Available for Sale Securities - Unrealized losses (Details) - Obligations of states and political subdivisions	Mar. 31, 2020 USD ($) security	Jun. 30, 2019 USD ($) security
Debt Securities, Available-for-sale [Line Items]
Continuous Unrealized Losses Existing for Less Than 12 Months, Fair Value		$ 208,583
Continuous Unrealized Losses Existing for Less Than 12 Months, Unrealized Losses		22
Continuous Unrealized Losses Existing for 12 Months or Greater, Fair Value	$ 989,005	2,935,133
Continuous Unrealized Losses Existing for 12 Months or Greater, Unrealized Losses	26,244	58,592
Total, Fair Value	989,005	3,143,716
Total, Unrealized Losses	$ 26,244	$ 58,614
Number of securities with unrealized loss position | security	3	12