Derivatives and Fair Value (Effect of Derivative Instruments on the Condensed Consolidated Statements of Operations) (Details) - Crude Oil Swaps [Member] - USD ($) $ in Thousands |
12 Months Ended | ||
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Dec. 31, 2019 |
Dec. 31, 2018 |
Dec. 31, 2017 |
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Derivative Instruments, Gain (Loss) [Line Items] | |||
Derivative, gain (loss) | $ (446) | $ 4,264 | $ (1,032) |
Realized Gain - Contract Settlements [Member] | |||
Derivative Instruments, Gain (Loss) [Line Items] | |||
Derivative, gain (loss) | 2,439 | 744 | 195 |
Unrealized (Gain) Loss [Member] | |||
Derivative Instruments, Gain (Loss) [Line Items] | |||
Derivative, gain (loss) | $ (2,885) | $ 3,520 | $ (1,227) |
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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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