Loans and Allowance for Loan Losses - Risk rating (Details) - USD ($)	Dec. 31, 2019	Jun. 30, 2019	Dec. 31, 2018
Financing Receivable, Recorded Investment [Line Items]
Total Loans	$ 253,722,425	$ 261,167,368	$ 264,358,717
Construction, Land, Development
Financing Receivable, Recorded Investment [Line Items]
Total Loans	7,242,065	4,318,845	3,220,671
1-4 Family Owner Occupied
Financing Receivable, Recorded Investment [Line Items]
Total Loans	111,606,950	124,845,322	124,729,230
1-4 Family Non-Owner Occupied
Financing Receivable, Recorded Investment [Line Items]
Total Loans	20,152,740	20,968,812	22,315,219
Multifamily
Financing Receivable, Recorded Investment [Line Items]
Total Loans	77,933,467	73,246,392	74,069,572
Commercial Owner Occupied
Financing Receivable, Recorded Investment [Line Items]
Total Loans	8,198,761	8,508,011	8,591,004
Commercial Non-Owner Occupied
Financing Receivable, Recorded Investment [Line Items]
Total Loans	19,265,342	19,502,545	20,782,399
Consumer and Installment Loan
Financing Receivable, Recorded Investment [Line Items]
Total Loans	9,323,100	9,777,441	$ 10,650,622
1-4
Financing Receivable, Recorded Investment [Line Items]
Total Loans	244,645,415	251,522,291
1-4 | Construction, Land, Development
Financing Receivable, Recorded Investment [Line Items]
Total Loans	7,242,065	4,318,845
1-4 | 1-4 Family Owner Occupied
Financing Receivable, Recorded Investment [Line Items]
Total Loans	110,793,849	123,642,066
1-4 | 1-4 Family Non-Owner Occupied
Financing Receivable, Recorded Investment [Line Items]
Total Loans	20,152,740	20,968,812
1-4 | Multifamily
Financing Receivable, Recorded Investment [Line Items]
Total Loans	77,933,467	73,246,392
1-4 | Commercial Owner Occupied
Financing Receivable, Recorded Investment [Line Items]
Total Loans	8,007,747	8,314,410
1-4 | Commercial Non-Owner Occupied
Financing Receivable, Recorded Investment [Line Items]
Total Loans	11,301,175	11,382,336
1-4 | Consumer and Installment Loan
Financing Receivable, Recorded Investment [Line Items]
Total Loans	9,214,372	9,649,430
5
Financing Receivable, Recorded Investment [Line Items]
Total Loans	7,964,167	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	7,964,167	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	803,176	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	579,603	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	191,014	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	32,559	128,011
7
Financing Receivable, Recorded Investment [Line Items]
Total Loans	309,667	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	233,498	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