Condensed Consolidated Statements of Operations and Comprehensive Loss (Unaudited) - USD ($)	3 Months Ended		9 Months Ended
	Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2023	Sep. 30, 2022
Revenues:
Total revenues	$ 1,597,000	$ 1,570,000	$ 4,160,000	$ 6,674,000
Operating expenses (income):
Cost of revenues	1,102,000	1,128,000	2,630,000	5,201,000
Research and development	305,000	255,000	1,055,000	1,009,000
Gain on sale of Verdeca	0	0	0	(1,138,000)
Change in fair value of contingent consideration	0	0	0	(70,000)
Gain on sale of property and equipment	(11,000)	0	(36,000)	(386,000)
Selling, general and administrative	3,443,000	4,178,000	11,085,000	11,407,000
Total operating expenses	4,839,000	5,561,000	14,734,000	16,023,000
Loss from continuing operations	(3,242,000)	(3,991,000)	(10,574,000)	(9,349,000)
Interest income	133,000	95,000	538,000	123,000
Other income, net	17,000	43,000	36,000	13,000
Valuation loss on March 2023 PIPE	0	0	(6,076,000)	0
Change in fair value of common stock warrant and option liabilities	608,000	1,880,000	5,965,000	1,880,000
Issuance and offering costs allocated to liability classified options	0	(314,000)	(430,000)	(314,000)
Net loss from continuing operations before income taxes	(2,484,000)	(2,287,000)	(10,541,000)	(7,647,000)
Income tax provision	0	(1,000)	(1,000)	(1,000)
Net loss from continuing operations	(2,484,000)	(2,288,000)	(10,542,000)	(7,648,000)
Net loss from discontinued operations	(83,000)	(589,000)	(591,000)	(3,636,000)
Net loss	(2,567,000)	(2,877,000)	(11,133,000)	(11,284,000)
Net loss attributable to non-controlling interest	0	(10,000)	(5,000)	(152,000)
Net loss attributable to common stockholders	$ (2,567,000)	$ (2,867,000)	$ (11,128,000)	$ (11,132,000)
Net loss per share attributable to common stockholders:
Basic net loss per share attributable to common stockholders from continuing operations	$ (1.83)	$ (3.71)	$ (8.81)	$ (13.05)
Diluted net loss per share attributable to common stockholders from continuing operations	(1.83)	(3.71)	(8.81)	(13.05)
Basic net loss per share attributable to common stockholders from discontinued operations	(0.06)	(0.96)	(0.49)	(6.33)
Diluted net loss per share attributable to common stockholders from discontinued operations	(0.06)	(0.96)	(0.49)	(6.33)
Net loss per basic share attributable to common stockholders	(1.89)	(4.67)	(9.31)	(19.37)
Net loss per diluted share attributable to common stockholders	$ (1.89)	$ (4.67)	$ (9.31)	$ (19.37)
Weighted-average number of shares used in per share calculations:
Weighted average shares - Basic	1,359,511	613,814	1,195,354	574,621
Weighted average shares - Diluted	1,359,511	613,814	1,195,354	574,621
Other comprehensive income, net of tax
Unrealized gains on available-for-sale securities	$ 66,000	$ 0	$ 87,000	$ 0
Other comprehensive income	66,000	0	87,000	0
Comprehensive income (loss) attributable to common stockholders	(2,501,000)	(2,867,000)	(11,041,000)	(11,132,000)
Product
Revenues:
Total revenues	1,597,000	1,543,000	4,150,000	5,685,000
Royalty
Revenues:
Total revenues	0	17,000	0	117,000
License
Revenues:
Total revenues	$ 0	$ 10,000	$ 10,000	$ 872,000