Equity Offering - Additional Information (Detail) - USD ($)	Mar. 15, 2021	Dec. 31, 2020	Mar. 31, 2021
Class Of Stock [Line Items]
Percentage of ownership interest	8.80%	6.30%
Class A Shares
Class Of Stock [Line Items]
Underwritten public equity offering	6,900,000
Shares issued, price per share	$ 21.00
Proceeds from Issuance of public equity offering	$ 0
Net proceeds received by sponsors from public equity offering	139,900,000
Common unitholders	31,800,000	$ 125,000,000.0	$ 184,000,000.0
Additions to deferred tax asset	$ 26,400,000
Class A Shares | Maximum
Class Of Stock [Line Items]
Underwriters’ option to purchase additional shares	900,000
Class B Shares
Class Of Stock [Line Items]
Underwritten public equity offering	6,900,000