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SHARE CAPITAL, WARRANTS AND OPTIONS - Common shares purchase warrants activity (Details) | 12 Months Ended
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Dec. 31, 2017 EquityInstruments $ / shares | Dec. 31, 2016 EquityInstruments $ / shares | Dec. 31, 2015 EquityInstruments $ / shares
SHARE CAPITAL, WARRANTS AND OPTIONS |  |  |
Outstanding at beginning of year | EquityInstruments | 95,982,036 | 27,738,344 | 25,137,030
Issued | EquityInstruments | 94,971,721 | 81,203,692 | 14,778,344
Cancelled / Expired | EquityInstruments | (14,778,344) | (12,960,000) | (4,715,282)
Exercised | EquityInstruments |  |  | (7,461,748)
Outstanding at end of year | EquityInstruments | 176,175,413 | 95,982,036 | 27,738,344
Weighted Average Exercise Price, Outstanding at beginning of year | $ / shares | $ 0.15 | $ 0.49 | $ 0.47
Weighted Average Exercise Price, Issued | $ / shares | 0.12 | 0.12 | 0.12
Weighted Average Exercise Price, Cancelled / Expired | $ / shares | 0.30 | 0.71 | 0.21
Weighted Average Exercise Price, Exercised | $ / shares |  |  | 0.21
Weighted Average Exercise Price, Outstanding at end of year | $ / shares | $ 0.12 | $ 0.15 | $ 0.49

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