CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (LOSS) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2016	Mar. 31, 2015
CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE LOSS
Net income (loss)	$ 6,639	$ (4,231)
Other comprehensive income (loss):
Foreign currency translation adjustment, net of tax	391	(180)
Net unrealized gains on available-for-sale investments, net of tax	74	25
Total other comprehensive income (loss)	465	(155)
Comprehensive income (loss)	$ 7,104	$ (4,386)