Leases - Schedule of Components of Operating Lease Expense (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Lease Cost [Line Items]
Total operating lease cost	$ 14,751	$ 13,196	$ 13,175
Other, net [Member]
Lease Cost [Line Items]
Operating lease cost for subleased/assigned properties	0	0	469
Sublease income	0	0	(405)
Occupancy [Member]
Lease Cost [Line Items]
Operating lease cost - office space	11,034	12,861	13,015
Variable lease costs	3,327	237	96
Technology and Communications [Member]
Lease Cost [Line Items]
Operating lease cost - equipment	$ 390	$ 98	$ 0