Earnings Per Share (Details) - USD ($)	3 Months Ended				6 Months Ended
	Dec. 31, 2021	Sep. 30, 2021	Dec. 31, 2020	Sep. 30, 2020	Dec. 31, 2021	Dec. 31, 2020
Earnings Per Share
Net income	$ 535,603	$ 624,051	$ 1,957,537	$ 1,778,848	$ 1,159,654	$ 3,736,385
Basic potential common shares
Weighted average shares outstanding	2,624,343		2,624,343		2,624,343	2,624,343
Basic weighted average shares outstanding	2,624,343		2,624,343		2,624,343	2,624,343
Diluted potential common shares	0		0		0	0
Diluted weighted average shares outstanding	2,624,343		2,624,343		2,624,343	2,624,343
Basic earnings per share	$ 0.20		$ 0.75		$ 0.44	$ 1.42
Diluted earnings per share	$ 0.20		$ 0.75		$ 0.44	$ 1.42