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ALLOWANCE FOR LOAN LOSSES - Additional information (Details) | 12 Months Ended
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Mar. 31, 2020 USD ($) item | Mar. 31, 2019 USD ($) | Mar. 31, 2018 USD ($)
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |
Interest income foregone on non-accrual loans | $ 75,000 | $ 94,000 | $ 102,000
Commercial Real Estate |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |
Troubled debt restructurings (TDR) loan for nonaccrual | 851,000 |  |
Commercial Real Estate Portfolio Segment | Commercial and Constructions |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |
Post-modification outstanding recorded investment amount | $ 27,000 | $ 25,000 |
Consumer |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |
Number of TDR loans default | item | 1 |  |
Consumer | Real estate one-to-four family |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |
Extended maturity period of loans receivable | 10 years |  |

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- Definition Represents an extended maturity period of loans receivable. + References No definition available. + Details
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- Definition Interest income foregone on loans not accruing. In general, when a loan is 90 days delinquent or when collection of principal or interest appears doubtful, it is placed on non-accrual status, at which time the accrual of interest ceases and a reserve for unrecoverable accrued interest is established and charged against operations. Payments received on non-accrual loans are applied to reduce the outstanding principal balance on a cash-basis method. As a general practice, a loan is not removed from non-accrual status until all delinquent principal, interest and late fees have been brought current and the borrower has demonstrated a history of performance based upon the contractual terms of the note. + References No definition available. + Details
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- Definition Amount of loan balance under troubled debt restructurings (TDR) for commercial real estate as nonaccrual. + References No definition available. + Details
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- Definition Amount, after troubled debt restructuring, of modified financing receivable. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 33 -URI http://asc.fasb.org/extlink&oid=118936363&loc=SL6953676-111524 + Details
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- Definition Number of financing receivable contracts modified as troubled debt restructuring within previous 12 months, with subsequent payment default. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 34 -URI http://asc.fasb.org/extlink&oid=118936363&loc=SL6953682-111524 + Details
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