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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

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