Income Taxes (Details) - USD ($) $ in Thousands	3 Months Ended	9 Months Ended
Sep. 30, 2018	Sep. 30, 2017	Sep. 30, 2018	Sep. 30, 2017	Dec. 31, 2017
Income Tax Disclosure [Abstract]
Current	$ 0	$ 0	$ 439	$ 0
Deferred	(466)	(2,869)	1,360	178
Total income tax (expense) benefit	(466)	$ (2,869)	1,799	$ 178
Net deferred tax assets	$ 30,366		$ 30,366		$ 29,006

Amount of current income tax expense (benefit) pertaining to taxable income (loss) from continuing operations.

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Amount of deferred income tax expense (benefit) pertaining to income (loss) from continuing operations.

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Amount of current income tax expense (benefit) and deferred income tax expense (benefit) pertaining to continuing operations.

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