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Financial Instruments and Financial Risk Management (Details) - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2019
Dec. 31, 2018
Dec. 31, 2017
Financial Instruments And Financial Risk Management [Line Items]      
Balance $ 2,667  
Revaluation during the year (974) $ (765)
Reclassification of warrants (see Note 12)   (1,693)  
Balance   2,667
Warrants [Member]      
Financial Instruments And Financial Risk Management [Line Items]      
Balance 2,667  
Revaluation during the year   (974)  
Reclassification of warrants (see Note 12)   (1,693)  
Balance   $ 2,667