Consolidated Statements of Stockholders' Equity - USD ($)	Preferred Stock	Common Stock	Additional Paid-in Capital	Accumulated Deficit	Total
Beginning balance, shares at Jun. 30, 2018	4,030	200,554,205
Beginning balance at Jun. 30, 2018	$ 40	$ 2,005,542	$ 357,005,233	$ (332,045,906)	$ 26,964,909
Cumulative effect of accounting change				500,000	500,000
Stock-based compensation, shares		319,817
Stock-based compensation		$ 3,198	1,230,387		1,233,585
Sale of common stock , net of costs, shares		2,225,145
Sale of common stock , net of costs		$ 22,251	2,200,196		2,222,447
Withholding taxes related to restricted stock units, shares		(67,038)
Withholding taxes related to restricted stock units		$ (670)	(65,322)		(65,992)
Net loss				(5,682,056)	(5,682,056)
Ending balance, shares at Sep. 30, 2018	4,030	203,032,129
Ending balance at Sep. 30, 2018	$ 40	$ 2,030,321	360,370,494	(337,227,962)	25,172,893
Beginning balance, shares at Jun. 30, 2019	4,030	226,815,363
Beginning balance at Jun. 30, 2019	$ 40	$ 2,268,154	394,053,929	(295,772,879)	100,549,244
Stock-based compensation, shares		224,000
Stock-based compensation		$ 2,240	825,495		827,735
Sale of common stock , net of costs, shares		657,894
Sale of common stock , net of costs		$ 6,579	573,151		579,730
Warrant repurchase			(1,333,497)		(1,333,497)
Net loss				(4,500,949)	(4,500,949)
Ending balance, shares at Sep. 30, 2019	4,030	227,697,257
Ending balance at Sep. 30, 2019	$ 40	$ 2,276,973	$ 394,119,078	$ (300,273,828)	$ 96,122,263