Property and Equipment, Net - Summary of Premises and Equipment (Detail) - USD ($) $ in Thousands	Dec. 31, 2025	Dec. 31, 2024
Property, Plant and Equipment [Line Items]
Property and equipment	$ 70,901	$ 74,919
Accumulated depreciation and amortization	(47,429)	(53,241)
Property and equipment, net	23,472	21,678
Computers, related equipment and software [Member]
Property, Plant and Equipment [Line Items]
Property and equipment	29,165	32,383
Leasehold Improvements [Member]
Property, Plant and Equipment [Line Items]
Property and equipment	32,328	32,254
Furniture and fixtures [Member]
Property, Plant and Equipment [Line Items]
Property and equipment	8,615	8,665
Assets under Construction [Member]
Property, Plant and Equipment [Line Items]
Property and equipment	$ 793	$ 1,617