Income Taxes - Additional Information (Detail) - USD ($)		3 Months Ended		9 Months Ended
	Jun. 10, 2020	Sep. 30, 2020	Sep. 30, 2019	Sep. 30, 2020	Sep. 30, 2019
Income Tax Disclosure [Line Items]
Income tax expense (benefit)		$ 4,021,000	$ 40,745	$ 5,385,000	$ (58,320)
Effective income tax rate reconciliation, percent		(6.00%)	0.30%	(5.00%)	(0.10%)
Deferred tax assets, net	$ 89,900,000
Additional Paid-in Capital
Income Tax Disclosure [Line Items]
Income tax effects allocated directly to equity, equity transactions	1,900,000
Other Noncurrent Liabilities
Income Tax Disclosure [Line Items]
Deferred tax assets, net	$ 88,100,000