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Equity (Details 2) - $ / shares |  |  | 1 Months Ended
--- | --- | --- | ---
Mar. 15, 2021 | Feb. 11, 2021 | Oct. 31, 2021 | Oct. 20, 2021 | Mar. 31, 2021 | Feb. 28, 2021
Consolidated Balance Sheets |  |  |  |  |  |
Fair value options | 9,860 | 604,572 |  | 473,143 |  |
Options issued | 3,572 | 283,936 | 182,166 | 182,143 | 3,572 | 283,936
Exercise price | $ 5.60 | $ 5.60 | $ 5.60 | $ 5.60 | $ 5.60 | $ 5.60
Expected term (in years) | 3.0 | 3.0 | 3 | 3.0 | 3 | 3 years
Risk-free rate | 0.33% | 0.19% |  | 0.70% |  |
Expected volatility | 99.30% | 97.90% |  | 96.60% |  |

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