Significant Accounting Policies - Earnings per Common Share (Details) - USD ($)	12 Months Ended
	Jun. 30, 2022	Jun. 30, 2021
Significant Accounting Policies
Net income	$ 1,334,763	$ 1,373,059
Average number of shares outstanding	2,229,497	2,229,497
Less: Average unallocated ESOP shares	84,402	87,023
Average number of common shares outstanding used to calculate basic earnings per share	2,145,095	2,142,474
Earnings per common share:
Basic	$ 0.62	$ 0.64
Diluted	$ 0.62	$ 0.64