Condensed Consolidated Balance Sheets (Unaudited) - USD ($)	Mar. 31, 2023	Dec. 31, 2022
Current assets:
Cash and cash equivalents	$ 13,297,000	$ 12,383,000
Accounts Receivable	250,000	0
Prepaid expenses and other current assets	762,000	2,350,000
Total current assets	14,309,000	14,733,000
Restricted cash	26,000	26,000
Property and equipment, net	9,000	10,000
Right-of-use asset	275,000	300,000
Other noncurrent assets	643,000	694,000
Total assets	15,262,000	15,763,000
Current liabilities:
Accounts payable	706,000	1,759,000
Accrued liabilities	309,000	574,000
Accrued compensation and benefits	191,000	486,000
Current portion of lease liability	109,000	105,000
Debt	0	88,000
Total current liabilities	1,315,000	3,012,000
Warrant liability	18,000	61,000
Lease liability, net of current portion	182,000	211,000
Total liabilities	1,515,000	3,284,000
Commitments and contingencies (Note11)
Stockholders' equity:
Common stock, $0.01 par value; 280,000,000 shares authorized; 4,563,977 and 2,944,306 shares issued and outstanding at March 31, 2023 and December 31, 2022, respectively	46,000	30,000
Additional paid-in capital	125,229,000	121,637,000
Accumulated deficit	(111,530,000)	(109,190,000)
Total stockholders' equity	13,747,000	12,479,000
Total liabilities and stockholders' equity	15,262,000	15,763,000
Series A Preferred Stock [Member]
Stockholders' equity:
Series A convertible Preferred Stock, $0.01 par value, 7,000,000 shares authorized; 200,000 issued and outstanding at March 31, 2023 and December 31, 2022	$ 2,000	$ 2,000