Revenue from Contracts with Customers - Current Long-Term Contracts Outstanding (Details)	Dec. 31, 2019 MMcf / d Boe / d	Dec. 31, 2018 MMcf / d Boe / d
End Date, Q4, 2021 | United States
Disaggregation of Revenue [Line Items]
Approximate Volumes | Boe / d	17,000	17,000
End Date, Q4, 2021 | Canada | USD Index Pricing
Disaggregation of Revenue [Line Items]
Approximate Volumes	10
End Date, Q4, 2020 | Canada | Alberta AECO
Disaggregation of Revenue [Line Items]
Approximate Volumes	59	59
End Date, Q4, 2020 | Canada | USD Index Pricing
Disaggregation of Revenue [Line Items]
Approximate Volumes	60	60
End Date, Q4, 2024 | Canada | USD Index Pricing
Disaggregation of Revenue [Line Items]
Approximate Volumes	30	30
End Date, Q4, 2026 | Canada | USD Index Pricing
Disaggregation of Revenue [Line Items]
Approximate Volumes	38	38
End Date, Q3, 2019 | United States
Disaggregation of Revenue [Line Items]
Approximate Volumes | Boe / d		4,000
End Date, Q4, 2026 | Canada | USD Index Pricing
Disaggregation of Revenue [Line Items]
Approximate Volumes	11