Basis of presentation and significant accounting policies - Summarizes the significant expense categories reviewed (Details) - USD ($) $ in Thousands |
3 Months Ended | 6 Months Ended | ||||
|---|---|---|---|---|---|---|
Jun. 30, 2025 |
Mar. 31, 2025 |
Jun. 30, 2024 |
Mar. 31, 2024 |
Jun. 30, 2025 |
Jun. 30, 2024 |
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| Segment Reporting Information [Line Items] | ||||||
| Stock-based compensation | $ 90 | $ 723 | $ 227 | $ 1,598 | ||
| Research and Development Expense, Total | 84 | 1,430 | 177 | 2,918 | ||
| General and Administrative Expense, Total | 1,051 | 2,779 | 2,921 | 5,868 | ||
| Other segment items | (60) | (145) | (431) | (341) | ||
| Net loss | 1,075 | $ 1,592 | 4,064 | $ 4,381 | 2,667 | 8,445 |
| Research and Development Expense [Member] | ||||||
| Segment Reporting Information [Line Items] | ||||||
| Personnel | (3) | 1,082 | 1 | 1,498 | ||
| Stock-based compensation | 3 | 207 | 18 | 462 | ||
| Program expenses | 25 | 15 | 51 | 511 | ||
| Other unallocated expenses | 59 | 126 | 107 | 447 | ||
| Research and Development Expense, Total | 84 | 1,430 | 177 | 2,918 | ||
| General and Administrative Expense [Member] | ||||||
| Segment Reporting Information [Line Items] | ||||||
| Personnel | 307 | 606 | 621 | 1,190 | ||
| Stock-based compensation | 87 | 516 | 209 | 1,136 | ||
| Professional fees | 352 | 1,064 | 1,503 | 2,371 | ||
| Other general and administrative | 305 | 593 | 588 | 1,171 | ||
| General and Administrative Expense, Total | $ 1,051 | $ 2,779 | $ 2,921 | $ 5,868 | ||
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- Definition Personnel Expenses No definition available.
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- Definition Program Expenses No definition available.
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- Definition Amount of expense for award under share-based payment arrangement. Excludes amount capitalized. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- Definition The aggregate total of expenses of managing and administering the affairs of an entity, including affiliates of the reporting entity, which are not directly or indirectly associated with the manufacture, sale or creation of a product or product line. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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- Definition The portion of profit or loss for the period, net of income taxes, which is attributable to the parent. Reference 1: http://www.xbrl.org/2003/role/exampleRef
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- Definition Amount of expense classified as other. Reference 1: http://www.xbrl.org/2003/role/exampleRef
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- Definition Amount of general and administrative expense classified as other. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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- Definition A fee charged for services from professionals such as doctors, lawyers and accountants. The term is often expanded to include other professions, for example, pharmacists charging to maintain a medicinal profile of a client or customer. Reference 1: http://www.xbrl.org/2003/role/exampleRef
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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/exampleRef
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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. No definition available.
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- Definition Amount of other expense (income) and loss (gain) calculated as difference between segment revenue and separately disclosed expense category to arrive at segment profit (loss). Reference 1: http://www.xbrl.org/2003/role/exampleRef
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