Document and Entity Information [Abstract] Document and Entity Information Statement [Table] Class of Stock [Axis] Class of Stock [Domain] Common Stock, Class A [Member] Common Stock, Class B [Member] 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 Common Stock, Shares Outstanding Entity Well-known Seasoned Issuer Entity Voluntary Filers Entity Current Reporting Status Entity Public Float 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 Receivables-net Receivables Receivables, Net, Current, Total Sum of the carrying amount for a classified balance sheet date of expenditures made in advance of when the economic benefit of the cost will be realized, and which will be expensed in future periods with the passage of time or when a triggering event occurs and the carrying amount as of the balance sheet date of assets not otherwise specified in the taxonomy. Also includes assets not individually reported in the financial statements, or not separately disclosed in notes. Prepaid Expense And Other Assets Current Prepaid expenses and other Total Current Assets Total Current Assets Property and equipment-net Property, Plant and Equipment, Net, Ending Balance Property, Plant and Equipment, Net, Beginning Balance Property, Plant and Equipment, Net, Total Goodwill Goodwill, ending balance Goodwill, beginning balance Goodwill, beginning balance Goodwill, Ending Balance Other intangibles-net Intangible Assets, Net (Excluding Goodwill), Total Employee supplemental savings plan assets 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 and accrued expenses Accrued salaries and related expenses Employee-related Liabilities, Current, Total Billings in Excess of Cost Billings in excess of revenue earned Total Current Liabilities Total Current Liabilities Long Term Debt Noncurrent Long-term Debt, Excluding Current Maturities, Total Long-term debt Pension and Other Postretirement Defined Benefit Plans, Liabilities, Noncurrent Pension and Other Postretirement Defined Benefit Plans, Liabilities, Noncurrent, Total Accrued retirement Other long-term liabilities Other Liabilities, Noncurrent, Total Deferred income taxes-non-current TOTAL LIABILITIES TOTAL LIABILITIES Commitments And Contingencies 2009 COMMITMENTS AND CONTINGENCIES STOCKHOLDERS' EQUITY: Additional paid-in capital At end of year At beginning of year At beginning of year Additional Paid in Capital, Total Treasury stock, 243,040 shares at cost at September 30, 2010 and December 31, 2009 Treasury stock, 243,040 shares at cost at December 31, 2010 and 2009 At end of year At beginning of year Retained earnings At end of year At beginning of year Retained Earnings (Accumulated Deficit), Total Accumulated other comprehensive loss At end of year At beginning of year Accumulated Other Comprehensive Income (Loss), Net of Tax, Total Unearned Employee Stock Ownership Plan Shares Unearned Employee Stock Ownership Plan Shares At end of year At beginning of year (Increase) Decrease TOTAL STOCKHOLDERS' EQUITY Balance Balance Balance Balance TOTAL STOCKHOLDERS' EQUITY Common stock Balance Balance Common Stock, Value, Issued, Total TOTAL LIABILITIES AND STOCKHOLDERS' EQUITY TOTAL LIABILITIES AND STOCKHOLDERS' EQUITY Common stock, par value Common stock, shares authorized Common stock, shares issued Common Stock, Shares, Issued, Total Common stock, shares outstanding Common Stock, Shares, Outstanding, Ending Balance Common Stock, Shares, Outstanding, Beginning Balance Treasury stock, shares Treasury Stock, Shares, Ending Balance Treasury Stock, Shares, Beginning Balance CONSOLIDATED STATEMENTS OF INCOME REVENUES Revenue Total, revenues Cost of services Cost of Services, Total General and administrative expenses General and Administrative Expense, Total OPERATING INCOME Operating Income OPERATING INCOME Interest Expense Interest expense Interest Expense, Total Interest income Other income (expense), net Other Nonoperating Income (Expense), Total Other (expense) income, net INCOME FROM CONTINUING OPERATIONS BEFORE INCOME TAXES INCOME FROM OPERATIONS BEFORE INCOME TAXES Provision for income taxes Provision for income taxes Income Tax Expense (Benefit), Total Net income NET INCOME NET INCOME BASIC EARNINGS (LOSS) PER SHARE: BASIC EARNINGS PER SHARE: Basic earnings per share Earnings Per Share, Basic, Total Weighted Average Number of Shares Outstanding, Basic Weighted Average Number of Shares Outstanding, Basic, Total Weighted average common shares outstanding DILUTED EARNINGS (LOSS) PER SHARE: DILUTED EARNINGS PER SHARE: Diluted earnings per share Earnings Per Share, Diluted, Total Weighted Average Number of Shares Outstanding, Diluted Weighted Average Number of Shares Outstanding, Diluted, Total Weighted average common shares outstanding CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME OTHER COMPREHENSIVE INCOME (LOSS): Translation adjustments, net of tax Other Comprehensive Income, Foreign Currency Transaction and Translation Adjustment, Net of Tax, Total Actuarial gain on defined benefit pension plans, net of tax Actuarial gainloss on defined benefit pension plans, net of tax Total other comprehensive loss Total other comprehensive income (loss) COMPREHENSIVE INCOME COMPREHENSIVE INCOME CONSOLIDATED STATEMENTS OF CHANGES IN STOCKHOLDERS' EQUITY Stock Issued During Period, Value, Stock Options Exercised Stock option exercises Tax (deficiency) benefit associated with any share-based compensation plan other than an employee stock ownership plan (ESOP). Tax (Deficiency) Benefit From The Exercise Of Stock Options Tax (deficiency) benefit from the exercise of stock options Adjustments to Additional Paid in Capital, Share-based Compensation, Requisite Service Period Recognition, Value Stock option expense Stock Issued During Period, Value, Conversion of Convertible Securities Conversion Class B to Class A common stock Stock Issued During Period, Value, Employee Stock Ownership Plan Contribution of Class A common stock to Employee Stock Ownership Plan (ESOP) Treasury Stock, Value, Acquired, Cost Method Treasury stock acquired Amortization of ESOP Award (Increase) decrease CONSOLIDATED STATEMENTS OF CASH FLOWS CASH FLOWS FROM OPERATING ACTIVITIES: Adjustments to reconcile net income to net cash provided by operating activities: Share-based Compensation Share-based Compensation, Total Stock-based compensation Excess Tax Benefit from Share-based Compensation, Operating Activities Excess tax benefits from the exercise of stock options Deferred income taxes Deferred Income Tax Expense (Benefit), Total Depreciation and amortization Depreciation, Depletion and Amortization, Nonproduction, Total Change in assets and liabilities-net of effects from acquired businesses: Increase (Decrease) in Receivables Receivables-net Increase (Decrease) in Receivables, Total Increase (Decrease) in Prepaid, Deferred Expense and Other Assets Prepaid expenses and other Increase (Decrease) in Prepaid, Deferred Expense and Other Assets, Total Increase (Decrease) in Accounts Payable and Accrued Liabilities Increase (Decrease) in Accounts Payable and Accrued Liabilities, Total Accounts payable and accrued expenses Net change during the period in the amount payable for obligations related to services received from employees, such as accrued salaries and bonus, payroll taxes and fringe benefits. Increase Decrease In Accrued Salaries And Related Expenses Accrued salaries and related expenses Increase (Decrease) in Billing in Excess of Cost of Earnings Billings in excess of revenue earned Increase (Decrease) in Pension and Postretirement Obligations Increase (Decrease) in Pension and Postretirement Obligations, Total Accrued retirement Other Other Net cash flow from operating activities Net cash flow from operating activities CASH FLOWS FROM INVESTING ACTIVITIES: Purchases of property and equipment Purchases of property and equipment Payments to Acquire Property, Plant, and Equipment, Total Investment in capitalized software for internal use Investment in capitalized software for internal use Payments for Software, Total Proceeds from Collection of Notes Receivable Proceeds from note receivable Acquisition of businesses-net of cash acquired Acquisition of businesses, net of cash acquired Payments to Acquire Businesses, Net of Cash Acquired, Total Net cash flow from investing activities Net cash flow from investing activities CASH FLOWS FROM FINANCING ACTIVITIES: Proceeds from exercise of stock options Excess tax benefits from the exercise of stock options The net cash inflow (outflow) from the revolving credit facility, a contractual agreement with the lender under which borrowings can be made up to a specific amount at any point in time. Net borrowings (repayment) under the revolving credit facility Net borrowings (repayments) under the revolving credit facility Net repayments under the revolving credit facility Issuance of senior notes Proceeds from Issuance of Long-term Debt, Total Debt issuance costs Debt issuance costs Net cash flow from financing activities Net cash flow from financing activities NET INCREASE IN CASH AND CASH EQUIVALENTS NET INCREASE (DECREASE) IN CASH AND CASH EQUIVALENTS Noncash financing activities: The amount of noncash contributions to the ESOP. Employee Stock Ownership Plan Noncash Contribution ESOP Contributions Description Of The Business [Abstract] Description of the Business Nature Od Operations Description of the Business Summary of Significant Accounting Policies Significant Accounting Policies [Text Block] Summary of Significant Accounting Policies Acquisitions Business Combination Disclosure Text Block Acquisitions Earnings per Share Earnings Per Share [Text Block] Earnings Per Share Earnings per Share Revenues and Receivables Loans Notes Trade And Other Receivables Disclosure Text Block Revenues and Receivables Property and Equipment Property Plant And Equipment Disclosure Text Block Property and Equipment Goodwill and Other Intangibles Goodwill and Intangible Assets Disclosure [Text Block] Goodwill and Other Intangibles Long-term Debt Debt Disclosure Text Block Long-term Debt Commitments and Contingencies Abstract Commitments and Contingencies Commitments and Contingencies Disclosure [Text Block] Commitments and Contingencies Stockholders' Equity and Stock Options [Abstract] Stockholders' Equity and Stock Options Stockholders Equity and Stock Options [Text Block] Stockholders Equity and Stock Options [Text Block] Stockholders' Equity and Stock Options Retirement Plans Pension and Other Postretirement Benefits Disclosure [Text Block] Retirement Plans Income Taxes Income Tax Disclosure [Text Block] Income Taxes Business Segment and Geographic Area Information Segment Reporting Disclosure [Text Block] Business Segment and Geographic Area Information Investments This item represents the entire disclose related to Investments. Investments [Text Block] Investments Quarterly Financial Data Quarterly Financial Information [Text Block] Quarterly Financial Data Subsequent Event [Abstract] Subsequent Event Schedule Of Subsequent Events Text Block Subsequent Event Valuation and Qualifying Accounts Schedule of Valuation and Qualifying Accounts Disclosure [Text Block] Valuation and Qualifying Accounts Statement, Scenario [Axis] Scenario, Unspecified [Domain] Scenario, Actual [Member] Additional Paid-In Capital [Member] Treasury Stock, at cost [Member] Retained Earnings [Member] Accumulated Other Comprehensive (Loss) Income [Member] Unearned ESOP Shares [Member] Unearned ESOP Shares [Member]