Income Taxes - Schedule of Provision for Income Taxes (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Current:
State	$ 270	$ 350	$ 519
Federal	513	0	0
Foreign	2,336	2,772	2,572
Current income tax expense (benefit)	3,119	3,122	3,091
Deferred:
Foreign	(755)	69	(457)
Deferred income tax expense (benefit)	(755)	69	(457)
Income tax expense	$ 2,364	$ 3,191	$ 2,634