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Commitments and Contingencies (Details)
$ in Thousands
Dec. 31, 2020
CAD ($)
Disclosure Of Maturity Analysis Of Lease And Other Payments [Line Items]  
Processing agreements $ 6,361
Transportation agreements 98,406
Total 104,767
Less than 1 year  
Disclosure Of Maturity Analysis Of Lease And Other Payments [Line Items]  
Processing agreements 836
Transportation agreements 16,698
Total 17,534
1-3 years  
Disclosure Of Maturity Analysis Of Lease And Other Payments [Line Items]  
Processing agreements 1,320
Transportation agreements 40,351
Total 41,671
3-5 years  
Disclosure Of Maturity Analysis Of Lease And Other Payments [Line Items]  
Processing agreements 474
Transportation agreements 24,903
Total 25,377
After 5 years  
Disclosure Of Maturity Analysis Of Lease And Other Payments [Line Items]  
Processing agreements 3,731
Transportation agreements 16,454
Total $ 20,185