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Stockholders' Equity (Reclassification From Accumulated Other Comprehensive Income (Loss)) (Details) - USD ($) $ in Thousands | 3 Months Ended | 9 Months Ended
--- | --- | ---
Sep. 30, 2020 | Jun. 30, 2020 | Mar. 31, 2020 | Sep. 30, 2019 | Jun. 30, 2019 | Mar. 31, 2019 | Sep. 30, 2020 | Sep. 30, 2019
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items] |  |  |  |  |  |  |  |  |
Income tax benefit |  | $ 7,280 |  |  | $ (12,530) |  |  | $ (48,461) | $ (40,692)
Net loss |  | $ (30,733) | $ (5,474) | $ (10,347) | (35,491) | $ (40,179) | $ (37,871) | (46,554) | (113,541)
Amounts Reclassified from Accumulated Other Comprehensive Income (Loss) [Member] |  |  |  |  |  |  |  |  |
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items] |  |  |  |  |  |  |  |  |
Loss from continuing operations before income taxes and income (loss) from equity method investees | [1] |  |  |  |  |  |  | 5,923 |
Net income from discontinued operations, net of taxes | [2] |  |  |  | 53,255 |  |  |  | 39,439
Income tax benefit | [3] |  |  |  |  |  |  | (1,431) |
Net loss |  |  |  |  | $ 53,255 |  |  | 4,492 | $ 39,439
Amounts Reclassified from Accumulated Other Comprehensive Income (Loss) [Member] | Commodity Contracts [Member] |  |  |  |  |  |  |  |  |
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items] |  |  |  |  |  |  |  |  |
Revenues | [4] |  |  |  |  |  |  | 8,824 |
Cost of goods sold | [5] |  |  |  |  |  |  | $ (2,901) |
[1] | Loss from continuing operations before income taxes and income from equity method investees
[2] | Net income from discontinued operations, net of income taxes
[3] | Income tax benefit (expense)
[4] | Revenues
[5] | Costs of goods sold

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