Fair Value of Financial Instruments - Non-recurring (Details) - USD ($)	Jun. 30, 2021	Jun. 30, 2020	Jun. 30, 2019
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Other real estate owned, net	$ 167,590	$ 2,288,255	$ 4,080,401
Carrying value of impaired loans	205,665	454,853
Impaired loans - related allowance	88,759	205,923
Non-recurring
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Impaired loans with a valuation allowance, net	116,906	248,930
Other real estate owned, net	167,590	2,288,255
Total	284,496	2,537,185
Non-recurring | Level 1
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Impaired loans with a valuation allowance, net	0	0
Other real estate owned, net	0	0
Total	0	0
Non-recurring | Level 2
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Impaired loans with a valuation allowance, net	0	0
Other real estate owned, net	0	0
Total	0	0
Non-recurring | Level 3
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Impaired loans with a valuation allowance, net	116,906	248,930
Other real estate owned, net	167,590	2,288,255
Total	$ 284,496	$ 2,537,185