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Loans (Details 4) - USD ($) $ in Thousands | Dec. 31, 2022 | Mar. 31, 2022
--- | --- | ---
Financing Receivable, Past Due [Line Items] |  |
Impaired Financing Receivable, Recorded Investment | $ 4,983 | $ 1,779
Impaired Financing Receivable, Unpaid Principal Balance | 5,508 | 47
Impaired Financing Receivable, Related Allowance |  |
Commercial, Financial And Agricultural Loan [Member] |  |
Financing Receivable, Past Due [Line Items] |  |
Impaired Financing Receivable, with No Related Allowance, Recorded Investment | 29 |
Impaired Financing Receivable, with No Related Allowance, Unpaid Principal Balance | 29 |
Impaired Financing Receivable, with Related Allowance, Recorded Investment |  |
Impaired Financing Receivable, with Related Allowance, Unpaid Principal Balance |  |
Impaired Financing Receivable, Recorded Investment | 29 |
Impaired Financing Receivable, Unpaid Principal Balance | 29 |
Impaired Financing Receivable, Related Allowance |  |
Construction Loans [Member] |  |
Financing Receivable, Past Due [Line Items] |  |
Impaired Financing Receivable, with No Related Allowance, Recorded Investment |  |
Impaired Financing Receivable, with No Related Allowance, Unpaid Principal Balance |  |
Impaired Financing Receivable, with Related Allowance, Recorded Investment |  |
Impaired Financing Receivable, with Related Allowance, Unpaid Principal Balance |  |
Impaired Financing Receivable, Recorded Investment |  |
Impaired Financing Receivable, Unpaid Principal Balance |  |
Impaired Financing Receivable, Related Allowance |  |
Residential Mortgage [Member] |  |
Financing Receivable, Past Due [Line Items] |  |
Impaired Financing Receivable, with No Related Allowance, Recorded Investment | 34 | 42
Impaired Financing Receivable, with No Related Allowance, Unpaid Principal Balance | 51 | 1
Impaired Financing Receivable, with Related Allowance, Recorded Investment |  |
Impaired Financing Receivable, with Related Allowance, Unpaid Principal Balance |  |
Impaired Financing Receivable, Recorded Investment | 34 | 42
Impaired Financing Receivable, Unpaid Principal Balance | 51 | 1
Impaired Financing Receivable, Related Allowance |  |
Commercial Real Estate [Member] |  |
Financing Receivable, Past Due [Line Items] |  |
Impaired Financing Receivable, with No Related Allowance, Recorded Investment | 4,752 | 1,737
Impaired Financing Receivable, with No Related Allowance, Unpaid Principal Balance | 5,260 | 46
Impaired Financing Receivable, with Related Allowance, Recorded Investment |  |
Impaired Financing Receivable, with Related Allowance, Unpaid Principal Balance |  |
Impaired Financing Receivable, Recorded Investment | 4,752 | 1,737
Impaired Financing Receivable, Unpaid Principal Balance | 5,260 | 46
Impaired Financing Receivable, Related Allowance |  |
Home Equity Line of Credit [Member] |  |
Financing Receivable, Past Due [Line Items] |  |
Impaired Financing Receivable, with No Related Allowance, Recorded Investment | 168 |
Impaired Financing Receivable, with No Related Allowance, Unpaid Principal Balance | 168 |
Impaired Financing Receivable, with Related Allowance, Recorded Investment |  |
Impaired Financing Receivable, with Related Allowance, Unpaid Principal Balance |  |
Impaired Financing Receivable, Recorded Investment | 168 |
Impaired Financing Receivable, Unpaid Principal Balance | 168 |
Impaired Financing Receivable, Related Allowance |  |
Consumer Portfolio Segment [Member] |  |
Financing Receivable, Past Due [Line Items] |  |
Impaired Financing Receivable, with No Related Allowance, Recorded Investment |  |
Impaired Financing Receivable, with No Related Allowance, Unpaid Principal Balance |  |
Impaired Financing Receivable, with Related Allowance, Recorded Investment |  |
Impaired Financing Receivable, with Related Allowance, Unpaid Principal Balance |  |
Impaired Financing Receivable, Recorded Investment |  |
Impaired Financing Receivable, Unpaid Principal Balance |  |
Impaired Financing Receivable, Related Allowance |  |

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