STOCK-BASED COMPENSATION STOCK-BASED COMPENSATION (Details) - $ / shares |
3 Months Ended | |
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Mar. 31, 2019 |
Mar. 31, 2018 |
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| Disclosure of Compensation Related Costs, Share-based Payments [Abstract] | ||
| Volatility (percent) | 113.90% | 90.50% |
| Risk-Free Interest Rate (percent) | 2.50% | 2.60% |
| Expected Term (in years) | 5 years 8 months 19 days | 5 years 4 months 13 days |
| Dividend Rate (percent) | 0.00% | 0.00% |
| Fair Value Per Share on Grant Date (in USD per share) | $ 4.03 | $ 0.30 |
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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 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 share-based compensation awards, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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