Consolidated Balance Sheets - USD ($) $ in Thousands		Dec. 31, 2016	Dec. 31, 2015
Current assets
Cash and cash equivalents		$ 216,158	$ 149,760
Accounts receivable:
Billed receivables		365,385	405,000
Unbilled receivables		288,331	280,538
Allowance for doubtful accounts and unbilled services		(178,819)	(185,754)
Accounts receivable, net		474,897	499,784
Current portion of notes receivable		31,864	36,115
Prepaid expenses and other current assets		60,252	55,966
Total current assets		783,171	741,625
Property and equipment, net of accumulated depreciation		61,856	74,760
Goodwill		1,180,001	1,198,298
Other intangible assets, net of amortization		52,120	63,935
Notes receivable, net of current portion		104,524	106,882
Other assets		43,696	43,518
Total assets		2,225,368	2,229,018
Current liabilities
Accounts payable, accrued expenses and other		87,320	89,845
Accrued compensation		261,500	227,783
Billings in excess of services provided		29,635	29,449
Total current liabilities		378,455	347,077
Long-term debt, net	[1]	365,528	494,772
Deferred income taxes		173,799	139,787
Other liabilities		100,228	99,779
Total liabilities		1,018,010	1,081,415
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 — 42,037 (2016) and 41,234 (2015)		420	412
Additional paid-in capital		416,816	400,705
Retained earnings		941,001	855,481
Accumulated other comprehensive loss		(150,879)	(108,995)
Total stockholders' equity		1,207,358	1,147,603
Total liabilities and stockholders' equity		$ 2,225,368	$ 2,229,018

[1] There were no current portions of long-term debt as of December 31, 2016 and 2015.