Derivatives and Fair Value (Effect of Derivative Instruments on the Condensed Consolidated Statements of Operations) (Details) - Crude Oil Swaps [Member] - USD ($) $ in Thousands |
3 Months Ended | |
|---|---|---|
Mar. 31, 2021 |
Mar. 31, 2020 |
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| Derivative Instruments, Gain (Loss) [Line Items] | ||
| Derivative instruments gain (loss), net | $ (5,954) | $ 7,339 |
| Realized Gain (Loss) - Contract Settlements [Member] | ||
| Derivative Instruments, Gain (Loss) [Line Items] | ||
| Derivative instruments gain (loss), net | (1,710) | 718 |
| Unrealized Gain (Loss) [Member] | ||
| Derivative Instruments, Gain (Loss) [Line Items] | ||
| Derivative instruments gain (loss), net | $ (4,244) | $ 6,621 |
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- Definition Amount of increase (decrease) in the fair value of derivatives recognized in the income statement. Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. No definition available.
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