Annual report pursuant to Section 13 and 15(d)

Servicing Assets - Additional Information (Detail)

v3.22.4
Servicing Assets - Additional Information (Detail) - USD ($)
$ in Millions
12 Months Ended
Dec. 31, 2022
Dec. 31, 2021
Dec. 31, 2020
Risks Inherent In Servicing Assets And Servicing Liabilities [Line Items]      
Serviced loans sold to unaffiliated parties $ 523.6 $ 473.5  
Servicing fee income $ 4.9 $ 4.6 $ 4.2
Contractually Specified Servicing Fee Income, Statement of Income or Comprehensive Income [Extensible Enumeration] Noninterest Income, Other Operating Income Noninterest Income, Other Operating Income Noninterest Income, Other Operating Income
Fair value of servicing rights $ 7.1 $ 8.1  
Minimum      
Risks Inherent In Servicing Assets And Servicing Liabilities [Line Items]      
Discount rates ranging 21.90% 10.40%  
Prepayment speeds 10.80% 10.20%  
Maximum      
Risks Inherent In Servicing Assets And Servicing Liabilities [Line Items]      
Discount rates ranging 25.30% 16.70%  
Prepayment speeds 16.70% 12.80%