Loans and Allowance for Loan Losses - Risk rating (Details) - USD ($)	Dec. 31, 2021	Jun. 30, 2021	Dec. 31, 2020
Financing Receivable, Recorded Investment [Line Items]
Total Loans	$ 235,502,457	$ 216,832,440	$ 234,053,332
1-4 Family Owner Occupied
Financing Receivable, Recorded Investment [Line Items]
Total Loans	72,853,855	72,011,570	85,247,077
1-4 Family Non-Owner Occupied
Financing Receivable, Recorded Investment [Line Items]
Total Loans	25,508,136	22,368,557	22,592,637
Multifamily
Financing Receivable, Recorded Investment [Line Items]
Total Loans	100,199,616	91,876,323	88,769,856
Commercial Owner Occupied
Financing Receivable, Recorded Investment [Line Items]
Total Loans	6,135,242	6,405,226	6,474,308
Commercial Non-Owner Occupied
Financing Receivable, Recorded Investment [Line Items]
Total Loans	14,046,851	14,182,106	19,679,205
1-4
Financing Receivable, Recorded Investment [Line Items]
Total Loans	230,367,233	211,512,322
1-4 | 1-4 Family Owner Occupied
Financing Receivable, Recorded Investment [Line Items]
Total Loans	72,296,167	71,319,957
1-4 | 1-4 Family Non-Owner Occupied
Financing Receivable, Recorded Investment [Line Items]
Total Loans	25,508,136	22,368,557
1-4 | Multifamily
Financing Receivable, Recorded Investment [Line Items]
Total Loans	100,199,616	91,876,323
1-4 | Commercial Owner Occupied
Financing Receivable, Recorded Investment [Line Items]
Total Loans	4,796,787	5,064,818
1-4 | Commercial Non-Owner Occupied
Financing Receivable, Recorded Investment [Line Items]
Total Loans	10,825,775	10,917,142
5
Financing Receivable, Recorded Investment [Line Items]
Total Loans	4,378,952	4,526,977
5 | 1-4 Family Owner Occupied
Financing Receivable, Recorded Investment [Line Items]
Total Loans	0	104,137
5 | 1-4 Family Non-Owner Occupied
Financing Receivable, Recorded Investment [Line Items]
Total Loans	0	0
5 | Multifamily
Financing Receivable, Recorded Investment [Line Items]
Total Loans	0	0
5 | Commercial Owner Occupied
Financing Receivable, Recorded Investment [Line Items]
Total Loans	1,157,876	1,157,876
5 | Commercial Non-Owner Occupied
Financing Receivable, Recorded Investment [Line Items]
Total Loans	3,221,076	3,264,964
6
Financing Receivable, Recorded Investment [Line Items]
Total Loans	575,693	793,141
6 | 1-4 Family Owner Occupied
Financing Receivable, Recorded Investment [Line Items]
Total Loans	557,688	587,476
6 | 1-4 Family Non-Owner Occupied
Financing Receivable, Recorded Investment [Line Items]
Total Loans	0	0
6 | Multifamily
Financing Receivable, Recorded Investment [Line Items]
Total Loans	0	0
6 | Commercial Owner Occupied
Financing Receivable, Recorded Investment [Line Items]
Total Loans	0	182,532
6 | Commercial Non-Owner Occupied
Financing Receivable, Recorded Investment [Line Items]
Total Loans	0	0
7
Financing Receivable, Recorded Investment [Line Items]
Total Loans	180,579
7 | 1-4 Family Owner Occupied
Financing Receivable, Recorded Investment [Line Items]
Total Loans	0	0
7 | 1-4 Family Non-Owner Occupied
Financing Receivable, Recorded Investment [Line Items]
Total Loans	0	0
7 | Multifamily
Financing Receivable, Recorded Investment [Line Items]
Total Loans	0	0
7 | Commercial Owner Occupied
Financing Receivable, Recorded Investment [Line Items]
Total Loans	180,579	0
7 | Commercial Non-Owner Occupied
Financing Receivable, Recorded Investment [Line Items]
Total Loans	0	0
Construction, Land, Development
Financing Receivable, Recorded Investment [Line Items]
Total Loans	9,760,179	2,458,461	3,460,986
Construction, Land, Development | 1-4
Financing Receivable, Recorded Investment [Line Items]
Total Loans	9,760,179	2,458,461
Construction, Land, Development | 5
Financing Receivable, Recorded Investment [Line Items]
Total Loans	0	0
Construction, Land, Development | 6
Financing Receivable, Recorded Investment [Line Items]
Total Loans	0	0
Construction, Land, Development | 7
Financing Receivable, Recorded Investment [Line Items]
Total Loans	0	0
Consumer
Financing Receivable, Recorded Investment [Line Items]
Total Loans	6,998,578	7,530,197	$ 7,829,263
Consumer | 1-4
Financing Receivable, Recorded Investment [Line Items]
Total Loans	6,980,573	7,507,064
Consumer | 5
Financing Receivable, Recorded Investment [Line Items]
Total Loans	0	0
Consumer | 6
Financing Receivable, Recorded Investment [Line Items]
Total Loans	18,005	23,133
Consumer | 7
Financing Receivable, Recorded Investment [Line Items]
Total Loans	$ 0	$ 0