CONDENSED CONSOLIDATED STATEMENTS OF CHANGES IN SHAREHOLDERS' EQUITY (unaudited) - USD ($)	Common Stock [Member]	Additional Paid-in Capital [Member]	Accumulated Deficit [Member]	Total
Balance at Jun. 30, 2018	$ 54,243,816	$ 14,962,071	$ (35,387,454)	$ 33,818,433
Balance (in shares) at Jun. 30, 2018	21,705,173
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Stock-based compensation	$ 0	71,176	0	71,176
Retirement of restricted stock	$ 0	0	0	0
Retirement of restricted stock (in shares)	(109,604)
Stock option exercises	$ 3,480	(1,229)	0	2,251
Stock option exercises (in shares)	2,500
Net income	$ 0	0	109,903	109,903
Balance at Sep. 30, 2018	$ 54,247,296	15,032,018	(35,277,551)	34,001,763
Balance (in shares) at Sep. 30, 2018	21,598,069
Balance at Jun. 30, 2019	$ 54,342,864	24,488,147	(33,111,987)	45,719,024
Balance (in shares) at Jun. 30, 2019	28,027,569
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Issuance of common stock, , net of offering costs	$ 0	932,480	0	932,480
Issuance of common stock, , net of offering costs (in shares)	630,500
Stock-based compensation	$ 0	212,380	0	212,380
Issuance of restricted stock	$ 0	0	0	0
Issuance of restricted stock (in shares)	325,000
Retirement of restricted stock	$ 0	0	0	0
Retirement of restricted stock (in shares)	(1,159)
Net income	$ 0	0	207,319	207,319
Balance at Sep. 30, 2019	$ 54,342,864	$ 25,633,007	$ (32,904,668)	$ 47,071,203
Balance (in shares) at Sep. 30, 2019	28,981,910