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v3.20.2

Derivatives - Additional Information (Details) bbl in Thousands | 6 Months Ended |
--- | --- | ---
Jun. 30, 2020 $ / bbl bbl | Jun. 30, 2019
Credit Derivatives [Line Items] |  |
Derivative contracts, barrels | 415 |
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% | 5.00%
Futures |  |
Credit Derivatives [Line Items] |  |
Derivative contracts, barrels | 415 |
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 | 7,335 |
Purchases | Futures |  |
Credit Derivatives [Line Items] |  |
Derivative contracts, barrels | 415 |
Purchases | Swaps |  |
Credit Derivatives [Line Items] |  |
Derivative contracts, barrels | 6,920 |
Sales |  |
Credit Derivatives [Line Items] |  |
Derivative contracts, barrels | 6,920 |
Sales | Futures |  |
Credit Derivatives [Line Items] |  |
Derivative contracts, barrels | 0 |
Sales | Swaps |  |
Credit Derivatives [Line Items] |  |
Derivative contracts, barrels | 6,920 |
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 |

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- Definition Contractual interest rate for funds borrowed, under the debt agreement. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.22(a)(1)) -URI http://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682 + Details
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