Condensed Consolidated Balance Sheets (USD $)
In Thousands, unless otherwise specified
Mar. 31, 2015
Dec. 31, 2014
Current assets    
Cash and cash equivalents $ 225,295 $ 283,680
Accounts receivable:    
Billed receivables 382,333 381,464
Unbilled receivables 290,297 248,462
Allowance for doubtful accounts and unbilled services (159,345) (144,825)
Accounts receivable, net 513,285 485,101
Current portion of notes receivable 33,393 27,208
Prepaid expenses and other current assets 51,121 60,852
Current portion of deferred tax assets 24,840 27,332
Total current assets 847,934 884,173
Property and equipment, net of accumulated depreciation 79,389 82,163
Goodwill 1,201,652 1,211,689
Other intangible assets, net of amortization 72,264 77,034
Notes receivable, net of current portion 115,263 122,149
Other assets 54,867 53,319
Total assets 2,371,369 2,430,527
Current liabilities    
Accounts payable, accrued expenses and other 102,231 99,494
Accrued compensation 147,030 220,959
Current portion of long-term debt 11,000 11,000
Billings in excess of services provided 30,894 35,639
Total current liabilities 291,155 367,092
Long-term debt, net of current portion 700,000 700,000
Deferred income taxes 167,463 161,932
Other liabilities 95,497 98,757
Total liabilities 1,254,115 1,327,781
Commitments and contingent liabilities (note 10)      
Stockholders' equity    
Preferred stock, $0.01 par value; shares authorized-5,000; none outstanding      
Common stock, $0.01 par value; shares authorized-75,000; shares issued and outstanding-41,485 (2015) and 41,181 (2014) 415 412
Additional paid-in capital 404,475 393,174
Retained earnings 813,114 789,428
Accumulated other comprehensive loss (100,750) (80,268)
Total stockholders' equity 1,117,254 1,102,746
Total liabilities and stockholders' equity $ 2,371,369 $ 2,430,527