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Disclosure of currency risk (Details)
Dec. 31, 2018
CAD ($)
Dec. 31, 2018
USD ($)
Dec. 31, 2017
CAD ($)
Dec. 31, 2016
CAD ($)
Dec. 31, 2015
CAD ($)
Statements Line Items          
Cash and cash equivalents $ 86,175,331   $ 3,533,611 $ 3,199,686 $ 5,634,601
Restricted cash 618,525   771,434    
Trade receivables 7,506,316   3,376,411    
Settlement receivables 902,991        
Accounts payable and accrued liabilities (5,731,161)   (749,865)    
Advances from joint venture partners (615,669)   $ (808,905)    
Currency Risk [Member]          
Statements Line Items          
Cash and cash equivalents   $ 62,065,449      
Restricted cash   390,457      
Trade receivables   4,449,430      
Settlement receivables   662,500      
Accounts payable and accrued liabilities   (3,932,765)      
Advances from joint venture partners   (334,721)      
Net exposure $ 86,278,758 $ 63,300,351