Consolidated Statements Shareholders Equity - USD ($)	Preferred Stock	Common Stock	Additional Paid-In Capital	Accumulated Deficit	Total
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
Sale of common stock units, net of costs		$ 1,895,934
Sale of common stock units, net of costs, shares		18,959	1,562,539		1,581,498
Warrant exercises		$ 26,861
Warrant exercises, shares		269	(269)		0
Stock-based compensation		$ 614,117
Stock-based compensation, shares		6,141	3,132,323		3,138,464
Withholding taxes related to restricted stock units		$ (93,875)
Withholding taxes related to restricted stock units, shares		(939)	(121,929)		(122,868)
Warrant repurchases			$ (2,547,466)		$ (2,547,466)
Net loss				(22,426,023)	(22,426,023)
Ending balance, shares at Jun. 30, 2020	4,030	229,258,400
Ending balance at Jun. 30, 2020	$ 40	$ 2,292,584	$ 396,079,127	(318,198,902)	$ 80,172,849
Warrant exercises, shares					0
Stock-based compensation		$ 958,090
Stock-based compensation, shares		9,581	3,159,075		3,168,656
Withholding taxes related to restricted stock units		$ (166,799)
Withholding taxes related to restricted stock units, shares		(1,668)	(91,970)		(93,638)
Warrant repurchases					$ 0
Net loss				(33,596,495)	(33,596,495)
Ending balance, shares at Jun. 30, 2021	4,030	230,049,691
Ending balance at Jun. 30, 2021	$ 40	$ 2,300,497	$ 399,146,232	$ (351,795,397)	$ 49,651,372