Earnings Per Share (Details) - USD ($)	3 Months Ended
	Sep. 30, 2021	Sep. 30, 2020
Earnings Per Share
Net income	$ 624,051	$ 1,778,848
Basic potential common shares
Weighted average shares outstanding	2,624,343	2,624,343
Basic weighted average shares outstanding	2,624,343	2,624,343
Diluted potential common shares	0	0
Diluted weighted average shares outstanding	2,624,343	2,624,343
Basic earnings per share	$ 0.24	$ 0.68
Diluted earnings per share	$ 0.24	$ 0.68