Entity Central Index Key Segment's share of consolidated operating income before depreciation, amortization of intangible assets, remeasurement of acquisition-related contingent consideration, special charges and goodwill impairment charges. Segment depreciation expense not including unallocated corporate depreciation expense. Used as a reconciling item from Total Adjusted Segment EBITDA to Income before tax provision, the charge against earnings in the period, comprised of costs associated with non-recurring activities related to our global branding strategy and other strategic branding decisions, a realignment of our workforce and consolidation of office locations. Unallocated corporate expenses excluding special charges not allocated to segments. Interest and Other Income (Expense), Net Amounts due from subsidiaries that are eliminated in consolidation. Other Noncurrent Assets plus Notes Receivable, net of current portion Amounts due to subsidiaries that are eliminated in consolidation. The charge against earnings in the period, comprised of costs associated with non-recurring activities related to our global branding strategy and other strategic branding decisions, a realignment of our workforce and consolidation of office locations. The net cash associated with the amount received from holders to acquire the entity's shares under incentive and share awards, including stock option exercises. This item inherently excludes any excess tax benefit, which the entity may have realized and reported separately. Intercompany transfers among subsidiaries that are eliminated in consolidation. 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 Statement Of Financial Position [Abstract] Assets Assets [Abstract] Current assets Assets Current [Abstract] Cash and cash equivalents Cash And Cash Equivalents At Carrying Value Accounts receivable: Accounts Receivable Net Current [Abstract] Billed receivables Accounts Receivable Gross Current Unbilled receivables Costs In Excess Of Billings On Uncompleted Contracts Or Programs Expected To Be Collected Within One Year Allowance for doubtful accounts and unbilled services Allowance For Doubtful Accounts Receivable Current Accounts receivable, net Accounts Receivable Net Current Current portion of notes receivable Notes And Loans Receivable Net Current Prepaid expenses and other current assets Prepaid Expense And Other Assets Current Total current assets Assets Current Property and equipment, net of accumulated depreciation Property Plant And Equipment Net Goodwill Goodwill Other intangible assets, net of amortization Intangible Assets Net Excluding Goodwill Notes receivable, net of current portion Notes And Loans Receivable Net Noncurrent Other assets Other Assets Noncurrent Total assets Assets Liabilities and Stockholders' Equity Liabilities And Stockholders Equity [Abstract] Current liabilities Liabilities Current [Abstract] Accounts payable, accrued expenses and other Accounts Payable And Accrued Liabilities Current Accrued compensation Employee Related Liabilities Current Billings in excess of services provided Billings In Excess Of Cost Current Total current liabilities Liabilities Current Long-term debt, net Long Term Debt Noncurrent Deferred income taxes Deferred Tax Liabilities Noncurrent Other liabilities Other Liabilities Noncurrent Total liabilities Liabilities Commitments and contingent liabilities (note 10) Commitments And Contingencies Stockholders' equity Stockholders Equity [Abstract] Preferred stock, $0.01 par value; shares authorized — 5,000; none outstanding Preferred Stock Value Common stock, $0.01 par value; shares authorized — 75,000; shares issued and outstanding — 41,385 (2016) and 41,234 (2015) Common Stock Value Additional paid-in capital Additional Paid In Capital Common Stock Retained earnings Retained Earnings Accumulated Deficit Accumulated other comprehensive loss Accumulated Other Comprehensive Income Loss Net Of Tax Total stockholders' equity Stockholders Equity Total liabilities and stockholders' equity Liabilities And Stockholders Equity Preferred stock, par value Preferred Stock Par Or Stated Value Per Share Preferred stock, shares authorized Preferred Stock Shares Authorized 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 Income Statement [Abstract] Revenues Revenues Operating expenses Operating Costs And Expenses [Abstract] Direct cost of revenues Cost Of Revenue Selling, general and administrative expenses Selling General And Administrative Expense Special charges Special Charges Amount Acquisition-related contingent consideration Business Combination Contingent Consideration Arrangements Change In Amount Of Contingent Consideration Liability1 Amortization of other intangible assets Amortization Of Intangible Assets Costs and Expenses, Total Costs And Expenses Operating income Operating Income Loss Other income (expense) Nonoperating Income Expense [Abstract] Interest income and other Interest And Other Income Expense Net Interest expense Interest Expense Other (expense) income Nonoperating Income Expense Income before income tax provision Income Loss From Continuing Operations Before Income Taxes Minority Interest And Income Loss From Equity Method Investments Income tax provision Income Tax Expense Benefit Equity in net earnings of subsidiaries Income Loss From Subsidiaries Net Of Tax Net income Net Income Loss Earnings per common share — basic Earnings Per Share Basic Earnings per common share — diluted Earnings Per Share Diluted Other comprehensive loss, net of tax Other Comprehensive Income Loss Net Of Tax Portion Attributable To Parent [Abstract] Foreign currency translation adjustments, net of tax expense of $0 Other Comprehensive Income Loss Foreign Currency Transaction And Translation Adjustment Net Of Tax Total other comprehensive loss, net of tax Other Comprehensive Income Loss Net Of Tax Comprehensive income Comprehensive Income Net Of Tax Foreign currency translation adjustments, tax expense Other Comprehensive Income Loss Foreign Currency Translation Adjustment Tax Market value of stock units issued under incentive compensation plans. Statement Of Stockholders Equity [Abstract] Statement [Table] Statement [Table] 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] Retained Earnings Retained Earnings [Member] Accumulated Other Comprehensive (Loss) Accumulated Other Comprehensive Income [Member] Statement [Line Items] Statement [Line Items] Beginning Balance Beginning Balance (in shares) Net income (loss) Other comprehensive income (loss): Comprehensive Income Net Of Tax [Abstract] Foreign currency translation adjustment Issuance of common stock in connection with: Stock Issued During Period Sharebased Compensation [Abstract] Exercise of options, net of income tax benefit from share-based awards of $107 (in Shares) Stock Issued During Period Shares Stock Options Exercised Exercise of options, net of income tax benefit from share-based awards of $107 Stock Issued During Period Value Stock Options Exercised Restricted share grants, less net settled shares of 69 (in Shares) Stock Issued During Period Shares Restricted Stock Award Net Of Forfeitures Restricted share grants, less net settled shares of 69 Stock Issued During Period Value Restricted Stock Award Net Of Forfeitures Stock units issued under incentive compensation plan Stock Issued During Period Value Stock Units Under Incentive Compensation Plan Purchase and retirement of common stock (in shares) Stock Repurchased And Retired During Period Shares Purchase and retirement of common stock Stock Repurchased And Retired During Period Value Share-based compensation Adjustments To Additional Paid In Capital Sharebased Compensation Requisite Service Period Recognition Value Ending Balance Ending Balance (in shares) Exercise of options, income tax expense Adjustments To Additional Paid In Capital Tax Effect From Share Based Compensation Restricted share grants, settled shares Stock Issued During Period Shares Restricted Stock Award Forfeited The aggregate expense charged against earnings to allocate the cost of intangible assets (nonphysical assets not used in production) in a systematic and rational manner to the periods expected to benefit from such assets, combined with the amount of impairment loss recognized in the period resulting from the write-down of the carrying amount of indefinite-lived intangible assets, other than goodwill, to fair value. As a noncash expense, this element is added back to net income when calculating cash provided by (used in) operations using the indirect method. Net change during the period in billings in excess of services provided. Statement Of Cash Flows [Abstract] Operating activities Net Cash Provided By Used In Operating Activities Continuing Operations [Abstract] Adjustments to reconcile net income to net cash used in operating activities: Adjustments To Reconcile Net Income Loss To Cash Provided By Used In Operating Activities [Abstract] Depreciation and amortization Depreciation And Amortization Amortization and impairment of other intangible assets Amortization And Impairment Of Other Intangible Assets Provision for doubtful accounts Provision For Doubtful Accounts Non-cash share-based compensation Share Based Compensation Non-cash interest expense Paid In Kind Interest Other Other Noncash Income Expense Changes in operating assets and liabilities, net of effects from acquisitions: Increase Decrease In Operating Capital [Abstract] Accounts receivable, billed and unbilled Increase Decrease In Accounts Receivable Notes receivable Increase Decrease In Notes Receivable Current Prepaid expenses and other assets Increase Decrease In Prepaid Deferred Expense And Other Assets Accounts payable, accrued expenses and other Increase Decrease In Accounts Payable And Accrued Liabilities Income taxes Increase Decrease In Accrued Income Taxes Payable Accrued compensation Increase Decrease In Employee Related Liabilities Billings in excess of services provided Increase Decrease In Billing In Excess Of Service Provided Net cash used in operating activities Net Cash Provided By Used In Operating Activities Continuing Operations Investing activities Net Cash Provided By Used In Investing Activities Continuing Operations [Abstract] Purchases of property and equipment 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 Financing activities Net Cash Provided By Used In Financing Activities Continuing Operations [Abstract] Borrowings under revolving line of credit, net Proceeds From Lines Of Credit Deposits Proceeds From Contributions From Affiliates Purchase and retirement of common stock Payments For Repurchase Of Common Stock Net issuance of common stock under equity compensation plans Proceeds Or Payments From Issuance Of Shares Under Incentive And Share Based Compensation Plans Including Stock Options Other Proceeds From Payments For Other Financing Activities Net cash provided by financing activities Net Cash Provided By Used In Financing Activities Continuing Operations Effect of exchange rate changes on cash and cash equivalents Effect Of Exchange Rate On Cash And Cash Equivalents Net decrease in cash and cash equivalents Cash And Cash Equivalents Period Increase Decrease Cash and cash equivalents, beginning of period Cash and cash equivalents, end of period Supplemental cash flow disclosures Supplemental Cash Flow Information [Abstract] Cash paid for interest Interest Paid Cash paid for income taxes, net of refunds Income Taxes Paid Net Non-cash investing and financing activities: Cash Flow Noncash Investing And Financing Activities Disclosure [Abstract] Issuance of stock units under incentive compensation plans Restricted Stock Expense Accounting Policies [Abstract] Basis of Presentation and Significant Accounting Policies Basis Of Presentation And Significant Accounting Policies [Text Block] Earnings Per Share [Abstract] Earnings Per Common Share Earnings Per Share [Text Block] Accounting Changes And Error Corrections [Abstract] New Accounting Standards New Accounting Pronouncements And Changes In Accounting Principles [Text Block] Description of non-recurring activities related to our global branding strategy and other strategic branding decisions, a realignment of our workforce and consolidation of office locations, including related costs and liabilities. Text Block [Abstract] Special Charges Special Charges [Text Block] Provision for doubtful accounts disclosure Allowance for Doubtful Accounts and Unbilled Services Provision For Doubtful Accounts Disclosure [Text Block] Research And Development [Abstract] Research and Development Costs Research Development And Computer Software Disclosure [Text Block] Fair Value Disclosures [Abstract] Financial Instruments Fair Value Disclosures [Text Block] Goodwill And Intangible Assets Disclosure [Abstract] Goodwill and Other Intangible Assets Goodwill And Intangible Assets Disclosure [Text Block] Debt Disclosure [Abstract] Long-Term Debt Debt Disclosure [Text Block] Commitments And Contingencies Disclosure [Abstract] Commitments and Contingencies Commitments And Contingencies Disclosure [Text Block] Disclosure Of Compensation Related Costs Sharebased Payments [Abstract] Share-Based Compensation Disclosure Of Share Based Compensation Arrangements By Share Based Payment Award [Text Block] Segment Reporting [Abstract] Segment Reporting Segment Reporting Disclosure [Text Block] Organization Consolidation And Presentation Of Financial Statements [Abstract] Supplemental Condensed Consolidating Guarantor and Non-Guarantor Financial Information Additional Financial Information Disclosure [Text Block] Schedule of Earnings Per Share Basic and Diluted Schedule Of Earnings Per Share Basic And Diluted Table [Text Block] Disclosure of changes to an entity's special charges reserve that occurred during the period associated with the exit from or disposal of business activities or restructurings for each major type of cost. This element may also include a description of any reversal and other adjustment made during the period to the amount of an accrued liability for restructuring activities. This element may be used to encapsulate the roll forward presentations of an entity's reserve by type of cost and in total, and explanation of changes that occurred in the period. Schedule of Special Charges Reserve by Type of Cost Schedule Of Special Charges Reserve By Type Of Cost [Text Block] Schedule of Changes in Carrying Amounts of Goodwill by Operating Segment Schedule Of Goodwill [Text Block] Components of Debt Obligations Schedule Of Debt Instruments [Text Block] Schedule of Share-Based Compensation Expense Schedule Of Employee Service Share Based Compensation Allocation Of Recognized Period Costs [Text Block] Revenues and Adjusted Segment Earnings before Interest, Taxes, Depreciation and Amortization for Reportable Segments Schedule Of Segment Reporting Information By Segment [Text Block] Reconciliation of adjusted segment EBITDA to income before income tax provision. Reconciliation of Adjusted Segment Earnings before Interest, Taxes, Depreciation and Amortization Schedule Of Reconciliation Of Adjusted Segment E B I T D A Table [Text Block] Condensed Consolidating Balance Sheet Information Schedule Of Condensed Balance Sheet Table [Text Block] Condensed Consolidating Statement of Comprehensive Income Schedule Of Condensed Income Statement Table [Text Block] Condensed Consolidating Statement of Cash Flow Schedule Of Condensed Cash Flow Statement Table [Text Block] Earnings Per Share Basic And Diluted Numerator [Abstract] Earnings Per Common Share [Line Items] Schedule of Earnings Per Share, Basic and Diluted, by Common Class [Table] Schedule Of Earnings Per Share Basic And Diluted By Common Class [Table] Schedule Of Earnings Per Share Basic And Diluted By Common Class [Table] Antidilutive Securities Antidilutive Securities Excluded From Computation Of Earnings Per Share By Antidilutive Securities [Axis] Antidilutive Securities, Name Antidilutive Securities Name [Domain] Stock Options And Restricted Shares [Member] Stock Options And Restricted Shares Stock Options And Restricted Shares [Member] Earnings Per Common Share [Line Items] Earnings Per Common Share [Line Items] Numerator—basic and diluted Earnings Per Share Basic And Diluted Numerator [Abstract] Net income Denominator Weighted Average Number Of Shares Outstanding Diluted Disclosure Items [Abstract] Weighted average number of common shares outstanding — basic Weighted Average Number Of Shares Outstanding Basic Effect of dilutive stock options Incremental Common Shares Attributable To Call Options And Warrants Effect of dilutive restricted shares Incremental Common Shares Attributable To Nonvested Shares With Forfeitable Dividends Weighted average number of common shares outstanding — diluted Weighted Average Number Of Diluted Shares Outstanding Anti-dilutive securities excluded from computation of earnings per share Antidilutive Securities Excluded From Computation Of Earnings Per Share Amount Number of employees terminated. Total cash outflows associated with related charges recorded in the current period, including amounts already paid.