The adjustment to reduce the value of existing agreements that specify the lessee's rights to use the leased property. This expense is charged when the estimates of future profits generated by the leased property are reduced.

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Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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Amount of loss from impairment of right-of-use asset from operating lease.

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Leases - Additional Information (Detail) - USD ($) $ in Millions	1 Months Ended	3 Months Ended	12 Months Ended
	May 31, 2023	Dec. 31, 2022	Dec. 31, 2023	Dec. 31, 2022
Lessee Lease Description [Line Items]
ROU asset impairments and accelerated amortization	$ 1.3	$ 3.7
Leasehold impairments	$ 0.6	$ 1.3
Leasehold Improvements [Member]
Lessee Lease Description [Line Items]
ROU asset impairments and accelerated amortization			$ 1.9
Leasehold impairments			$ 0.7
Leasehold Improvements [Member] \| California [Member]
Lessee Lease Description [Line Items]
ROU asset impairments and accelerated amortization				$ 3.7
Leasehold impairments				$ 1.3