Condensed Consolidated Statements of Operations (Unaudited) - USD ($) shares in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2023	Jun. 30, 2022	Jun. 30, 2023	Jun. 30, 2022
Revenues
Product sales	$ 96,000	$ 5,000	$ 181,000	$ 14,000
Cost of revenues
Product sales	7,000	11,000	17,000	42,000
Service and other	0	55,000	0	119,000
Total cost of revenues	7,000	66,000	17,000	161,000
Gross profit (loss)	89,000	(61,000)	164,000	(147,000)
Operating expenses
Selling, general and administrative	1,415,000	2,476,000	11,648,000	4,778,000
Research and development	134,000	2,396,000	374,000	5,511,000
Restructuring and impairment	0	3,527,000	0	3,527,000
Loss on impairment of goodwill	4,848,000	0	60,934,000	0
Total operating expenses	6,397,000	8,399,000	72,956,000	13,816,000
Operating loss	(6,308,000)	(8,460,000)	(72,792,000)	(13,963,000)
Other income, net
Change in fair value of royalty payable	4,617	0	4,617	0
Interest income	119,000	0	188,000	0
Other (expense) income, net	4,000	12,000	11,000	20,000
Total other income, net	4,732,000	12,000	4,816,000	20,000
Loss from operations before income taxes	(1,576,000)	(8,448,000)	(67,976,000)	(13,943,000)
Income taxes	0	0	0	0
Net loss	(1,576,000)	(8,448,000)	(67,976,000)	(13,943,000)
Deemed dividends from the warrant inducement offer	0	0	(800,000)	0
Net loss attributable to common stockholders	$ (1,576,000)	$ (8,448,000)	$ (68,776,000)	$ (13,943,000)
Net loss per share attributable to common stockholders, basic and diluted	$ (0.29)	$ (13.07)	$ (16.97)	$ (0.03)
Weighted average common shares used in computing net loss per share, basic and diluted	5,364,383	646,361	4,052,700	525,924