v3.26.1
Borrowings - Schedule of Subordinated Notes (Detail) - 7.125% Fixed-to-Floating Rate Subordinated Notes Due 2035 [Member] - USD ($)
$ in Thousands
3 Months Ended 12 Months Ended
Mar. 31, 2026
Dec. 31, 2025
Jul. 17, 2025
Subordinated Borrowing [Line Items]      
Subordinated notes $ 75,000 $ 75,000 $ 75,000
Total principal outstanding 75,000 75,000  
Debt issuance cost (1,138) (1,163)  
Total subordinated notes $ 73,862 $ 73,837  
Weighted Average Rate 7.13% 7.13%  
Debt instrument term 9 years 3 months 18 days 9 years 7 months 6 days