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SHARE CAPITAL, WARRANTS AND OPTIONS - Preferred shares issued and outstanding (Details) - Preferred
 12 Months Ended
Dec. 31, 2017
Vote
$ / shares
shares
Dec. 31, 2016
shares
Dec. 31, 2015
shares
Common shares and Preferred shares issued and outstanding      
Number of shares outstanding | shares 590,931 590,931 590,931
Number of votes per share at meeting of holders of preference shares | Vote 1    
Period from date of issuance when shares become convertible 6 months    
Period of notice to convert shares 10 days    
Conversion value of share $ 1    
Factor by which number of shares on conversion is calculated $ 0.90