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Convertible Debentures - Summary of Detailed Information about Convertible Debentures (Detail) - CAD ($)
Dec. 31, 2018
Dec. 31, 2017
Convertible debentures [line items]    
Convertible debentures $ 138,190,884 $ 171,369,966
2016 Debentures [member]    
Convertible debentures [line items]    
Convertible debentures 72,481,375 90,742,373
2017 Debentures [member]    
Convertible debentures [line items]    
Convertible debentures $ 65,709,509 $ 80,627,593