Available for Sale Securities - Contractual maturities (Details) - USD ($)	Sep. 30, 2020	Jun. 30, 2020
Amortized Cost
Due in one year or less	$ 868,837
Due after one year through 5 years	10,372,312
Due after 5 years through 10 years	5,034,952
Due after 10 years	2,050,000
Subtotal	18,326,101
Total	19,662,573	$ 19,735,451
Fair Value
Due in one year or less	872,970
Due after one year through 5 years	10,620,928
Due after 5 years through 10 years	5,303,127
Due after 10 years	2,159,015
Subtotal	18,956,040
Totals	20,360,859	20,297,595
Mortgage-backed securities
Amortized Cost
Due after one year through 5 years	0
Due after 5 years through 10 years	1,336,472
Total	1,336,472	1,371,753
Fair Value
Due after one year through 5 years	0
Due after 5 years through 10 years	1,404,819
Totals	$ 1,404,819	$ 1,443,643