Royalty Monetization Liabilities - Schedule of Changes in Royalty Monetization Liability (Detail) - USD ($) $ in Thousands	6 Months Ended
Jun. 30, 2026	Dec. 31, 2025
Royalty Monetization Liabilities [Line Items]
Beginning balance	$ 187,017
Ending balance	181,511
Current portion	(26,765)	$ (39,609)
Non-current portion	154,746	$ 147,408
2020 Royalty Purchase Agreement
Royalty Monetization Liabilities [Line Items]
Beginning balance	29,672
Ending balance	11,807
2020 Royalty Purchase Agreement \| HCR [Member]
Royalty Monetization Liabilities [Line Items]
Beginning balance	29,672
Novartis royalties paid to HCR	(21,943)
Interest expense recognized	4,078
Ending balance	11,807
Current portion	(11,807)
Non-current portion	0
2025 Royalty Bond
Royalty Monetization Liabilities [Line Items]
Beginning balance	157,345
Ending balance	169,704
2025 Royalty Bond \| HCR [Member]
Royalty Monetization Liabilities [Line Items]
Beginning balance	157,345
Unpaid interest accrued to principal	11,642
Amortization of debt discount and issuance costs	717
Ending balance	169,704
Current portion	(14,958)
Non-current portion	$ 154,746

Liability related to interest expense recognized.

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- Definition

Royalty monetization liabilities.

+ References

No definition available.

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- Definition

Royalty monetization liabilities current.

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- Definition

Royalty monetization liabilities.

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- Definition

Royalty monetization liabilities noncurrent.

+ References

No definition available.

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- Definition

Amount of amortization expense attributable to debt discount (premium) and debt issuance costs.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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- Definition

Increase for accrued, but unpaid interest on the debt instrument for the period.

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Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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- Definition

The amount of cash paid for royalties during the current period.

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