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Segment Information (Summary Of Financial Data) (Details) - USD ($) $ in Thousands | 3 Months Ended | 9 Months Ended
--- | --- | ---
Sep. 30, 2020 | Sep. 30, 2019 | Sep. 30, 2020 | Sep. 30, 2019
Segment Reporting Information [Line Items] |  |  |  |  |  |
Revenues |  | $ 424,062 | $ 632,350 | [1] | $ 1,444,955 | $ 1,701,560
Cost of goods sold |  | 393,933 | 632,129 |  | 1,372,057 | 1,700,481
Operating income (loss) |  | (14,205) | (42,365) |  | (87,901) | (127,648)
Depreciation and amortization |  | 19,753 | 17,828 |  | 57,208 | 52,963
Goodwill impairment |  |  |  |  | 24,091 |
Operating Segments [Member] |  |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |  |
Revenues |  | 449,788 | 658,503 | [1] | 1,520,387 | 1,777,818
Intersegment Eliminations [Member] |  |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |  |
Revenues |  | (25,726) | (26,153) | [1] | (75,432) | (76,258)
Cost of goods sold |  | (23,256) | (30,866) |  | (70,761) | (76,716)
Operating income (loss) |  | (2,447) | 4,738 |  | (4,597) | 533
Ethanol Production [Member] |  |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |  |
Revenues |  | 332,978 | 484,406 | [1] | 1,099,245 | 1,206,182
Goodwill impairment |  |  |  |  | 24,091 |
Ethanol Production [Member] | Operating Segments [Member] |  |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |  |
Revenues |  | 332,953 | 484,382 | [1] | 1,099,170 | 1,206,107
Cost of goods sold |  | 330,162 | 512,527 |  | 1,103,486 | 1,289,366
Operating income (loss) | [2] | (21,351) | (49,289) |  | (100,924) | (147,366)
Depreciation and amortization |  | 17,493 | 15,547 |  | 50,575 | 46,324
Goodwill impairment |  |  |  |  | 24,100 |
Ethanol Production [Member] | Intersegment Eliminations [Member] |  |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |  |
Revenues |  | (25) | (24) | [1] | (75) | (75)
Agribusiness and Energy Services [Member] |  |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |  |
Revenues |  | 95,428 | 153,943 | [1] | 359,108 | 508,119
Agribusiness and Energy Services [Member] | Operating Segments [Member] |  |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |  |
Revenues |  | 90,074 | 146,650 | [1] | 342,078 | 488,687
Cost of goods sold |  | 87,027 | 150,465 |  | 339,332 | 486,305
Operating income (loss) |  | 4,296 | (461) |  | 7,207 | 9,184
Depreciation and amortization |  | 655 | 541 |  | 1,764 | 1,642
Agribusiness and Energy Services [Member] | Intersegment Eliminations [Member] |  |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |  |
Revenues |  | (5,354) | (7,293) | [1] | (17,030) | (19,432)
Food & Ingredients [Member] |  |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |  |
Revenues |  |  |  |  |  | 1,451
Food & Ingredients [Member] | Operating Segments [Member] |  |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |  |
Revenues |  |  |  |  |  | 1,451
Cost of goods sold |  |  | 3 |  |  | 1,526
Operating income (loss) |  |  | (6) |  |  | (76)
Partnership [Member] |  |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |  |
Revenues |  | 21,382 | 20,154 | [1] | 62,034 | 62,066
Goodwill impairment |  |  |  |  |  |
Partnership [Member] | Operating Segments [Member] |  |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |  |
Revenues |  | 1,035 | 1,318 | [1] | 3,707 | 5,315
Operating income (loss) |  | 12,986 | 12,322 |  | 37,641 | 38,029
Depreciation and amortization |  | 940 | 991 |  | 2,867 | 2,747
Partnership [Member] | Intersegment Eliminations [Member] |  |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |  |
Revenues |  | (20,347) | (18,836) | [1] | (58,327) | (56,751)
Corporate Activities [Member] |  |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |  |
Operating income (loss) |  | (7,689) | (9,669) |  | (27,228) | (27,952)
Depreciation and amortization |  | $ 665 | $ 749 |  | $ 2,002 | $ 2,250
[1] | Product revenues, costs of goods sold and selling, general and administrative expenses include certain revenue and expense items which were previously considered intercompany transactions prior to the disposition of GPCC and therefore eliminated upon consolidation. These revenue and costs of goods sold transactions total $5.5 million and $14.5 million for the three and nine months ended September 30, 2019, respectively.
[2] | For the nine months ended September 30, 2020, operating loss for ethanol production includes a goodwill impairment charge of $24.1 million.

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