Condensed Consolidated Statements of Operations and Comprehensive Loss - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2024	Sep. 30, 2023	Sep. 30, 2024	Sep. 30, 2023
Total revenue	$ 7,212	$ 5,959	$ 18,744	$ 18,028
Operating expenses
Selling, general and administrative	7,186	11,221	25,698	34,204
Research and development	9,997	11,890	36,683	36,161
Restructuring charges	2,638	0	2,638	0
Cost of goods sold	804	697	2,234	1,882
Total operating expenses	20,625	23,808	67,253	72,247
Loss from operations	(13,413)	(17,849)	(48,509)	(54,219)
Other income (expense)
Foreign exchange loss	(1)	0	(4)	(3)
Interest income	906	1,605	3,249	4,900
Interest expense	(38)	(58)	(154)	(174)
Total other income (expense), net	867	1,547	3,091	4,723
Net loss	(12,546)	(16,302)	(45,418)	(49,496)
Other comprehensive loss:
Unrealized gain on available-for-sale debt securities	66	28	12	99
Comprehensive loss	$ (12,480)	$ (16,274)	$ (45,406)	$ (49,397)
Net loss per share, basic (in dollars per share)	$ (0.46)	$ (0.60)	$ (1.68)	$ (1.84)
Net loss per share, diluted (in dollars per share)	$ (0.46)	$ (0.60)	$ (1.68)	$ (1.84)
Weighted-average number of common shares outstanding, basic (in shares)	27,041,327	26,946,683	27,010,791	26,901,810
Weighted-average number of common shares outstanding, diluted (in shares)	27,041,327	26,946,683	27,010,791	26,901,810
Product sales, net
Total revenue	$ 7,212	$ 5,959	$ 18,744	$ 18,028