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Segment Information (Summary Of Total Assets For Operating Segments) (Details) - USD ($) $ in Thousands | Sep. 30, 2020 | Dec. 31, 2019
--- | --- | ---
Segment Reporting Information [Line Items] |  |  |
Total assets | [1] | $ 1,537,420 | $ 1,698,218
Operating Segments [Member] | Ethanol Production [Member] |  |  |
Segment Reporting Information [Line Items] |  |  |
Total assets | [1] | 916,168 | 884,293
Operating Segments [Member] | Agribusiness and Energy Services [Member] |  |  |
Segment Reporting Information [Line Items] |  |  |
Total assets | [1] | 293,868 | 410,400
Operating Segments [Member] | Partnership [Member] |  |  |
Segment Reporting Information [Line Items] |  |  |
Total assets | [1] | 87,299 | 90,011
Intersegment Eliminations [Member] |  |  |
Segment Reporting Information [Line Items] |  |  |
Total assets | [1] | (15,978) | (10,766)
Corporate, Non-Segment [Member] |  |  |
Segment Reporting Information [Line Items] |  |  |
Total assets | [1] | $ 256,063 | $ 324,280
[1] | Asset balances by segment exclude intercompany balances

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