Stock Based Compensation - Schedule of Stock-based Payment Award, Stock Options, Valuation Assumptions (Details) - $ / shares |
12 Months Ended | |
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Dec. 31, 2020 |
Dec. 31, 2019 |
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| Expected life (years) | 5 years | 5 years |
| Risk-free interest | 0.38% | 1.62% |
| Expected volatility | 89.76% | 73.20% |
| Total grant date fair value | $ 3.45 | |
| Minimum [Member] | ||
| Total grant date fair value | $ 1.83 | |
| Maximum [Member] | ||
| Total grant date fair value | $ 2.81 | |
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- Definition Weighted average fair value as of the grant date of equity-based award plans other than stock (unit) option plans that were not exercised or put into effect as a result of the occurrence of a terminating event. 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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