Condensed Consolidated Balance Sheets - USD ($) $ in Thousands	Mar. 31, 2017	Dec. 31, 2016
Current assets
Cash and cash equivalents	$ 120,959	$ 216,158
Accounts receivable:
Billed receivables	383,268	365,385
Unbilled receivables	330,062	288,331
Allowance for doubtful accounts and unbilled services	(187,150)	(178,819)
Accounts receivable, net	526,180	474,897
Current portion of notes receivable	29,314	31,864
Prepaid expenses and other current assets	60,683	60,252
Total current assets	737,136	783,171
Property and equipment, net of accumulated depreciation	59,474	61,856
Goodwill	1,183,627	1,180,001
Other intangible assets, net of amortization	49,895	52,120
Notes receivable, net of current portion	100,288	104,524
Other assets	42,142	43,696
Total assets	2,172,562	2,225,368
Current liabilities
Accounts payable, accrued expenses and other	87,411	87,320
Accrued compensation	172,593	261,500
Billings in excess of services provided	33,324	29,635
Total current liabilities	293,328	378,455
Long-term debt, net	402,717	365,528
Deferred income taxes	177,339	173,799
Other liabilities	102,649	100,228
Total liabilities	976,033	1,018,010
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 — 41,321 (2017) and 42,037 (2016)	413	420
Additional paid-in capital	387,797	416,816
Retained earnings	951,828	941,001
Accumulated other comprehensive loss	(143,509)	(150,879)
Total stockholders' equity	1,196,529	1,207,358
Total liabilities and stockholders' equity	$ 2,172,562	$ 2,225,368