SHARE-BASED COMPENSATION - Stock Options - Weighted-average key assumptions (Details) - $ / shares |
12 Months Ended | |
|---|---|---|
Dec. 31, 2023 |
Dec. 31, 2022 |
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| SHARE-BASED COMPENSATION | ||
| Weighted average expected volatility | 91.08% | |
| Expected dividend yield | 0.00% | |
| Weighted average grant date fair value | $ 1.27 | $ 2.67 |
| Minimum | ||
| SHARE-BASED COMPENSATION | ||
| Risk-free interest rate | 3.45% | |
| Expected volatility | 89.09% | |
| Expected term (years) | 5 years 4 months 13 days | |
| Maximum | ||
| SHARE-BASED COMPENSATION | ||
| Risk-free interest rate | 4.44% | |
| Expected volatility | 101.75% | |
| Expected term (years) | 6 years 3 months | |
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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/exampleRef
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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 Rate of weighted-average expected volatility for award under share-based payment arrangement. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- Definition The weighted average grant-date fair value of options granted during the reporting period as calculated by applying the disclosed option pricing methodology. 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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