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Income Taxes - Schedule of Income Tax Provision Differed from Amounts Computed at the Statutory Federal Income Tax Rate (Details) - USD ($) $ in Thousands	1 Months Ended	12 Months Ended
	Oct. 31, 2017	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Income Tax Disclosure [Abstract]
Income tax provision at statutory rate		$ (99,808)	$ 11,955	$ 42,757
Tax effect of pre-Separation earnings		0	0	(16,210)
State income taxes, net of federal income tax benefit		(5,374)	2,668	2,294
Book impairment and other permanent differences		71,650	0	0
Effect of change in apportionment factors		928	3,467	0
Write-off of permanent outside basis difference	$ (51,000)	0	0	(50,687)
Effect of U.S. federal tax rate change		0	0	(80,298)
Other, net		2,649	30	(137)
Income tax (benefit) expense		$ (29,955)	$ 18,120	$ (102,281)
Income tax provision at statutory rate, percent		21.00%	21.00%	35.00%
Tax effect of pre-Separation earnings, percent		0.00%	0.00%	(13.30%)
State income taxes, net of federal income tax benefit, percent		1.10%	4.70%	1.90%
Book impairment and other permanent differences, percent		(15.10%)	0.00%	0.00%
Effect of change in apportionment factors, percent		(0.20%)	6.10%	0.00%
Write-off of permanent outside basis difference, percent		0.00%	0.00%	(41.50%)
Effect of U.S. federal tax rate change, percent		0.00%	0.00%	(65.70%)
Other, net, percent		(0.50%)	0.00%	(0.10%)
Income tax (benefit) expense, percent		6.30%	31.80%	(83.70%)

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