v3.26.1
Borrowings - Schedule of Total Subordinated Debt (Detail) - USD ($)
$ in Thousands
Mar. 31, 2026
Dec. 31, 2025
Subordinated Borrowing [Line Items]    
Subordinated debt $ 98,263 $ 98,145
Subordinated Debentures [Member]    
Subordinated Borrowing [Line Items]    
Subordinated debentures 24,401 24,308
Subordinated Notes [Member]    
Subordinated Borrowing [Line Items]    
Subordinated debentures 73,862 73,837
Subordinated debt $ 73,862 $ 73,837