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Shareholders' Equity (Tables) | 12 Months Ended
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Dec. 31, 2020
Shareholders' Equity (Tables) [Line Items] |
Schedule of share-based payments to non-employees |
|  | Year ended December 31, |  |  | Year ended December 31, |
|  | 2020 |  |  | 2019 |
|  | Number of |  |  | Weighted |  |  | Number of |  |  | Weighted |
|  | share-based |  |  | average |  |  | share-based |  |  | average |
|  | payment |  |  | exercise |  |  | payment |  |  | exercise |
|  | awards |  |  | price |  |  | awards |  |  | price |
Outstanding at beginning of year |  |  | 3,410,406 |  |  | $ | 1.89 |  |  |  | 1,592,874 |  |  | $ | 1.32 |
Changes during the year: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Granted |  |  | 1,327,957 |  |  |  | 13.70 |  |  |  | 2,271,698 |  |  | $ | 2.77 |
Exercised |  |  | *(1,267,012 | ) |  |  | 8.94 |  |  |  | (454,166 | ) |  | $ | 0.3 |
Forfeited |  |  | - |  |  |  | - |  |  |  | - |  |  |  | - |
Expired |  |  | - |  |  |  | - |  |  |  | - |  |  |  | - |
Cancelled |  |  | (98,725 | ) |  |  | 1.92 |  |  |  | - |  |  |  | - |
Outstanding at end of year |  |  | 3,372,626 |  |  |  | 5.27 |  |  |  | 3,410,406 |  |  | $ | 1.89 |
Exercisable at end of year |  |  | 2,191,042 |  |  |  | 5.67 |  |  |  | 1,830,809 |  |  | $ | 3.79 |
Schedule of Black-Scholes option-pricing model |
|  | 2020 |  |  | 2019 |
Dividend yield |  |  | 0 |  |  |  | 0 |
Expected volatility |  |  | 57.34%-44.40% |  |  |  | 41.11% - 50.59% |
Risk-free interest rate |  |  | 0.27%-1.61% |  |  |  | 1.55%-1.76% |
Contractual term (years) |  |  | 5-10 |  |  |  | 0.50 – 10.00 |
Schedule of information concerning outstanding and exercisable awards |
December 31, 2020 |
Awards outstanding |  |  | Awards exercisable |
|  |  | Number of |  |  | Weighted |  |  | Number of |  |  | Weighted |
|  |  | awards |  |  | average |  |  | award |  |  | average |
|  |  | outstanding |  |  | remaining |  |  | exercisable |  |  | remaining |
Exercise |  |  | at end of |  |  | contractual |  |  | at end of |  |  | contractual |
price |  |  | year |  |  | life (years) |  |  | year |  |  | life (years) |
$ | 0.01 |  |  |  | 186,815 |  |  |  | 0.33 |  |  |  | 186,815 |  |  |  | 0.33 |
$ | 1.92 |  |  |  | 269,714 |  |  |  | 1.18 |  |  |  | 269,714 |  |  |  | 1.18 |
$ | 2.21 |  |  |  | 2,191,349 |  |  |  | 6.22 |  |  |  | 1,188,914 |  |  |  | 6.22 |
$ | 16.00 |  |  |  | 444,748 |  |  |  | 8.89 |  |  |  | 283,933 |  |  |  | 8.89 |
$ | 18.00 |  |  |  | 260,000 |  |  |  | 3.86 |  |  |  | 260,000 |  |  |  | 3.86 |
$ | 30.93 |  |  |  | 20,000 |  |  |  | 9.81 |  |  |  | 1,666 |  |  |  | 9.81 |
December 31, 2019 |
Awards outstanding |  |  | Awards exercisable |
|  |  | Number of |  |  | Weighted |  |  | Number of |  |  | Weighted |
|  |  | awards |  |  | average |  |  | awards |  |  | average |
|  |  | outstanding |  |  | remaining |  |  | exercisable |  |  | remaining |
Exercise |  |  | at end of |  |  | contractual |  |  | at end of |  |  | contractual |
price |  |  | year |  |  | life (years) |  |  | year |  |  | Life (years) |
$ | 0.01 |  |  |  | 186,815 |  |  |  | 1.33 |  |  |  | 186,815 |  |  |  | 1.33 |
$ | 1.92 |  |  |  | 472,606 |  |  |  | 1.81 |  |  |  | 472,606 |  |  |  | 1.81 |
$ | 2.21 |  |  |  | 2,727,028 |  |  |  | 5.27 |  |  |  | 1,163,402 |  |  |  | 5.27 |
$ | 20.87 |  |  |  | 23,957 |  |  |  | 5.69 |  |  |  | 7,986 |  |  |  | 5.69 |
Schedule of share-based compensation |
|  | Year Ended December 31, |
|  | 2020 |  |  | 2019 |  |  | 2018 |
|  | (U.S. dollars in thousands) |
Research and development |  |  | 3,384 |  |  |  | 661 |  |  |  | - |
Marketing (*) |  |  | 9,252 |  |  |  | 617 |  |  |  | - |
General and administrative |  |  | 12,145 |  |  |  | 14,967 |  |  |  | 115 |
|  |  | 24,781 |  |  |  | 16,245 |  |  |  | 115 |
Employees, Officers and Directors [Member] |
Shareholders' Equity (Tables) [Line Items] |
Schedule of Black-Scholes option-pricing model |
|  | 2020 |  |  | 2019 |
Dividend yield |  |  | 0 |  |  |  | 0 |
Expected volatility |  |  | 45.11%-55.97% |  |  |  | 45.11%-55.97% |
Risk-free interest rate |  |  | 0.23%-1.61% |  |  |  | 0.23%-1.61% |
Contractual term (years) |  |  | 10 |  |  |  | 10 |
Schedule of information concerning outstanding and exercisable awards |
December 31, 2020 |
Awards outstanding |  |  | Awards exercisable |
|  |  | Number of |  |  | Weighted |  |  | Number of |  |  | Weighted |
|  |  | awards |  |  | average |  |  | awards |  |  | average |
|  |  | outstanding |  |  | remaining |  |  | exercisable |  |  | remaining |
Exercise |  |  | at end of |  |  | contractual |  |  | at end of |  |  | contractual |
price |  |  | year |  |  | life (years) |  |  | year |  |  | life (years) |
| $2.21 |  |  |  | 1,995,625 |  |  |  | 9.05 |  |  |  | 1,019,695 |  |  |  | 9.05 |
| $16.00 |  |  |  | 205,000 |  |  |  | 9.62 |  |  |  | 37,917 |  |  |  | 9.62 |
| $26.56-$59.20 |  |  |  | 180,500 |  |  |  | 9.93 |  |  |  | 4,167 |  |  |  | 9.93 |
December 31, 2019 |
Awards outstanding |  |  | Awards exercisable |
|  |  | Number of |  |  | Weighted |  |  | Number of |  |  | Weighted |
|  |  | awards |  |  | average |  |  | awards |  |  | average |
|  |  | outstanding |  |  | remaining |  |  | exercisable |  |  | remaining |
Exercise |  |  | at end of |  |  | contractual |  |  | at end of |  |  | contractual |
price |  |  | year |  |  | life (years) |  |  | year |  |  | life (years) |
| $2.21 |  |  |  | 1,667,267 |  |  |  | 9.90 |  |  |  | 450,557 |  |  |  | 9.90 |
Schedule of shared - based payments to employees |
|  | Year ended December 31, |  |  | Year ended December 31, |
|  | 2020 |  |  | 2019 |
|  |  | Number of |  |  |  | Weighted |  |  |  | Number of |  |  |  | Weighted |
|  |  | share-based |  |  |  | average |  |  |  | share-based |  |  |  | average |
|  |  | payment awards |  |  |  | exercise price |  |  |  | payment awards |  |  |  | exercise price |
Outstanding at beginning of year |  |  | 1,667,267 |  |  | $ | 2.21 |  |  |  | 1,667,267 |  |  | $ | 2.21 |
Changes during the year: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Granted |  |  | 730,734 |  |  | $ | 13.53 |  |  |  | - |  |  |  | - |
Exercised |  |  | - |  |  |  | - |  |  |  | - |  |  |  | - |
Forfeited |  |  | - |  |  |  | - |  |  |  | - |  |  |  | - |
Expired |  |  | - |  |  |  | - |  |  |  | - |  |  |  | - |
Cancelled |  |  | (16,876 | ) |  | $ | 2.21 |  |  |  | - |  |  |  | - |
Outstanding at end of year |  |  | 2,381,125 |  |  | $ | 4.14 |  |  |  | 1,667,267 |  |  |  | 2.21 |
Exercisable at end of year |  |  | 1,061,778 |  |  | $ | 2.80 |  |  |  | 450,557 |  |  |  | 2.21 |

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