Organization and basis of presentation - Additional Information (Detail) - USD ($) |
1 Months Ended | 3 Months Ended | 9 Months Ended | |||
|---|---|---|---|---|---|---|
May 31, 2025 |
May 31, 2024 |
May 31, 2023 |
Sep. 30, 2026 |
Sep. 30, 2026 |
Dec. 31, 2025 |
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| Organization, Consolidation and Presentation of Financial Statements [Line Items] | ||||||
| Cash and cash equivalents | $ 31,094,000 | $ 31,094,000 | $ 18,303,000 | |||
| Accumulated deficit | 688,605,000 | 688,605,000 | $ 642,201,000 | |||
| Amoytop | Amoytop License and Research Collaboration | ||||||
| Organization, Consolidation and Presentation of Financial Statements [Line Items] | ||||||
| Upfront payment received | $ 1,000,000 | $ 1,500,000 | $ 7,000,000 | $ 39,000 | $ 27,800,000 | |
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- Definition Organization, consolidation and presentation of financial statements. No definition available.
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- Definition Upfront payment received. No definition available.
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- Definition Amount of cash and cash equivalent. Cash includes, but is not limited to, currency on hand, demand deposit with financial institution, and account with general characteristic of demand deposit. Cash equivalent includes, but is not limited to, short-term, highly liquid investment that is both readily convertible to known amount of cash and so near maturity that it presents insignificant risk of change in value because of change in interest rate. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- Definition Amount of accumulated undistributed earnings (deficit). Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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