CONSOLIDATED BALANCE SHEETS (USD $) In Thousands, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012
Current assets
Cash and cash equivalents	$ 169,207	$ 118,112
Accounts receivable, net of allowance of $1,800 and $2,203 respectively	95,431	78,906
Unbilled revenues	43,108	33,414
Prepaid and other current assets	14,355	11,835
Employee loans, net of allowance for loan losses of $0 and $0, respectively, current	1,989	429
Time deposits	1,188	1,006
Restricted cash, current	298	660
Deferred tax assets, current	5,392	6,593
Total current assets	330,968	250,955
Property and equipment, net	53,315	53,135
Restricted cash, long-term	225	467
Employee loans, net of allowance for loan losses of $0 and $0, respectively, long-term	4,401	0
Intangible assets, net	13,734	16,834
Goodwill	22,268	22,698
Deferred tax assets, long-term	4,557	6,093
Other long-term assets	3,409	632
Total assets	432,877	350,814
Current liabilities
Accounts payable	2,835	6,095
Accrued expenses and other liabilities	20,175	19,814
Deferred revenues, current	4,543	6,369
Due to employees	12,665	12,026
Taxes payable	14,171	14,557
Deferred tax liabilities, current	275	491
Total current liabilities	54,664	59,352
Deferred revenues, long-term	533	1,263
Taxes payable, long-term	1,228	1,228
Deferred tax liabilities, long-term	351	2,691
Total liabilities	56,776	64,534
Commitments and contingencies (See Note 16)
Stockholders' equity
Common stock, $0.001 par value; 160,000,000 authorized; 47,569,463 and 45,398,523 shares issued, 46,614,916 and 44,442,494 shares outstanding at December 31, 2013 and December 31, 2012, respectively	46	44
Additional paid-in capital	195,585	166,962
Retained earnings	190,986	128,992
Treasury stock	(8,684)	(8,697)
Accumulated other comprehensive loss	(1,832)	(1,021)
Total stockholders' equity	376,101	286,280
Total liabilities and stockholders' equity	$ 432,877	$ 350,814