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Agenus Transaction (Details) $ in Thousands	May 29, 2024 USD ($) $ / shares shares	Sep. 30, 2024 USD ($) $ / shares	Dec. 31, 2023 USD ($)
Asset Acquisition [Line Items]
Net carrying value		$ 205,867	$ 62,291
Agenus, Inc.
Asset Acquisition [Line Items]
Net carrying value	$ 75,000	$ 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	3.7
Agenus, Inc. | Option Volatility
Asset Acquisition [Line Items]
Derivative liability, measurement input	0.84	0.99
Agenus, Inc. | Risk Free Interest Rate
Asset Acquisition [Line Items]
Derivative liability, measurement input	0.047	0.036
Agenus, Inc. | Share Price
Asset Acquisition [Line Items]
Derivative liability, measurement input | $ / shares	15.03	5.48
Agenus, Inc. | BMS-986442
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. | INCAGN2385
Asset Acquisition [Line Items]
Future milestones right to receive (as a percent)	31.875%
Agenus, Inc. | INCAGN2390
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. | UGN-301
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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