ALLOWANCE FOR LOAN LOSSES - TDRs by Interest Accrual Status (Details) - USD ($) $ in Thousands	Jun. 30, 2021	Mar. 31, 2021
Accounts, Notes, Loans and Financing Receivable [Line Items]
Accrual	$ 1,837	$ 3,317
Nonaccrual	252	264
Total	2,089	3,581
Commercial Real Estate Portfolio Segment | Commercial Business
Accounts, Notes, Loans and Financing Receivable [Line Items]
Accrual	0	0
Nonaccrual	114	120
Total	114	120
Commercial Real Estate Portfolio Segment | Commercial Real Estate
Accounts, Notes, Loans and Financing Receivable [Line Items]
Accrual	1,315	1,324
Nonaccrual	138	144
Total	1,453	1,468
Commercial Real Estate Portfolio Segment | Land
Accounts, Notes, Loans and Financing Receivable [Line Items]
Accrual	0	710
Nonaccrual	0	0
Total	0	710
Commercial Real Estate Portfolio Segment | Multi-Family
Accounts, Notes, Loans and Financing Receivable [Line Items]
Accrual	0	753
Nonaccrual	0	0
Total	0	753
Consumer
Accounts, Notes, Loans and Financing Receivable [Line Items]
Accrual	522	530
Nonaccrual	0	0
Total	$ 522	$ 530