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v3.22.1

Allowance for Credit Losses (Summary of the Post-Modification Balance of Loans Restructured) (Detail) $ in Thousands | 3 Months Ended | 12 Months Ended
--- | --- | ---
Mar. 31, 2022 USD ($) contract | Mar. 31, 2021 USD ($) contract | Mar. 31, 2022 USD ($) contract | Mar. 31, 2021 USD ($) contract
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |  |  |
TDRs, count | contract | 13 | 20 | 57 | 106
TDRs, balance | $ | $ 3,097 | $ 2,126 | $ 14,839 | $ 24,201
Extension at Below Market Terms |  |  |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |  |  |
TDRs, count | contract | 11 | 20 |  |
TDRs, balance | $ | $ 2,206 | $ 2,126 |  |
Reduction of Interest Rate |  |  |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |  |  |
TDRs, count | contract | 9 | 10 |  |
TDRs, balance | $ | $ 2,025 | $ 1,403 |  |
Modification to Interest-only Payments |  |  |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |  |  |
TDRs, count | contract | 4 | 1 |  |
TDRs, balance | $ | $ 2,154 | $ 113 |  |
Forgiveness of Debt |  |  |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |  |  |
TDRs, count | contract | 0 | 0 |  |
TDRs, balance | $ | $ 0 | $ 0 |  |
Commercial, industrial and other | Commercial, industrial and other |  |  |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |  |  |
TDRs, count | contract | 3 | 2 | 17 | 18
TDRs, balance | $ | $ 282 | $ 151 | $ 5,205 | $ 6,910
Commercial, industrial and other | Commercial, industrial and other | Extension at Below Market Terms |  |  |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |  |  |
TDRs, count | contract | 2 | 2 |  |
TDRs, balance | $ | $ 120 | $ 151 |  |
Commercial, industrial and other | Commercial, industrial and other | Reduction of Interest Rate |  |  |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |  |  |
TDRs, count | contract | 1 | 0 |  |
TDRs, balance | $ | $ 85 | $ 0 |  |
Commercial, industrial and other | Commercial, industrial and other | Modification to Interest-only Payments |  |  |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |  |  |
TDRs, count | contract | 2 | 0 |  |
TDRs, balance | $ | $ 247 | $ 0 |  |
Commercial, industrial and other | Commercial, industrial and other | Forgiveness of Debt |  |  |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |  |  |
TDRs, count | contract | 0 | 0 |  |
TDRs, balance | $ | $ 0 | $ 0 |  |
Commercial real estate | Non-construction |  |  |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |  |  |
TDRs, count | contract | 2 | 2 | 5 | 7
TDRs, balance | $ | $ 1,907 | $ 237 | $ 4,613 | $ 3,466
Commercial real estate | Non-construction | Extension at Below Market Terms |  |  |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |  |  |
TDRs, count | contract | 1 | 2 |  |
TDRs, balance | $ | $ 1,178 | $ 237 |  |
Commercial real estate | Non-construction | Reduction of Interest Rate |  |  |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |  |  |
TDRs, count | contract | 1 | 1 |  |
TDRs, balance | $ | $ 1,178 | $ 113 |  |
Commercial real estate | Non-construction | Modification to Interest-only Payments |  |  |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |  |  |
TDRs, count | contract | 2 | 1 |  |
TDRs, balance | $ | $ 1,907 | $ 113 |  |
Commercial real estate | Non-construction | Forgiveness of Debt |  |  |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |  |  |
TDRs, count | contract | 0 | 0 |  |
TDRs, balance | $ | $ 0 | $ 0 |  |
Residential real estate and other |  |  |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |  |  |
TDRs, count | contract | 8 | 16 | 35 | 81
TDRs, balance | $ | $ 908 | $ 1,738 | $ 5,021 | $ 13,825
Residential real estate and other | Extension at Below Market Terms |  |  |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |  |  |
TDRs, count | contract | 8 | 16 |  |
TDRs, balance | $ | $ 908 | $ 1,738 |  |
Residential real estate and other | Reduction of Interest Rate |  |  |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |  |  |
TDRs, count | contract | 7 | 9 |  |
TDRs, balance | $ | $ 762 | $ 1,290 |  |
Residential real estate and other | Modification to Interest-only Payments |  |  |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |  |  |
TDRs, count | contract | 0 | 0 |  |
TDRs, balance | $ | $ 0 | $ 0 |  |
Residential real estate and other | Forgiveness of Debt |  |  |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |  |  |
TDRs, count | contract | 0 | 0 |  |
TDRs, balance | $ | $ 0 | $ 0 |  |

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