Leases - Schedule of Components of Lease Expense (Detail) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2022	Jun. 30, 2021	Jun. 30, 2022	Jun. 30, 2021
Lease Cost [Line Items]
Net lease cost	$ 3,347	$ 3,348	$ 6,730	$ 6,671
Other, net [Member]
Lease Cost [Line Items]
Operating lease cost for subleased/assigned properties	13	544	469	1,041
Sublease income subleased/assigned properties	(15)	(544)	(405)	(1,047)
Occupancy [Member]
Lease Cost [Line Items]
Operating lease cost	3,345	3,346	6,655	6,669
Variable lease costs	$ 4	$ 2	$ 11	$ 8