LOANS AND ALLOWANCE FOR CREDIT LOSSES - Risk category of bank loans by year of origination (Details) - USD ($) $ in Thousands	3 Months Ended	12 Months Ended
Jun. 30, 2024	Jun. 30, 2023	Mar. 31, 2024
Origination year
2025/2024	$ 15,276		$ 68,625
2024/2023	76,786		169,408
2023/2022	173,329		338,864
2022/2021	335,937		126,861
2021/2020	124,239		84,175
Prior	289,320		215,697
Revolving Loans	30,178		20,383
Total Loans Receivable	1,045,065		1,024,013
Gross write-offs
2024/2023			11
Prior			2
Revolving Loans	1
Total Loans Receivable	1	$ 11	13
Commercial and Industrial \| Commercial Business
Origination year
2025/2024	1,951		14,126
2024/2023	17,940		63,838
2023/2022	62,724		85,864
2022/2021	84,322		28,119
2021/2020	26,553		17,431
Prior	28,789		12,701
Revolving Loans	16,214		7,325
Total Loans Receivable	238,493		229,404
Commercial Real Estate Portfolio Segment
Origination year
Total Loans Receivable	942,166		925,907
Commercial Real Estate Portfolio Segment \| Commercial Business
Origination year
Total Loans Receivable	238,493		229,404
Commercial Real Estate Portfolio Segment \| Commercial Real Estate
Origination year
2025/2024	5,871		36,636
2024/2023	35,980		70,599
2023/2022	70,010		147,912
2022/2021	146,863		89,662
2021/2020	88,855		53,424
Prior	230,536		185,268
Total Loans Receivable	578,115		583,501
Commercial Real Estate Portfolio Segment \| Land
Origination year
2025/2024			2,361
2024/2023	3,037		2,695
2023/2022	2,671		94
2022/2021	92
2021/2020			106
Prior	522		437
Total Loans Receivable	6,322		5,693
Commercial Real Estate Portfolio Segment \| Multi-Family
Origination year
2025/2024	20		970
2024/2023	965		21,643
2023/2022	26,319		32,003
2022/2021	36,246		4,841
2021/2020	4,632		8,823
Prior	11,096		2,491
Total Loans Receivable	79,278		70,771
Commercial Real Estate Portfolio Segment \| Real Estate Construction
Origination year
2025/2024	2,261		14,114
2024/2023	18,423		10,078
2023/2022	11,118		12,346
2022/2021	8,156
Total Loans Receivable	39,958		36,538
Consumer
Origination year
Total Loans Receivable	102,899		98,106
Gross write-offs
Total Loans Receivable	1	$ 11
Consumer \| Real estate one-to-four family
Origination year
2023/2022			60,447
2022/2021	60,083		4,164
2021/2020	4,134		4,364
Prior	18,354		14,792
Revolving Loans	13,512		12,599
Total Loans Receivable	96,083		96,366
Consumer \| Other installment
Origination year
2025/2024	5,173		418
2024/2023	441		555
2023/2022	487		198
2022/2021	175		75
2021/2020	65		27
Prior	23		8
Revolving Loans	452		459
Total Loans Receivable	6,816		1,740
Gross write-offs
2024/2023			11
Prior			2
Revolving Loans	1
Total Loans Receivable	1		13
Pass
Origination year
2025/2024	15,273		67,311
2024/2023	76,786		165,301
2023/2022	169,066		337,234
2022/2021	334,352		126,861
2021/2020	123,539		83,654
Prior	261,747		188,352
Revolving Loans	26,376		17,885
Total Loans Receivable	1,007,139		986,598
Pass \| Commercial and Industrial \| Commercial Business
Origination year
2025/2024	1,951		14,126
2024/2023	17,940		63,838
2023/2022	62,724		85,131
2022/2021	83,628		28,119
2021/2020	25,872		16,945
Prior	27,680		12,411
Revolving Loans	12,412		4,827
Total Loans Receivable	232,207		225,397
Pass \| Commercial Real Estate Portfolio Segment \| Commercial Real Estate
Origination year
2025/2024	5,871		36,116
2024/2023	35,980		66,847
2023/2022	66,285		147,015
2022/2021	145,972		89,662
2021/2020	88,855		53,424
Prior	204,326		158,311
Total Loans Receivable	547,289		551,375
Pass \| Commercial Real Estate Portfolio Segment \| Land
Origination year
2025/2024			2,361
2024/2023	3,037		2,340
2023/2022	2,319		94
2022/2021	92
2021/2020			106
Prior	522		437
Total Loans Receivable	5,970		5,338
Pass \| Commercial Real Estate Portfolio Segment \| Multi-Family
Origination year
2025/2024	20		970
2024/2023	965		21,643
2023/2022	26,133		32,003
2022/2021	36,246		4,841
2021/2020	4,613		8,788
Prior	10,876		2,429
Total Loans Receivable	78,853		70,674
Pass \| Commercial Real Estate Portfolio Segment \| Real Estate Construction
Origination year
2025/2024	2,258		13,320
2024/2023	18,423		10,078
2023/2022	11,118		12,346
2022/2021	8,156
Total Loans Receivable	39,955		35,744
Pass \| Consumer \| Real estate one-to-four family
Origination year
2023/2022			60,447
2022/2021	60,083		4,164
2021/2020	4,134		4,364
Prior	18,320		14,756
Revolving Loans	13,512		12,599
Total Loans Receivable	96,049		96,330
Pass \| Consumer \| Other installment
Origination year
2025/2024	5,173		418
2024/2023	441		555
2023/2022	487		198
2022/2021	175		75
2021/2020	65		27
Prior	23		8
Revolving Loans	452		459
Total Loans Receivable	6,816		1,740
Special Mention
Origination year
2025/2024	3		794
2024/2023			4,107
2023/2022	4,263		1,630
2022/2021	1,585
2021/2020	700		521
Prior	27,345		27,142
Revolving Loans	3,802		2,498
Total Loans Receivable	37,698		36,692
Special Mention \| Commercial and Industrial \| Commercial Business
Origination year
2023/2022			733
2022/2021	694
2021/2020	681		486
Prior	1,056		232
Revolving Loans	3,802		2,498
Total Loans Receivable	6,233		3,949
Special Mention \| Commercial Real Estate Portfolio Segment
Origination year
2024/2023			3,752
2023/2022			897
Prior			26,878
Total Loans Receivable			31,527
Special Mention \| Commercial Real Estate Portfolio Segment \| Commercial Real Estate
Origination year
2023/2022	3,725
2022/2021	891
Prior	26,137
Total Loans Receivable	30,753
Special Mention \| Commercial Real Estate Portfolio Segment \| Land
Origination year
2024/2023			355
2023/2022	352
Total Loans Receivable	352		355
Special Mention \| Commercial Real Estate Portfolio Segment \| Multi-Family
Origination year
2023/2022	186
2021/2020	19		35
Prior	152		32
Total Loans Receivable	357		67
Special Mention \| Commercial Real Estate Portfolio Segment \| Real Estate Construction
Origination year
2025/2024	3		794
Total Loans Receivable	3		794
Substandard
Origination year
2025/2024			520
Prior	228		203
Total Loans Receivable	228		723
Substandard \| Commercial and Industrial \| Commercial Business
Origination year
Prior	53		58
Total Loans Receivable	53		58
Substandard \| Commercial Real Estate Portfolio Segment
Origination year
2025/2024			520
Prior			79
Total Loans Receivable			599
Substandard \| Commercial Real Estate Portfolio Segment \| Commercial Real Estate
Origination year
Prior	73
Total Loans Receivable	73
Substandard \| Commercial Real Estate Portfolio Segment \| Multi-Family
Origination year
Prior	68		30
Total Loans Receivable	68		30
Substandard \| Consumer \| Real estate one-to-four family
Origination year
Prior	34		36
Total Loans Receivable	$ 34		$ 36

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

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
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Amortized cost excluding accrued interest, before allowance for credit loss, of financing receivable. Excludes net investment in lease.

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Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 326
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Reference 3: http://www.xbrl.org/2003/role/disclosureRef
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Amortized cost excluding accrued interest, of financing receivable originated more than five years prior to current fiscal year. Excludes net investment in lease.

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Reference 1: http://www.xbrl.org/2003/role/exampleRef
-Topic 326
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-Section 55
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-Topic 326
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Amount, excluding accrued interest, of writeoff of financing receivable originated more than five years before current fiscal year. Excludes net investment in lease.

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