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Shareholders' Equity (Tables)
12 Months Ended
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