CONDENSED CONSOLIDATED STATEMENTS OF CHANGES IN SHAREHOLDERS' EQUITY - USD ($)	Common Stock [Member]	Additional Paid-in Capital [Member]	Accumulated Deficit [Member]	Total
Balance at Jun. 30, 2020	$ 54,342,864	$ 25,880,165	$ (38,787,452)	$ 41,435,577
Balance (in shares) at Jun. 30, 2020	28,949,410
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Stock-based compensation	$ 0	107,355	0	107,355
Issuance of restricted stock	$ 0	0	0	0
Issuance of restricted stock (in shares)	178,750
Retirement of restricted stock	$ 0	0	0	0
Retirement of restricted stock (in shares)	(162,500)
Net income	$ 0	0	874,266	874,266
Balance at Sep. 30, 2020	$ 54,342,864	25,987,520	(37,913,186)	42,417,198
Balance (in shares) at Sep. 30, 2020	28,965,660
Balance at Jun. 30, 2021	$ 56,057,109	25,608,593	(25,976,686)	55,689,016
Balance (in shares) at Jun. 30, 2021	29,913,095
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Stock-based compensation	$ 0	279,407	0	279,407
Issuance of restricted stock	$ 0	0	0	0
Issuance of restricted stock (in shares)	242,725
Stock option exercises	$ 397,112	(139,742)	0	257,370
Stock option exercises (in shares)	183,637
Net income	$ 0	0	827,025	827,025
Balance at Sep. 30, 2021	$ 56,454,221	$ 25,748,258	$ (25,149,661)	$ 57,052,818
Balance (in shares) at Sep. 30, 2021	30,339,457