Income Taxes (Detail) $ in Millions	3 Months Ended
Mar. 31, 2022 USD ($)
Income Tax Disclosure [Abstract]
Deferred income tax benefit	$ 0.5
Release of valuation allowance	$ 0.7

Amount of deferred income tax expense (benefit) pertaining to income (loss) from continuing operations.

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Name:	us-gaap_DeferredIncomeTaxExpenseBenefit
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration