Loans - Loan Delinquencies and Non-accrual Loans (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Mar. 31, 2023	Mar. 31, 2022	Mar. 31, 2023	Mar. 31, 2022	Jun. 30, 2022
Financing Receivable, Past Due [Line Items]
Total Loans	$ 488,865		$ 488,865		$ 479,669
Recorded Investment Loans on Non-Accrual	4,241		4,241		6,511
Interest income	63	$ 76	188	$ 229
30 - 59 Days Past Due
Financing Receivable, Past Due [Line Items]
Total Past Due	645		645		1,849
60 - 89 Days Past Due
Financing Receivable, Past Due [Line Items]
Total Past Due	773		773		1,116
90 Days Or Greater
Financing Receivable, Past Due [Line Items]
Total Past Due	2,507		2,507		2,993
Past Due
Financing Receivable, Past Due [Line Items]
Total Past Due	3,925		3,925		5,958
Current
Financing Receivable, Past Due [Line Items]
Current	484,865		484,865		473,555
Acquired credit impaired
Financing Receivable, Past Due [Line Items]
Total Past Due	75		75		156
Residential real estate | 1-4 Family
Financing Receivable, Past Due [Line Items]
Total Loans	139,106		139,106		147,061
Recorded Investment Loans on Non-Accrual	2,900		2,900		4,781
Residential real estate | 1-4 Family | 30 - 59 Days Past Due
Financing Receivable, Past Due [Line Items]
Total Past Due	61		61		1,528
Residential real estate | 1-4 Family | 60 - 89 Days Past Due
Financing Receivable, Past Due [Line Items]
Total Past Due	506		506		622
Residential real estate | 1-4 Family | 90 Days Or Greater
Financing Receivable, Past Due [Line Items]
Total Past Due	1,694		1,694		2,392
Residential real estate | 1-4 Family | Past Due
Financing Receivable, Past Due [Line Items]
Total Past Due	2,261		2,261		4,542
Residential real estate | 1-4 Family | Current
Financing Receivable, Past Due [Line Items]
Current	136,770		136,770		142,386
Residential real estate | 1-4 Family | Acquired credit impaired
Financing Receivable, Past Due [Line Items]
Total Past Due	75		75		133
Residential real estate | Home equity and HELOCs
Financing Receivable, Past Due [Line Items]
Total Loans	32,567		32,567		32,529
Recorded Investment Loans on Non-Accrual	90		90		341
Residential real estate | Home equity and HELOCs | 30 - 59 Days Past Due
Financing Receivable, Past Due [Line Items]
Total Past Due					19
Residential real estate | Home equity and HELOCs | 90 Days Or Greater
Financing Receivable, Past Due [Line Items]
Total Past Due					183
Residential real estate | Home equity and HELOCs | Past Due
Financing Receivable, Past Due [Line Items]
Total Past Due					202
Residential real estate | Home equity and HELOCs | Current
Financing Receivable, Past Due [Line Items]
Current	32,567		32,567		32,304
Residential real estate | Home equity and HELOCs | Acquired credit impaired
Financing Receivable, Past Due [Line Items]
Total Past Due					23
Residential real estate | Construction Residential
Financing Receivable, Past Due [Line Items]
Total Loans	10,138		10,138		14,834
Residential real estate | Construction Residential | Current
Financing Receivable, Past Due [Line Items]
Current	10,138		10,138		14,834
Commercial real estate | 1 - 4 family investor
Financing Receivable, Past Due [Line Items]
Total Loans	98,115		98,115		96,850
Recorded Investment Loans on Non-Accrual	88		88		106
Commercial real estate | 1 - 4 family investor | Current
Financing Receivable, Past Due [Line Items]
Current	98,115		98,115		96,850
Commercial real estate | Multi-family (five or more)
Financing Receivable, Past Due [Line Items]
Total Loans	15,613		15,613		13,069
Recorded Investment Loans on Non-Accrual	267		267		291
Commercial real estate | Multi-family (five or more) | 60 - 89 Days Past Due
Financing Receivable, Past Due [Line Items]
Total Past Due	267		267
Commercial real estate | Multi-family (five or more) | Past Due
Financing Receivable, Past Due [Line Items]
Total Past Due	267		267
Commercial real estate | Multi-family (five or more) | Current
Financing Receivable, Past Due [Line Items]
Current	15,346		15,346		13,069
Commercial real estate | Commercial non-residential
Financing Receivable, Past Due [Line Items]
Total Loans	164,592		164,592		158,727
Recorded Investment Loans on Non-Accrual	781		781		875
Commercial real estate | Commercial non-residential | 30 - 59 Days Past Due
Financing Receivable, Past Due [Line Items]
Total Past Due	564		564		275
Commercial real estate | Commercial non-residential | 60 - 89 Days Past Due
Financing Receivable, Past Due [Line Items]
Total Past Due					494
Commercial real estate | Commercial non-residential | 90 Days Or Greater
Financing Receivable, Past Due [Line Items]
Total Past Due	781		781		418
Commercial real estate | Commercial non-residential | Past Due
Financing Receivable, Past Due [Line Items]
Total Past Due	1,345		1,345		1,187
Commercial real estate | Commercial non-residential | Current
Financing Receivable, Past Due [Line Items]
Current	163,247		163,247		157,540
Commercial real estate | Construction and Land
Financing Receivable, Past Due [Line Items]
Total Loans	13,898		13,898		4,951
Commercial real estate | Construction and Land | Current
Financing Receivable, Past Due [Line Items]
Current	13,898		13,898		4,951
Commercial
Financing Receivable, Past Due [Line Items]
Total Loans	12,692		12,692		9,409
Commercial | Current
Financing Receivable, Past Due [Line Items]
Current	12,692		12,692		9,409
Consumer
Financing Receivable, Past Due [Line Items]
Total Loans	2,144		2,144		2,239
Recorded Investment Loans on Non-Accrual	115		115		117
Consumer | 30 - 59 Days Past Due
Financing Receivable, Past Due [Line Items]
Total Past Due	20		20		27
Consumer | 90 Days Or Greater
Financing Receivable, Past Due [Line Items]
Total Past Due	32		32
Consumer | Past Due
Financing Receivable, Past Due [Line Items]
Total Past Due	52		52		27
Consumer | Current
Financing Receivable, Past Due [Line Items]
Current	$ 2,092		$ 2,092		$ 2,212