LOANS AND ACL - Reconciliation of the allowance for loan losses (Details) - USD ($) $ in Thousands	3 Months Ended	12 Months Ended
Jun. 30, 2025	Jun. 30, 2024	Mar. 31, 2025
Reconciliation of the allowance for loan losses
Beginning balance	$ 15,374	$ 15,364	$ 15,364
Charge-offs		(1)	(123)
Recoveries	52	1
Ending balance	15,426	15,364	15,374
Commercial and Construction \| Commercial Business
Reconciliation of the allowance for loan losses
Beginning balance	5,033	5,280	5,280
(Recapture of) provision for loan losses	(174)	(139)
Ending balance	4,859	5,141	5,033
Commercial Real Estate Portfolio Segment \| Commercial Real Estate
Reconciliation of the allowance for loan losses
Beginning balance	7,492	7,391	7,391
(Recapture of) provision for loan losses	158	(88)
Charge-offs			(80)
Ending balance	7,650	7,303	7,492
Commercial Real Estate Portfolio Segment \| Land
Reconciliation of the allowance for loan losses
Beginning balance	83	106	106
(Recapture of) provision for loan losses	(11)	14
Ending balance	72	120	83
Commercial Real Estate Portfolio Segment \| Multi-Family
Reconciliation of the allowance for loan losses
Beginning balance	444	367	367
(Recapture of) provision for loan losses	(4)	35
Ending balance	440	402	444
Commercial Real Estate Portfolio Segment \| Real Estate Construction
Reconciliation of the allowance for loan losses
Beginning balance	480	636	636
(Recapture of) provision for loan losses	(147)	87
Ending balance	333	723	480
Consumer
Reconciliation of the allowance for loan losses
Beginning balance	1,842	1,584	1,584
(Recapture of) provision for loan losses	178	91
Charge-offs		(1)
Recoveries	52	1
Ending balance	$ 2,072	$ 1,675	$ 1,842

Amount excluding accrued interest, of allowance for credit loss on financing receivable. Excludes net investment in lease.

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 326
-SubTopic 20
-Name Accounting Standards Codification
-Section 45
-Paragraph 1
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147479344/326-20-45-1

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- Definition

Amount, excluding accrued interest, of increase in allowance for credit loss on financing receivable from recovery. Excludes net investment in lease.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 326
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 13
-Subparagraph (e)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147479319/326-20-50-13

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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.

+ References

No definition available.

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Amount, excluding accrued interest, of decrease in allowance for credit loss on financing receivable from writeoff. Excludes net investment in lease.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 326
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 6
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147479319/326-20-50-6

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Topic 326
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 13
-Subparagraph (d)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147479319/326-20-50-13

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- Definition

Amount, excluding accrued interest, of credit loss expense (reversal of expense) on financing receivable. Excludes net investment in lease.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 326
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 13
-Subparagraph (b)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147479319/326-20-50-13

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