CONDENSED CONSOLIDATED BALANCE SHEETS (Unaudited) - USD ($) $ in Thousands	Mar. 31, 2016	Dec. 31, 2015
Current assets
Cash and cash equivalents	$ 244,877	$ 199,449
Time deposits	0	30,181
Accounts receivable, net of allowance of $1,884 and $1,729, respectively	157,457	174,617
Unbilled revenues	115,428	95,808
Prepaid and other current assets	19,261	14,344
Employee loans, net of allowance of $0 and $0, respectively	2,646	2,689
Deferred tax assets	12,569	11,847
Total current assets	552,238	528,935
Property and equipment, net	64,294	60,499
Restricted cash, long-term	238	238
Employee loans, net of allowance of $0 and $0, respectively, long-term	3,239	3,649
Intangible assets, net	45,765	46,860
Goodwill	118,615	115,930
Deferred tax assets, long-term	18,441	18,312
Other long-term assets	5,035	4,113
Total assets	807,865	778,536
Current liabilities
Accounts payable	3,562	2,576
Accrued expenses and other liabilities	28,646	60,749
Deferred revenue	3,099	3,047
Due to employees	39,368	26,703
Deferred compensation to employees	6,924	5,364
Taxes payable	25,945	29,472
Total current liabilities	107,544	127,911
Long-term debt	40,116	35,000
Deferred tax liabilities, long-term	2,583	2,402
Total liabilities	$ 150,243	$ 165,313
Commitments and contingencies (Note 9)
Stockholders’ equity
Common stock, $0.001 par value; 160,000,000 authorized; 50,560,885 and 50,177,044 shares issued, 50,543,630 and 50,166,537 shares outstanding at March 31, 2016 and December 31, 2015, respectively	$ 49	$ 49
Additional paid-in capital	319,225	303,363
Retained earnings	368,953	345,054
Treasury stock	(154)	(93)
Accumulated other comprehensive loss	(30,451)	(35,150)
Total stockholders’ equity	657,622	613,223
Total liabilities and stockholders’ equity	$ 807,865	$ 778,536