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LOANS RECEIVABLE - Loans receivable, excluding loans held for sale (Details) - USD ($) $ in Thousands		Jun. 30, 2021	Mar. 31, 2021	Jun. 30, 2020	Mar. 31, 2020
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans		$ 889,479	$ 943,235
Less: Allowance for loan losses		17,590	19,178	$ 17,076	$ 12,624
Loans receivable, net		871,889	924,057
Commercial Real Estate Portfolio Segment
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans		836,187	884,656
Commercial Real Estate Portfolio Segment | Commercial Business
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans	[1]	216,128	265,145
Less: Allowance for loan losses		2,202	2,416	2,011	2,008
Commercial Real Estate Portfolio Segment | Commercial Real Estate
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans		548,947	543,467
Less: Allowance for loan losses		12,942	14,089	11,323	6,421
Commercial Real Estate Portfolio Segment | Land
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans		14,922	14,040
Less: Allowance for loan losses		237	233	243	230
Commercial Real Estate Portfolio Segment | Multi-Family
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans		44,804	45,014
Less: Allowance for loan losses		607	638	879	854
Commercial Real Estate Portfolio Segment | Real Estate Construction
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans		11,386	16,990
Less: Allowance for loan losses		197	294	692	1,149
Consumer
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans		53,292	58,579
Less: Allowance for loan losses		712	852	$ 1,281	$ 1,363
Consumer | Real estate one-to-four family
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans		51,480	56,405
Consumer | Other installment
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans		$ 1,812	$ 2,174
[1] SBA PPP loans totaled $55.5 million and $93.4 million at June 30, 2021 and March 31, 2021, respectively.

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Amount of allowance to cover probable credit losses on loans and leases. Includes carryover of or adjustments to the allowance for loan losses in connection with business combinations. Excludes allowance for loans and leases covered under loss sharing agreements.

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Amount before allowance of loans and leases held in portfolio, including but not limited to, commercial and consumer loans. Includes deferred interest and fees, undisbursed portion of loan balance, unamortized costs and premiums and discounts from face amounts. Excludes loans and leases covered under loss sharing agreements.

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Amount after allowance and deduction of deferred interest and fees, unamortized costs and premiums and discounts from face amounts, of loans and leases held in portfolio, including but not limited to, commercial and consumer loans. Excludes loans and leases covered under loss sharing agreements and loans held for sale.

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