Condensed Consolidated Balance Sheets - USD ($) $ in Thousands	Sep. 30, 2015	Dec. 31, 2014
Current assets:
Cash and cash equivalents	$ 226,688	$ 215,137
Receivables, net	279,083	290,397
Prepaid expenses	15,302	14,896
Other current assets	33,710	29,656
Total current assets	554,783	550,086
Property and equipment, net	111,040	109,880
Goodwill, net	196,912	193,831
Intangibles, net	54,903	60,620
Deferred charges and other assets	26,977	30,083
Total assets	944,615	944,500
Current liabilities:
Accounts payable	23,148	25,523
Accrued employee compensation and benefits	84,452	82,072
Current deferred income tax liabilities	217	144
Income taxes payable	2,572	3,662
Deferred revenue	30,836	34,245
Other accrued expenses and current liabilities	24,305	22,216
Total current liabilities	165,530	167,862
Deferred grants	4,944	5,110
Long-term debt	70,000	75,000
Long-term income tax liabilities	18,989	20,630
Other long-term liabilities	22,394	17,680
Total liabilities	$ 281,857	$ 286,282
Commitments and loss contingency (Note 15)
Shareholders' equity:
Preferred stock, $0.01 par value per share, 10,000 shares authorized; no shares issued and outstanding
Common stock, $0.01 par value per share, 200,000 shares authorized; 42,761 and 43,291 shares issued, respectively	$ 428	$ 433
Additional paid-in capital	272,703	279,288
Retained earnings	438,289	400,514
Accumulated other comprehensive income (loss)	(47,040)	(20,561)
Treasury stock at cost: 139 and 132 shares, respectively	(1,622)	(1,456)
Total shareholders' equity	662,758	658,218
Total liabilities and shareholders' equity	$ 944,615	$ 944,500