CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (LOSS) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Statement of Comprehensive Income [Abstract]
Net income (loss)	$ 10,113	$ (3,834)	$ (16,327)
Other comprehensive income (loss), net of tax:
Foreign currency translation adjustment	(7,673)	(10,717)	2,410
Unrealized change on non-marketable securities (net of tax of $0, $290 and $290 for the years ended December 31, 2015, 2014 and 2013, respectively)	(68)	(154)	476
Unrealized change on cash flow hedges (net of tax of $0, $154 and $0 for the years ended December 31, 2015, 2014 and 2013, respectively)	(1,027)	1,867	(796)
Net change in other comprehensive income (loss), net of tax	(8,768)	(9,004)	2,090
Comprehensive income (loss)	$ 1,345	$ (12,838)	$ (14,237)