Condensed Consolidated Balance Sheets (Unaudited) (USD $) In Thousands, unless otherwise specified	Jun. 30, 2012	Dec. 31, 2011
Current assets:
Cash and cash equivalents	$ 54,161	$ 38,744
Accounts receivable, less allowance for doubtful accounts of $459 and $400 as of June 30, 2012 and December 31, 2011, respectively	15,236	13,340
Income tax receivable	2,493	3,625
Deposits	376	278
Prepaid expenses and other current assets	2,601	2,123
Deferred tax assets	1,755	1,754
Total current assets	76,622	59,864
Deposits, less current portion	1,038	776
Deferred tax assets, less current portion	344	344
Restricted cash	3,045	3,103
Property and equipment, net	3,711	3,557
Intangible assets, net	528	704
Total assets	85,288	68,348
Current liabilities:
Accounts payable	22,129	21,731
Accrued expenses	11,606	6,311
Deferred revenue	2,108	2,168
Income tax payable		279
Deferred rent	217	114
Total current liabilities	36,060	30,603
Long-term tax liabilities	2,001	2,225
Deferred rent, less current portion	929	761
Commitments and contingencies
Stockholders' equity:
Preferred stock, $0.01 par value per share (5,000 shares authorized; none issued)
Common stock, $0.01 par value (40,000 shares authorized; 16,462 shares issued and 15,962 shares outstanding as of June 30, 2012 and December 31, 2011)	164	164
Treasury stock (at cost, 0 and 500 shares at June 30, 2012 and December 31, 2011)		(15,123)
Additional paid-in capital	8,249	7,656
Retained earnings	39,369	43,484
Accumulated other comprehensive loss	(1,484)	(1,422)
Total stockholders' equity	46,298	34,759
Total liabilities and stockholders' equity	$ 85,288	$ 68,348