Consolidated Statements of Operations and Comprehensive Loss - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022
Total revenues	$ 2,065	$ 2,719
Cost of goods sold	(635)	(686)
Gross profit	1,430	2,033
Operating expenses:
Research and development expenses	17,502	18,583
Selling, general and administrative expenses	22,110	17,303
Total operating expenses	39,612	35,886
Operating loss	(38,182)	(33,853)
Change in fair value of warrant liability	(7,998)	0
Interest expense, net	(1,439)	(2,685)
Other income (expense)	(59)	30
Net loss	(47,678)	(36,508)
Comprehensive (loss) income:
Unrealized gain on investments	157	0
Foreign currency translation adjustments	61	101
Total comprehensive loss	$ (47,460)	$ (36,407)
Common share data:
Basic loss per common share (in dollars per share)	$ (2.94)	$ (4.12)
Diluted loss per common share (in dollars per share)	$ (2.94)	$ (4.12)
Weighted average number of basic shares outstanding (in shares)	16,229,931	8,864,615
Weighted average number of diluted shares outstanding (in shares)	16,229,931	8,864,615
Product revenue
Total revenues	$ 2,065	$ 2,548
Other revenue
Total revenues	$ 0	$ 171