Income Taxes (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2019	Mar. 31, 2018	Dec. 31, 2018
Income Tax Disclosure [Abstract]
Current	$ 0	$ 439
Deferred	(346)	2,510
Total income tax (expense) benefit	(346)	$ 2,949
Net deferred tax assets	$ 31,851		$ 32,197