Loans and Allowance for Loan Losses - Risk rating (Details) - USD ($)	Mar. 31, 2020	Jun. 30, 2019	Mar. 31, 2019
Financing Receivable, Recorded Investment [Line Items]
Total Loans	$ 246,549,421	$ 261,167,368	$ 262,525,803
Construction, Land, Development
Financing Receivable, Recorded Investment [Line Items]
Total Loans	4,762,278	4,318,845	3,316,605
1-4 Family Owner Occupied
Financing Receivable, Recorded Investment [Line Items]
Total Loans	109,212,203	124,845,322	123,505,942
1-4 Family Non-Owner Occupied
Financing Receivable, Recorded Investment [Line Items]
Total Loans	20,098,726	20,968,812	21,031,234
Multifamily
Financing Receivable, Recorded Investment [Line Items]
Total Loans	78,150,768	73,246,392	74,684,437
Commercial Owner Occupied
Financing Receivable, Recorded Investment [Line Items]
Total Loans	6,843,419	8,508,011	8,639,629
Commercial Non-Owner Occupied
Financing Receivable, Recorded Investment [Line Items]
Total Loans	18,744,604	19,502,545	20,904,832
Consumer and Installment Loan
Financing Receivable, Recorded Investment [Line Items]
Total Loans	8,737,423	9,777,441	$ 10,443,124
1-4
Financing Receivable, Recorded Investment [Line Items]
Total Loans	237,399,570	251,522,291
1-4 | Construction, Land, Development
Financing Receivable, Recorded Investment [Line Items]
Total Loans	4,762,278	4,318,845
1-4 | 1-4 Family Owner Occupied
Financing Receivable, Recorded Investment [Line Items]
Total Loans	108,313,308	123,642,066
1-4 | 1-4 Family Non-Owner Occupied
Financing Receivable, Recorded Investment [Line Items]
Total Loans	20,098,726	20,968,812
1-4 | Multifamily
Financing Receivable, Recorded Investment [Line Items]
Total Loans	78,150,768	73,246,392
1-4 | Commercial Owner Occupied
Financing Receivable, Recorded Investment [Line Items]
Total Loans	6,653,717	8,314,410
1-4 | Commercial Non-Owner Occupied
Financing Receivable, Recorded Investment [Line Items]
Total Loans	10,862,375	11,382,336
1-4 | Consumer and Installment Loan
Financing Receivable, Recorded Investment [Line Items]
Total Loans	8,558,398	9,649,430
5
Financing Receivable, Recorded Investment [Line Items]
Total Loans	7,882,229	8,120,209
5 | Construction, Land, Development
Financing Receivable, Recorded Investment [Line Items]
Total Loans	0	0
5 | 1-4 Family Owner Occupied
Financing Receivable, Recorded Investment [Line Items]
Total Loans	0	0
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	0	0
5 | Commercial Non-Owner Occupied
Financing Receivable, Recorded Investment [Line Items]
Total Loans	7,882,229	8,120,209
5 | Consumer and Installment Loan
Financing Receivable, Recorded Investment [Line Items]
Total Loans	0	0
6
Financing Receivable, Recorded Investment [Line Items]
Total Loans	1,191,453	1,217,054
6 | Construction, Land, Development
Financing Receivable, Recorded Investment [Line Items]
Total Loans	0	0
6 | 1-4 Family Owner Occupied
Financing Receivable, Recorded Investment [Line Items]
Total Loans	898,895	895,442
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	189,702	193,601
6 | Commercial Non-Owner Occupied
Financing Receivable, Recorded Investment [Line Items]
Total Loans	0	0
6 | Consumer and Installment Loan
Financing Receivable, Recorded Investment [Line Items]
Total Loans	102,856	128,011
7
Financing Receivable, Recorded Investment [Line Items]
Total Loans	76,169	307,814
7 | Construction, Land, Development
Financing Receivable, Recorded Investment [Line Items]
Total Loans	0	0
7 | 1-4 Family Owner Occupied
Financing Receivable, Recorded Investment [Line Items]
Total Loans	0	307,814
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	0	0
7 | Commercial Non-Owner Occupied
Financing Receivable, Recorded Investment [Line Items]
Total Loans	0	0
7 | Consumer and Installment Loan
Financing Receivable, Recorded Investment [Line Items]
Total Loans	$ 76,169	$ 0