CONDENSED CONSOLIDATED BALANCE SHEETS (Unaudited) - USD ($) $ in Thousands	Sep. 30, 2016	Dec. 31, 2015
Current assets
Cash and cash equivalents	$ 330,627	$ 199,449
Time deposits	0	30,181
Accounts receivable, net of allowance of $2,301 and $1,729, respectively	187,833	174,617
Unbilled revenues	82,360	95,808
Prepaid and other current assets	32,205	14,344
Employee loans, net of allowance of $0 and $0, respectively	2,698	2,689
Deferred tax assets	0	11,847
Total current assets	635,723	528,935
Property and equipment, net	70,284	60,499
Restricted cash	236	238
Employee loans, net of allowance of $0 and $0, respectively	3,283	3,649
Intangible assets, net	53,867	46,860
Goodwill	111,722	115,930
Deferred tax assets	26,598	18,312
Other long-term assets	7,486	4,113
Total assets	909,199	778,536
Current liabilities
Accounts payable	4,661	2,576
Accrued expenses and other liabilities	34,856	60,749
Deferred revenue	3,685	3,047
Due to employees	34,894	26,703
Deferred compensation due to employees	4,035	5,364
Contingent consideration (Note 4)	800	0
Taxes payable	39,499	29,472
Total current liabilities	122,430	127,911
Long-term debt	33,062	35,000
Deferred tax liabilities, long-term	3,327	2,402
Other long-term liabilities	268	0
Total liabilities	159,087	165,313
Commitments and contingencies (Note 9)
Stockholders’ equity
Common stock, $0.001 par value; 160,000,000 authorized; 51,035,509 and 50,177,044 shares issued, 51,016,500 and 50,166,537 shares outstanding at September 30, 2016 and December 31, 2015, respectively	50	49
Additional paid-in capital	363,154	303,363
Retained earnings	419,557	345,054
Treasury stock	(170)	(93)
Accumulated other comprehensive loss	(32,479)	(35,150)
Total stockholders’ equity	750,112	613,223
Total liabilities and stockholders’ equity	$ 909,199	$ 778,536