Number of collaboration targets under the collaboration agreement.

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- Definition

Payment received from collaborative arrangement.

+ References

No definition available.

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- Definition

The amount of estimated variable consideration no longer constrained.

+ References

No definition available.

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- Definition

Maximum days allowed for cancellation of contracts prior written notice, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days.

+ References

No definition available.

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- Definition

Represents the number of material rights usually associated with an option.

+ References

No definition available.

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- Definition

Amount of allocated determined transaction price under revenue recognition arrangement.

+ References

No definition available.

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- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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- Definition

Amount of obligation to transfer good or service to customer for which consideration has been received or is receivable.

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Amount, excluding tax collected from customer, of revenue from satisfaction of performance obligation by transferring promised good or service to customer. Tax collected from customer is tax assessed by governmental authority that is both imposed on and concurrent with specific revenue-producing transaction, including, but not limited to, sales, use, value added and excise.

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Significant agreements - Novartis Collaboration Agreement (Details) $ in Thousands		1 Months Ended		12 Months Ended
	Mar. 27, 2023 USD ($) item	Nov. 30, 2025 USD ($)	Nov. 30, 2024 USD ($)	Dec. 31, 2025 USD ($)	Dec. 31, 2024 USD ($)	Dec. 31, 2023 USD ($)
Significant agreements.
Revenue from collaborative arrangement				$ 72,586	$ 35,275	$ 26,976
Deferred revenue				$ 38,469	101,658	135,194
Maximum Days Allowed for Cancellation of Contracts Prior Written Notice				90 days
Novartis
Significant agreements.
Number of collaboration targets \| item	2
Payment received	$ 50,000
Transaction price	$ 50,000		$ 53,000
Revenue from collaborative arrangement		$ 41,900		$ 46,985	8,161	1,909
Deferred revenue				$ 0	44,073	$ 50,008
Amount of estimate of variable consideration			$ 3,000
Novartis \| Two material rights associated with limited substitution rights
Significant agreements.
Number of material rights \| item	2
Novartis \| Two material rights associated with options to progress development candidates incorporating radionuclides
Significant agreements.
Number of material rights \| item	2
Novartis \| Two material rights associated with options to progress development candidates not incorporating radionuclides
Significant agreements.
Number of material rights \| item	2
Novartis \| Expiration of two material rights associated with limited substitution rights
Significant agreements.
Revenue from collaborative arrangement					$ 2,500