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Convertible debentures (Details Narrative) - CAD ($)
$ / shares in Units, shares in Thousands, $ in Thousands
 12 Months Ended
Dec. 10, 2020
May 27, 2020
Jun. 06, 2017
Dec. 31, 2020
Dec. 31, 2019
Jan. 11, 2021
Convertible Debentures [Line Items]            
Convertible debentures principal amount   $ 12,621 $ 15,000      
Convertible debentures, maturity date   May 31, 2022 May 31, 2020      
Accumulated Depreciation   45.00%        
Conversion price per share   $ 2.75        
Percentage of former conversion price   115.00%        
Convertible debentures, terms of conversion feature   At any time that the 20-day VWAP of the common shares on the TSX exceeds $3.4375 per share, representing 125% of the Conversion Price, the Company may convert the convertible debentures in whole or in part, including any accrued interest, to common shares at the Conversion Price of $2.75 per common share. This trigger price was changed from 115% of the former conversion price to 125% of the new Conversion Price as a result of the Amendments. Additionally, the convertible debentures are convertible, at the option of the holder, in whole or in part, into common shares of the Company at any time before the maturity date at the Conversion Price of $2.75 per share.        
Description for the payment of convertible debentures   Upon maturity the convertible debentures are payable, at the Company’s option, either i) in common shares of the Company issued at a price equal to the 20-day VWAP of the common shares on the TSX ending on the fifth day prior to the maturity date, or ii) in cash.        
Convertible debentures principal amount   $ 12,621 $ 15,000      
Transaction costs   $ 796   $ 796 $ 1,318  
Unamortized discount and transaction costs $ 927          
Interest expense related to previous debt and replaced convertible debenture       $ 1,219 $ 1,274  
Debt conversion converted instrument shares issued       1,431,982 58,200  
Debt conversion converted amount       $ 3,938 $ 291  
Shares issued in lieu of interest payable       723,025 308,502  
Debt conversion interest payable       $ 1,230    
Ordinary share transactions [Member]            
Convertible Debentures [Line Items]            
Conversion price per share           $ 2.75
TSX [Member]            
Convertible Debentures [Line Items]            
Percentage of new conversion price   125.00%        
Top of range [member]            
Convertible Debentures [Line Items]            
Conversion price per share   $ 5.00        
Bottom of range [member]            
Convertible Debentures [Line Items]            
Conversion price per share   2.75        
Bottom of range [member] | TSX [Member]            
Convertible Debentures [Line Items]            
Conversion price per share   $ 3.4375