Condensed Consolidated Balance Sheets (Unaudited) - USD ($) $ in Thousands	Jun. 30, 2016	Dec. 31, 2015
Current assets
Cash and cash equivalents	$ 182,665	$ 149,760
Accounts receivable:
Billed receivables	415,750	405,000
Unbilled receivables	330,730	280,538
Allowance for doubtful accounts and unbilled services	(199,182)	(185,754)
Accounts receivable, net	547,298	499,784
Current portion of notes receivable	34,418	36,115
Prepaid expenses and other current assets	47,361	55,966
Total current assets	811,742	741,625
Property and equipment, net of accumulated depreciation	68,764	74,760
Goodwill	1,189,602	1,198,298
Other intangible assets, net of amortization	57,568	63,935
Notes receivable, net of current portion	112,095	106,882
Other assets	47,693	43,518
Total assets	2,287,464	2,229,018
Current liabilities
Accounts payable, accrued expenses and other	94,782	89,845
Accrued compensation	193,826	227,783
Billings in excess of services provided	36,434	29,449
Total current liabilities	325,042	347,077
Long-term debt, net	495,150	494,772
Deferred income taxes	161,433	139,787
Other liabilities	102,596	99,779
Total liabilities	1,084,221	1,081,415
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 — 42,083 (2016) and 41,234 (2015)	420	412
Additional paid-in capital	418,776	400,705
Retained earnings	912,209	855,481
Accumulated other comprehensive loss	(128,162)	(108,995)
Total stockholders' equity	1,203,243	1,147,603
Total liabilities and stockholders' equity	$ 2,287,464	$ 2,229,018

Sum of the carrying values as of the balance sheet date of obligations incurred through that date and due within one year (or the operating cycle, if longer), including liabilities incurred (and for which invoices have typically been received) and payable to vendors for goods and services received, taxes, interest, rent and utilities, accrued salaries and bonuses, payroll taxes and fringe benefits.

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Period Type:	instant

- Definition

Amounts due from customers or clients, within one year of the balance sheet date (or the normal operating cycle, whichever is longer) for goods or services (including trade receivables) that have been delivered or sold in the normal course of business.