Share-based compensation - Schedule of Option Activity (Details) - USD ($) $ / shares in Units, $ in Thousands |
6 Months Ended | 9 Months Ended | |
|---|---|---|---|
Jun. 30, 2026 |
Sep. 30, 2025 |
Dec. 31, 2025 |
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| Weighted average strike price per share (in $ per share) | |||
| Beginning balance (in dollars per share) | $ 8.40 | ||
| Granted (in dollars per share) | 3.96 | ||
| Forfeited (in dollars per share) | 3.17 | ||
| Expired (in dollars per share) | 16.69 | ||
| Exercised (in dollars per share) | 2.01 | ||
| Ending balance (in dollars per share) | $ 8.07 | ||
| Number of awards | |||
| Beginning balance (in shares) | 10,414,305 | ||
| Granted (in shares) | 515,400 | ||
| Forfeited (in shares) | (294,954) | ||
| Expired (in shares) | (455,971) | ||
| Exercised (in shares) | (187,379) | ||
| Ending balance (in shares) | 9,991,401 | ||
| Additional Disclosures | |||
| Weighted average remaining life in years | 6 years 4 months 28 days | 6 years 9 months 7 days | |
| Aggregate Intrinsic Value, Outstanding | $ 109 | $ 5,025 | |
| Aggregate Intrinsic Value, Exercisable | $ 70 |
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- References No definition available.
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- Definition Number of options or other stock instruments for which the right to exercise has lapsed under the terms of the plan agreements. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- Definition The number of shares under options that were cancelled during the reporting period as a result of occurrence of a terminating event specified in contractual agreements pertaining to the stock option plan. Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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- Definition Gross number of share options (or share units) granted during the period. Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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- Definition Amount by which the current fair value of the underlying stock exceeds the exercise price of options outstanding. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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- Definition Number of options outstanding, including both vested and non-vested options. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- Definition A roll forward is a reconciliation of a concept from the beginning of a period to the end of a period. No definition available.
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- Definition Weighted average price at which grantees can acquire the shares reserved for issuance under the stock option plan. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- References No definition available.
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- Definition Weighted average price at which option holders acquired shares when converting their stock options into shares. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- Definition Weighted average price at which grantees could have acquired the underlying shares with respect to stock options of the plan that expired. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- Definition Weighted average price at which grantees could have acquired the underlying shares with respect to stock options that were terminated. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- Definition Weighted average per share amount at which grantees can acquire shares of common stock by exercise of options. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- Definition Amount of difference between fair value of the underlying shares reserved for issuance and exercise price of vested portions of options outstanding and currently exercisable. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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- Definition Weighted-average contractual term remaining for option award outstanding, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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- Definition Number of share options (or share units) exercised during the current period. Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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