Consolidated Statements of Comprehensive Income (Loss) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2017	Mar. 31, 2016
Consolidated Statements of Comprehensive Income (Loss)
Net income (loss)	$ 1,095	$ (15,533)
Other comprehensive income (loss), net of tax:
Unrealized gains (losses) on available-for-sale securities	(114)	50
Foreign currency translation	15	39
Total other comprehensive income (loss), net of tax	(99)	89
Total comprehensive income (loss)	$ 996	$ (15,444)