CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (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 (loss) income	$ (1,553)	$ 7,271	$ 50,038	$ 7,543
Other comprehensive income (loss), net of applicable taxes:
Foreign currency translation adjustment	173	(512)	(811)	(224)
Unrealized loss on short-term investments	(1)	(24)	(4)	(5)
Total other comprehensive income (loss)	172	(536)	(815)	(229)
Comprehensive (loss) income	$ (1,381)	$ 6,735	$ 49,223	$ 7,314