Statements of Comprehensive Income (Loss) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2023	Mar. 31, 2022
Revenue
Collaborations, milestones, and royalties	$ 18,962	$ 85,495
Operating expenses
Research and development	64,379	47,756
General and administrative	13,948	11,273
Total operating expenses	78,327	59,029
Loss from operations	(59,365)	26,466
Other income (expenses)
Interest income, net	2,892	653
Other expense, net	(1,392)	(96)
Loss on equity securities, net	(2,898)	(3,429)
Total other expense, net	(1,398)	(2,872)
Net income (loss)	(60,763)	23,594
Other comprehensive income (loss)
Net unrealized gain (loss) on marketable debt securities	3,327	(5,611)
Comprehensive income (loss)	$ (57,436)	$ 17,983
Net income (loss) per share attributable to common stockholders:
Basic net income (loss) per common share (in dollars per share)	$ (1.02)	$ 0.40
Diluted net income (loss) per common share (in dollars per share)	$ (1.02)	$ 0.39
Weighted average shares used to compute net income (loss) per share attributable to common stockholders:
Basic (in shares)	59,771,674	59,407,829
Diluted (in shares)	59,771,674	61,078,494