CONDENSED CONSOLIDATED BALANCE SHEETS (Unaudited) - USD ($) $ in Thousands	Sep. 30, 2015	Dec. 31, 2014
Current assets
Cash and cash equivalents	$ 214,443	$ 220,534
Time deposits	30,000	0
Accounts receivable, net of allowance of $2,216 and $2,181, respectively	125,683	124,483
Unbilled revenues	104,860	55,851
Prepaid and other current assets	20,205	9,289
Employee loans, net of allowance of $0 and $0, respectively, current	2,760	2,434
Deferred tax assets, current	2,109	2,496
Total current assets	500,060	415,087
Property and equipment, net	60,552	55,134
Restricted cash, long-term	187	156
Employee loans, net of allowance of $0 and $0, respectively, long-term	4,177	4,081
Intangible assets, net	37,176	47,689
Goodwill	84,229	57,417
Deferred tax assets, long-term	14,006	11,094
Other long-term assets	3,341	3,368
Total assets	703,728	594,026
Current liabilities
Accounts payable	12,061	4,641
Accrued expenses and other liabilities	42,487	32,203
Deferred revenue, current	2,345	3,220
Due to employees	28,666	24,518
Taxes payable	26,401	24,704
Contingent consideration, current (Note 2 and 4)	0	35,524
Deferred tax liabilities, current	408	603
Total current liabilities	112,368	125,413
Long-term debt	15,000	0
Deferred tax liabilities, long-term	3,492	4,563
Total liabilities	$ 130,860	$ 129,976
Commitments and contingencies (Note 9)
Stockholders’ equity
Common stock, $0.001 par value; 160,000,000 authorized; 49,857,284 and 48,748,298 shares issued, 49,848,259 and 48,303,811 shares outstanding at September 30, 2015 and December 31, 2014, respectively	$ 49	$ 48
Additional paid-in capital	284,938	229,501
Retained earnings	317,412	260,598
Treasury stock	(80)	(4,043)
Accumulated other comprehensive loss	(29,451)	(22,054)
Total stockholders’ equity	572,868	464,050
Total liabilities and stockholders’ equity	$ 703,728	$ 594,026