CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS AND COMPREHENSIVE LOSS - USD ($) shares in Thousands, $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2023	Jun. 30, 2022	Jun. 30, 2023	Jun. 30, 2022
Revenue
Total revenue, net	$ 41,494	$ 28,191	$ 75,903	$ 49,816
Operating expenses
Cost of sales	1,563	1,599	1,984	1,855
Selling, general and administrative	47,081	51,532	97,205	96,729
Research and development	12,650	11,525	25,808	24,145
Other (income) expense, net	(3,630)	(476)	(3,340)	958
Total cost of sales and operating expenses	57,664	64,180	121,657	123,687
Loss from operations	(16,170)	(35,989)	(45,754)	(73,871)
Interest expense	(65)	0	(65)	0
Interest income	4,101	483	7,915	745
Net loss before income taxes	(12,134)	(35,506)	(37,904)	(73,126)
Income tax (benefit) expense	(642)	9	(206)	19
Net loss	(11,492)	(35,515)	(37,698)	(73,145)
Other comprehensive loss:
Unrealized (loss) gain on available-for-sale securities, net of tax of nil	(32)	(235)	41	(1,001)
Comprehensive loss	$ (11,524)	$ (35,750)	$ (37,657)	$ (74,146)
Basic loss per share (in usd per share)	$ (0.08)	$ (0.25)	$ (0.26)	$ (0.52)
Diluted loss per share (in usd per share)	$ (0.08)	$ (0.25)	$ (0.26)	$ (0.52)
Weighted-average common shares outstanding used in computation of basic loss per share (in shares)	142,777	141,726	142,904	141,734
Weighted-average common shares outstanding used in computation of diluted loss per share (in shares)	142,777	141,726	142,904	141,734
Product revenue, net
Revenue
Total revenue, net	$ 41,100	$ 28,148	$ 75,437	$ 49,640
License, royalty and collaboration revenue
Revenue
Total revenue, net	$ 394	$ 43	$ 466	$ 176