Consolidated Balance Sheets (Unaudited) - USD ($) $ in Thousands	Sep. 30, 2015	Dec. 31, 2014
Current assets:
Cash and cash equivalents	$ 13,462	$ 256,872
Receivables from clients, net	123,984	98,640
Unbilled services, net	82,447	91,392
Income tax receivable	4,778	8,125
Deferred income taxes, net	9,228	14,772
Prepaid expenses and other current assets	22,962	16,358
Total current assets	256,861	486,159
Property and equipment, net	47,457	44,677
Long-term investment	34,050	12,250
Other non-current assets	24,525	20,998
Intangible assets, net	102,450	24,684
Goodwill	806,801	567,146
Total assets	1,272,144	1,155,914
Current liabilities:
Accounts payable	9,718	11,085
Accrued expenses	25,227	17,315
Accrued payroll and related benefits	62,600	106,488
Current maturities of long-term debt	0	28,750
Deferred revenues	22,721	12,738
Total current liabilities	120,266	176,376
Non-current liabilities:
Deferred compensation and other liabilities	16,204	10,838
Long-term debt, net of current portion	419,426	327,852
Deferred lease incentives	14,535	13,359
Deferred income taxes, net	53,842	26,855
Total non-current liabilities	$ 504,007	$ 378,904
Commitments and contingencies
Stockholders’ equity
Common stock; $0.01 par value; 500,000,000 shares authorized; 25,142,424 and 24,976,395 shares issued at September 30, 2015 and December 31, 2014, respectively	$ 243	$ 241
Treasury stock, at cost, 2,207,972 and 2,097,173 shares at September 30, 2015 and December 31, 2014, respectively	(101,239)	(94,074)
Additional paid-in capital	453,317	442,308
Retained earnings	294,523	254,814
Accumulated other comprehensive income (loss)	1,027	(2,655)
Total stockholders’ equity	647,871	600,634
Total liabilities and stockholders’ equity	$ 1,272,144	$ 1,155,914