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Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 326
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+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 326
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
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Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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-SubTopic 20
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-Section 50
-Paragraph 6
-Publisher FASB
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Reference 2: http://www.xbrl.org/2003/role/disclosureRef
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Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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-SubTopic 20
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LOANS AND ALLOWANCE FOR CREDIT LOSSES FOR LOANS - Reconciliation of the allowance for loan losses (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended		12 Months Ended
	Sep. 30, 2024	Sep. 30, 2023	Sep. 30, 2024	Sep. 30, 2023	Mar. 31, 2024
Reconciliation of the allowance for loan losses
Beginning balance	$ 15,364	$ 15,343	$ 15,364	$ 15,309	$ 15,309
(Recapture of) provision for credit losses	100		100
Charge-offs			(1)	(11)	(13)
Recoveries	2	3	3	6
Ending balance	15,466	15,346	15,466	15,346	15,364
Adjustment \| ASU 2016-13
Reconciliation of the allowance for loan losses
Beginning balance				42	42
Commercial Real Estate Portfolio Segment \| Commercial Business
Reconciliation of the allowance for loan losses
Beginning balance	5,141	5,215	5,280	3,123	3,123
(Recapture of) provision for credit losses	(23)	124	(162)	332
Ending balance	5,118	5,339	5,118	5,339	5,280
Commercial Real Estate Portfolio Segment \| Commercial Business \| Adjustment \| ASU 2016-13
Reconciliation of the allowance for loan losses
Beginning balance				1,884	1,884
Commercial Real Estate Portfolio Segment \| Commercial Real Estate
Reconciliation of the allowance for loan losses
Beginning balance	7,303	7,205	7,391	8,894	8,894
(Recapture of) provision for credit losses	(166)	(67)	(254)	(262)
Ending balance	7,137	7,138	7,137	7,138	7,391
Commercial Real Estate Portfolio Segment \| Commercial Real Estate \| Adjustment \| ASU 2016-13
Reconciliation of the allowance for loan losses
Beginning balance				(1,494)	(1,494)
Commercial Real Estate Portfolio Segment \| Land
Reconciliation of the allowance for loan losses
Beginning balance	120	123	106	93	93
(Recapture of) provision for credit losses	19	(11)	33	(21)
Ending balance	139	112	139	112	106
Commercial Real Estate Portfolio Segment \| Land \| Adjustment \| ASU 2016-13
Reconciliation of the allowance for loan losses
Beginning balance				40	40
Commercial Real Estate Portfolio Segment \| Multi-Family
Reconciliation of the allowance for loan losses
Beginning balance	402	293	367	798	798
(Recapture of) provision for credit losses	(48)		(13)	(13)
Ending balance	354	293	354	293	367
Commercial Real Estate Portfolio Segment \| Multi-Family \| Adjustment \| ASU 2016-13
Reconciliation of the allowance for loan losses
Beginning balance				(492)	(492)
Commercial Real Estate Portfolio Segment \| Real Estate Construction
Reconciliation of the allowance for loan losses
Beginning balance	723	830	636	764	764
(Recapture of) provision for credit losses	202	30	289	(35)
Ending balance	925	860	925	860	636
Commercial Real Estate Portfolio Segment \| Real Estate Construction \| Adjustment \| ASU 2016-13
Reconciliation of the allowance for loan losses
Beginning balance				131	131
Consumer
Reconciliation of the allowance for loan losses
Beginning balance	1,675	1,677	1,584	1,127	1,127
(Recapture of) provision for credit losses	116	(76)	207	(1)
Charge-offs			(1)	(11)
Recoveries	2	3	3	6
Ending balance	$ 1,793	$ 1,604	$ 1,793	1,604	1,584
Consumer \| Adjustment \| ASU 2016-13
Reconciliation of the allowance for loan losses
Beginning balance				483	483
Unallocated
Reconciliation of the allowance for loan losses
Beginning balance				510	510
Unallocated \| Adjustment \| ASU 2016-13
Reconciliation of the allowance for loan losses
Beginning balance				$ (510)	$ (510)