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Borrowed Money Text Tag (Details) - USD ($) $ / shares in Units, $ in Thousands | 12 Months Ended |  |
--- | --- | --- | ---
Mar. 31, 2024 | Mar. 31, 2023 | Mar. 31, 2017 | Mar. 31, 2003 | Aug. 23, 2023 | Sep. 17, 2003
Debt Disclosure [Abstract] |  |  |  |  |  |
Federal Home Loan Bank, Advance | $ 28,000 |  |  |  |  |
Borrowing limit from FHLB % of assets | 30.00% |  |  |  |  |
Federal Home Loan Bank, Advances, General Debt Obligations, Maximum Amount Available | $ 227,000 |  |  |  |  |
Federal Home Loan Bank Stock | 2,004 | $ 2,266 |  |  |  |
Federal Home Loan Bank, Advances, Branch of FHLB Bank [Line Items] |  |  |  |  |  |
Federal Home Loan Bank, Advances, General Debt Obligations, Amount of Available, Unused Funds | 7,800 |  |  |  |  |
Interest Expense, Federal Home Loan Bank and Federal Reserve Bank Advances, Short-Term | 1,100 |  |  |  |  |
subordinated debt issued shares (in shares) |  |  |  |  |  | 13,000
Liquidation amount subordinated debt (in dollars per share) |  |  |  |  |  | $ 1,000
Proceeds from Issuance of Long-term Debt | $ 5,527 | 25,000 |  | $ 13,000 |  |
Proceeds from (Payments for) Other Financing Activities |  |  |  | 400 |  |
Payments for Repurchase of Trust Preferred Securities |  |  |  | $ 13,400 |  |
Debt Instrument, Basis Spread on Variable Rate | 3.05% |  |  |  |  |
Decrease in Subordinated Debt Interest Payable |  |  | $ 2,500 |  |  |
Accrued interest expense subordinated debt | $ 45 | 44 |  |  |  |
Interest Expense, Subordinated Notes and Debentures | 1,200 | 814 |  |  |  |
PPPLF, Interest Expense |  | 0 |  |  |  |
Other | 5,000 | 2,500 |  |  |  |
Interest Expense, Other | 74 | 25 |  |  |  |
Federal Home Loan Bank, Advances, Branch of FHLB Bank, Amount of Advances |  |  |  |  | $ 3,000 |
Interest Payable | 7 | $ 3 |  |  |  |
Debt Securities |  |  |  |  |  |
Federal Home Loan Bank, Advances, Branch of FHLB Bank [Line Items] |  |  |  |  |  |
Federal Home Loan Bank, Advances, General Debt Obligations, Disclosures, Collateral Pledged | 2,200 |  |  |  |  |
Financing Receivable |  |  |  |  |  |
Federal Home Loan Bank, Advances, Branch of FHLB Bank [Line Items] |  |  |  |  |  |
Federal Home Loan Bank, Advances, General Debt Obligations, Disclosures, Collateral Pledged | $ 48,000 |  |  |  |  |

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