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Related Party Transactions (Income (Losses) of Company's Equity Method Investees) (Details) - USD ($) $ in Thousands | 3 Months Ended | 12 Months Ended |  |
--- | --- | --- | --- | ---
Dec. 31, 2019 | Dec. 31, 2019 | Dec. 31, 2018 | Dec. 31, 2017 | Sep. 30, 2019 | Jul. 31, 2013
Income Earned From Companys Equity Method Investments By Entity [Abstract] |  |  |  |  |  |
Income earned from Company's equity method investees |  | $ (7,359) | $ 27,141 | $ 16,723 |  |
Equity Method Investment, Other than Temporary Impairment | $ 5,000 |  |  |  |  |
The Andersons Albion Ethanol LLC (a) |  |  |  |  |  |
Income Earned From Companys Equity Method Investments By Entity [Abstract] |  |  |  |  |  |
Income earned from Company's equity method investees |  | (1,292) | 5,531 | 6,052 |  |
Percentage of company ownership interest (percentage) |  |  |  |  | 55.00% |
The Andersons Clymers Ethanol LLC (a) |  |  |  |  |  |
Income Earned From Companys Equity Method Investments By Entity [Abstract] |  |  |  |  |  |
Income earned from Company's equity method investees |  | (151) | 4,846 | 4,591 |  |
Percentage of company ownership interest (percentage) |  |  |  |  | 39.00% |
The Andersons Marathon Ethanol LLC (a) |  |  |  |  |  |
Income Earned From Companys Equity Method Investments By Entity [Abstract] |  |  |  |  |  |
Income earned from Company's equity method investees |  | $ 920 | 3,832 | 1,571 |  |
Percentage of company ownership interest (percentage) | 33.00% | 33.00% |  |  | 33.00% |
Lansing Trade Group, LLC (b) |  |  |  |  |  |
Income Earned From Companys Equity Method Investments By Entity [Abstract] |  |  |  |  |  |
Income earned from Company's equity method investees |  | $ 0 | $ 10,413 | 4,038 |  |
Percentage of company ownership interest (percentage) |  |  | 32.50% |  |  |
Thompsons Limited |  |  |  |  |  |
Income Earned From Companys Equity Method Investments By Entity [Abstract] |  |  |  |  |  |
Income earned from Company's equity method investees |  | 0 | $ 2,568 | 696 |  |
Percentage of company ownership interest (percentage) |  |  |  |  |  | 50.00%
Providence Grain |  |  |  |  |  |
Income Earned From Companys Equity Method Investments By Entity [Abstract] |  |  |  |  |  |
Income earned from Company's equity method investees |  | $ (7,411) | 0 | 0 |  |
Percentage of company ownership interest (percentage) | 37.80% | 37.80% |  |  |  |
Quadra Commodities S.A. |  |  |  |  |  |
Income Earned From Companys Equity Method Investments By Entity [Abstract] |  |  |  |  |  |
Income earned from Company's equity method investees |  | $ 910 | 0 | 0 |  |
Percentage of company ownership interest (percentage) |  |  |  |  | 17.70% |
Other |  |  |  |  |  |
Income Earned From Companys Equity Method Investments By Entity [Abstract] |  |  |  |  |  |
Income earned from Company's equity method investees |  | $ (335) | $ (49) | $ (225) |  |
Other | Minimum |  |  |  |  |  |
Income Earned From Companys Equity Method Investments By Entity [Abstract] |  |  |  |  |  |
Percentage of company ownership interest (percentage) |  |  |  |  | 5.00% |
Other | Maximum |  |  |  |  |  |
Income Earned From Companys Equity Method Investments By Entity [Abstract] |  |  |  |  |  |
Percentage of company ownership interest (percentage) |  |  |  |  | 52.00% |

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- Definition This item represents an other than temporary decline in value that has been recognized against an investment accounted for under the equity method of accounting. The excess of the carrying amount over the fair value of the investment represents the amount of the write down which is or was reflected in earnings. The written down value is a new cost basis with the adjusted value of the investment becoming its new carrying value subject to the equity accounting method. Evidence of a loss in value might include, but would not necessarily be limited to, absence of an ability to recover the carrying amount of the investment or inability of the investee to sustain an earnings capacity which would justify the carrying amount of the investment. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 323 -SubTopic 10 -Section 35 -Paragraph 32 -URI http://asc.fasb.org/extlink&oid=118954474&loc=d3e32787-111569 + Details
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