Loans and the Allowance for Credit Losses - Recorded Investment in Non-Accrual Loans (Parenthetical) (Detail) |
Jun. 30, 2026
USD ($)
Borrower
|
Dec. 31, 2025
USD ($)
Borrower
|
|---|---|---|
| Receivables [Abstract] | ||
| Number of borrowers with loan balance greater than one million | Borrower | 16 | 11 |
| Borrowers with large amount of loans outstanding, minimum amount of loans per borrower | $ 1,000,000 | $ 1,000,000 |
| Borrowers with large amount of loans outstanding, net | $ 85,900,000 | $ 35,500,000 |