Loans - Loan Delinquencies and Non-accrual Loans (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2022	Dec. 31, 2021	Jun. 30, 2022
Financing Receivable, Past Due [Line Items]
Total Loans	$ 496,198		$ 496,198		$ 479,669
Recorded Investment Loans on Non-Accrual	4,256		4,256		6,511
Interest income	56	$ 58	111	$ 115
30 - 59 Days Past Due
Financing Receivable, Past Due [Line Items]
Total Past Due	1,027		1,027		1,849
60 - 89 Days Past Due
Financing Receivable, Past Due [Line Items]
Total Past Due	2,371		2,371		1,116
90 Days Or Greater
Financing Receivable, Past Due [Line Items]
Total Past Due	1,561		1,561		2,993
Past Due
Financing Receivable, Past Due [Line Items]
Total Past Due	4,959		4,959		5,958
Current
Financing Receivable, Past Due [Line Items]
Current	491,085		491,085		473,555
Acquired credit impaired
Financing Receivable, Past Due [Line Items]
Total Past Due	154		154		156
Residential real estate | 1-4 Family
Financing Receivable, Past Due [Line Items]
Total Loans	142,055		142,055		147,061
Recorded Investment Loans on Non-Accrual	2,895		2,895		4,781
Residential real estate | 1-4 Family | 30 - 59 Days Past Due
Financing Receivable, Past Due [Line Items]
Total Past Due	599		599		1,528
Residential real estate | 1-4 Family | 60 - 89 Days Past Due
Financing Receivable, Past Due [Line Items]
Total Past Due	1,595		1,595		622
Residential real estate | 1-4 Family | 90 Days Or Greater
Financing Receivable, Past Due [Line Items]
Total Past Due	1,240		1,240		2,392
Residential real estate | 1-4 Family | Past Due
Financing Receivable, Past Due [Line Items]
Total Past Due	3,434		3,434		4,542
Residential real estate | 1-4 Family | Current
Financing Receivable, Past Due [Line Items]
Current	138,490		138,490		142,386
Residential real estate | 1-4 Family | Acquired credit impaired
Financing Receivable, Past Due [Line Items]
Total Past Due	131		131		133
Residential real estate | Home equity and HELOCs
Financing Receivable, Past Due [Line Items]
Total Loans	32,527		32,527		32,529
Recorded Investment Loans on Non-Accrual	91		91		341
Residential real estate | Home equity and HELOCs | 30 - 59 Days Past Due
Financing Receivable, Past Due [Line Items]
Total Past Due	147		147		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	147		147		202
Residential real estate | Home equity and HELOCs | Current
Financing Receivable, Past Due [Line Items]
Current	32,357		32,357		32,304
Residential real estate | Home equity and HELOCs | Acquired credit impaired
Financing Receivable, Past Due [Line Items]
Total Past Due	23		23		23
Residential real estate | Construction Residential
Financing Receivable, Past Due [Line Items]
Total Loans	11,736		11,736		14,834
Residential real estate | Construction Residential | Current
Financing Receivable, Past Due [Line Items]
Current	11,736		11,736		14,834
Commercial real estate | 1 - 4 family investor
Financing Receivable, Past Due [Line Items]
Total Loans	99,589		99,589		96,850
Recorded Investment Loans on Non-Accrual	94		94		106
Commercial real estate | 1 - 4 family investor | Current
Financing Receivable, Past Due [Line Items]
Current	99,589		99,589		96,850
Commercial real estate | Multi-family (five or more)
Financing Receivable, Past Due [Line Items]
Total Loans	15,595		15,595		13,069
Recorded Investment Loans on Non-Accrual	275		275		291
Commercial real estate | Multi-family (five or more) | 30 - 59 Days Past Due
Financing Receivable, Past Due [Line Items]
Total Past Due	275		275
Commercial real estate | Multi-family (five or more) | 60 - 89 Days Past Due
Financing Receivable, Past Due [Line Items]
Total Past Due	776		776
Commercial real estate | Multi-family (five or more) | Past Due
Financing Receivable, Past Due [Line Items]
Total Past Due	1,051		1,051
Commercial real estate | Multi-family (five or more) | Current
Financing Receivable, Past Due [Line Items]
Current	14,544		14,544		13,069
Commercial real estate | Commercial non-residential
Financing Receivable, Past Due [Line Items]
Total Loans	166,154		166,154		158,727
Recorded Investment Loans on Non-Accrual	785		785		875
Commercial real estate | Commercial non-residential | 30 - 59 Days Past Due
Financing Receivable, Past Due [Line Items]
Total Past Due					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	308		308		418
Commercial real estate | Commercial non-residential | Past Due
Financing Receivable, Past Due [Line Items]
Total Past Due	308		308		1,187
Commercial real estate | Commercial non-residential | Current
Financing Receivable, Past Due [Line Items]
Current	165,846		165,846		157,540
Commercial real estate | Construction and Land
Financing Receivable, Past Due [Line Items]
Total Loans	10,750		10,750		4,951
Commercial real estate | Construction and Land | Current
Financing Receivable, Past Due [Line Items]
Current	10,750		10,750		4,951
Commercial
Financing Receivable, Past Due [Line Items]
Total Loans	15,577		15,577		9,409
Commercial | Current
Financing Receivable, Past Due [Line Items]
Current	15,577		15,577		9,409
Consumer
Financing Receivable, Past Due [Line Items]
Total Loans	2,215		2,215		2,239
Recorded Investment Loans on Non-Accrual	116		116		117
Consumer | 30 - 59 Days Past Due
Financing Receivable, Past Due [Line Items]
Total Past Due	6		6		27
Consumer | 90 Days Or Greater
Financing Receivable, Past Due [Line Items]
Total Past Due	13		13
Consumer | Past Due
Financing Receivable, Past Due [Line Items]
Total Past Due	19		19		27
Consumer | Current
Financing Receivable, Past Due [Line Items]
Current	$ 2,196		$ 2,196		$ 2,212