Accumulated Other Comprehensive Income (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Balance at beginning of period	$ 917	$ (306)	$ (550)
Other comprehensive (loss) income before reclassifications	5,633	2,780	244
Amounts reclassified from accumulated other comprehensive loss	(4,726)	(1,557)	0
Total changes in other comprehensive income (loss)	907	1,223	244
Balance at end of period	1,824	917	(306)
Foreign currency translation adjustment
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Balance at beginning of period	(971)	(325)	(746)
Other comprehensive (loss) income before reclassifications	(1,109)	(646)	421
Amounts reclassified from accumulated other comprehensive loss	0	0	0
Total changes in other comprehensive income (loss)	(1,109)	(646)	421
Balance at end of period	(2,080)	(971)	(325)
Unrealized holding gains (losses) on marketable securities
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Balance at beginning of period	(123)	42	196
Other comprehensive (loss) income before reclassifications	249	(165)	(154)
Amounts reclassified from accumulated other comprehensive loss	0	0	0
Total changes in other comprehensive income (loss)	249	(165)	(154)
Balance at end of period	126	(123)	42
Unrealized (losses) gains on foreign currency forward contracts, net of tax
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Balance at beginning of period	2,011	(23)	0
Other comprehensive (loss) income before reclassifications	6,493	3,591	(23)
Amounts reclassified from accumulated other comprehensive loss	(4,726)	(1,557)	0
Total changes in other comprehensive income (loss)	1,767	2,034	(23)
Balance at end of period	$ 3,778	$ 2,011	$ (23)