SHARE-BASED COMPENSATION - Fair Value Assumption for Stock Options (Details) - Options to purchase common stock - $ / shares |
6 Months Ended | |
---|---|---|
Jun. 30, 2022 |
Jun. 30, 2021 |
|
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] | ||
Expected term, in years | 5 years 9 months 21 days | 5 years 10 months 28 days |
Expected volatility | 88.00% | 125.30% |
Risk-free interest rate | 2.12% | 0.60% |
Expected dividend yield | 0.00% | 0.00% |
Weighted-average exercise price (in dollars per share) | $ 16.17 | $ 22.13 |
X | ||||||||||
- Definition Agreed-upon price for the exchange of the underlying asset relating to the share-based payment award. No definition available.
|
X | ||||||||||
- 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
|
X | ||||||||||
- 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
|
X | ||||||||||
- 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
|
X | ||||||||||
- 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.
|
X | ||||||||||
- 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
|
X | ||||||||||
- Details
|