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INCOME TAXES - Additional Information (Details) - USD ($) | 1 Months Ended | 12 Months Ended
--- | --- | ---
Dec. 22, 2017 | Mar. 31, 2020 | Mar. 31, 2019 | Mar. 31, 2018 | Mar. 31, 2017
INCOME TAXES |  |  |  |  |
Federal corporate income tax rate |  | 21.00% | 21.00% | 30.80% | 34.00%
Tax cuts and jobs act net tax expense benefit |  |  |  | $ 422,000 |
One-time charge to provision for income taxes |  |  |  | $ 2,100,000 |
Base year allowance for loan losses |  | $ 2,200,000 | $ 2,200,000 |  |
Unrecognized deferred tax liability |  | $ 517,000 | $ 517,000 |  |
Tax Year 2017 |  |  |  |  |
INCOME TAXES |  |  |  |  |
Federal corporate income tax rate | 35.00% |  |  |  |
Tax Year 2018 |  |  |  |  |
INCOME TAXES |  |  |  |  |
Federal corporate income tax rate | 21.00% |  |  |  |

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