Consolidated Statements of Comprehensive Income - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Net income	$ 52,720	$ 35,172	$ 35,495
Other comprehensive loss, net of tax:
Foreign currency translation adjustments, net of $0 tax in 2016, 2015 and 2014	(5,033)	(4,166)	(609)
Change in unrealized gain (loss) on available-for-sale securities, net of $0 tax in 2016, 2015 and 2014	(648)	(179)	160
Total other comprehensive loss, net of tax	(5,681)	(4,345)	(449)
Comprehensive income	$ 47,039	$ 30,827	$ 35,046