Loans - Loan Delinquencies and Non-accrual Loans (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Mar. 31, 2024	Mar. 31, 2023	Mar. 31, 2024	Mar. 31, 2023	Jun. 30, 2023
Financing Receivable, Past Due [Line Items]
Non-accrual loans secured	$ 2,900		$ 2,900
Non-accrual loans unsecured	109		109
Total Loans	481,377		481,377
Recorded Investment Loans on Non-Accrual	2,997		2,997
Total Loans					$ 480,856
Recorded Investment Loans on Non-Accrual					4,033
Interest income	54		146
Interest income		$ 63		$ 188
30 - 59 Days Past Due
Financing Receivable, Past Due [Line Items]
Total Loans	168		168
Total Past Due					541
60 - 89 Days Past Due
Financing Receivable, Past Due [Line Items]
Total Loans	1,373		1,373
Total Past Due					1,544
90 Days Or Greater
Financing Receivable, Past Due [Line Items]
Total Loans	1,513		1,513
Total Past Due					1,345
Past Due
Financing Receivable, Past Due [Line Items]
Total Loans	3,054		3,054
Total Past Due					3,430
Current
Financing Receivable, Past Due [Line Items]
Total Loans	478,323		478,323
Current					477,354
Acquired credit impaired
Financing Receivable, Past Due [Line Items]
Total Past Due					72
Residential real estate | 1-4 Family
Financing Receivable, Past Due [Line Items]
Total Loans	127,992		127,992
Recorded Investment Loans on Non-Accrual	1,326		1,326
Total Loans					135,046
Recorded Investment Loans on Non-Accrual					2,090
Residential real estate | 1-4 Family | 30 - 59 Days Past Due
Financing Receivable, Past Due [Line Items]
Total Loans	165		165
Total Past Due					290
Residential real estate | 1-4 Family | 60 - 89 Days Past Due
Financing Receivable, Past Due [Line Items]
Total Loans	384		384
Total Past Due					457
Residential real estate | 1-4 Family | 90 Days Or Greater
Financing Receivable, Past Due [Line Items]
Total Loans	250		250
Total Past Due					567
Residential real estate | 1-4 Family | Past Due
Financing Receivable, Past Due [Line Items]
Total Loans	799		799
Total Past Due					1,314
Residential real estate | 1-4 Family | Current
Financing Receivable, Past Due [Line Items]
Total Loans	127,193		127,193
Current					133,660
Residential real estate | 1-4 Family | Acquired credit impaired
Financing Receivable, Past Due [Line Items]
Total Past Due					72
Residential real estate | Home equity and HELOCs
Financing Receivable, Past Due [Line Items]
Total Loans	30,669		30,669
Recorded Investment Loans on Non-Accrual	452		452
Total Loans					32,684
Residential real estate | Home equity and HELOCs | 30 - 59 Days Past Due
Financing Receivable, Past Due [Line Items]
Total Loans	3		3
Residential real estate | Home equity and HELOCs | 90 Days Or Greater
Financing Receivable, Past Due [Line Items]
Total Loans	452		452
Residential real estate | Home equity and HELOCs | Past Due
Financing Receivable, Past Due [Line Items]
Total Loans	455		455
Residential real estate | Home equity and HELOCs | Current
Financing Receivable, Past Due [Line Items]
Total Loans	30,214		30,214
Current					32,684
Residential real estate | Construction Residential
Financing Receivable, Past Due [Line Items]
Total Loans	12,258		12,258
Total Loans					9,113
Residential real estate | Construction Residential | Current
Financing Receivable, Past Due [Line Items]
Total Loans	12,258		12,258
Current					9,113
Commercial real estate | 1-4 Family
Financing Receivable, Past Due [Line Items]
Total Loans	94,297		94,297
Commercial real estate | 1 - 4 family investor
Financing Receivable, Past Due [Line Items]
Total Loans	94,297		94,297
Recorded Investment Loans on Non-Accrual	93		93
Total Loans					98,160
Recorded Investment Loans on Non-Accrual					832
Commercial real estate | 1 - 4 family investor | 60 - 89 Days Past Due
Financing Receivable, Past Due [Line Items]
Total Loans	971		971
Total Past Due					752
Commercial real estate | 1 - 4 family investor | Past Due
Financing Receivable, Past Due [Line Items]
Total Loans	971		971
Total Past Due					752
Commercial real estate | 1 - 4 family investor | Current
Financing Receivable, Past Due [Line Items]
Total Loans	93,326		93,326
Current					97,408
Commercial real estate | Multi-family (five or more)
Financing Receivable, Past Due [Line Items]
Total Loans	15,848		15,848
Recorded Investment Loans on Non-Accrual	206		206
Total Loans					15,281
Recorded Investment Loans on Non-Accrual					251
Commercial real estate | Multi-family (five or more) | 30 - 59 Days Past Due
Financing Receivable, Past Due [Line Items]
Total Past Due					251
Commercial real estate | Multi-family (five or more) | Past Due
Financing Receivable, Past Due [Line Items]
Total Past Due					251
Commercial real estate | Multi-family (five or more) | Current
Financing Receivable, Past Due [Line Items]
Total Loans	15,848		15,848
Current					15,030
Commercial real estate | Commercial non-residential
Financing Receivable, Past Due [Line Items]
Total Loans	163,830		163,830
Recorded Investment Loans on Non-Accrual	811		811
Total Loans					157,555
Recorded Investment Loans on Non-Accrual					778
Commercial real estate | Commercial non-residential | 60 - 89 Days Past Due
Financing Receivable, Past Due [Line Items]
Total Past Due					322
Commercial real estate | Commercial non-residential | 90 Days Or Greater
Financing Receivable, Past Due [Line Items]
Total Loans	811		811
Total Past Due					778
Commercial real estate | Commercial non-residential | Past Due
Financing Receivable, Past Due [Line Items]
Total Loans	811		811
Total Past Due					1,100
Commercial real estate | Commercial non-residential | Current
Financing Receivable, Past Due [Line Items]
Total Loans	163,019		163,019
Current					156,455
Commercial real estate | Construction and land
Financing Receivable, Past Due [Line Items]
Total Loans	19,535		19,535
Total Loans					15,584
Commercial real estate | Construction and land | Current
Financing Receivable, Past Due [Line Items]
Total Loans	19,535		19,535
Current					15,584
Commercial
Financing Receivable, Past Due [Line Items]
Total Loans	14,998		14,998
Total Loans					15,433
Commercial | Current
Financing Receivable, Past Due [Line Items]
Total Loans	14,998		14,998
Current					15,433
Consumer
Financing Receivable, Past Due [Line Items]
Total Loans	1,950		1,950
Recorded Investment Loans on Non-Accrual	109		109
Total Loans					2,000
Recorded Investment Loans on Non-Accrual					82
Consumer | 60 - 89 Days Past Due
Financing Receivable, Past Due [Line Items]
Total Loans	18		18
Total Past Due					13
Consumer | Past Due
Financing Receivable, Past Due [Line Items]
Total Loans	18		18
Total Past Due					13
Consumer | Current
Financing Receivable, Past Due [Line Items]
Total Loans	$ 1,932		$ 1,932
Current					$ 1,987