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v3.21.1

Derivatives - Narrative (Details) bbl in Thousands | 3 Months Ended |
--- | --- | ---
Mar. 31, 2021 $ / bbl bbl | Dec. 31, 2020
Credit Derivatives [Line Items] |  |
Derivative contracts, barrels | bbl | 250 |
Average fixed interest rate |  | 3.91%
5.00% Convertible Senior Notes due 2021 |  |
Credit Derivatives [Line Items] |  |
Debt instrument, interest rate | 5.00% | 5.00%
5.00% Convertible Senior Notes due 2021 | Convertible Debt |  |
Credit Derivatives [Line Items] |  |
Debt instrument, interest rate | 5.00% |
Option Collars |  |
Credit Derivatives [Line Items] |  |
Derivative contracts, barrels | bbl | 25 |
Option Collar - Floor | Maximum |  |
Credit Derivatives [Line Items] |  |
Derivative, average price risk option strike price | $ / bbl | 36.50 |
Option Collar - Ceiling | Maximum |  |
Credit Derivatives [Line Items] |  |
Derivative, average price risk option strike price | $ / bbl | 60.00 |

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