CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS AND COMPREHENSIVE LOSS (Unaudited) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2024	Jun. 30, 2023	Jun. 30, 2024	Jun. 30, 2023
Revenue, net	$ 8,314	$ 8,763	$ 15,361	$ 17,441
Cost of sales	5,198	9,248	10,244	15,948
Gross profit (loss)	3,116	(485)	5,117	1,493
Operating expenses:
Selling and marketing	4,072	7,693	9,216	15,674
General and administrative	4,163	6,416	9,080	12,549
Research and development	1,568	2,764	3,757	5,691
Total operating expenses	9,803	16,873	22,053	33,914
Operation loss	(6,687)	(17,358)	(16,936)	(32,421)
Interest and financing costs, net	(759)	(739)	(2,699)	(1,318)
Loss before income tax expense	(7,446)	(18,097)	(19,635)	(33,739)
Loss from continuing operations, net of tax	(7,446)	(18,097)	(19,635)	(33,739)
Income from discontinued operations, net of tax	81	407	5,508	678
Net loss	(7,365)	(17,690)	(14,127)	(33,061)
Other comprehensive income (net of tax):
Unrealized (loss) gain on short-term investments	(1)	(25)	(13)	31
Comprehensive loss	$ (7,366)	$ (17,715)	$ (14,140)	$ (33,030)
Net loss per share from continuing operations - basic	$ (0.08)	$ (0.19)	$ (0.21)	$ (0.36)
Net loss per share from continuing operations - diluted	(0.08)	(0.19)	(0.21)	(0.36)
Net income per share from discontinued operations - basic			0.06	0.01
Net income per share from discontinued operations - diluted			0.06	0.01
Net loss per share - basic	(0.08)	(0.19)	(0.15)	(0.35)
Net loss per share - diluted	$ (0.08)	$ (0.19)	$ (0.15)	$ (0.35)
Weighted-average shares outstanding - basic	95,429,233	93,684,289	95,085,847	93,538,676
Weighted-average shares outstanding - diluted	95,429,233	93,684,289	95,085,847	93,538,676