Loans - Major classifications of loans (Details) - USD ($) $ in Thousands	Jun. 30, 2021	Jun. 30, 2020	Jun. 30, 2019
Loans and Leases Receivable Disclosure [Line Items]
Total Loans	$ 468,072	$ 517,467
Loans in process	(2,443)	(4,895)
Unearned loan origination fees	(820)	(448)
Allowance for loan losses	(3,613)	(3,519)	$ (3,209)
Net Loans	$ 461,196	$ 508,605
Percentage of loans	100.00%	100.00%
Residential real estate \| 1-4 Family
Loans and Leases Receivable Disclosure [Line Items]
Total Loans	$ 173,399	$ 230,955
Allowance for loan losses	$ (709)	$ (682)	(691)
Percentage of loans	37.05%	44.64%
Residential real estate \| Home equity and HELOCs
Loans and Leases Receivable Disclosure [Line Items]
Total Loans	$ 37,222	$ 46,519
Allowance for loan losses	$ (133)	$ (166)	(122)
Percentage of loans	7.95%	8.99%
Residential real estate \| Construction Residential
Loans and Leases Receivable Disclosure [Line Items]
Total Loans	$ 12,945	$ 15,799
Allowance for loan losses	$ (487)	$ (526)	(321)
Percentage of loans	2.77%	3.05%
Commercial real estate \| 1 - 4 family investor
Loans and Leases Receivable Disclosure [Line Items]
Total Loans	$ 120,727	$ 115,495
Allowance for loan losses	$ (843)	$ (801)	(810)
Percentage of loans	25.79%	22.32%
Commercial real estate \| Multi-family (five or more)
Loans and Leases Receivable Disclosure [Line Items]
Total Loans	$ 12,315	$ 14,964
Allowance for loan losses	$ (159)	$ (123)	(71)
Percentage of loans	2.63%	2.89%
Commercial real estate \| Commercial non-residential
Loans and Leases Receivable Disclosure [Line Items]
Total Loans	$ 96,712	$ 76,707
Allowance for loan losses	$ (854)	$ (727)	(708)
Percentage of loans	20.66%	14.83%
Commercial real estate \| Construction and Land
Loans and Leases Receivable Disclosure [Line Items]
Total Loans	$ 6,377	$ 6,690
Allowance for loan losses	$ (362)	$ (396)	(121)
Percentage of loans	1.36%	1.29%
Commercial
Loans and Leases Receivable Disclosure [Line Items]
Total Loans	$ 5,145	$ 6,438
Allowance for loan losses	$ (51)	$ (83)	(95)
Percentage of loans	1.10%	1.24%
Consumer
Loans and Leases Receivable Disclosure [Line Items]
Total Loans	$ 3,230	$ 3,900
Allowance for loan losses	$ (15)	$ (15)	$ (3)
Percentage of loans	0.69%	0.75%

Amount of allowance to cover probable credit losses on loans and leases. Includes carryover of or adjustments to the allowance for loan losses in connection with business combinations. Excludes allowance for loans and leases covered under loss sharing agreements.

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