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Pending exterran transaction - Additional Information (Detail) - CAD ($)
$ in Thousands
 3 Months Ended 12 Months Ended
Mar. 31, 2022
Dec. 31, 2020
Dec. 31, 2021
Statements [Line Items]      
Borrowings, maturity   December 15, 2024  
Borrowings $ 339,126 $ 389,712 $ 331,422
Senior Secured Revolving Credit Facility [Member]      
Statements [Line Items]      
Borrowings, maturity 3-year    
Bridge Loan Facility [Member]      
Statements [Line Items]      
Borrowings, maturity 5-year    
Borrowings $ 925,000    
Bottom of range [member] | Senior Secured Revolving Credit Facility [Member]      
Statements [Line Items]      
Borrowings 600,000    
Top of range [member] | Senior Secured Revolving Credit Facility [Member]      
Statements [Line Items]      
Borrowings $ 700,000