Income Taxes (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2017	Jun. 30, 2016	Jun. 30, 2017	Jun. 30, 2016	Dec. 31, 2016
Income Tax Disclosure [Abstract]
Income tax expense (benefit)	$ 29	$ 51	$ 23	$ 57
Income Taxes (Textual) [Abstract]
Unrecognized tax benefits	9,300		9,300		$ 9,200
Unrecognized tax benefits that would impact effective tax rate	357		357		364
Accrued for interest and penalties	$ 52		52		$ 62
Reduction in gross unrecognized tax benefits			$ 10