Quarterly report [Sections 13 or 15(d)]

Servicing Assets - Additional Information (Detail)

v3.26.1
Servicing Assets - Additional Information (Detail) - USD ($)
$ in Thousands
3 Months Ended 12 Months Ended
Mar. 31, 2026
Mar. 31, 2025
Dec. 31, 2025
Risks Inherent In Servicing Assets And Servicing Liabilities [Line Items]      
Serviced loans sold to unaffiliated parties $ 561,800   $ 615,900
Servicing fee income $ 1,400 $ 1,300  
Contractually Specified Servicing Fee Income, Statement of Income or Comprehensive Income [Extensible Enumeration] Noninterest Income, Other Operating Income Noninterest Income, Other Operating Income  
Amortization expense $ 612 $ 668  
Fair value of servicing rights 8,800   8,500
Residential mortgage loans $ 57,900   $ 62,500
Minimum      
Risks Inherent In Servicing Assets And Servicing Liabilities [Line Items]      
Discount rates ranging 7.40%   9.70%
Prepayment speeds 13.20%   20.20%
Maximum      
Risks Inherent In Servicing Assets And Servicing Liabilities [Line Items]      
Discount rates ranging 20.90%   18.90%
Prepayment speeds 28.70%   28.00%