SHARE-BASED COMPENSATION - Option pricing model (Details) |
12 Months Ended |
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Dec. 31, 2021
$ / shares
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| SHARE-BASED COMPENSATION | |
| Expected term | 6 years 2 months 12 days |
| Volatility | 93.00% |
| Risk-free interest rate | 1.09% |
| Weighted average grant date fair value | $ 4.72 |
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- References No definition available.
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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://fasb.org/us-gaap/role/ref/legacyRef
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- Definition Rate of weighted-average expected volatility for award under share-based payment arrangement. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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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://fasb.org/us-gaap/role/ref/legacyRef
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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://fasb.org/us-gaap/role/ref/legacyRef
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