Loans and Allowance for Loan Losses - Past due loans (Details)	1 Months Ended	9 Months Ended
	May 08, 2020 USD ($) loan	Mar. 31, 2020 USD ($) loan	Jun. 30, 2019 USD ($)
Loans and Leases Receivable Disclosure [Line Items]
Past due loans		$ 2,373,632	$ 4,305,475
TDR's granted during the period | loan	1	0
TDR's defaulted during the period		0
TDR's outstanding	$ 194,000	$ 0	0
Loans transferred out of TDR		0
30-59 days, accruing
Loans and Leases Receivable Disclosure [Line Items]
Past due loans		816,334	2,305,204
60-89 days, accruing
Loans and Leases Receivable Disclosure [Line Items]
Past due loans		289,676	475,403
90 days & over or nonaccrual
Loans and Leases Receivable Disclosure [Line Items]
Past due loans		1,267,622	1,524,868
Construction, Land, Development
Loans and Leases Receivable Disclosure [Line Items]
Past due loans		0	0
Construction, Land, Development | 30-59 days, accruing
Loans and Leases Receivable Disclosure [Line Items]
Past due loans		0	0
Construction, Land, Development | 60-89 days, accruing
Loans and Leases Receivable Disclosure [Line Items]
Past due loans		0	0
Construction, Land, Development | 90 days & over or nonaccrual
Loans and Leases Receivable Disclosure [Line Items]
Past due loans		0	0
1-4 Family Owner Occupied
Loans and Leases Receivable Disclosure [Line Items]
Past due loans		1,899,923	3,782,455
1-4 Family Owner Occupied | 30-59 days, accruing
Loans and Leases Receivable Disclosure [Line Items]
Past due loans		711,352	2,129,016
1-4 Family Owner Occupied | 60-89 days, accruing
Loans and Leases Receivable Disclosure [Line Items]
Past due loans		289,676	450,183
1-4 Family Owner Occupied | 90 days & over or nonaccrual
Loans and Leases Receivable Disclosure [Line Items]
Past due loans		898,895	1,203,256
1-4 Family Non-Owner Occupied
Loans and Leases Receivable Disclosure [Line Items]
Past due loans		64,190	103,706
1-4 Family Non-Owner Occupied | 30-59 days, accruing
Loans and Leases Receivable Disclosure [Line Items]
Past due loans		64,190	103,706
1-4 Family Non-Owner Occupied | 60-89 days, accruing
Loans and Leases Receivable Disclosure [Line Items]
Past due loans		0	0
1-4 Family Non-Owner Occupied | 90 days & over or nonaccrual
Loans and Leases Receivable Disclosure [Line Items]
Past due loans		0	0
Multifamily
Loans and Leases Receivable Disclosure [Line Items]
Past due loans		0	0
Multifamily | 30-59 days, accruing
Loans and Leases Receivable Disclosure [Line Items]
Past due loans		0	0
Multifamily | 60-89 days, accruing
Loans and Leases Receivable Disclosure [Line Items]
Past due loans		0	0
Multifamily | 90 days & over or nonaccrual
Loans and Leases Receivable Disclosure [Line Items]
Past due loans		0	0
Commercial Owner Occupied
Loans and Leases Receivable Disclosure [Line Items]
Past due loans		189,702	193,601
Commercial Owner Occupied | 30-59 days, accruing
Loans and Leases Receivable Disclosure [Line Items]
Past due loans		0	0
Commercial Owner Occupied | 60-89 days, accruing
Loans and Leases Receivable Disclosure [Line Items]
Past due loans		0	0
Commercial Owner Occupied | 90 days & over or nonaccrual
Loans and Leases Receivable Disclosure [Line Items]
Past due loans		189,702	193,601
Commercial Non-Owner Occupied
Loans and Leases Receivable Disclosure [Line Items]
Past due loans		0	0
Commercial Non-Owner Occupied | 30-59 days, accruing
Loans and Leases Receivable Disclosure [Line Items]
Past due loans		0	0
Commercial Non-Owner Occupied | 60-89 days, accruing
Loans and Leases Receivable Disclosure [Line Items]
Past due loans		0	0
Commercial Non-Owner Occupied | 90 days & over or nonaccrual
Loans and Leases Receivable Disclosure [Line Items]
Past due loans		0	0
Consumer and Installment Loan
Loans and Leases Receivable Disclosure [Line Items]
Past due loans		219,817	225,713
Consumer and Installment Loan | 30-59 days, accruing
Loans and Leases Receivable Disclosure [Line Items]
Past due loans		40,792	72,482
Consumer and Installment Loan | 60-89 days, accruing
Loans and Leases Receivable Disclosure [Line Items]
Past due loans			25,220
Consumer and Installment Loan | 90 days & over or nonaccrual
Loans and Leases Receivable Disclosure [Line Items]
Past due loans		$ 179,025	$ 128,011