Loans and ACL - Summary of Amortized Cost of Collateral-Dependent Loans, Individually Evaluated for Credit Losses (Detail) - USD ($) $ in Thousands |
3 Months Ended | 12 Months Ended |
|---|---|---|
Mar. 31, 2026 |
Dec. 31, 2025 |
|
| Loans and Leases Receivable Disclosure [Line Items] | ||
| Amortized cost of collateral dependent loans | $ 42,894 | $ 77,226 |
| Commercial and Industrial [Member] | ||
| Loans and Leases Receivable Disclosure [Line Items] | ||
| Amortized cost of collateral dependent loans | 16,890 | 21,134 |
| Real Estate [Member] | Commercial [Member] | ||
| Loans and Leases Receivable Disclosure [Line Items] | ||
| Amortized cost of collateral dependent loans | 21,588 | 50,525 |
| Real Estate [Member] | Residential [Member] | ||
| Loans and Leases Receivable Disclosure [Line Items] | ||
| Amortized cost of collateral dependent loans | $ 4,416 | $ 5,567 |