Related Party Transactions - Additional Information (Detail) ¥ in Millions |
3 Months Ended | 6 Months Ended | ||||
|---|---|---|---|---|---|---|
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Jun. 30, 2026
USD ($)
|
Jun. 30, 2026
CNY (¥)
|
Jun. 30, 2025
USD ($)
|
Jun. 30, 2026
USD ($)
|
Jun. 30, 2025
USD ($)
|
Dec. 31, 2025
USD ($)
|
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| Related Party Transaction [Line Items] | ||||||
| Research and development fees | $ 8,351,000 | $ 16,442,000 | ||||
| Related Party | ||||||
| Related Party Transaction [Line Items] | ||||||
| Research and development fees | $ 4,836,000 | $ 4,836,000 | ||||
| Related Party | GNI Group | ||||||
| Related Party Transaction [Line Items] | ||||||
| Research and development fees | 5,100,000 | 200,000 | 5,100,000 | 200,000 | ||
| Milestone payment | ¥ 33.1 | 4,900,000 | ||||
| Payments for service | 0 | $ 0 | 0 | $ 0 | ||
| Other Receivables | 200,000 | 200,000 | $ 200,000 | |||
| Related Party | F351 Agreement | GNI Group | ||||||
| Related Party Transaction [Line Items] | ||||||
| Due to related parties | $ 5,100,000 | $ 5,100,000 | $ 200,000 | |||
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- Definition Milestone payments. No definition available.
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- Definition Amount of liabilities classified as other. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- Definition Amount due from parties in nontrade transactions, classified as other. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- Definition Amount of transactions with related party during the financial reporting period. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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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. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- Definition Amount of expense for research and development. Includes, but is not limited to, cost for computer software product to be sold, leased, or otherwise marketed and writeoff of research and development assets acquired in transaction other than business combination or joint venture formation or both. Excludes write-down of intangible asset acquired in business combination or from joint venture formation or both, used in research and development activity. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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