Consolidated Balance Sheets - USD ($)	Dec. 31, 2021	Jun. 30, 2021
Current assets:
Cash and cash equivalents	$ 47,325,547	$ 60,104,919
Accounts receivable	583,991	1,580,443
Inventories	1,078,896	1,162,000
Prepaid expenses and other current assets	2,379,693	3,059,679
Total current assets	51,368,127	65,907,041
Property and equipment, net	511,316	94,817
Right-of-use assets	1,058,241	1,237,813
Other assets	56,916	56,916
Total assets	52,994,600	67,296,587
Current liabilities:
Accounts payable	160,180	640,650
Accrued expenses	6,178,200	5,797,378
Short-term operating lease liabilities	360,655	351,853
Short-term finance lease liabilities	96,924	0
Other current liabilities	7,068,033	3,721,907
Total current liabilities	13,863,992	10,511,788
Long-term operating lease liabilities	715,893	900,520
Long-term finance lease liabilities	204,908	0
Other long-term liabilities	3,013,500	6,232,907
Total liabilities	17,798,293	17,645,215
Stockholders' equity:
Preferred stock of $0.01 par value - authorized 10,000,000 shares; shares issued and outstanding designated as follows: Series A Convertible: authorized 264,000 shares: issued and outstanding 4,030 shares as of December 31, 2021 and June 30, 2021	40	40
Common stock of $0.01 par value - authorized 300,000,000 shares: issued and outstanding 231,695,273 shares as of December 31, 2021 and 230,049,691 shares as of June 30, 2021	2,316,953	2,300,497
Additional paid-in capital	400,473,806	399,146,232
Accumulated deficit	(367,594,492)	(351,795,397)
Total stockholders' equity	35,196,307	49,651,372
Total liabilities and stockholders' equity	$ 52,994,600	$ 67,296,587