Earnings per Common Share (Details) - USD ($)	3 Months Ended				6 Months Ended
	Dec. 31, 2022	Sep. 30, 2022	Dec. 31, 2021	Sep. 30, 2021	Dec. 31, 2022	Dec. 31, 2021
Earnings Per Share
Net income applicable to common stock	$ 301,400	$ 511,153	$ 284,865	$ 417,091	$ 812,553	$ 701,956
Average number of shares outstanding	2,229,423		2,229,497		2,229,460	2,229,497
Less: Average unallocated ESOP shares	80,842		84,586		81,279	85,276
Average number of common shares outstanding used to calculate basic earnings per share	2,148,581		2,144,911		2,148,181	2,144,221
Effect of dilutive restricted stock awards	4,329				3,660
Average number of common shares outstanding used to calculate diluted earnings per share	2,152,910		2,144,911		2,151,841	2,144,221
Earnings per common share:
Basic	$ 0.14		$ 0.13		$ 0.38	$ 0.33
Diluted	$ 0.14		$ 0.13		$ 0.38	$ 0.33