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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