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License and Collaboration Agreements - Additional Information (Details) - USD ($) $ in Thousands			1 Months Ended		3 Months Ended			12 Months Ended
	Jan. 01, 2024	Sep. 30, 2022	Mar. 31, 2023	Jul. 31, 2020	Mar. 31, 2024	Sep. 30, 2023	Mar. 31, 2023	Dec. 31, 2023	Dec. 31, 2020
Preferred stock, shares issued (in shares)					0			0
Acquired IPR&D expense		$ 3,000
Quarterly fee	$ 600				$ 1,300
Delivery fee					200
Completion fee					200
Exercise fee					$ 1,000
Accrued Upfront Fee									$ 200
Royalty Based on Net Sales of Licensed Products, Percentage					1.00%
Royalty expense					$ 0
Research and Development [Member]
Quarterly fee					600		$ 1,300
Research Development And Regulatory Milestone
Potential milestone payment					18,000
Adimab Assignment Agreement [Member]
Milestone payment					$ 11,100			$ 11,100
Adimab Assignment Agreement [Member] | Maximum [Member]
Potential milestone payment				$ 24,600
Royalty percentage of sublicense consideration					55.00%
Adimab Assignment Agreement [Member] | Minimum [Member]
Royalty percentage of sublicense consideration					45.00%
Adimab Assignment Agreement [Member] | Research and Development [Member]
Recognized expense					$ 0		0
Adimab Assignment Agreement [Member] | Acquired In Process Research And Development Expense [Member]
Milestone payment			$ 400		0	$ 3,200	400
Adimab Assignment Agreement [Member] | First Product [Member]
Potential milestone payment				16,500
Adimab Assignment Agreement [Member] | Second Product [Member]
Potential milestone payment				$ 8,100
Adimab Collaboration Agreement [Member]
Expenses					0		200
Adimab Collaboration Agreement [Member] | Research and Development [Member]
Quarterly fee					600		1,300
Adimab Collaboration Agreement [Member] | Acquired In Process Research And Development Expense [Member]
Exercise fee					0		0
Adimab Platform Transfer Agreement [Member] | Research Development And Regulatory Milestone
Potential milestone payment					9,500
Cell Line License Agreement [Member]
Acquired IPR&D expense					$ 0		$ 400

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