Intangible Assets - Schedule of Finite-Lived Intangible Assets (Detail) - USD ($) $ in Thousands |
Jun. 30, 2026 |
Dec. 31, 2025 |
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|---|---|---|---|---|
| Intangible Asset, Goodwill and Other [Abstract] | ||||
| Capitalized milestone payments | [1] | $ 15,360 | $ 15,360 | |
| Less accumulated amortization | (1,460) | (908) | ||
| Total | $ 13,900 | $ 14,452 | ||
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