Other Income (Expense), Net (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Other Income and Expenses [Abstract]
Interest income	$ 39	$ 1	$ 5
Gain (loss) on foreign currency transactions	(310)	(133)	441
Other (expense) income, net	5	84	225
Total	$ (266)	$ (48)	$ 671