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Share-Based Payment (Tables)
12 Months Ended
Dec. 31, 2020
Disclosure of terms and conditions of share-based payment arrangement [abstract]  
Schedule of Expenses Recognized in Financial Statements
The expenses recognized in the financial statements for services received from directors and employees is shown in the following table:

   
Year ended December 31
 
   
2020
   
2019
   
2018
 
   
€ thousand
 
Expenses arising from share-based payment
                 
 Transactions
   
50
     
8
     
5
 

Schedule of Black-Scholes Options Pricing Model
The fair value of the options is estimated using a Black-Scholes options pricing model with the following weighted average assumptions:

   
Year ended December 31
 
   
2020
   
2019
   
2018
 
Dividend yield
   
0
%
   
0
%
   
0
%
Expected volatility
   
0.427
     
0.428
     
0.384
 
Risk-free interest
   
0.11
%
   
1.73
%
   
2.67
%
Expected life (in years)
   
2-3
     
2-3
     
2-3
 

Schedule of Weighted Average Fair Values and Exercise Price
Weighted average fair values and exercise price of options on dates of grant are as follows:

   
Equal market price
 
   
2020
   
2019
 
   
US$
 
Weighted average exercise prices
   
28.91
     
11.41
 
                 
Weighted average fair value on grant date
   
9.63
     
3.4
 
Schedule of Number and Weighted Average Exercise Prices of Share Options
The following table lists the number of share options, the weighted average exercise prices of share options during the current year:

   
2020
   
2019
   
2018
 
         
Weighted
         
Weighted
         
Weighted
 
         
Average
         
average
         
Average
 
   
Number of
   
Exercise
   
Number of
   
exercise
   
Number of
   
Exercise
 
   
options
   
Price
   
options
   
price
   
options
   
Price
 
         
US$
         
US$
         
US$
 
Outstanding at
                                   
 beginning of year
   
34,886
     
8.09
     
27,169
     
7.82
     
25,502
     
7.54
 
Granted during
                                               
 the year
   
4,249
     
28.91
     
18,303
     
11.41
     
3,000
     
8.95
 
Exercised during
                                               
 the year
   
(8,000
)
   
7.87
     
(3,586
)
   
6.27
     
-
     
-
 
Expired during
                                               
 the year
   
-
     
-
     
(7,000
)
   
8.25
     
(1,333
)
   
5
 
                                                 
Outstanding at
                                               
 end of year
   
31,135
     
12.94
     
34,886
     
9.83
     
27,169
     
7.82
 
Exercisable at
                                               
 end of year
   
17,018
     
6.3
     
16,583
     
8.09
     
24,169
     
7.68