Income Taxes - Income tax provision from operations included in consolidated statements of operations (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015
Current:
Federal	$ 691	$ 387
State	(1)	3
Total current tax	690	390
Deferred:
Federal	27	1,741
State
Total deferred	27	1,741
Income tax provision, total	$ 717	$ 2,131