Consolidated Statements of Cash Flows (Unaudited) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended		12 Months Ended
	Jun. 30, 2022	Jun. 30, 2021	Jun. 30, 2022	Jun. 30, 2021	Dec. 31, 2021
Cash flows from operating activities:
Net loss	$ (4,851)	$ (5,876)	$ (8,671)	$ (9,455)
Adjustments to reconcile net loss to net cash used in operating activities:
Depreciation of property and equipment			20	325
Redeemable warrants valuation adjustment			(34)	29
Extinguishment of financing obligation and note payable				2,701
Amortization of patent, trademark rights			38	80	$ 116
Changes in ROU assets			(740)	22
Gain on sale of property and equipment				(216)
Gain from sale of income tax operating losses			(422)	(469)
Equity-based compensation			517	1,006
(Loss) on sale of marketable securities			1,404	25
Amortization of finance and debt issuance costs				47
Change in assets and liabilities:
Accounts receivable				6
Funds Receivable from New Jersey net operating loss			1,641	1,090
Prepaid expenses and other current assets and other non-current assets			(69)	69
Lease liability			740	(22)
Other Assets			(73)
Accounts payable			514	68
Accrued expenses			64	(69)
Net cash used in operating activities			(5,071)	(4,763)
Cash flows from investing activities:
Proceeds from sale of marketable securities			8,713	1,613
Purchase of marketable securities			(1,262)	(2,096)
Purchase of property and equipment				(26)
Proceeds from sale of property and equipment				245
Purchase of patent and trademark rights			(76)	(365)
Net cash provided by (used in) investing activities			7,375	(629)
Cash flows from financing activities:
Payment of financial obligation				(4,732)
Financing obligation payments				(122)
Proceeds from sale of stock, net of issuance costs			55	12,887
Net cash provided by financing activities			55	8,033
Net (decrease) increase in cash and cash equivalents			2,359	2,641
Cash and cash equivalents at beginning of period			32,093	38,501	38,501
Cash and cash equivalents at end of period	$ 34,452	$ 41,142	34,452	41,142	$ 32,093
Supplemental disclosures of non-cash investing and financing cash flow information:
Operating lease-Right of Use Assets			761
Unrealized loss on marketable securities				(225)
Conversion of Series B preferred			$ 2	$ 7