Share-Based Compensation - Weighted average assumptions for the options granted (Details) - Employee Stock Option - USD ($) |
3 Months Ended | 6 Months Ended | ||
|---|---|---|---|---|
Jun. 30, 2026 |
Jun. 30, 2025 |
Jun. 30, 2026 |
Jun. 30, 2025 |
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| Share-based compensation | ||||
| Exercise price | $ 1.29 | $ 1.75 | $ 1.79 | $ 1.97 |
| Share price (in dollars per share) | $ 1.29 | $ 1.75 | $ 1.79 | $ 1.97 |
| Volatility (as a percent) | 94.00% | 131.00% | 119.00% | 106.00% |
| Risk-free interest rate (as a percent) | 4.18% | 4.06% | 3.98% | 4.33% |
| Expected life (in years) | 5 years 5 months 15 days | 5 years 3 months 7 days | 5 years 11 months 4 days | 5 years 11 months 4 days |
| Dividend (as a percent) | 0.00% | 0.00% | 0.00% | 0.00% |
| Original grant-date fair value | $ 5,200,000 | $ 2,700,000 | ||
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- Definition Grant date fair value of options under share-based payment arrangement. No definition available.
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- Definition Weighted-average fair value price paid per share during the reporting period for shares purchased on open market for issuance under share-based payment arrangement. No definition available.
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- Definition It represents information pertaining to fair value of exercise price No definition available.
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- Definition The estimated dividend rate (a percentage of the share price) to be paid (expected dividends) to holders of the underlying shares over the option's term. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- Definition The estimated measure of the percentage by which a share price is expected to fluctuate during a period. Volatility also may be defined as a probability-weighted measure of the dispersion of returns about the mean. The volatility of a share price is the standard deviation of the continuously compounded rates of return on the share over a specified period. That is the same as the standard deviation of the differences in the natural logarithms of the stock prices plus dividends, if any, over the period. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- Definition The risk-free interest rate assumption that is used in valuing an option on its own shares. 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 Expected term of award under share-based payment arrangement, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- Details
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