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Agenus Transaction (Details) $ in Thousands		3 Months Ended		6 Months Ended
	May 29, 2024 USD ($) $ / shares shares	Jun. 30, 2024 USD ($)	Jun. 30, 2023	Jun. 30, 2024 USD ($)	Jun. 30, 2023	Dec. 31, 2023 USD ($)
Asset Acquisition [Line Items]
Net carrying value		$ 81,648		$ 81,648		$ 62,291
Expected term (years)		4 years 8 months 12 days	4 years 9 months 18 days	4 years 8 months 12 days	5 years 3 months 18 days
Expected volatility (as a percent)		45.50%	49.40%	44.70%	52.60%
Risk-free interest rate (as a percent)		4.30%	3.90%	4.30%	4.10%
Agenus, Inc.
Asset Acquisition [Line Items]
Net carrying value	$ 75,000	$ 40,407		$ 40,407		$ 0
Royalties right to receive (as a percent)	18.75%
Maximum capital sourcing	$ 100,000
Maximum financing royalty asset	$ 200,000
Warrants term (in years)	5 years
Securities called by warrants (in shares) | shares	867,052
Exercise price (in USD per share) | $ / shares	$ 17.3
Agenus, Inc. | Expected Term
Asset Acquisition [Line Items]
Derivative liability, measurement input	4
Agenus, Inc. | Option Volatility
Asset Acquisition [Line Items]
Derivative liability, measurement input	0.84
Agenus, Inc. | Risk Free Interest Rate
Asset Acquisition [Line Items]
Derivative liability, measurement input	0.047
Agenus, Inc. | Share Price
Asset Acquisition [Line Items]
Derivative liability, measurement input | $ / shares	15.03
Agenus, Inc. | INCAGN2390
Asset Acquisition [Line Items]
Future milestones right to receive (as a percent)	31.875%
Agenus, Inc. | UGN-301
Asset Acquisition [Line Items]
Future milestones right to receive (as a percent)	31.875%
Agenus, Inc. | BMS-986442
Asset Acquisition [Line Items]
Future milestones right to receive (as a percent)	31.875%
Agenus, Inc. | INCAGN2385
Asset Acquisition [Line Items]
Future milestones right to receive (as a percent)	31.875%
Agenus, Inc. | AGEN2373
Asset Acquisition [Line Items]
Future milestones right to receive (as a percent)	31.875%
Agenus, Inc. | MK-4830
Asset Acquisition [Line Items]
Future milestones right to receive (as a percent)	31.875%
Agenus, Inc. | BOT/BAL
Asset Acquisition [Line Items]
Future royalties (as a percent)	2.625%
Agenus Partnered Program
Asset Acquisition [Line Items]
Additional maximum investment	$ 25,000

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