Income Taxes (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Operating Loss Carryforwards [Line Items]
Loss before income taxes	$ (16,340)	$ (19,920)	$ (15,622)
U.S.
Operating Loss Carryforwards [Line Items]
Loss before income taxes	(16,235)	(18,078)	(15,622)
Non U.S.
Operating Loss Carryforwards [Line Items]
Loss before income taxes	$ (105)	$ (1,842)	$ 0