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Convertible Debentures - Summary of Detailed Information about Convertible Debentures, Valuation Assumptions (Detail)
 12 Months Ended
Dec. 31, 2021
CAD ($)
$ / shares
Dec. 31, 2020
CAD ($)
$ / shares
2020 Debentures [member]    
Convertible debentures [line items]    
Volatility 40.00 38.00
Expected life in years 3.41 years 4.41 years
Risk free interest rate 1.78% 0.74%
Expected dividend yield 0.00% 0.00%
Credit spread 16.88% 19.53%
Underlying share price of the Company | $ $ 5.54 $ 3.51
Conversion exercise price | $ / shares $ 2.34 $ 2.34
Exchange rate (C$:US$) 0.791 0.785
ISO Energy Debentures [member]    
Convertible debentures [line items]    
Volatility 50.00 46.00
Expected life in years 3.6 years 4.6 years
Risk free interest rate 1.78% 0.79%
Expected dividend yield 0.00% 0.00%
Credit spread 21.86% 21.70%
Underlying share price of the Company | $ $ 3.74 $ 1.87
Conversion exercise price | $ / shares $ 0.88 $ 0.88
Exchange rate (C$:US$) 0.791 0.785