Income Taxes - Additional Information (Detail) - USD ($)	12 Months Ended
	Dec. 31, 2021	Aug. 10, 2021	Dec. 31, 2020	Dec. 31, 2019
Income Tax Disclosure [Abstract]
Deferred tax asset related to investments	$ 102,300,000		$ 39,000,000.0	$ 49,800,000
Additions to deferred tax asset	117,300,000	$ 89,000,000.0	$ 42,800,000
Deferred tax asset related to U.S. federal net operating loss carryforwards	12,400,000
Deferred tax asset related to U.S. state net operating loss carryforwards	$ 2,600,000
Operating loss carryforward expiration year	2040
Unrecognized tax benefits	$ 0