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Segment Information (Summary Of Financial Data) (Details) - USD ($) $ in Thousands | 3 Months Ended
--- | ---
Mar. 31, 2017 | Mar. 31, 2016
Segment Reporting Information [Line Items] |  |
Revenues | $ 887,684 | $ 749,204
Costs of goods sold | 811,896 | 724,687
Operating income (loss) | 17,392 | (22,646)
Depreciation and amortization | 26,083 | 18,145
Intersegment Eliminations [Member] |  |
Segment Reporting Information [Line Items] |  |
Costs of goods sold | (36,671) | (28,480)
Operating income (loss) | (75) | (698)
Revenue From External Customers [Member] |  |
Segment Reporting Information [Line Items] |  |
Revenues | 887,684 | 749,204
Intersegment Revenue [Member] | Intersegment Eliminations [Member] |  |
Segment Reporting Information [Line Items] |  |
Revenues | (36,783) | (29,214)
Revenue Including Intersegment Activity [Member] |  |
Segment Reporting Information [Line Items] |  |
Revenues | 924,467 | 778,418
Ethanol Production [Member] |  |
Segment Reporting Information [Line Items] |  |
Costs of goods sold | 599,138 | 534,498
Operating income (loss) | (6,598) | (29,565)
Depreciation and amortization | 20,342 | 15,780
Ethanol Production [Member] | Revenue From External Customers [Member] |  |
Segment Reporting Information [Line Items] |  |
Revenues | 619,879 | 528,328
Ethanol Production [Member] | Intersegment Revenue [Member] |  |
Segment Reporting Information [Line Items] |  |
Revenues | 1,496 |
Ethanol Production [Member] | Revenue Including Intersegment Activity [Member] |  |
Segment Reporting Information [Line Items] |  |
Revenues | 621,375 | 528,328
Agribusiness And Energy Services [Member] |  |
Segment Reporting Information [Line Items] |  |
Costs of goods sold | 166,394 | 159,415
Operating income (loss) | 6,369 | 3,737
Depreciation and amortization | 660 | 306
Agribusiness And Energy Services [Member] | Revenue From External Customers [Member] |  |
Segment Reporting Information [Line Items] |  |
Revenues | 168,311 | 160,144
Agribusiness And Energy Services [Member] | Intersegment Revenue [Member] |  |
Segment Reporting Information [Line Items] |  |
Revenues | 9,492 | 7,409
Agribusiness And Energy Services [Member] | Revenue Including Intersegment Activity [Member] |  |
Segment Reporting Information [Line Items] |  |
Revenues | 177,803 | 167,553
Food And Ingredients [Member] |  |
Segment Reporting Information [Line Items] |  |
Costs of goods sold | 83,035 | 59,254
Operating income (loss) | 9,626 | (1,363)
Depreciation and amortization | 2,880 | 271
Food And Ingredients [Member] | Revenue From External Customers [Member] |  |
Segment Reporting Information [Line Items] |  |
Revenues | 98,022 | 58,711
Food And Ingredients [Member] | Intersegment Revenue [Member] |  |
Segment Reporting Information [Line Items] |  |
Revenues | 38 | 37
Food And Ingredients [Member] | Revenue Including Intersegment Activity [Member] |  |
Segment Reporting Information [Line Items] |  |
Revenues | 98,060 | 58,748
Partnership [Member] |  |
Segment Reporting Information [Line Items] |  |
Costs of goods sold |  |
Operating income (loss) | 16,619 | 13,071
Depreciation and amortization | 1,254 | 1,217
Partnership [Member] | Revenue From External Customers [Member] |  |
Segment Reporting Information [Line Items] |  |
Revenues | 1,472 | 2,021
Partnership [Member] | Intersegment Revenue [Member] |  |
Segment Reporting Information [Line Items] |  |
Revenues | 25,757 | 21,768
Partnership [Member] | Revenue Including Intersegment Activity [Member] |  |
Segment Reporting Information [Line Items] |  |
Revenues | 27,229 | 23,789
Corporate Activities [Member] |  |
Segment Reporting Information [Line Items] |  |
Operating income (loss) | (8,549) | (7,828)
Depreciation and amortization | $ 947 | $ 571

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