Debt Securities - Contractual maturity (Details) - USD ($)	Jun. 30, 2022	Jun. 30, 2021
Available for sale securities, Amortized cost
Due in one year or less	$ 170,000
Due from more than one to five years	4,478,401
Due from more than five to ten years	3,580,000
Total amortized cost with maturity	8,228,401
Amortized cost	11,053,947	$ 10,649,706
Available for sale securities, Fair value
Due in one year or less	168,670
Due from more than one to five years	4,329,548
Due from more than five to ten years	3,379,966
Total fair value with maturity	7,878,184
Fair Value	10,617,238	10,909,764
Held to maturity securities, Amortized cost
Amortized cost	532,363	708,949
Held to maturity securities, Fair value
Fair Value	419,000	770,438
Mortgage-backed
Available for sale securities, Amortized cost
Without single maturity	2,825,546
Amortized cost	2,825,546	4,557,465
Available for sale securities, Fair value
Without single maturity	2,739,054
Fair Value	2,739,054	4,711,568
Held to maturity securities, Amortized cost
Without single maturity	532,363
Amortized cost	532,363	708,949
Held to maturity securities, Fair value
Without single maturity	419,000
Fair Value	$ 419,000	$ 770,438