Consolidated Statements of Comprehensive Income (Unaudited) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2016	Jun. 30, 2015	Jun. 30, 2016	Jun. 30, 2015
Statement of Comprehensive Income [Abstract]
Net income (loss)	$ (806)	$ 37	$ (3,597)	$ (1,385)
Other comprehensive (loss) income, net of tax:
Unrealized loss on available-for-sale securities	0	4	0	2
Foreign currency translation adjustment	(4,472)	3,570	(5,148)	(1,265)
Unrealized gain (loss) on derivative instruments	9	31	(11)	18
Other comprehensive (loss) income, net of tax	(4,463)	3,597	(5,159)	(1,249)
Total comprehensive (loss) income	$ (5,269)	$ 3,634	$ (8,756)	$ (2,634)