Condensed Consolidated Statements of Comprehensive Income (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)	$ 8,710	$ (331)	$ 22,482	$ 1,459
Other comprehensive income (loss):
Unrealized gain (loss) on securities, net of tax	113	33	(32)	80
Foreign currency translation adjustments	2,340	1,315	(147)	1,248
Total other comprehensive income (loss)	2,453	1,348	(179)	1,328
Comprehensive income	$ 11,163	$ 1,017	$ 22,303	$ 2,787