Debt - Unamortized Deferred Financing Costs - Additional Information (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019
Line Of Credit Facility [Line Items]
Amortization and write-off of deferred financing costs	$ 3,272	$ 1,174
Successor Credit Facility [Member]
Line Of Credit Facility [Line Items]
Unamortized deferred financing costs	1,600
Revolving Credit Facility [Member]
Line Of Credit Facility [Line Items]
Amortization and write-off of deferred financing costs	$ 2,400