Allowance for Credit Losses - Additional Information (Detail) - USD ($) |
3 Months Ended | |
|---|---|---|
Jun. 30, 2026 |
Jun. 30, 2025 |
|
| Allowance For Loan And Lease Losses [Abstract] | ||
| Threshold for loan analysis | $ 1,000,000 | |
| Interest lost on nonaccrual loans | 1,300,000 | $ 2,100,000 |
| Interest income on nonaccrual loans | $ 144,000.0 | $ 339,000.0 |