ALLOWANCE FOR LOAN LOSSES - Additional information (Details)	9 Months Ended		12 Months Ended
	Dec. 31, 2022 USD ($) item	Dec. 31, 2021 USD ($) item	Mar. 31, 2022 USD ($)
Accounts, Notes, Loans and Financing Receivable [Line Items]
Interest income foregone on non-accrual loans	$ 10,000	$ 21,000	$ 24,000
Current	$ 1,000,290,000		960,256,000
Percentage of delinquent loan amount	75.00%
Number of TDR loans default	0	0
Loans Insured or Guaranteed by US Government Authorities
Accounts, Notes, Loans and Financing Receivable [Line Items]
Current	$ 13,200,000
Commercial Real Estate Portfolio Segment | Commercial Real Estate
Accounts, Notes, Loans and Financing Receivable [Line Items]
Current	562,074,000		582,715,000
Consumer
Accounts, Notes, Loans and Financing Receivable [Line Items]
Current	$ 100,018,000		$ 83,493,000