Significant Accounting Policies - Earnings per Common Share (Details) - USD ($)	12 Months Ended
	Jun. 30, 2023	Jun. 30, 2022
Significant Accounting Policies
Net income applicable to common stock	$ 1,672,070	$ 1,334,763
Average number of shares outstanding	2,189,017	2,229,497
Less: Average unallocated ESOP shares	80,405	84,402
Average number of common shares outstanding used to calculate basic earnings per share	2,108,612	2,145,095
Effect of dilutive restricted stock awards	3,897
Average number of common shares outstanding used to calculate diluted earnings per share	2,112,509	2,145,095
Earnings per common share:
Basic	$ 0.79	$ 0.62
Diluted	$ 0.79	$ 0.62