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Income Taxes - Additional Information (Detail) - USD ($)	Dec. 31, 2020	Nov. 19, 2020	Dec. 31, 2019
Income Tax Contingency [Line Items]
Valuation allowance	$ 565,400,000		$ 2,900,000
Unrecognized tax benefits	0		$ 0
Federal
Income Tax Contingency [Line Items]
Net operating loss	141,800,000	$ 1,400,000,000
State
Income Tax Contingency [Line Items]
Net operating loss	$ 148,100,000

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Amount of operating loss carryforward, before tax effects, available to reduce future taxable income under enacted tax laws.

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The portion of the valuation allowance pertaining to the deferred tax asset representing potential future taxable deductions from net operating loss carryforwards for which it is more likely than not that a tax benefit will not be realized.

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Amount of unrecognized tax benefits.

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