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Loans Receivable (Details) - Schedule of allowance for loan losses and the recorded investment in loans by portfolio - USD ($) $ in Thousands	Sep. 30, 2021	Jun. 30, 2021
Residential real estate:
Unpaid principal balance and recorded investment	$ 295,600	$ 299,524
Ending allowance attributed to loans	1,610	1,622
Loans individually evaluated for impairment [Member]
Residential real estate:
Loans individually evaluated	5,780	6,041
Loans acquired with deteriorated credit quality	459	595
Unpaid principal balance and recorded investment	6,239	6,636
Ending allowance attributed to loans
Loans individually evaluated for impairment [Member] | One-to four-family [Member]
Residential real estate:
Loans individually evaluated	3,546	3,738
Loans acquired with deteriorated credit quality	459	595
Unpaid principal balance and recorded investment	4,005	4,333
Ending allowance attributed to loans
Loans individually evaluated for impairment [Member] | Multi-family [Member]
Residential real estate:
Loans individually evaluated	587	646
Loans acquired with deteriorated credit quality
Unpaid principal balance and recorded investment	587	646
Ending allowance attributed to loans
Loans individually evaluated for impairment [Member] | Farm [Member]
Residential real estate:
Loans individually evaluated	272	274
Loans acquired with deteriorated credit quality
Unpaid principal balance and recorded investment	272	274
Ending allowance attributed to loans
Loans individually evaluated for impairment [Member] | Nonresidential real estate [Member]
Residential real estate:
Loans individually evaluated	1,349	1,367
Loans acquired with deteriorated credit quality
Unpaid principal balance and recorded investment	1,349	1,367
Ending allowance attributed to loans
Loans individually evaluated for impairment [Member] | Home equity [Member]
Residential real estate:
Loans individually evaluated	16
Loans acquired with deteriorated credit quality
Unpaid principal balance and recorded investment	16
Ending allowance attributed to loans
Loans individually evaluated for impairment [Member] | Unsecured [Member]
Residential real estate:
Loans individually evaluated	10	16
Loans acquired with deteriorated credit quality
Unpaid principal balance and recorded investment	10	16
Ending allowance attributed to loans
Loans collectively evaluated for impairment [Member]
Residential real estate:
Unpaid principal balance and recorded investment	289,361	292,888
Ending allowance attributed to loans	1,610	1,622
Loans collectively evaluated for impairment [Member] | One-to four-family [Member]
Residential real estate:
Unpaid principal balance and recorded investment	218,837	219,792
Ending allowance attributed to loans	754	794
Loans collectively evaluated for impairment [Member] | Multi-family [Member]
Residential real estate:
Unpaid principal balance and recorded investment	19,886	19,135
Ending allowance attributed to loans	290	291
Loans collectively evaluated for impairment [Member] | Farm [Member]
Residential real estate:
Unpaid principal balance and recorded investment	2,114	1,960
Ending allowance attributed to loans	6	5
Loans collectively evaluated for impairment [Member] | Nonresidential real estate [Member]
Residential real estate:
Unpaid principal balance and recorded investment	32,583	34,125
Ending allowance attributed to loans	526	494
Loans collectively evaluated for impairment [Member] | Home equity [Member]
Residential real estate:
Unpaid principal balance and recorded investment	7,465	7,135
Ending allowance attributed to loans	16	15
Loans collectively evaluated for impairment [Member] | Unsecured [Member]
Residential real estate:
Unpaid principal balance and recorded investment	460	537
Ending allowance attributed to loans		1
Loans collectively evaluated for impairment [Member] | Construction [Member]
Residential real estate:
Unpaid principal balance and recorded investment	5,459	5,433
Ending allowance attributed to loans	13	12
Loans collectively evaluated for impairment [Member] | Land [Member]
Residential real estate:
Unpaid principal balance and recorded investment	208	1,308
Ending allowance attributed to loans		3
Loans collectively evaluated for impairment [Member] | Commercial nonmortgage [Member]
Residential real estate:
Unpaid principal balance and recorded investment	1,135	2,259
Ending allowance attributed to loans	3	5
Loans collectively evaluated for impairment [Member] | Loans on deposits [Member]
Residential real estate:
Unpaid principal balance and recorded investment	1,129	1,129
Ending allowance attributed to loans	2	2
Loans collectively evaluated for impairment [Member] | Automobile [Member]
Residential real estate:
Unpaid principal balance and recorded investment	85	75
Ending allowance attributed to loans
Loans collectively evaluated for impairment [Member] | Unallocated [Member]
Residential real estate:
Unpaid principal balance and recorded investment
Ending allowance attributed to loans

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