Income Taxes (Details 1) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Income Tax Disclosure [Abstract]
Current income tax expense (benefit), Federal	$ 0	$ 244	$ 212
Current income tax expense (benefit), State	36	508	226
Current income tax expense (benefit), Foreign	139	69	0
Total current income tax expense (benefit)	175	821	438
Deferred income tax expense (benefit), Federal	(2,916)	1,726	2,997
Deferred income tax expense (benefit), State	(175)	1,040	586
Deferred income tax expense (benefit), Foreign	0	0	0
Total deferred income tax expense (benefit)	(3,091)	2,766	3,583
Change in federal tax rate	11,693	0	0
Valuation allowance	16,662	(772)	(588)
Total income tax expense (benefit)	$ 25,439	$ 2,815	$ 3,433