Stockholders' equity - Schedule of Outstanding Warrants (Details) - $ / shares |
Jun. 30, 2026 |
Dec. 31, 2025 |
|---|---|---|
| Class of Stock [Line Items] | ||
| Warrant outstanding (in shares) | 40,969,657 | 58,420,290 |
| Private Placement Offering Warrants | ||
| Class of Stock [Line Items] | ||
| Exercise price (in dollars per share) | $ 1.0680 | $ 1.068 |
| Exercise period | 5 years | 5 years |
| Warrant outstanding (in shares) | 36,808,240 | 46,816,480 |
| Number of securities called by each warrant (in shares) | 0.1 | 0.1 |
| 2025 3-Year Warrants | ||
| Class of Stock [Line Items] | ||
| Exercise price (in dollars per share) | $ 4.200 | $ 4.200 |
| Exercise period | 3 years | 3 years |
| Warrant outstanding (in shares) | 4,161,417 | 4,823,900 |
| 2025 2-Year Warrants | ||
| Class of Stock [Line Items] | ||
| Exercise price (in dollars per share) | $ 6.000 | $ 6.000 |
| Exercise period | 2 years | 2 years |
| Warrant outstanding (in shares) | 0 | 6,779,910 |
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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 Exercise price per share or per unit of warrants or rights outstanding. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- Definition Number of securities into which each warrant or right may be converted. For example, but not limited to, each warrant may be converted into two shares. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- Definition Number of warrants or rights outstanding. No definition available.
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- Definition Period between issuance and expiration of outstanding warrant and right embodying unconditional obligation requiring redemption by transferring asset at specified or determinable date or upon event certain to occur, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days. Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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