Income Taxes (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2019	Jun. 30, 2018	Jun. 30, 2019	Jun. 30, 2018	Dec. 31, 2018
Income Tax Disclosure [Abstract]
Current	$ 172	$ 0	$ 172	$ 439
Deferred	(851)	(684)	(1,197)	1,826
Total income tax (expense) benefit	(679)	$ (684)	(1,025)	$ 2,265
Net deferred tax assets	$ 30,999		$ 30,999		$ 32,197