Debt Securities - Contractual maturity (Details) - USD ($)	Mar. 31, 2022	Jun. 30, 2021
Available for sale securities, Amortized cost
Due in one year or less	$ 234,970
Due from more than one to five years	4,497,723
Due from more than five to ten years	3,580,000
Total amortized cost with maturity	8,312,693
Amortized cost	11,437,033	$ 10,649,706
Available for sale securities, Fair value
Due in one year or less	233,272
Due from more than one to five years	4,425,118
Due from more than five to ten years	3,440,203
Total fair value with maturity	8,098,593
Fair Value	11,216,706	10,909,764
Held to maturity securities, Amortized cost
Amortized cost	552,174	708,949
Held to maturity securities, Fair value
Fair Value	519,521	770,438
Mortgage-backed
Available for sale securities, Amortized cost
Without single maturity	3,124,340
Amortized cost	3,124,340	4,557,465
Available for sale securities, Fair value
Without single maturity	3,118,113
Fair Value	3,118,113	4,711,568
Held to maturity securities, Amortized cost
Without single maturity	552,174
Amortized cost	552,174	708,949
Held to maturity securities, Fair value
Without single maturity	519,521
Fair Value	$ 519,521	$ 770,438