Condensed Consolidated Statements of Operations - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2023	Jun. 30, 2022	Jun. 30, 2023	Jun. 30, 2022
Revenue:
Revenue	$ 16,074	$ 594	$ 23,877	$ 2,610
Costs and expenses:
Cost of product revenue	1,911	23	2,768	260
Research and development:
Noncash compensation	5,664	2,328	7,247	4,223
Other research and development	22,458	24,546	36,744	70,693
Total research and development	28,122	26,874	43,991	74,916
Selling, general and administrative:
Noncash compensation	6,877	(3,304)	12,117	(3,077)
Other selling, general and administrative	23,838	15,942	46,666	36,324
Total selling, general and administrative	30,715	12,638	58,783	33,247
Total costs and expenses	60,748	39,535	105,542	108,423
Operating loss	(44,674)	(38,941)	(81,665)	(105,813)
Other expense (income):
Interest expense	3,627	3,017	6,471	5,681
Other income	(691)	(1,448)	(1,295)	(1,971)
Total other expense (income), net	2,936	1,569	5,176	3,710
Net loss	$ (47,610)	$ (40,510)	$ (86,841)	$ (109,523)
Basic net loss per common share (in dollars per share)	$ (0.34)	$ (0.30)	$ (0.62)	$ (0.81)
Diluted net loss per common share (in dollars per share)	$ (0.34)	$ (0.30)	$ (0.62)	$ (0.81)
Weighted-average shares used in computing basic net loss per common share (in shares)	141,503,738	134,779,904	140,911,295	134,591,250
Weighted-average shares used in computing diluted net loss per common share (in shares)	141,503,738	134,779,904	140,911,295	134,591,250
Product revenue, net [Member]
Revenue:
Revenue	$ 16,036	$ 556	$ 23,801	$ 2,534
License revenue [Member]
Revenue:
Revenue	$ 38	$ 38	$ 76	$ 76