Leases - Schedule of Components of Lease Expense (Detail) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2022	Sep. 30, 2021	Sep. 30, 2022	Sep. 30, 2021
Lease Cost [Line Items]
Net lease cost	$ 3,323	$ 3,266	$ 10,053	$ 9,937
Other, net [Member]
Lease Cost [Line Items]
Operating lease cost for subleased/assigned properties	0	507	469	1,548
Sublease income subleased/assigned properties	0	(512)	(405)	(1,559)
Occupancy [Member]
Lease Cost [Line Items]
Operating lease cost	3,274	3,269	9,929	9,939
Variable lease costs	$ 49	$ 2	$ 60	$ 9