Loans - Credit quality indicators (Details) - USD ($) $ in Thousands	9 Months Ended
Mar. 31, 2024	Jun. 30, 2023
Term Loans Amortized Cost Basis by Origination Year
Total	$ 481,377
Current period gross charge-offs
Total	13
Total Loans		$ 480,856
Residential and Consumer Loan
Current period gross charge-offs
Total Loans		178,843
Residential and Consumer Loan \| Performing
Current period gross charge-offs
Total Loans		176,671
Residential and Consumer Loan \| Nonperforming
Current period gross charge-offs
Total Loans		2,172
Residential real estate \| 1-4 Family
Term Loans Amortized Cost Basis by Origination Year
2024	8,295
2023	7,862
2022	13,496
2021	15,392
2020	8,520
Prior	74,427
Total	127,992
Current period gross charge-offs
Total Loans		135,046
Residential real estate \| 1-4 Family \| Performing
Term Loans Amortized Cost Basis by Origination Year
2024	8,295
2023	7,862
2022	13,496
2021	15,392
2020	8,520
Prior	73,101
Total	126,666
Current period gross charge-offs
Total Loans		132,956
Residential real estate \| 1-4 Family \| Nonperforming
Term Loans Amortized Cost Basis by Origination Year
Prior	1,326
Total	1,326
Current period gross charge-offs
Total Loans		2,090
Residential real estate \| Home equity and HELOCs
Term Loans Amortized Cost Basis by Origination Year
2024	999
2023	2,230
2022	488
2021	902
2020	609
Prior	5,002
Revolving Loans Amortized Cost Basis	18,897
Revolving Loans Converted to Term	1,542
Total	30,669
Current period gross charge-offs
Total Loans		32,684
Residential real estate \| Home equity and HELOCs \| Performing
Term Loans Amortized Cost Basis by Origination Year
2024	999
2023	2,230
2022	488
2021	902
2020	609
Prior	5,002
Revolving Loans Amortized Cost Basis	18,498
Revolving Loans Converted to Term	1,489
Total	30,217
Current period gross charge-offs
Total Loans		32,684
Residential real estate \| Home equity and HELOCs \| Nonperforming
Term Loans Amortized Cost Basis by Origination Year
Revolving Loans Amortized Cost Basis	399
Revolving Loans Converted to Term	53
Total	452
Residential real estate \| Construction Residential
Term Loans Amortized Cost Basis by Origination Year
2024	4,546
2023	6,727
2022	6
2021	979
Total	12,258
Current period gross charge-offs
Total Loans		9,113
Residential real estate \| Construction Residential \| Performing
Term Loans Amortized Cost Basis by Origination Year
2024	4,546
2023	6,727
2022	6
2021	979
Total	12,258
Current period gross charge-offs
Total Loans		9,113
Consumer
Term Loans Amortized Cost Basis by Origination Year
2024	131
2023	116
2022	40
2020	4
Prior	1,659
Total	1,950
Current period gross charge-offs
Prior	13
Total	13
Total Loans		2,000
Consumer \| Performing
Term Loans Amortized Cost Basis by Origination Year
2024	131
2023	116
2022	40
2020	4
Prior	1,550
Total	1,841
Current period gross charge-offs
Total Loans		1,918
Consumer \| Nonperforming
Term Loans Amortized Cost Basis by Origination Year
Prior	109
Total	109
Current period gross charge-offs
Total Loans		82
Commercial Loan Total
Current period gross charge-offs
Total Loans		302,013
Commercial Loan Total \| Pass
Current period gross charge-offs
Total Loans		298,921
Commercial Loan Total \| Special Mention
Current period gross charge-offs
Total Loans		1,231
Commercial Loan Total \| Substandard
Current period gross charge-offs
Total Loans		1,861
Commercial real estate \| 1-4 Family
Term Loans Amortized Cost Basis by Origination Year
Total	94,297
Commercial real estate \| 1 - 4 family investor
Term Loans Amortized Cost Basis by Origination Year
2024	3,073
2023	12,015
2022	7,250
2021	17,670
2020	11,991
Prior	39,185
Revolving Loans Amortized Cost Basis	2,403
Revolving Loans Converted to Term	710
Total	94,297
Current period gross charge-offs
Total Loans		98,160
Commercial real estate \| 1 - 4 family investor \| Pass
Term Loans Amortized Cost Basis by Origination Year
2024	3,073
2023	12,015
2022	7,250
2021	17,670
2020	11,991
Prior	38,111
Revolving Loans Amortized Cost Basis	2,403
Revolving Loans Converted to Term	710
Total	93,223
Current period gross charge-offs
Total Loans		96,097
Commercial real estate \| 1 - 4 family investor \| Special Mention
Term Loans Amortized Cost Basis by Origination Year
Prior	981
Total	981
Current period gross charge-offs
Total Loans		1,231
Commercial real estate \| 1 - 4 family investor \| Substandard
Term Loans Amortized Cost Basis by Origination Year
2024	0
2023	0
2022	0
2021	0
2020	0
Prior	93
Revolving Loans Amortized Cost Basis	0
Revolving Loans Converted to Term	0
Total	93
Current period gross charge-offs
Total Loans		832
Commercial real estate \| Multi-family (five or more)
Term Loans Amortized Cost Basis by Origination Year
2024	111
2023	1,274
2022	1,322
2021	4,115
2020	5,866
Prior	3,160
Total	15,848
Current period gross charge-offs
Total Loans		15,281
Commercial real estate \| Multi-family (five or more) \| Pass
Term Loans Amortized Cost Basis by Origination Year
2024	111
2023	1,274
2022	1,322
2021	4,115
2020	5,866
Prior	2,954
Total	15,642
Current period gross charge-offs
Total Loans		15,030
Commercial real estate \| Multi-family (five or more) \| Substandard
Term Loans Amortized Cost Basis by Origination Year
Prior	206
Total	206
Current period gross charge-offs
Total Loans		251
Commercial real estate \| Commercial non-residential
Term Loans Amortized Cost Basis by Origination Year
2024	13,255
2023	21,146
2022	61,821
2021	30,518
2020	16,792
Prior	20,206
Revolving Loans Converted to Term	92
Total	163,830
Current period gross charge-offs
Total Loans		157,555
Commercial real estate \| Commercial non-residential \| Pass
Term Loans Amortized Cost Basis by Origination Year
2024	13,255
2023	21,146
2022	61,821
2021	30,199
2020	16,318
Prior	20,188
Revolving Loans Converted to Term	92
Total	163,019
Current period gross charge-offs
Total Loans		156,777
Commercial real estate \| Commercial non-residential \| Substandard
Term Loans Amortized Cost Basis by Origination Year
2021	319
2020	474
Prior	18
Total	811
Current period gross charge-offs
Total Loans		778
Commercial real estate \| Construction and land
Term Loans Amortized Cost Basis by Origination Year
2024	1,285
2023	5,676
2022	10,501
Prior	2,073
Total	19,535
Current period gross charge-offs
Total Loans		15,584
Commercial real estate \| Construction and land \| Pass
Term Loans Amortized Cost Basis by Origination Year
2024	1,285
2023	5,676
2022	10,501
Prior	2,073
Total	19,535
Current period gross charge-offs
Total Loans		15,584
Commercial
Term Loans Amortized Cost Basis by Origination Year
2024	109
2023	7,212
2022	7,429
2020	28
Prior	220
Total	14,998
Current period gross charge-offs
Total Loans		15,433
Commercial \| Pass
Term Loans Amortized Cost Basis by Origination Year
2024	109
2023	7,212
2022	7,429
2020	28
Prior	220
Total	$ 14,998
Current period gross charge-offs
Total Loans		$ 15,433

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

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