Business Segment Reporting - Additional Information (Detail)	3 Months Ended
	Mar. 31, 2025 Segment
Segment Reporting [Abstract]
Number of reportable segments	3
Segment Reporting, CODM, Individual Title and Position or Group Name [Extensible Enumeration]	srt:ChiefExecutiveOfficerMember, srt:ChiefFinancialOfficerMember, Bank's Chief Executive Officer Member, Chief Administrative Officer Member
Segment Reporting, CODM, Profit (Loss) Measure, How Used, Description	The CODM uses the Business Segment net income in deciding how to allocate resources and assess performance for individual Business Segments, including evaluating the cost or opportunity value of funds within each Business Segment and identifying areas of focus for organic growth or acquisition.