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Income Taxes - Schedule of Differences Between Effective Rate and United States Federal Income Tax Statutory Rate (Detail)	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Income Tax Disclosure [Abstract]
Tax at statutory rate	21.00%	21.00%	35.00%
State income tax, net of federal benefit	3.85%	4.35%	3.38%
Non-deductible expenses	(0.22%)	0.42%	0.48%
Change in accrual estimates relating to uncertain tax positions	0.36%	0.02%
Capital loss on liquidation	1.79%
Change in valuation allowance	(1.73%)
Impairments	(17.16%)
Other, net	(0.49%)	1.70%	0.10%
Change in tax law		(0.32%)	(18.16%)
Income tax provision	7.40%	27.17%	20.80%

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Effective income tax reconciliation capital loss on liquidation percentage.

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

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Percentage of domestic federal statutory tax rate applicable to pretax income (loss).

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Percentage of the difference between reported income tax expense (benefit) and expected income tax expense (benefit) computed by applying the domestic federal statutory income tax rates to pretax income (loss) from continuing operations attributable to changes in the valuation allowance for deferred tax assets.

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Percentage of the difference between reported income tax expense (benefit) and expected income tax expense (benefit) computed by applying the domestic federal statutory income tax rates to pretax income (loss) from continuing operations applicable to state and local income tax expense (benefit), net of federal tax expense (benefit).

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