CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2023	Sep. 30, 2022
Operating expenses
Cost of product revenue	$ 514	$ 613	$ 1,350	$ 1,524
Research and development	6,081	5,940	15,133	13,336
Sales and marketing	1,472	2,109	4,929	7,089
General and administrative	3,533	4,384	12,783	14,876
Total operating expenses	11,600	13,046	34,195	36,825
Loss from operations	(8,787)	(9,896)	(26,734)	(28,129)
Gain (loss) on extinguishment of debt	3,697		3,697	(2,187)
Interest expense	(500)	(2,731)	(6,134)	(10,089)
Change in fair value of financial instruments and hybrid instrument designated at Fair Value Option	(2,244)	176	(3,365)	652
Other expense	(70)	(158)	(56)	(410)
Loss before income tax	(7,904)	(12,609)	(32,592)	(40,163)
Income tax expense
Net loss	(7,904)	(12,609)	(32,592)	(40,163)
Net loss attributable to noncontrolling interest	(126)	(89)	(462)	(290)
Net loss attributable to common stockholders	$ (7,778)	$ (12,520)	$ (32,130)	$ (39,873)
Net loss per share, basic	$ (0.38)	$ (8.83)	$ (2.21)	$ (36.62)
Net loss per share, diluted	$ (0.38)	$ (8.83)	$ (2.21)	$ (36.62)
Weighted-average common stock outstanding, basic	20,739,459	1,418,159	14,550,780	1,088,758
Weighted-average common stock outstanding, diluted	20,739,459	1,418,159	14,550,780	1,088,758
Product revenue
Revenue
Total revenue	$ 2,813	$ 3,150	$ 7,461	$ 8,696