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LOANS AND ALLOWANCE FOR CREDIT LOSSES FOR LOANS - Impaired Financing Receivables (Details) - USD ($) $ in Thousands | Dec. 31, 2023 | Mar. 31, 2023 | Dec. 31, 2022 | Sep. 30, 2022 | Mar. 31, 2022
--- | --- | --- | --- | --- | ---
Allowance for Loan Losses |  |  |  |  |
Individually evaluated for impairment |  | $ 6 |  |  |
Collectively Evaluated for Impairment |  | 15,303 |  |  |
Loans and Leases Receivable, Allowance, Total |  | 15,309 | $ 14,558 | $ 14,552 | $ 14,523
Recorded Investment in Loans |  |  |  |  |
Total Loans Receivable | $ 1,018,199 |  |  |  |
Individually Evaluated for Impairment |  | 629 |  |  |
Collectively Evaluated for Impairment |  | 1,008,227 |  |  |
Total |  | 1,008,856 |  |  |
Commercial Real Estate Portfolio Segment |  |  |  |  |
Recorded Investment in Loans |  |  |  |  |
Total Loans Receivable | 920,198 |  |  |  |
Commercial Real Estate Portfolio Segment | Commercial Business |  |  |  |  |
Allowance for Loan Losses |  |  |  |  |
Individually evaluated for impairment |  | 0 |  |  |
Collectively Evaluated for Impairment |  | 3,123 |  |  |
Loans and Leases Receivable, Allowance, Total |  | 3,123 | 2,890 | 2,789 | 2,422
Recorded Investment in Loans |  |  |  |  |
Total Loans Receivable | 229,249 |  |  |  |
Individually Evaluated for Impairment |  | 79 |  |  |
Collectively Evaluated for Impairment |  | 232,789 |  |  |
Total |  | 232,868 |  |  |
Commercial Real Estate Portfolio Segment | Commercial Real Estate |  |  |  |  |
Allowance for Loan Losses |  |  |  |  |
Individually evaluated for impairment |  | 0 |  |  |
Collectively Evaluated for Impairment |  | 8,894 |  |  |
Loans and Leases Receivable, Allowance, Total |  | 8,894 | 7,976 | 8,230 | 9,037
Recorded Investment in Loans |  |  |  |  |
Total Loans Receivable | 573,075 |  |  |  |
Individually Evaluated for Impairment |  | 100 |  |  |
Collectively Evaluated for Impairment |  | 564,396 |  |  |
Total |  | 564,496 |  |  |
Commercial Real Estate Portfolio Segment | Land |  |  |  |  |
Allowance for Loan Losses |  |  |  |  |
Individually evaluated for impairment |  | 0 |  |  |
Collectively Evaluated for Impairment |  | 93 |  |  |
Loans and Leases Receivable, Allowance, Total |  | 93 | 98 | 124 | 168
Recorded Investment in Loans |  |  |  |  |
Total Loans Receivable | 8,690 |  |  |  |
Individually Evaluated for Impairment |  | 0 |  |  |
Collectively Evaluated for Impairment |  | 6,437 |  |  |
Total |  | 6,437 |  |  |
Commercial Real Estate Portfolio Segment | Multi-Family |  |  |  |  |
Allowance for Loan Losses |  |  |  |  |
Individually evaluated for impairment |  | 0 |  |  |
Collectively Evaluated for Impairment |  | 798 |  |  |
Loans and Leases Receivable, Allowance, Total |  | 798 | 815 | 856 | 845
Recorded Investment in Loans |  |  |  |  |
Total Loans Receivable | 67,017 |  |  |  |
Individually Evaluated for Impairment |  | 0 |  |  |
Collectively Evaluated for Impairment |  | 55,836 |  |  |
Total |  | 55,836 |  |  |
Commercial Real Estate Portfolio Segment | Real Estate Construction |  |  |  |  |
Allowance for Loan Losses |  |  |  |  |
Individually evaluated for impairment |  | 0 |  |  |
Collectively Evaluated for Impairment |  | 764 |  |  |
Loans and Leases Receivable, Allowance, Total |  | 764 | 844 | 638 | 393
Recorded Investment in Loans |  |  |  |  |
Total Loans Receivable | 42,167 |  |  |  |
Individually Evaluated for Impairment |  | 0 |  |  |
Collectively Evaluated for Impairment |  | 47,762 |  |  |
Total |  | 47,762 |  |  |
Consumer |  |  |  |  |
Allowance for Loan Losses |  |  |  |  |
Individually evaluated for impairment |  | 6 |  |  |
Collectively Evaluated for Impairment |  | 1,121 |  |  |
Loans and Leases Receivable, Allowance, Total |  | 1,127 | 1,189 | 1,225 | 943
Recorded Investment in Loans |  |  |  |  |
Total Loans Receivable | $ 98,001 |  |  |  |
Individually Evaluated for Impairment |  | 450 |  |  |
Collectively Evaluated for Impairment |  | 101,007 |  |  |
Total |  | 101,457 |  |  |
Unallocated |  |  |  |  |
Allowance for Loan Losses |  |  |  |  |
Individually evaluated for impairment |  | 0 |  |  |
Collectively Evaluated for Impairment |  | 510 |  |  |
Loans and Leases Receivable, Allowance, Total |  | 510 | $ 746 | $ 690 | $ 715
Recorded Investment in Loans |  |  |  |  |
Individually Evaluated for Impairment |  | 0 |  |  |
Collectively Evaluated for Impairment |  | 0 |  |  |
Total |  | $ 0 |  |  |

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