Loans - Loan Delinquencies and Non-accrual Loans (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2021	Dec. 31, 2020	Jun. 30, 2021
Financing Receivable, Past Due [Line Items]
Total Loans	$ 461,140		$ 461,140		$ 465,629
Recorded Investment Loans on Non-Accrual	5,000		5,000		5,301
Interest income	58	$ 60	115	$ 120
30 - 59 Days Past Due
Financing Receivable, Past Due [Line Items]
Loans	2,010		2,010		1,953
60 - 89 Days Past Due
Financing Receivable, Past Due [Line Items]
Loans	139		139		1,546
90 Days Or Greater
Financing Receivable, Past Due [Line Items]
Loans	1,291		1,291		1,516
Past Due
Financing Receivable, Past Due [Line Items]
Loans	3,440		3,440		5,015
Current
Financing Receivable, Past Due [Line Items]
Current	457,539		457,539		460,453
Acquired credit impaired
Financing Receivable, Past Due [Line Items]
Loans	161		161		161
Residential real estate | 1-4 Family
Financing Receivable, Past Due [Line Items]
Total Loans	156,354		156,354		173,306
Recorded Investment Loans on Non-Accrual	2,952		2,952		3,774
Residential real estate | 1-4 Family | 30 - 59 Days Past Due
Financing Receivable, Past Due [Line Items]
Loans	1,127		1,127		1,658
Residential real estate | 1-4 Family | 60 - 89 Days Past Due
Financing Receivable, Past Due [Line Items]
Loans	112		112		561
Residential real estate | 1-4 Family | 90 Days Or Greater
Financing Receivable, Past Due [Line Items]
Loans	768		768		989
Residential real estate | 1-4 Family | Past Due
Financing Receivable, Past Due [Line Items]
Loans	2,007		2,007		3,208
Residential real estate | 1-4 Family | Current
Financing Receivable, Past Due [Line Items]
Current	154,209		154,209		169,960
Residential real estate | 1-4 Family | Acquired credit impaired
Financing Receivable, Past Due [Line Items]
Loans	138		138		138
Residential real estate | Home equity and HELOCs
Financing Receivable, Past Due [Line Items]
Total Loans	32,201		32,201		37,222
Recorded Investment Loans on Non-Accrual	264		264		345
Residential real estate | Home equity and HELOCs | 30 - 59 Days Past Due
Financing Receivable, Past Due [Line Items]
Loans					58
Residential real estate | Home equity and HELOCs | 60 - 89 Days Past Due
Financing Receivable, Past Due [Line Items]
Loans					150
Residential real estate | Home equity and HELOCs | 90 Days Or Greater
Financing Receivable, Past Due [Line Items]
Loans	152		152		80
Residential real estate | Home equity and HELOCs | Past Due
Financing Receivable, Past Due [Line Items]
Loans	152		152		288
Residential real estate | Home equity and HELOCs | Current
Financing Receivable, Past Due [Line Items]
Current	32,026		32,026		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	10,264		10,264		10,841
Residential real estate | Construction Residential | Current
Financing Receivable, Past Due [Line Items]
Current	10,264		10,264		10,841
Commercial real estate | 1 - 4 family investor
Financing Receivable, Past Due [Line Items]
Total Loans	114,234		114,234		120,581
Recorded Investment Loans on Non-Accrual	196		196		352
Commercial real estate | 1 - 4 family investor | 30 - 59 Days Past Due
Financing Receivable, Past Due [Line Items]
Loans	406		406		81
Commercial real estate | 1 - 4 family investor | 90 Days Or Greater
Financing Receivable, Past Due [Line Items]
Loans	126		126		271
Commercial real estate | 1 - 4 family investor | Past Due
Financing Receivable, Past Due [Line Items]
Loans	532		532		352
Commercial real estate | 1 - 4 family investor | Current
Financing Receivable, Past Due [Line Items]
Current	113,702		113,702		120,229
Commercial real estate | Multi-family (five or more)
Financing Receivable, Past Due [Line Items]
Total Loans	11,276		11,276		12,315
Recorded Investment Loans on Non-Accrual	482		482		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	169		169		176
Commercial real estate | Multi-family (five or more) | Past Due
Financing Receivable, Past Due [Line Items]
Loans	169		169		520
Commercial real estate | Multi-family (five or more) | Current
Financing Receivable, Past Due [Line Items]
Current	11,107		11,107		11,795
Commercial real estate | Commercial non-residential
Financing Receivable, Past Due [Line Items]
Total Loans	124,768		124,768		96,612
Recorded Investment Loans on Non-Accrual	945		945		536
Commercial real estate | Commercial non-residential | 30 - 59 Days Past Due
Financing Receivable, Past Due [Line Items]
Loans	471		471		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	471		471		583
Commercial real estate | Commercial non-residential | Current
Financing Receivable, Past Due [Line Items]
Current	124,297		124,297		96,029
Commercial real estate | Construction and Land
Financing Receivable, Past Due [Line Items]
Total Loans	6,484		6,484		6,377
Commercial real estate | Construction and Land | Current
Financing Receivable, Past Due [Line Items]
Current	6,484		6,484		6,377
Commercial
Financing Receivable, Past Due [Line Items]
Total Loans	3,066		3,066		5,145
Recorded Investment Loans on Non-Accrual	21		21
Commercial | 90 Days Or Greater
Financing Receivable, Past Due [Line Items]
Loans	21		21
Commercial | Past Due
Financing Receivable, Past Due [Line Items]
Loans	21		21
Commercial | Current
Financing Receivable, Past Due [Line Items]
Current	3,045		3,045		5,145
Consumer
Financing Receivable, Past Due [Line Items]
Total Loans	2,493		2,493		3,230
Recorded Investment Loans on Non-Accrual	140		140		118
Consumer | 30 - 59 Days Past Due
Financing Receivable, Past Due [Line Items]
Loans	6		6		64
Consumer | 60 - 89 Days Past Due
Financing Receivable, Past Due [Line Items]
Loans	27		27
Consumer | 90 Days Or Greater
Financing Receivable, Past Due [Line Items]
Loans	55		55
Consumer | Past Due
Financing Receivable, Past Due [Line Items]
Loans	88		88		64
Consumer | Current
Financing Receivable, Past Due [Line Items]
Current	$ 2,405		$ 2,405		$ 3,166