CONDENSED CONSOLIDATED STATEMENT OF STOCKHOLDERS' EQUITY AND COMPREHENSIVE INCOME (USD $) In Thousands	Total	Common Stock	Common Stock Warrants	Treasury Stock	Additional Paid-in Capital	Retained Earnings	Accumulated Other Comprehensive Income (Loss)
Beginning Balance at Dec. 31, 2010	$ 255,623	$ 204	$ 24,003	$ (171,676)	$ 312,947	$ 105,289	$ (15,144)
Comprehensive income information:
Net income	21,961					21,961
Other comprehensive income:
Unrealized gain on available-for-sale securities	151						151
Foreign currency translation adjustments	(908)						(908)
Comprehensive income	21,204
Stock-based compensation	6,691				6,691
Shares issued and forfeited, net, under stock plans including income tax benefits	4,925			5,797	(872)
Repurchase of restricted stock for tax withholdings	(678)			(678)
Ending Balance at Sep. 30, 2011	$ 287,765	$ 204	$ 24,003	$ (166,557)	$ 318,766	$ 127,250	$ (15,901)