Consolidated Balance Sheets - USD ($) $ in Thousands	Mar. 31, 2017	Dec. 31, 2016
Current assets:
Cash and cash equivalents	$ 9,132	$ 8,291
Accounts receivable, net	264,874	261,755
Prepaid expenses and other current assets	30,646	29,762
Total current assets	304,652	299,808
Non-current assets:
Property and equipment, net	85,935	82,953
Intangible assets, net	26,433	28,727
Goodwill	628,377	625,027
Other assets	19,643	18,282
Total assets	1,065,040	1,054,797
Current liabilities:
Accounts payable	11,208	11,871
Accrued liabilities	13,407	16,144
Accrued compensation-related costs	57,668	106,779
Income tax payable	5,967	1,564
Other current liabilities	37,679	38,616
Total current liabilities	125,929	174,974
Non-current liabilities:
Deferred income tax liabilities	78,734	77,737
Other non-current liabilities	36,571	32,579
Bank debt non-current	178,336	135,030
Total non-current liabilities	293,641	245,346
Total liabilities	419,570	420,320
Stockholders' equity:
Common stock	57	57
Additional paid-in capital	648,941	644,519
Treasury stock	(186,322)	(181,361)
Retained earnings	207,139	196,468
Accumulated other comprehensive loss	(24,345)	(25,206)
Total stockholders' equity	645,470	634,477
Total liabilities and stockholders' equity	$ 1,065,040	$ 1,054,797