Consolidated Statements of Comprehensive Income (Loss) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Statement of Comprehensive Income [Abstract]
Net income (loss)	$ (41,276)	$ 41,798	$ (85,469)
Other comprehensive income (loss), net of tax:
Foreign currency translation loss	(1,024)	(15,087)	(18,040)
Net other comprehensive income (loss) on marketable securities, net of $16, ($20), ($0) tax, respectively	116	(147)	(198)
Total other comprehensive loss, net of tax	(908)	(15,234)	(18,238)
Total comprehensive (loss) income	$ (42,184)	$ 26,564	$ (103,707)