Income Taxes (Details 3) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Income Tax Disclosure [Abstract]
Beginning balance	$ 1,250	$ 1,957	$ 2,219
Increases in unrecognized tax benefits - prior year positions	0	0	0
Increases in unrecognized tax benefits - current year positions	49	75	263
Decreases in unrecognized tax benefits - prior year position	0	(782)	(525)
Ending balance	$ 1,299	$ 1,250	$ 1,957