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LOANS AND BORROWINGS - Narrative (Details)
$ / shares in Units, shares in Thousands, $ in Thousands
3 Months Ended
Aug. 04, 2016
$ / shares
Jul. 24, 2012
CAD ($)
shares
Mar. 31, 2019
USD ($)
Mar. 31, 2018
USD ($)
Mar. 31, 2018
CAD ($)
Aug. 03, 2016
$ / shares
Debt Instrument [Line Items]            
Convertible debentures     $ 17,640 $ 15,880    
Public offering of floating-rate convertible unsecured subordinated debentures (in shares) | shares   22        
Price per debenture issuance   $ 1,000        
Proceeds from issuance of debt   $ 21,550,000        
Conversion price per share | $ / shares $ 4.15         $ 15.00
Price of aggregate principal amount redeemed 101.00%          
Debentures held by the debentureholders 20.00%          
Principal amount purchased plus accrued and unpaid interest 100.00%          
Consecutive trading days   20 days 20 days      
Average trading price is not less than percent of the conversion price     125.00%      
Debt (in CAD)   $ 1,000        
Volume-weighted average trading price of the common shares   95.00%        
Change in value of convertible debentures     $ (1,436) (145)    
Minimum            
Debt Instrument [Line Items]            
Stated interest rate   8.50%        
Obligation to repay debenture   40 days        
Maximum            
Debt Instrument [Line Items]            
Stated interest rate   13.50%        
Obligation to repay debenture   60 days        
Convertible Debentures | Convertible Debt            
Debt Instrument [Line Items]            
Number of days notice to redeem debentures 30 days          
Debt Instrument, principal amount redeemed       $ 870 $ 1,130,000