Weighted Average Number Of Common And Restricted Shares Outstanding Basic Earnings per common share—Basic Earnings Per Share Basic [Abstract] Less: Undistributed earnings allocated to RSAs Undistributed Earnings Net income available to common shareholders—Basic Net Income Loss Available To Common Stockholders Basic Net income per common share—Basic Effect of diluted shares Weighted Average Number Diluted Shares Outstanding Adjustment Diluted weighted-average shares outstanding Net income per common share—Diluted Antidilutive Securities Antidilutive Securities Excluded From Computation Of Earnings Per Share By Antidilutive Securities [Axis] Antidilutive Securities, Name Antidilutive Securities Name [Domain] Stock Options Employee Stock Option [Member] Anti-dilutive securities excluded from computation of diluted EPS Antidilutive Securities Excluded From Computation Of Earnings Per Share Amount Fair value assets transfers between level 1, level 2 and level 3. Fair value measurements transfers between level 1, level 2, or level 3 Fair Value Assets Transfers Between Level1 Level2 And Level3 Accounts Notes And Loans Receivable Net Current [Abstract] Accounts receivable Accounts Receivable Gross Current Unbilled Unbilled Receivables Current Less allowance for doubtful accounts Allowance For Doubtful Accounts Receivable Current Total accounts receivable and unbilled, net Finite lived intangible assets accumulated amortization. Schedule of finite and indefinite lived intangible assets. Schedule of finite and indefinite lived intangible assets. Schedule Of Finite And Indefinite Lived Intangible Assets [Table] Schedule Of Finite And Indefinite Lived Intangible Assets [Table] Finite-Lived Intangible Assets by Major Class Finite Lived Intangible Assets By Major Class [Axis] Finite-Lived Intangible Assets, Major Class Name Finite Lived Intangible Assets Major Class Name [Domain]