CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS AND COMPREHENSIVE LOSS (Unaudited) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2024	Sep. 30, 2023	Sep. 30, 2024	Sep. 30, 2023
Revenue, net	$ 8,036	$ 8,163	$ 23,397	$ 25,604
Cost of sales	4,726	7,279	14,970	23,227
Gross profit	3,310	884	8,427	2,377
Operating expenses:
Selling and marketing	3,642	6,954	12,858	22,628
General and administrative	4,872	7,708	13,952	20,257
Research and development	1,588	2,787	5,345	8,478
Total operating expenses	10,102	17,449	32,155	51,363
Operation loss	(6,792)	(16,565)	(23,728)	(48,986)
Interest and other expense:
Interest expense	(1,010)	(1,649)	(4,608)	(4,778)
Other income	266	765	1,165	2,576
Total interest and other expense	(744)	(884)	(3,443)	(2,202)
Loss before income tax expense	(7,536)	(17,449)	(27,171)	(51,188)
Loss from continuing operations, net of tax	(7,536)	(17,449)	(27,171)	(51,188)
Income from discontinued operations, net of tax		469	5,508	1,147
Net loss	(7,536)	(16,980)	(21,663)	(50,041)
Other comprehensive income (net of tax):
Unrealized (loss) gain on short-term investments	5	24	(8)	55
Comprehensive loss	$ (7,531)	$ (16,956)	$ (21,671)	$ (49,986)
Net loss per share from continuing operations - basic	$ (15.77)	$ (37.01)	$ (57.18)	$ (108.93)
Net loss per share from continuing operations - diluted	(15.77)	(37.01)	(57.18)	(108.93)
Net income per share from discontinued operations - basic		0.99	11.59	2.44
Net income per share from discontinued operations - diluted		0.99	11.59	2.44
Net loss per share - basic	(15.77)	(36.02)	(45.59)	(106.49)
Net loss per share - diluted	$ (15.77)	$ (36.02)	$ (45.59)	$ (106.49)
Weighted-average shares outstanding - basic	477,857	471,427	475,188	469,934
Weighted-average shares outstanding - diluted	477,857	471,427	475,188	469,934