SHARE-BASED COMPENSATION - Weighted-average key assumptions (Details) |
12 Months Ended |
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Dec. 31, 2022
$ / shares
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| SHARE-BASED COMPENSATION | |
| Expected volatility | 86.18% |
| Weighted average expected volatility | 85.45% |
| Expected dividend yield | 0.00% |
| Weighted average grant date fair value | $ 2.67 |
| Minimum | |
| SHARE-BASED COMPENSATION | |
| Risk-free interest rate | 2.89% |
| Expected volatility | 80.25% |
| Expected term (years) | 5 years 7 months 6 days |
| Maximum | |
| SHARE-BASED COMPENSATION | |
| Risk-free interest rate | 4.20% |
| Expected term (years) | 6 years 4 months 6 days |
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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 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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