SHARE-BASED COMPENSATION (Details) - Schedule of share-based payment award, stock options, valuation assumptions |
6 Months Ended | 12 Months Ended | ||
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Jun. 30, 2021 |
Dec. 31, 2020 |
Dec. 18, 2020 |
Dec. 31, 2019 |
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SHARE-BASED COMPENSATION (Details) - Schedule of share-based payment award, stock options, valuation assumptions [Line Items] | ||||
Risk-free interest rate | 0.76% | 0.43% | 0.45% | |
Expected dividend yield | 0.00% | 0.00% | ||
Expected volatility | 60.00% | 60.00% | 50.00% | 80.00% |
Minimum [Member] | ||||
SHARE-BASED COMPENSATION (Details) - Schedule of share-based payment award, stock options, valuation assumptions [Line Items] | ||||
Expected term | 1 month 20 days | 2 years 9 months 14 days | ||
Risk-free interest rate | 0.22% | 1.30% | ||
Expected volatility | 85.00% | |||
Maximum [Member] | ||||
SHARE-BASED COMPENSATION (Details) - Schedule of share-based payment award, stock options, valuation assumptions [Line Items] | ||||
Expected term | 5 years | 5 years | ||
Risk-free interest rate | 0.41% | 2.70% | ||
Expected volatility | 90.00% |
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- References 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://fasb.org/us-gaap/role/ref/legacyRef
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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://fasb.org/us-gaap/role/ref/legacyRef
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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 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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