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Related Party Transactions (Details Textual) | 3 Months Ended |  |  |
--- | --- | --- | --- | ---
Mar. 31, 2018 USD ($) | Mar. 31, 2017 USD ($) | Mar. 02, 2018 gal | Dec. 31, 2017 USD ($) | Jan. 01, 2017
Related Party Transaction [Line Items] |  |  |  |  |
Total distributions received from unconsolidated affiliates | $ 1,200,000 | $ 0 |  |  |
Revenues recognized for the sale of ethanol | 146,200,000 | 123,300,000 |  |  |
Revenues recognized for the sale of corn |  | 117,500,000 |  |  |
Related party, gross assets | 600,000 | 2,000,000 |  | $ 200,000 |
Related party, gross liability | $ 2,900,000 | $ 500,000 |  | $ 2,500,000 |
ELEMENT, LLC | Subsidiary |  |  |  |  |
Related Party Transaction [Line Items] |  |  |  |  |
Noncontrolling interest is attributed of all gains and losses of parent (percentage) |  |  | 49.00% |  |
Percentage of company's interest in subsidiary |  |  | 51.00% |  |
Maximum production capacity of bio-refinery (gallons) | gal |  |  | 70,000,000 |  |
TAEI |  |  |  |  |
Related Party Transaction [Line Items] |  |  |  |  |
Percentage of company ownership interest (percentage) |  |  |  |  | 66.00%
TAME |  |  |  |  |
Related Party Transaction [Line Items] |  |  |  |  |
Percentage of company ownership interest (percentage) | 33.00% |  |  |  | 50.00%
Noncontrolling interest is attributed of all gains and losses of parent (percentage) | 33.00% |  |  |  |

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