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SHARE CAPITAL AND RESERVES (Summary of the Company's Other Equity Instruments and the Changes for the Year) (Details) - Warrants [member]
 12 Months Ended
Dec. 31, 2017
USD ($)
Dec. 31, 2017
shares
Dec. 31, 2016
shares
Disclosure of terms and conditions of share-based payment arrangement [line items]      
Beginning of period, warrants   28,046,400 29,307,173
Granted   2,025,314  
Expired unexercised, warrants   (5,002,500) (1,256,662)
Exercised, warrants   (1,059,242) (4,111)
End of period, warrants 24,009,972 24,009,972 28,046,400
Beginning of period, Shares to be Issued Upon Exercise of the Warrants   28,046,400 29,307,173
Addition, Shares to be Issued Upon Exercise of the Warrants   2,025,314  
Expired, Shares to be Issued Upon Exercise of the Warrants   (5,002,500) (1,256,662)
Exercised, Shares to be Issued Upon Exercise of the Warrants   (1,059,242) (4,111)
End of period, Shares to be Issued Upon Exercise of the Warrants   24,009,972 28,046,400