Loans - Loan Delinquencies and Non-accrual Loans (Details) - USD ($) $ in Thousands	12 Months Ended
	Jun. 30, 2022	Jun. 30, 2021
Financing Receivable, Past Due [Line Items]
Total Past Due	$ 5,958	$ 5,015
Total Loans	479,669	465,629
Recorded Investment Loans on Non-Accrual	6,511	5,301
Interest income	275	136
Current	473,555	460,453
30 - 59 Days Past Due
Financing Receivable, Past Due [Line Items]
Total Past Due	1,849	1,953
60 - 89 Days Past Due
Financing Receivable, Past Due [Line Items]
Total Past Due	1,116	1,546
90 Days Or Greater
Financing Receivable, Past Due [Line Items]
Total Past Due	2,993	1,516
Acquired credit impaired
Financing Receivable, Past Due [Line Items]
Total Past Due	156	161
Residential real estate | 1-4 Family
Financing Receivable, Past Due [Line Items]
Total Past Due	4,542	3,208
Total Loans	147,061	173,306
Recorded Investment Loans on Non-Accrual	4,781	3,774
Current	142,386	169,960
Residential real estate | 1-4 Family | 30 - 59 Days Past Due
Financing Receivable, Past Due [Line Items]
Total Past Due	1,528	1,658
Residential real estate | 1-4 Family | 60 - 89 Days Past Due
Financing Receivable, Past Due [Line Items]
Total Past Due	622	561
Residential real estate | 1-4 Family | 90 Days Or Greater
Financing Receivable, Past Due [Line Items]
Total Past Due	2,392	989
Residential real estate | 1-4 Family | Acquired credit impaired
Financing Receivable, Past Due [Line Items]
Total Past Due	133	138
Residential real estate | Home equity and HELOCs
Financing Receivable, Past Due [Line Items]
Total Past Due	202	288
Total Loans	32,529	37,222
Recorded Investment Loans on Non-Accrual	341	345
Current	32,304	36,911
Residential real estate | Home equity and HELOCs | 30 - 59 Days Past Due
Financing Receivable, Past Due [Line Items]
Total Past Due	19	58
Residential real estate | Home equity and HELOCs | 60 - 89 Days Past Due
Financing Receivable, Past Due [Line Items]
Total Past Due		150
Residential real estate | Home equity and HELOCs | 90 Days Or Greater
Financing Receivable, Past Due [Line Items]
Total Past Due	183	80
Residential real estate | Home equity and HELOCs | Acquired credit impaired
Financing Receivable, Past Due [Line Items]
Total Past Due	23	23
Residential real estate | Construction Residential
Financing Receivable, Past Due [Line Items]
Total Loans	14,834	10,841
Current	14,834	10,841
Commercial real estate | 1 - 4 family investor
Financing Receivable, Past Due [Line Items]
Total Past Due		352
Total Loans	96,850	120,581
Recorded Investment Loans on Non-Accrual	106	352
Current	96,850	120,229
Commercial real estate | 1 - 4 family investor | 30 - 59 Days Past Due
Financing Receivable, Past Due [Line Items]
Total Past Due		81
Commercial real estate | 1 - 4 family investor | 90 Days Or Greater
Financing Receivable, Past Due [Line Items]
Total Past Due		271
Commercial real estate | Multi-family (five or more)
Financing Receivable, Past Due [Line Items]
Total Past Due		520
Total Loans	13,069	12,315
Recorded Investment Loans on Non-Accrual	291	176
Current	13,069	11,795
Commercial real estate | Multi-family (five or more) | 60 - 89 Days Past Due
Financing Receivable, Past Due [Line Items]
Total Past Due		344
Commercial real estate | Multi-family (five or more) | 90 Days Or Greater
Financing Receivable, Past Due [Line Items]
Total Past Due		176
Commercial real estate | Commercial non-residential
Financing Receivable, Past Due [Line Items]
Total Past Due	1,187	583
Total Loans	158,727	96,612
Recorded Investment Loans on Non-Accrual	875	536
Current	157,540	96,029
Commercial real estate | Commercial non-residential | 30 - 59 Days Past Due
Financing Receivable, Past Due [Line Items]
Total Past Due	275	92
Commercial real estate | Commercial non-residential | 60 - 89 Days Past Due
Financing Receivable, Past Due [Line Items]
Total Past Due	494	491
Commercial real estate | Commercial non-residential | 90 Days Or Greater
Financing Receivable, Past Due [Line Items]
Total Past Due	418
Commercial real estate | Construction and Land
Financing Receivable, Past Due [Line Items]
Total Loans	4,951	6,377
Current	4,951	6,377
Commercial
Financing Receivable, Past Due [Line Items]
Total Loans	9,409	5,145
Current	9,409	5,145
Consumer
Financing Receivable, Past Due [Line Items]
Total Past Due	27	64
Total Loans	2,239	3,230
Recorded Investment Loans on Non-Accrual	117	118
Current	2,212	3,166
Consumer | 30 - 59 Days Past Due
Financing Receivable, Past Due [Line Items]
Total Past Due	$ 27	$ 64