Income Taxes - Additional Information (Detail) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Income Tax Disclosure [Abstract]
Operating loss carryforwards	$ 21.4
Carryforward period	5 years
Deferred tax assets, capital loss carryforwards, not subject to expiration	$ 2.4
Deferred tax assets, capital loss carryforwards, subject to expiration	$ 0.1
Deferred tax assets, capital loss carryforwards, subject to expiration, period	4 years
U.S. statutory tax rate	21.00%	21.00%	21.00%