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CAPITAL STOCK - Narrative (Details) - USD ($) $ / shares in Units, $ in Thousands |  | 3 Months Ended | 9 Months Ended
--- | --- | --- | ---
Aug. 14, 2018 | Sep. 30, 2018 | Sep. 30, 2018 | Sep. 30, 2016
Class of Warrant or Right [Line Items] |  |  |  |
Warrant issued (in shares) |  | 110,000 | 110,000 | 1,270
Fair value of warrants |  | $ 610 |  | $ 100
Share Purchase Warrants Denominated in United States Dollars |  |  |  |
Class of Warrant or Right [Line Items] |  |  |  |
Fair value of warrants |  |  | $ 7,396 |
March 14, 2019 | Share Purchase Warrants Denominated in United States Dollars |  |  |  |
Class of Warrant or Right [Line Items] |  |  |  |
Number of warrants outstanding (in shares) |  | 2,405,625 | 2,405,625 |
Exercise price of warrants (in dollars per share) |  | $ 3.20 | $ 3.20 |
Fair value of warrants |  |  | $ 1,280 |
At The Market Sale Of Stock |  |  |  |
Class of Warrant or Right [Line Items] |  |  |  |
Sale of stock, number of shares issued (in shares) |  |  | 12,573,674 |
Sale of stock, consideration received |  |  | $ 25,640 |
Nichols Ranch, Hank and Doughstick Properties |  |  |  |
Class of Warrant or Right [Line Items] |  |  |  |
Shares issued (in shares) | 1,100,000 |  |  |
Consideration transferred | $ 3,740 |  |  |

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