ALLOWANCE FOR LOAN LOSSES - Reconciliation of the allowance for loan losses (Details) - USD ($) $ in Thousands	3 Months Ended	6 Months Ended
Sep. 30, 2020	Sep. 30, 2019	Sep. 30, 2020	Sep. 30, 2019
Reconciliation of the allowance for loan losses
Beginning balance	$ 17,076	$ 11,442	$ 12,624	$ 11,457
Provision for (recapture of) loan losses	1,800		6,300
Charge-offs	(23)	(13)	(88)	(57)
Recoveries	13	7	30	36
Ending balance	18,866	11,436	18,866	11,436
Commercial Real Estate Portfolio Segment \| Commercial Business
Reconciliation of the allowance for loan losses
Beginning balance	2,011	2,113	2,008	1,808
Provision for (recapture of) loan losses	169	(62)	162	246
Charge-offs			0	(3)
Recoveries			10	0
Ending balance	2,180	2,051	2,180	2,051
Commercial Real Estate Portfolio Segment \| Commercial Real Estate
Reconciliation of the allowance for loan losses
Beginning balance	11,323	4,889	6,421	5,053
Provision for (recapture of) loan losses	1,886	149	6,788	(15)
Charge-offs			0	0
Recoveries			0	0
Ending balance	13,209	5,038	13,209	5,038
Commercial Real Estate Portfolio Segment \| Land
Reconciliation of the allowance for loan losses
Beginning balance	243	244	230	254
Provision for (recapture of) loan losses	2	(25)	15	(35)
Charge-offs			0	0
Recoveries			0	0
Ending balance	245	219	245	219
Commercial Real Estate Portfolio Segment \| Multi-Family
Reconciliation of the allowance for loan losses
Beginning balance	879	699	854	728
Provision for (recapture of) loan losses	(134)	80	(109)	51
Charge-offs			0	0
Recoveries			0	0
Ending balance	745	779	745	779
Commercial Real Estate Portfolio Segment \| Real Estate Construction
Reconciliation of the allowance for loan losses
Beginning balance	692	1,506	1,149	1,457
Provision for (recapture of) loan losses	28	(125)	(429)	(76)
Charge-offs			0	0
Recoveries			0	0
Ending balance	720	1,381	720	1,381
Consumer
Reconciliation of the allowance for loan losses
Beginning balance	1,281	1,346	1,363	1,447
Provision for (recapture of) loan losses	(116)	7	(140)	(82)
Charge-offs	(23)	(13)	(88)	(54)
Recoveries	13	7	20	36
Ending balance	1,155	1,347	1,155	1,347
Unallocated
Reconciliation of the allowance for loan losses
Beginning balance	647	645	599	710
Provision for (recapture of) loan losses	(35)	(24)	13	(89)
Charge-offs			0	0
Recoveries			0	0
Ending balance	$ 612	$ 621	$ 612	$ 621

Amount of recovery of loans and lease receivables which had previously been fully or partially written-off as bad debts.

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A roll forward is a reconciliation of a concept from the beginning of a period to the end of a period.

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Amount of loans and leases that have been written off from both loan receivables and allowance reserve for credit loss.

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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.

+ References

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Amount of expense related to estimated loss from loan and lease transactions.

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