Consolidated Statements of Operations and Comprehensive Income (Loss) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Consolidated Statements of Operations and Comprehensive Income (Loss)
Collaboration revenue	$ 250,008	$ 40,907	$ 37,415
Operating expenses:
Research and development	92,172	60,764	73,787
General and administrative	35,822	30,980	37,246
Total operating expenses	127,994	91,744	111,033
Operating income (loss)	122,014	(50,837)	(73,618)
Other income, net:
Interest income (expense)	11,721	1,792	(390)
Other income	3	2,653	2,811
Total other income, net	11,724	4,445	2,421
Income (loss) before income taxes	133,738	(46,392)	(71,197)
Income tax provision	1,408	16
Net income (loss)	132,330	(46,408)	(71,197)
Other comprehensive income (loss)
Net unrealized gain (loss) on available-for-sale-securities	171	(81)	(4)
Total other comprehensive income (loss)	171	(81)	(4)
Comprehensive income (loss)	$ 132,501	$ (46,489)	$ (71,201)
Net income (loss) per share, basic	$ 3.08	$ (1.21)	$ (1.89)
Net income (loss) per share, diluted	$ 2.97	$ (1.21)	$ (1.89)
Weighted-average common shares outstanding, basic	43,020,747	38,356,810	37,668,947
Weighted-average common shares outstanding, diluted	44,569,334	38,356,810	37,668,947