Condensed Consolidated Statements of Operations and Comprehensive Loss (Unaudited) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2024	Mar. 31, 2023
Revenues:
Total revenues	$ 1,255	$ 1,232
Operating expenses (income):
Cost of revenues	820	688
Research and development	272	359
Loss (Gain) on sale of property and equipment	2	(19)
Impairment of property and equipment	36	0
Selling, general and administrative	3,189	4,071
Total operating expenses	4,319	5,099
Loss from continuing operations	(3,064)	(3,867)
Interest income	45	198
Other income, net	3	32
Valuation loss on March 2023 PIPE	0	(6,076)
Change in fair value of common stock warrant and option liabilities	593	940
Issuance and offering costs allocated to liability classified options	0	(430)
Net loss from continuing operations	(2,423)	(9,203)
Net loss from discontinued operations	0	(181)
Net loss attributable to common stockholders	$ (2,423)	$ (9,384)
Net loss per share attributable to common stockholders:
Basic net loss per share attributable to common stockholders from continuing operations	$ (1.78)	$ (10.65)
Diluted net loss per share attributable to common stockholders from continuing operations	(1.78)	(10.65)
Basic net loss per share attributable to common stockholders from discontinued operations	0	(0.21)
Diluted net loss per share attributable to common stockholders from discontinued operations	0	(0.21)
Net loss per basic share attributable to common stockholders	(1.78)	(10.86)
Net loss per diluted share attributable to common stockholders	$ (1.78)	$ (10.86)
Weighted-average number of shares used in per share calculations:
Weighted average shares - Basic	1,361,657	864,391
Weighted average shares - Diluted	1,361,657	864,391
Other comprehensive income, net of tax
Unrealized gains on available-for-sale securities	$ 60	$ 0
Other comprehensive income	60	0
Comprehensive loss attributable to common stockholders	(2,363)	(9,384)
Product
Revenues:
Total revenues	$ 1,255	$ 1,232