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SHAREHOLDERS' EQUITY - Equity Offerings (Details) $ / shares in Units, CAD in Thousands, $ in Thousands |  |  |  | 12 Months Ended
--- | --- | --- | --- | ---
Dec. 19, 2017 CAD shares | Dec. 19, 2017 USD ($) $ / shares shares | Sep. 22, 2017 USD ($) item $ / shares shares | Apr. 26, 2017 $ / shares shares | Dec. 31, 2017 USD ($) shares
Number of units issued |  |  | 20,700,000 |  |
Number of warrants issued | item |  |  | 10,350,000 |  |
Price per unit | $ / shares |  | $ 2.50 |  |  |
Issuance expenses related to new stock issue | $ |  |  | $ 3,400 |  | $ 3,353
Net proceeds | $ |  |  | 43,200 |  |
Issuance costs | $ |  |  | $ 3,400 |  | $ 3,353
Number of warrants remained outstanding and unexercised |  |  |  |  | 10,350,000
Common Stock |  |  |  |  |
Number of units issued |  |  |  |  | 20,700
Net proceeds | $ |  |  |  |  | $ 39,397
Warrants |  |  |  |  |
Number of common share per warrant |  |  | 1 |  |
Price per common share for each warrant | $ / shares |  |  | $ 2.70 |  |
Flow Through Common Shares |  |  |  |  |
Number of units issued | 4,000,000 | 4,000,000 |  |  | 4,000
Net proceeds | CAD 12,880 | $ 10,000 |  |  | $ 7,799
Lexam |  |  |  |  |
Number of units issued |  |  |  | 12,687,035 |
Price per unit | $ / shares |  |  |  | $ 3.00 |

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