Consolidated Balance Sheets (Unaudited) - USD ($) $ in Thousands	Sep. 30, 2022	Dec. 31, 2021
Current assets:
Cash and cash equivalents	$ 29,759	$ 32,093
Marketable securities	6,986	16,175
Funds receivable from New Jersey net operating loss		1,641
Prepaid expenses and other current assets	805	304
Assets held for sale	3,600
Total current assets	41,150	50,213
Property and equipment, net	118	4,047
Right of use asset, net	866	149
Patent and trademark rights, net	2,013	1,974
Other assets	2,138	1,316
Total assets	46,285	57,699
Current liabilities:
Accounts payable	957	198
Accrued expenses	1,767	438
Current portion of operating lease liability	171	37
Total current liabilities	2,895	673
Long-term liabilities:
Operating lease liability	695	112
Redeemable warrants		35
Commitments and contingencies (Notes 12, 13, and 14)
Stockholders’ equity:
Series B Convertible Preferred Stock, stated value $1,000 per share, 713 and 715 issued and outstanding, respectively	713	715
Common Stock, par value $0.001 per share, authorized 350,000,000 shares: 48,082,275, and 47,994,672, issued and outstanding, respectively	48	48
Additional paid-in capital	418,091	417,217
Accumulated deficit	(376,157)	(361,101)
Total stockholders’ equity	42,695	56,879
Total liabilities and stockholders’ equity	$ 46,285	$ 57,699