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ALLOWANCE FOR LOAN LOSSES - Additional information (Details) - USD ($)
9 Months Ended
Dec. 31, 2020
Dec. 31, 2019
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Interest income foregone on non-accrual loans $ 42,000 $ 57,000
Percentage Of Delinquent Loan Amount 75.00%  
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
Commercial Real Estate Portfolio Segment | Real estate one-to-four family    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Post-modification outstanding recorded investment amount $ 129,000  
Consumer | Real estate one-to-four family    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Extended maturity period of loans receivable 10 years