Condensed Consolidated Statements of Comprehensive Income (Loss) (USD $) In Thousands, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 30, 2013	Sep. 30, 2012	Sep. 30, 2013	Sep. 30, 2012
Net income (loss)	$ (9,363)	$ 723	$ (29,887)	$ (14,541)
Foreign currency translation adjustments	533	(190)	1,394	(537)
Unrealized gains (losses) on investments, net of tax of $0	3	163	(51)	399
Comprehensive income (loss)	$ (8,827)	$ 696	$ (28,544)	$ (14,679)