NET LOANS RECEIVABLE - Risk (Details) - USD ($) $ in Thousands	6 Months Ended		12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Jun. 30, 2024	Jun. 30, 2023
NET LOANS RECEIVABLE
Loans				$ 1,166,638
Term Loans Amortized Cost Basis by Origination Year
Total	$ 1,456,329		$ 1,365,870
Current Period Gross Charge-offs
Total	256	$ 426	610
Commercial
NET LOANS RECEIVABLE
Loans				601,186
Term Loans Amortized Cost Basis by Origination Year
Total	654,268		625,781
Current Period Gross Charge-offs
Total	111	345	345
Commercial | Pass
NET LOANS RECEIVABLE
Loans				533,924
Commercial | Special Mention
NET LOANS RECEIVABLE
Loans				3,591
Commercial | Substandard
NET LOANS RECEIVABLE
Loans				63,553
Commercial | Doubtful
NET LOANS RECEIVABLE
Loans				118
Commercial | Real estate
NET LOANS RECEIVABLE
Loans				411,165
Term Loans Amortized Cost Basis by Origination Year
2024 Transition Period/2024	11,873		29,592
2024/2023	33,387		47,818
2023/2022	46,482		45,558
2022/2021	57,159		23,191
2021/2020	22,212		68,513
Prior	242,099		189,760
Revolving Loans Amortized Cost Basis	1,623		1,769
Total	414,835		406,201
Commercial | Real estate | Pass
NET LOANS RECEIVABLE
Loans				352,874
Term Loans Amortized Cost Basis by Origination Year
2024 Transition Period/2024	11,873		29,592
2024/2023	33,387		47,818
2023/2022	46,482		43,324
2022/2021	54,961		23,191
2021/2020	22,212		67,757
Prior	223,547		168,333
Revolving Loans Amortized Cost Basis	531		679
Total	392,993		380,694
Commercial | Real estate | Special Mention
NET LOANS RECEIVABLE
Loans				1,977
Term Loans Amortized Cost Basis by Origination Year
2023/2022			2,234
Prior	4,918		8,003
Revolving Loans Amortized Cost Basis			1,090
Total	4,918		11,327
Commercial | Real estate | Substandard
NET LOANS RECEIVABLE
Loans				56,196
Term Loans Amortized Cost Basis by Origination Year
2022/2021	2,198
2021/2020			756
Prior	13,634		13,424
Revolving Loans Amortized Cost Basis	1,092
Total	16,924		14,180
Commercial | Real estate | Doubtful
NET LOANS RECEIVABLE
Loans				118
Commercial | Commercial and industrial
NET LOANS RECEIVABLE
Loans				97,307
Term Loans Amortized Cost Basis by Origination Year
2024 Transition Period/2024	11,089		13,945
2024/2023	13,794		6,381
2023/2022	5,472		6,003
2022/2021	4,392		3,066
2021/2020	2,459		5,430
Prior	11,775		8,854
Revolving Loans Amortized Cost Basis	59,493		57,528
Total	108,474		101,207
Current Period Gross Charge-offs
2021/2020	21
Prior	66		345
Revolving Loans Amortized Cost Basis	24
Total	111		345
Commercial | Commercial and industrial | Pass
NET LOANS RECEIVABLE
Loans				89,245
Term Loans Amortized Cost Basis by Origination Year
2024 Transition Period/2024	11,089		13,945
2024/2023	13,794		6,381
2023/2022	5,472		4,868
2022/2021	4,377		3,066
2021/2020	2,459		4,127
Prior	9,354		6,259
Revolving Loans Amortized Cost Basis	59,342		56,628
Total	105,887		95,274
Commercial | Commercial and industrial | Special Mention
NET LOANS RECEIVABLE
Loans				1,614
Term Loans Amortized Cost Basis by Origination Year
2023/2022			1,118
2021/2020			1,250
Prior			221
Revolving Loans Amortized Cost Basis			750
Total			3,339
Commercial | Commercial and industrial | Substandard
NET LOANS RECEIVABLE
Loans				6,448
Term Loans Amortized Cost Basis by Origination Year
2023/2022			17
2022/2021	15
2021/2020			53
Prior	2,304		2,350
Revolving Loans Amortized Cost Basis	151		141
Total	2,470		2,561
Commercial | Commercial and industrial | Doubtful
Term Loans Amortized Cost Basis by Origination Year
Prior	117		24
Revolving Loans Amortized Cost Basis			9
Total	117		33
Commercial | Construction
NET LOANS RECEIVABLE
Loans				92,714
Term Loans Amortized Cost Basis by Origination Year
2024 Transition Period/2024	19,210		38,626
2024/2023	51,227		9,589
2023/2022	8,814		45,073
2022/2021	31,700		19,740
2021/2020	17,582
Prior	1,489		3,794
Revolving Loans Amortized Cost Basis	937		1,551
Total	130,959		118,373
Commercial | Construction | Pass
NET LOANS RECEIVABLE
Loans				91,805
Term Loans Amortized Cost Basis by Origination Year
2024 Transition Period/2024	19,210		38,626
2024/2023	51,227		9,589
2023/2022	8,814		45,073
2022/2021	31,700		19,740
2021/2020	17,582
Prior	1,489		3,794
Revolving Loans Amortized Cost Basis	937		1,551
Total	130,959		118,373
Commercial | Construction | Substandard
NET LOANS RECEIVABLE
Loans				909
Residential mortgages
NET LOANS RECEIVABLE
Loans				463,196
Term Loans Amortized Cost Basis by Origination Year
2024 Transition Period/2024	71,164		180,784
2024/2023	187,372		207,777
2023/2022	199,642		42,819
2022/2021	41,633		56,059
2021/2020	54,754		33,867
Prior	134,890		112,359
Revolving Loans Amortized Cost Basis	114		114
Total	689,569		633,779
Current Period Gross Charge-offs
2023/2022	41		112
Prior	4		6
Total	45		118
Residential mortgages | Performing
Term Loans Amortized Cost Basis by Origination Year
2024 Transition Period/2024	71,164		180,784
2024/2023	187,372		206,815
2023/2022	198,502		42,279
2022/2021	41,117		56,059
2021/2020	54,754		33,286
Prior	132,419		110,234
Revolving Loans Amortized Cost Basis	114		114
Total	685,442		629,571
Residential mortgages | Non-performing
Term Loans Amortized Cost Basis by Origination Year
2024/2023			962
2023/2022	1,140		540
2022/2021	516
2021/2020			581
Prior	2,471		2,125
Total	4,127		4,208
Home equity loans and lines of credit
NET LOANS RECEIVABLE
Loans				85,477
Term Loans Amortized Cost Basis by Origination Year
2024 Transition Period/2024	2,465		6,308
2024/2023	6,219		6,525
2023/2022	5,949		9,574
2022/2021	9,050		3,454
2021/2020	3,209		1,369
Prior	13,755		14,018
Revolving Loans Amortized Cost Basis	54,012		51,517
Revolving Loans Converted to Term	269
Total	94,928		92,765
Current Period Gross Charge-offs
Revolving Loans Amortized Cost Basis			12
Total		12	12
Home equity loans and lines of credit | Performing
Term Loans Amortized Cost Basis by Origination Year
2024 Transition Period/2024	2,465		6,308
2024/2023	6,219		6,525
2023/2022	5,949		9,475
2022/2021	8,955		3,454
2021/2020	3,209		1,369
Prior	13,561		13,375
Revolving Loans Amortized Cost Basis	53,192		50,611
Revolving Loans Converted to Term	269
Total	93,819		91,117
Home equity loans and lines of credit | Non-performing
Term Loans Amortized Cost Basis by Origination Year
2023/2022			99
2022/2021	95
Prior	194		643
Revolving Loans Amortized Cost Basis	820		906
Total	1,109		1,648
Consumer
NET LOANS RECEIVABLE
Loans				$ 16,779
Term Loans Amortized Cost Basis by Origination Year
2024 Transition Period/2024	1,226		1,517
2024/2023	5,249		1,533
2023/2022	556		100
2022/2021	73		67
2021/2020	45		6
Prior	3,222		3,272
Revolving Loans Amortized Cost Basis	7,193		7,050
Total	17,564		13,545
Current Period Gross Charge-offs
2024 Transition Period/2024	46		100
2024/2023	15		6
2023/2022	7		23
2022/2021	3		4
2021/2020			1
Prior	29		1
Total	100	$ 69	135
Consumer | Performing
Term Loans Amortized Cost Basis by Origination Year
2024 Transition Period/2024	1,226		1,517
2024/2023	5,249		1,533
2023/2022	556		100
2022/2021	73		67
2021/2020	45		6
Prior	3,222		3,272
Revolving Loans Amortized Cost Basis	7,193		7,050
Total	$ 17,564		$ 13,545