Income Taxes and Deferred Tax Asset/Liability - Income Tax Expense (Benefit) Components (Details) - USD ($) $ in Thousands	12 Months Ended
Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Income Tax Disclosure [Abstract]
Current tax expense	$ 1,182	$ 288	$ 118
Deferred tax (benefit) expense	(27,398)	1,450	0
Income tax (benefit) expense	$ (26,216)	$ 1,738	$ 118

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

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration