Available for Sale Securities - Contractual maturities (Details) - USD ($)	Mar. 31, 2021	Jun. 30, 2020
Amortized Cost
Due in one year or less	$ 865,000
Due after one year through 5 years	10,159,186
Due after 5 years through 10 years	4,864,135
Due after 10 years	5,183,933
Subtotal	21,072,254
Total	22,337,662	$ 19,735,451
Fair Value
Due in one year or less	865,364
Due after one year through 5 years	10,391,008
Due after 5 years through 10 years	4,942,531
Due after 10 years	5,046,151
Subtotal	21,245,054
Totals	22,564,568	20,297,595
Mortgage-backed securities
Amortized Cost
Due after one year through 5 years	0
Due after 5 years through 10 years	1,265,408
Total	1,265,408	1,371,753
Fair Value
Due after one year through 5 years	0
Due after 5 years through 10 years	1,319,514
Totals	$ 1,319,514	$ 1,443,643