Document and Entity Information [Abstract] Document and Entity Information Statement [Table] Statement [Line Items] Document Type Amendment Flag Document Period End Date Document Fiscal Year Focus Document Fiscal Period Focus Trading Symbol Entity Registrant Name Entity Central Index Key Current Fiscal Year End Date Entity Filer Category Entity Well-known Seasoned Issuer Entity Voluntary Filers Entity Current Reporting Status Entity Public Float Entity Common Stock, Shares Outstanding Consolidated Balance Sheets Assets Current assets Cash and cash equivalents Cash and cash equivalents, end of period Cash and cash equivalents, beginning of period Cash and Cash Equivalents, at Carrying Value, Total Restricted cash Accounts receivable: Billed receivables Unbilled receivables Allowance for doubtful accounts and unbilled services Allowance for doubtful accounts and unbilled services Allowance for Doubtful Accounts Receivable, Current, Ending Balance Allowance for Doubtful Accounts Receivable, Current, Beginning Balance Accounts receivable, net Accounts receivable, net Current portion of notes receivable Notes, Loans and Financing Receivable, Net, Current, Total Sum of the amounts paid in advance for capitalized costs that will be expensed with the passage of time or the occurrence of a triggering event, and will be charged against earnings within one year or the normal operating cycle, if longer and aggregate carry amount as of the balance sheet date, of current assets not separately presented elsewhere in the balance sheet. Prepaid Expense And Other Assets Current Prepaid expenses and other current assets Income taxes receivable Deferred Tax Assets, Net, Current Deferred Tax Assets, Net, Current, Ending Balance Deferred Tax Assets, Net, Current, Beginning Balance Deferred Tax Assets, Net, Current, Total Deferred income taxes Total current assets Total current assets Property and equipment, net of accumulated depreciation Property, Plant and Equipment, Net, Ending Balance Property, Plant and Equipment, Net, Beginning Balance Property, Plant and Equipment, Net, Total Property and equipment, net Goodwill Goodwill, Ending Balance Goodwill, Beginning Balance Other intangible assets, net of amortization Intangible Assets, Net (Excluding Goodwill), Total Other intangible assets, net Notes receivable, net of current portion Notes, Loans and Financing Receivable, Net, Noncurrent, Total Other assets Other Assets, Noncurrent, Total Total assets Total assets Liabilities and Stockholders' Equity Current liabilities Accounts Payable and Accrued Liabilities, Current Accounts Payable and Accrued Liabilities, Current, Total Accounts payable, accrued expenses and other Accrued compensation Employee-related Liabilities, Current, Total Obligation related to long-term debt and capital leases, the portion of which is due in one year or less in the future. Long Term Debt And Capital Lease Obligations Including Convertible Debt Current Current portion of long-term debt and capital lease obligations Amounts billed to clients, such as retainers, in advance of work being performed. Billings in excess of services provided Deferred Tax Liabilities Current Deferred income taxes Total current liabilities Total current liabilities Long-term debt and capital lease obligations, net of current portion Long-term Debt and Capital Lease Obligations, Total Long-term debt, net Deferred Tax Liabilities, Noncurrent Deferred income taxes Other liabilities Other Liabilities, Noncurrent, Total Total liabilities Total liabilities Commitments and contingent liabilities (notes 8, 14 and 15) Stockholders' equity Preferred stock, $0.01 par value; shares authorized - 5,000; none outstanding Preferred Stock, Value, Issued, Ending Balance Preferred Stock, Value, Issued, Beginning Balance Preferred Stock, Value, Issued, Total Common stock, $0.01 par value; shares authorized - 75,000; shares issued and outstanding - 46,144 (2010) and 46,985 (2009) Common Stock, Value, Issued, Ending Balance Common Stock, Value, Issued, Beginning Balance Common Stock, Value, Issued, Total Additional Paid in Capital Additional Paid in Capital, Ending Balance Additional Paid in Capital, Beginning Balance Additional Paid in Capital, Total Additional paid-in capital Retained Earnings (Accumulated Deficit) Retained Earnings (Accumulated Deficit), Ending Balance Retained Earnings (Accumulated Deficit), Beginning Balance Retained Earnings (Accumulated Deficit), Total Retained earnings Accumulated Other Comprehensive Income (Loss), Net of Tax Accumulated Other Comprehensive Income (Loss), Net of Tax, Ending Balance Accumulated Other Comprehensive Income (Loss), Net of Tax, Beginning Balance Accumulated Other Comprehensive Income (Loss), Net of Tax, Total Accumulated other comprehensive loss Total stockholders' equity Ending Balance Beginning Balance Total stockholders' equity Stockholders' equity Total liabilities and stockholders' equity Total liabilities and stockholders' equity Preferred stock, par value Preferred stock, shares authorized Preferred stock, shares outstanding Preferred Stock, Shares Outstanding, Ending Balance Preferred Stock, Shares Outstanding, Beginning Balance Common stock, par value Common stock, shares authorized Common stock, shares issued Common Stock, Shares, Issued, Total Common stock, shares outstanding Ending Balance (in shares) Beginning Balance (in shares) Consolidated Statements of Income Revenues Revenues, Total Operating expenses Direct cost of revenues Cost of Revenue, Total Selling, general and administrative expense Selling, General and Administrative Expense, Total 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. Special Charges, Special charges Special Charges Special charges Amortization of other intangible assets Amortization Of Intangible Assets Amortization of Intangible Assets, Total Costs and Expenses Costs and expenses, total Operating income Operating income Other income (expense) Income derived from investments in debt securities and on cash and cash equivalents the earnings of which reflect the time value of money or transactions in which the payments are for the use or forbearance of money and the net amount of other nonoperating income and expense, which does not qualify for separate disclosure on the income statement under materiality guidelines. Interest Income And Other, Interest income and other Interest income and other Interest income and other Interest Expense Interest expense Interest expense Interest Expense, Total Loss on early extinguishment of debt Gains (Losses) on Extinguishment of Debt, Total Sum of interest income, interest expense, and other non-operating income and expense. Other Income (Expense), Total Other (expense) income Other income (expense), total Income before income tax provision (Loss) income before income tax provision Income before income tax provision Income tax provision Income tax (benefit) provision Income Tax Expense (Benefit), Total Net income Net income Earnings per common share - basic Earnings Per Share, Basic, Total Earnings per common share - diluted Earnings Per Share, Diluted, Total Consolidated Statements of Stockholders' Equity and Comprehensive Income Statement, Equity Components [Axis] Equity Component [Domain] Common Stock Additional Paid-in Capital Retained Earnings Accumulated Other Comprehensive (Loss) Income Comprehensive income: Cumulative translation adjustment, net of income taxes Other Comprehensive Income, Foreign Currency Transaction and Translation Adjustment, Net of Tax, Total Unrealized gains on cash equivalents, net of taxes Unrealized gains on cash equivalents, net of taxes Total comprehensive income Total comprehensive income Reacquisition of equity component of convertible debt Issuance of common stock in connection with: Number of shares related to the stock issued during the period as a result of the exercise of stock options. Includes the tax benefit associated with any share-based compensation plan other than an employee stock ownership plan (ESOP). The tax benefit results from the deduction by the entity on its tax return for an award of stock that exceeds the cumulative compensation cost for common stock or preferred stock recognized for financial reporting. Includes any resulting tax benefit that exceeds the previously recognized deferred tax asset (excess tax benefits). Stock Issued During Period Shares Stock Options Exercised Including Adjustments To Additional Paid In Capital Tax Effect From Share Based Compensation Exercise of options, including income tax benefit from share- based awards (in shares) Value stock issued during the period as a result of the exercise of stock options. Includes the tax benefit associated with any share-based compensation plan other than an employee stock ownership plan (ESOP). The tax benefit results from the deduction by the entity on its tax return for an award of stock that exceeds the cumulative compensation cost for common stock or preferred stock recognized for financial reporting. Includes any resulting tax benefit that exceeds the previously recognized deferred tax asset (excess tax benefits). Stock Issued During Period Value Stock Options Exercised Including Adjustments To Additional Paid In Capital Tax Effect From Share Based Compensation Exercise of options, including income tax benefit from share- based awards Employee stock purchase plan (in shares) Employee stock purchase plan StockIssuedDuringPeriodSharesRestrictedStockAwardNetOfForfeitures(Shares) Restricted share grants, less net settled shares (in shares) Stock Issued During Period, Shares, Restricted Stock Award, Net of Forfeitures, Total StockIssuedDuringPeriodValueRestrictedStockAwardNetOfForfeitures Restricted share grants, less net settled shares Stock Issued During Period, Value, Restricted Stock Award, Net of Forfeitures, Total Market value of stock units issued under incentive compensation plans. Stock Issued During Period Value Stock Units Under Incentive Compensation Plan Stock units issued under incentive compensation plan Stock Issued During Period Shares Acquisitions Business combinations (in shares) The value of stock issued pursuant to acquisitions and post-acquisition adjustments to initial stock valuations. Stock Issued And Stock Valuation Adjustments Pursuant To Acquisitions Value Business combinations Purchase and retirement of common stock (in shares) Purchase and retirement of common stock Purchase and retirement of common stock Adjustments to Additional Paid in Capital, Share-based Compensation, Requisite Service Period Recognition, Value Share-based compensation Cumulative translation adjustment, taxes Other Comprehensive Income, Foreign Currency Translation Adjustment, Tax, Total Unrealized gains on cash equivalents, taxes Exercise of options, income tax benefit Restricted share grants, settled shares Consolidated Statements of Cash Flow Operating activities Adjustments to reconcile net income to net cash provided by operating activities: The aggregate expense recognized in the current period that allocates the cost of tangible assets and capitalized software to periods that benefit from use of the assets. Adjustment Depreciation And Amortization Depreciation and amortization 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. Amortization And Impairment Of Other Intangible Assets Amortization and impairment of other intangible assets Provision for doubtful accounts Non-cash share-based compensation Share-based Compensation, Total Excess tax benefits from share-based compensation Excess tax benefits from share-based compensation Non-cash interest expense Adjustments, Noncash Items, to Reconcile Net Income (Loss) to Cash Provided by (Used in) Operating Activities, Other Other Changes in operating assets and liabilities, net of effects from acquisitions: Accounts receivable, billed and unbilled Accounts receivable, billed and unbilled Increase Decrease In Notes Receivable Current Notes receivable Notes receivable Prepaid expenses and other assets Prepaid expenses and other assets Increase (Decrease) in Prepaid, Deferred Expense and Other Assets, Total The net change during the reporting period in the aggregate amount of accounts payable, accrued expenses and other current and noncurrent operating liabilities. Increase (Decrease) in Accounts Payable Accrued Expenses And Other Liabilities Accounts payable, accrued expenses and other Increase Decrease In Accrued Income Taxes Payable Income taxes Net change during the period in accrued compensation which includes accrued bonuses, payroll and vacation. Increase (Decrease) In Accrued Compensation Accrued compensation Net change during the period in billings in excess of services provided. Increase (Decrease) In Billing In Excess Of Service Provided Billings in excess of services provided Net cash provided by operating activities Operating activities Net cash provided by operating activities Net cash provided by (used in) operating activities Investing activities Payments for acquisition of businesses, including contingent payments, net of cash received Payments for acquisition of businesses, net of cash received Payments to Acquire Businesses, Net of Cash Acquired, Total Purchases of property and equipment Purchases of property and equipment Payments to Acquire Property, Plant, and Equipment, Total Purchases of short-term investments Purchases of short-term investments Proceeds from maturity of short-term investment Proceeds from Sale, Maturity and Collections of Investments, Total Proceeds from sale or maturity of short-term investments Payments for (Proceeds from) Other Investing Activities Other Net cash used in investing activities Net cash used in investing activities Financing activities Borrowings under revolving line of credit Proceeds from Lines of Credit, Total Payments of revolving line of credit Payments of revolving line of credit Payments long-term debt and capital lease obligations Repayments of Other Short-term Debt Payments of short-term borrowings of acquired subsidiary Payments of long-term debt and capital lease obligations Payments of long-term debt and capital lease obligations Repayments of Long-term Debt, Long-term Capital Lease Obligations, and Capital Securities, Total Issuance of debt securities, net Payments of debt financing fees Payments of debt financing fees Proceeds from the termination of interest rate swaps. Proceeds Termination Interest Rate Swap Cash received for settlement of interest rate swaps Payments for Repurchase of Common Stock Purchase and retirement of common stock Purchases and retirement of common stock Net issuance of common stock under equity compensation plans Excess of tax benefits from share-based compensation Excess tax benefit from share-based compensation Excess of tax benefits from share based compensation Proceeds from (Payments for) Other Financing Activities Other Net cash provided by financing activities Net cash provided by (used in) financing activities Net cash provided by (used in) financing activities Effect of exchange rate changes on cash and cash equivalents Effect of exchange rate changes and fair value adjustments on cash and cash equivalents Effect of Exchange Rate on Cash and Cash Equivalents, Total Net increase in cash and cash equivalents Net increase (decrease) in cash and cash equivalents Net increase (decrease) in cash and cash equivalents Supplemental cash flow disclosures Cash paid for interest Cash paid for income taxes, net of refunds Income Taxes Paid, Net, Total Non-cash investing and financing activities: The fair value of common stock issued to acquire businesses in noncash investing and financing activities. Common Stock Issued To Acquire Businesses Issuance of common stock to acquire businesses The fair value of notes issued to acquire businesses in noncash investing and financing activities. Notes Issued To Acquire Businesses Issuance of notes payable to acquire businesses Issuance of stock units under incentive compensation plans. Issuance of stock units under incentive compensation plans Description of Business and Summary of Significant Accounting Policies [Abstract] Description of Business and Summary of Significant Accounting Policies Description containing the entire organization, consolidation and basis of presentation of financial statements disclosure and a description of all significant accounting policies of the reporting entity. Description Of Business And Summary Of Significant Accounting Policies Text Block Description of Business and Summary of Significant Accounting Policies Earnings Per Common Share Earnings Per Share Text Block Earnings Per Common Share New Accounting Standards Not Yet Adopted Description of New Accounting Pronouncements Not yet Adopted New Accounting Standards Not Yet Adopted Special Charge [Abstract] Special Charges 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. Special Charges [Text Block] Special Charges Interest Income And Other [Abstract] Interest Income and Other Disclosure of the components of interest income and other. Interest Income And Other Text Block Interest Income and Other Share-Based Compensation Disclosure of Share-based Compensation Arrangements by Share-based Payment Award [Text Block] Share-Based Compensation Research and Development Costs Research Development And Computer Software Disclosure Text Block Research and Development Costs Acquisitions Business Combination Disclosure Text Block Acquisitions Concentrations of Risk Concentration Risk Disclosure Text Block Concentrations of Risk Balance Sheet Details Details of certain Balance Sheet accounts. Balance Sheet Details Text Block Balance Sheet Details Fair Value Disclosures [Abstract] Financial Instruments Fair Value Disclosures Text Block Financial Instruments Property and Equipment Property Plant And Equipment Text Block Property and Equipment Goodwill and Other Intangible Assets Abstract Goodwill and Other Intangible Assets Goodwill And Intangible Assets Disclosure Text Block Goodwill and Other Intangible Assets Long-Term Debt and Capital Lease Obligations Debt Disclosure Text Block Long-Term Debt and Capital Lease Obligations Commitments and Contingencies [Abstract] Commitments and Contingencies Commitments And Contingencies Disclosure Text Block Commitments and Contingencies Income Taxes Income Tax Disclosure Text Block Income Taxes Stockholders' Equity Stockholders Equity Note Disclosure Text Block Stockholders' Equity