Income Taxes - Income Taxes Provision (Benefit) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Income Tax Disclosure [Abstract]
Federal, current	$ 0	$ 0	$ (258)
Federal, deferred	(4,297)	(5,608)	222
Federal, total	(4,297)	(5,608)	(36)
State, current	6	6	6
State, deferred	62	853	88
State, total	68	859	94
Foreign, current	4,930	2,453	2,022
Foreign, deferred	8	1,944	311
Foreign, total	4,938	4,397	2,333
Valuation allowance	3,894	4,698	(239)
Tax provision	$ 4,603	$ 4,346	$ 2,152