Loans - Loan Delinquencies and Non-accrual Loans (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Mar. 31, 2022	Mar. 31, 2021	Mar. 31, 2022	Mar. 31, 2021	Jun. 30, 2021
Financing Receivable, Past Due [Line Items]
Total Loans	$ 461,424		$ 461,424		$ 465,629
Recorded Investment Loans on Non-Accrual	6,536		6,536		5,301
Interest income	76	$ 8	229	$ 71
30 - 59 Days Past Due
Financing Receivable, Past Due [Line Items]
Loans	2,338		2,338		1,953
60 - 89 Days Past Due
Financing Receivable, Past Due [Line Items]
Loans	245		245		1,546
90 Days Or Greater
Financing Receivable, Past Due [Line Items]
Loans	2,977		2,977		1,516
Past Due
Financing Receivable, Past Due [Line Items]
Loans	5,560		5,560		5,015
Current
Financing Receivable, Past Due [Line Items]
Current	455,702		455,702		460,453
Acquired credit impaired
Financing Receivable, Past Due [Line Items]
Loans	162		162		161
Residential real estate | 1-4 Family
Financing Receivable, Past Due [Line Items]
Total Loans	151,435		151,435		173,306
Recorded Investment Loans on Non-Accrual	4,622		4,622		3,774
Residential real estate | 1-4 Family | 30 - 59 Days Past Due
Financing Receivable, Past Due [Line Items]
Loans	1,098		1,098		1,658
Residential real estate | 1-4 Family | 60 - 89 Days Past Due
Financing Receivable, Past Due [Line Items]
Loans	197		197		561
Residential real estate | 1-4 Family | 90 Days Or Greater
Financing Receivable, Past Due [Line Items]
Loans	2,601		2,601		989
Residential real estate | 1-4 Family | Past Due
Financing Receivable, Past Due [Line Items]
Loans	3,896		3,896		3,208
Residential real estate | 1-4 Family | Current
Financing Receivable, Past Due [Line Items]
Current	147,400		147,400		169,960
Residential real estate | 1-4 Family | Acquired credit impaired
Financing Receivable, Past Due [Line Items]
Loans	139		139		138
Residential real estate | Home equity and HELOCs
Financing Receivable, Past Due [Line Items]
Total Loans	32,886		32,886		37,222
Recorded Investment Loans on Non-Accrual	316		316		345
Residential real estate | Home equity and HELOCs | 30 - 59 Days Past Due
Financing Receivable, Past Due [Line Items]
Loans	95		95		58
Residential real estate | Home equity and HELOCs | 60 - 89 Days Past Due
Financing Receivable, Past Due [Line Items]
Loans	16		16		150
Residential real estate | Home equity and HELOCs | 90 Days Or Greater
Financing Receivable, Past Due [Line Items]
Loans	205		205		80
Residential real estate | Home equity and HELOCs | Past Due
Financing Receivable, Past Due [Line Items]
Loans	316		316		288
Residential real estate | Home equity and HELOCs | Current
Financing Receivable, Past Due [Line Items]
Current	32,547		32,547		36,911
Residential real estate | Home equity and HELOCs | Acquired credit impaired
Financing Receivable, Past Due [Line Items]
Loans	23		23		23
Residential real estate | Construction Residential
Financing Receivable, Past Due [Line Items]
Total Loans	10,917		10,917		10,841
Residential real estate | Construction Residential | Current
Financing Receivable, Past Due [Line Items]
Current	10,917		10,917		10,841
Commercial real estate | 1 - 4 family investor
Financing Receivable, Past Due [Line Items]
Total Loans	102,857		102,857		120,581
Recorded Investment Loans on Non-Accrual	111		111		352
Commercial real estate | 1 - 4 family investor | 30 - 59 Days Past Due
Financing Receivable, Past Due [Line Items]
Loans					81
Commercial real estate | 1 - 4 family investor | 90 Days Or Greater
Financing Receivable, Past Due [Line Items]
Loans					271
Commercial real estate | 1 - 4 family investor | Past Due
Financing Receivable, Past Due [Line Items]
Loans					352
Commercial real estate | 1 - 4 family investor | Current
Financing Receivable, Past Due [Line Items]
Current	102,857		102,857		120,229
Commercial real estate | Multi-family (five or more)
Financing Receivable, Past Due [Line Items]
Total Loans	12,417		12,417		12,315
Recorded Investment Loans on Non-Accrual	470		470		176
Commercial real estate | Multi-family (five or more) | 60 - 89 Days Past Due
Financing Receivable, Past Due [Line Items]
Loans					344
Commercial real estate | Multi-family (five or more) | 90 Days Or Greater
Financing Receivable, Past Due [Line Items]
Loans	165		165		176
Commercial real estate | Multi-family (five or more) | Past Due
Financing Receivable, Past Due [Line Items]
Loans	165		165		520
Commercial real estate | Multi-family (five or more) | Current
Financing Receivable, Past Due [Line Items]
Current	12,252		12,252		11,795
Commercial real estate | Commercial non-residential
Financing Receivable, Past Due [Line Items]
Total Loans	138,280		138,280		96,612
Recorded Investment Loans on Non-Accrual	894		894		536
Commercial real estate | Commercial non-residential | 30 - 59 Days Past Due
Financing Receivable, Past Due [Line Items]
Loans	1,145		1,145		92
Commercial real estate | Commercial non-residential | 60 - 89 Days Past Due
Financing Receivable, Past Due [Line Items]
Loans					491
Commercial real estate | Commercial non-residential | Past Due
Financing Receivable, Past Due [Line Items]
Loans	1,145		1,145		583
Commercial real estate | Commercial non-residential | Current
Financing Receivable, Past Due [Line Items]
Current	137,135		137,135		96,029
Commercial real estate | Construction and Land
Financing Receivable, Past Due [Line Items]
Total Loans	4,979		4,979		6,377
Commercial real estate | Construction and Land | Current
Financing Receivable, Past Due [Line Items]
Current	4,979		4,979		6,377
Commercial
Financing Receivable, Past Due [Line Items]
Total Loans	5,291		5,291		5,145
Commercial | Current
Financing Receivable, Past Due [Line Items]
Current	5,291		5,291		5,145
Consumer
Financing Receivable, Past Due [Line Items]
Total Loans	2,362		2,362		3,230
Recorded Investment Loans on Non-Accrual	123		123		118
Consumer | 30 - 59 Days Past Due
Financing Receivable, Past Due [Line Items]
Loans					64
Consumer | 60 - 89 Days Past Due
Financing Receivable, Past Due [Line Items]
Loans	32		32
Consumer | 90 Days Or Greater
Financing Receivable, Past Due [Line Items]
Loans	6		6
Consumer | Past Due
Financing Receivable, Past Due [Line Items]
Loans	38		38		64
Consumer | Current
Financing Receivable, Past Due [Line Items]
Current	$ 2,324		$ 2,324		$ 3,166