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Share Capital (Narrative) (Details) - USD ($)
 1 Months Ended 12 Months Ended
Mar. 15, 2021
Nov. 17, 2023
Oct. 31, 2023
Nov. 16, 2022
Sep. 19, 2022
Apr. 25, 2022
Apr. 30, 2021
Mar. 22, 2021
Dec. 31, 2023
Dec. 31, 2022
Dec. 31, 2021
Sep. 30, 2022
Sale Of Stock [Line Items]                        
Number of ADSs issued     2,863,664                  
Options to purchase ADS cancelled                 20,373,620 1,240,120 1,712,275  
Sale of treasury share   $ 580,000             $ 580,000 $ 0 $ 0  
2015 plan [Member]                        
Sale Of Stock [Line Items]                        
Number of ADSs issued                 172,276      
Number of stock reserved for issuance                 28,443,060      
Number Of Stock Adss Resvered For Issuance                 1,422,153      
Number of ADSs options issuable outstanding                 341,322      
Number of options issuable outstanding                 6,826,440      
Number of ADSs vested and exercisable                 319,708      
Number of options vested and exercisable                 6,394,160      
Weighted average exercise price                 $ 0.3      
Weighted average exercise price of ADSs                 $ 5.98      
Number of shares issued                 3,445,520      
Options to purchase ADS cancelled                 16,634,300      
Options to purchase ordinary shares cancelled                 831,715      
2017 plan [Member]                        
Sale Of Stock [Line Items]                        
Number of ADSs issued                 1,152,333      
Number of stock reserved for issuance                 23,061,380      
Number Of Stock Adss Resvered For Issuance                 1,153,069      
Number of ADSs vested and exercisable                 184,474      
Number of options vested and exercisable                 3,689,480      
Weighted average exercise price                 $ 0.2      
Weighted average exercise price of ADSs                 $ 3.91      
Number of shares issued                 23,046,660      
The Private Placement [Member]                        
Sale Of Stock [Line Items]                        
Proceeds from sale of ADS's $ 45,500,000             $ 4,500,000        
Number of ADSs issued               261,929        
Number of warrants purchase ADS's               2,619,270        
Share price per share               $ 17.35        
ATM agreement [Member]                        
Sale Of Stock [Line Items]                        
Aggregate offering price of at the market offering agreement             $ 75,000,000          
Proceeds from sale of ADS's             $ 15,917,000   $ 1,371,000 $ 275,000    
Number of ADSs issued           18,125,000 699,806   772,900 130,505    
Share price per share             $ 22.75   $ 1.83 $ 2.11    
Repurchase arrangement [Member]                        
Sale Of Stock [Line Items]                        
Repurchase of ADSs                       $ 2,500,000
Number of shares repurchase of ADSs       582,023 582,023              
Weighted average price of repurchase of ADSs       $ 2.0848                
Total consideration of repurchase of ADSs       $ 1,218,000                
Roth Capital Partners, LLC [Member] | Market offering agreement [Member]                        
Sale Of Stock [Line Items]                        
Number of ADSs issued     2,863,664           1,800,000      
Weighted average price of repurchase of ADSs                 $ 0.96      
Total consideration of repurchase of ADSs                 $ 1,553,000