CONDENSED STATEMENTS OF OPERATIONS AND COMPREHENSIVE LOSS - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2023	Mar. 31, 2022
Revenues:
Total revenues	$ 11,369	$ 468
Operating expenses:
Cost of revenue	1,537	85
Research and development	9,093	8,851
Selling, general and administrative	26,803	19,339
Total operating expenses	37,433	28,275
Loss from operations	(26,064)	(27,807)
Interest expense	(1,028)	(746)
Non-cash interest expense related to the sale of future royalties	(969)	0
Other income, net	1,302	484
Loss before provision for income taxes	(26,759)	(28,069)
Provision for income taxes	14	2
Net loss	$ (26,773)	$ (28,071)
Net loss per common stock - basic (in dollars per share)	$ (0.13)	$ (0.21)
Net loss per common stock - diluted (in dollars per share)	$ (0.13)	$ (0.21)
Shares used in computing net loss per share - basic (in shares)	207,023,127	130,934,795
Shares used in computing net loss per share - diluted (in shares)	207,023,127	130,934,795
Comprehensive loss:
Net loss	$ (26,773)	$ (28,071)
Unrealized gains (losses) on available-for-sale securities	34	(82)
Comprehensive loss	(26,739)	(28,153)
Product sales, net
Revenues:
Total revenues	11,355	450
Product supply revenue
Revenues:
Total revenues	2	14
Licensing revenue
Revenues:
Total revenues	$ 12	$ 4