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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 |

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