Debt Securities - Contractual maturity (Details) - USD ($)	Sep. 30, 2022	Jun. 30, 2022
Available for sale securities, Amortized cost
Due in one year or less	$ 60,000
Due from more than one to five years	3,381,685
Due from more than five to ten years	4,659,956
Total amortized cost with maturity	8,101,641
Amortized cost	10,704,375	$ 11,053,947
Available for sale securities, Fair value
Due in one year or less	59,542
Due from more than one to five years	3,279,527
Due from more than five to ten years	4,259,370
Total fair value with maturity	7,598,439
Fair Value	10,089,176	10,617,238
Held to maturity securities, Amortized cost
Amortized cost	526,517	532,363
Held to maturity securities, Fair value
Fair Value	383,742	419,000
Mortgage-backed
Available for sale securities, Amortized cost
Without single maturity	2,602,734
Amortized cost	2,602,734	2,825,546
Available for sale securities, Fair value
Without single maturity	2,490,737
Fair Value	2,490,737	2,739,054
Held to maturity securities, Amortized cost
Without single maturity	526,517
Amortized cost	526,517	532,363
Held to maturity securities, Fair value
Without single maturity	383,742
Fair Value	$ 383,742	$ 419,000