Condensed Consolidated Statements of Comprehensive Income (Loss) (USD $) In Thousands, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 30, 2013	Jun. 30, 2012	Jun. 30, 2013	Jun. 30, 2012
Net income (loss)	$ 4,703	$ (2,267)	$ 13,772	$ 1,790
Other comprehensive loss:
Unrealized (loss) gain on securities, net of tax	(182)	(25)	(145)	47
Foreign currency translation adjustments	(417)	(1,341)	(2,487)	(67)
Total other comprehensive loss	(599)	(1,366)	(2,632)	(20)
Comprehensive income (loss)	$ 4,104	$ (3,633)	$ 11,140	$ 1,770