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BASIC AND DILUTED LOSS PER SHARE (Narrative) (Details) - shares
12 Months Ended
Dec. 31, 2020
Dec. 31, 2019
Dec. 31, 2018
Warrants [Member]      
Disclosure of classes of share capital [line items]      
Number of ordinary shares related to the outstanding options excluded from the calculation of diluted loss per share 7,072,384 4,849,855  
2012 Convertible Loan, preferred shares and warrants [Member]      
Disclosure of classes of share capital [line items]      
Number of ordinary shares related to the outstanding options excluded from the calculation of diluted loss per share     10,596,130