Condensed Consolidated Statements of Operations and Comprehensive Loss (Unaudited) - USD ($) shares in Thousands, $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2024	Jun. 30, 2023	Jun. 30, 2024	Jun. 30, 2023
Total revenues	$ 513	$ 809	$ 1,634	$ 939
Costs and expenses:
Cost of sales	852	768	1,856	790
General and administrative	6,305	5,320	11,035	9,251
Depreciation	305	305	600	634
Total costs and expenses	7,462	6,393	13,491	10,675
Operating loss	(6,949)	(5,584)	(11,857)	(9,736)
Interest expense, net	(1,921)	(1,128)	(3,860)	(2,464)
Loss on derivative liability	0	(350)	0	(220)
Loss before income taxes	(8,870)	(7,062)	(15,717)	(17,751)
Income tax expense	(2)	(2)	(5)	(4)
Net loss and comprehensive loss	(8,872)	(7,064)	(15,722)	(17,755)
Less: Preferred stock dividend	(1,288)	(1,288)	(2,553)	(2,553)
Net loss and comprehensive loss applicable to common stock	$ (10,160)	$ (8,352)	$ (18,275)	$ (20,308)
Basic and diluted net loss per common share (in dollars per share)	$ (0.15)	$ (0.13)	$ (0.27)	$ (0.31)
Basic and diluted weighted average shares outstanding (in shares)	67,771	66,606	67,384	64,633
Total revenues	$ 513	$ 809	$ 1,634	$ 939
Loss on early extinguishment of debt			$ 0	$ (5,331)