Condensed Consolidated Statements of Cash Flows (Unaudited) - USD ($)	3 Months Ended
	Mar. 31, 2022	Mar. 31, 2021
CASH FLOWS FROM OPERATING ACTIVITIES:
Net loss	$ (4,595,000)	$ (6,574,000)
Adjustments to reconcile net loss to net cash used in operating activities:
Depreciation	41,000	55,000
Debt related charges included in interest expense	0	176,000
Stock-based compensation	141,000	104,000
Changes in operating assets and liabilities:
Accounts receivable		149,000
Prepaid expenses and other current assets	(147,000)	(383,000)
Accounts payable	(472,000)	70,000
Accrued expenses	35,000	(711,000)
Net cash used in operating activities	(4,996,000)	(7,114,000)
CASH FLOWS FROM FINANCING ACTIVITIES:
Proceeds from issuance of common stock	3,519,000	31,863,000
Redemption of convertible debt		(5,956,000)
Payments of long-term debt	(19,000)
Proceeds from private offering of common stock	9,710,000
Net cash provided by financing activities	13,210,000	25,907,000
NET INCREASE IN CASH AND CASH EQUIVALENTS	8,214,000	18,793,000
CASH AND CASH EQUIVALENTS–Beginning of period	8,589,000	10,596,000
CASH AND CASH EQUIVALENTS–End of period	$ 16,803,000	$ 29,389,000