Income Taxes - Difference between Income Taxes Computed at Federal Statutory Rate and Provision for Income Taxes (Details) - USD ($) $ in Thousands	1 Months Ended	11 Months Ended	12 Months Ended
	Dec. 31, 2020	Nov. 30, 2020	Dec. 31, 2019
Income Tax Disclosure [Abstract]
Expected income tax benefit at statutory rate	$ (150)	$ (25,791)	$ (24,258)
Permanent differences	2	4,895	(48)
State taxes, net of Federal benefit	16	(2,514)	307
Fresh start valuation adjustments	0	19,589	0
Gain on settlement of liabilities subject to compromise	0	(38,187)	0
Reduction in deferred tax assets	0	12,537	0
Return to provision adjustment	0	0	2,567
Change in valuation allowance	132	28,541	8,876
Net operating loss carryback	0	(3,749)
Other	0	0	61
Total income tax benefit	$ 0	$ (4,679)	$ (12,495)