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COMMITMENTS AND CONTINGENCIES - Significant Off-balance Sheet Commitments (Details) - USD ($) $ in Thousands | Mar. 31, 2020 | Mar. 31, 2019
--- | --- | ---
Fair Value, Off-balance Sheet Risks, Disclosure Information [Line Items] |  |
Total | $ 160,682 | $ 182,989
Commitments to originate loans: | Adjustable-rate |  |
Fair Value, Off-balance Sheet Risks, Disclosure Information [Line Items] |  |
Total | 18,712 | 30,579
Commitments to originate loans: | Fixed-rate |  |
Fair Value, Off-balance Sheet Risks, Disclosure Information [Line Items] |  |
Total | 17,085 | 10,158
Standby letters of credit |  |
Fair Value, Off-balance Sheet Risks, Disclosure Information [Line Items] |  |
Total | 2,045 | 2,410
Undisbursed loan funds and unused lines of credit |  |
Fair Value, Off-balance Sheet Risks, Disclosure Information [Line Items] |  |
Total | $ 122,840 | $ 139,842

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