Earnings Per Share (Details) - USD ($)	3 Months Ended						9 Months Ended
	Mar. 31, 2021	Dec. 31, 2020	Sep. 30, 2020	Mar. 31, 2020	Dec. 31, 2019	Sep. 30, 2019	Mar. 31, 2021	Mar. 31, 2020
Earnings Per Share
Net income	$ 1,818,745	$ 1,957,537	$ 1,778,848	$ 68,984	$ 361,883	$ 567,896	$ 5,555,130	$ 998,763
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	$ 0.69			$ 0.03			$ 2.12	$ 0.38
Diluted earnings per share	$ 0.69			$ 0.03			$ 2.12	$ 0.38