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Derivatives - Additional Information (Details)
bbl in Thousands
3 Months Ended
Mar. 31, 2020
$ / bbl
bbl
Credit Derivatives [Line Items]  
Derivative contracts, barrels 485
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% Convertible Senior Notes due 2021 | Convertible Debt  
Credit Derivatives [Line Items]  
Debt instrument, interest rate 5.00%
Futures  
Credit Derivatives [Line Items]  
Derivative contracts, barrels 485
Swaps  
Credit Derivatives [Line Items]  
Derivative contracts, barrels 0
Option Collars  
Credit Derivatives [Line Items]  
Derivative contracts, barrels 75
Purchases  
Credit Derivatives [Line Items]  
Derivative contracts, barrels 9,485
Purchases | Futures  
Credit Derivatives [Line Items]  
Derivative contracts, barrels 1,485
Purchases | Swaps  
Credit Derivatives [Line Items]  
Derivative contracts, barrels 8,000
Sales  
Credit Derivatives [Line Items]  
Derivative contracts, barrels 9,000
Sales | Futures  
Credit Derivatives [Line Items]  
Derivative contracts, barrels 1,000
Sales | Swaps  
Credit Derivatives [Line Items]  
Derivative contracts, barrels 8,000
Minimum | Option Collars  
Credit Derivatives [Line Items]  
Derivative, average price risk option strike price | $ / bbl 48.77
Maximum | Option Collars  
Credit Derivatives [Line Items]  
Derivative, average price risk option strike price | $ / bbl 65.00