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v3.21.2

Warrant Liability (Details 2) - $ / shares | 6 Months Ended | 12 Months Ended
--- | --- | ---
Jun. 30, 2021 | Dec. 31, 2020 | Dec. 31, 2019 | Dec. 31, 2018 | Dec. 31, 2017 | Dec. 31, 2016
Expected life (years) |  | 3 years 10 months 24 days | 3 years 8 months 12 days |  | 3 years 8 months 12 days | 3 years 8 months 12 days
Expected volatility |  | 63.20% | 58.60% |  |  | 56.80%
Expected dividend rate |  | 0.00% | 0.00% | 0.00% | 0.00% | 0.00%
Sep-2018 Warrants [Member] |  |  |  |  |  |
Expected forfeiture rate | 0.00% |  |  |  |  |
Expected life (years) | 2 months 12 days |  |  |  |  |
Expected volatility | 72.30% |  |  |  |  |
Risk free rate | 0.40% |  |  |  |  |
Expected dividend rate | 0.00% |  |  |  |  |
Exercise price | $ 1.00 |  |  |  |  |
Market price | $ 1.41 |  |  |  |  |
Aug-2020 Warrants [Member] |  |  |  |  |  |
Expected forfeiture rate | 0.00% |  |  |  |  |
Expected life (years) | 1 year 1 month 6 days |  |  |  |  |
Expected volatility | 78.10% |  |  |  |  |
Risk free rate | 0.40% |  |  |  |  |
Expected dividend rate | 0.00% |  |  |  |  |
Exercise price | $ 0.75 |  |  |  |  |
Market price | $ 1.41 |  |  |  |  |
Feb-2021 Warrant [Member] |  |  |  |  |  |
Expected forfeiture rate | 0.00% |  |  |  |  |
Expected life (years) | 2 years 7 months 6 days |  |  |  |  |
Expected volatility | 75.60% |  |  |  |  |
Risk free rate | 0.60% |  |  |  |  |
Expected dividend rate | 0.00% |  |  |  |  |
Exercise price | $ 1.35 |  |  |  |  |
Market price | $ 1.41 |  |  |  |  |

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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. + References No definition available. + Details
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- References No definition available. + Details
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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. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (f)(2)(iii) -URI http://asc.fasb.org/extlink&oid=120381028&loc=d3e5070-113901 + Details
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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. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (f)(2)(ii) -URI http://asc.fasb.org/extlink&oid=120381028&loc=d3e5070-113901 + Details
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- Definition The maximum risk-free interest rate assumption that is used in valuing an option on its own shares. + References No definition available. + Details
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- Definition Weighted average price at which option holders acquired shares when converting their stock options into shares. + References No definition available. + Details
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