Earnings Per Share (Details) - USD ($)	3 Months Ended
	Sep. 30, 2020	Sep. 30, 2019
Earnings Per Share
Net income	$ 1,778,848	$ 567,896
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	$ 0.68	$ 0.22
Diluted earnings per share	$ 0.68	$ 0.22