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Related Party Transactions (Income (Losses) of Company's Equity Method Investees) (Details) - USD ($) $ in Thousands | 12 Months Ended |
--- | --- | ---
Dec. 31, 2018 | Dec. 31, 2017 | Dec. 31, 2016 | Jul. 31, 2013
Income Earned From Companys Equity Method Investments By Entity [Abstract] |  |  |  |  |  |
Income earned from Company's equity method investees |  | $ 27,141 |  | $ 16,723 | $ 9,721 |
Reduction in ownership percentage (percentage) |  | 0.30% |  |  |  |
The Andersons Albion Ethanol LLC |  |  |  |  |  |
Income Earned From Companys Equity Method Investments By Entity [Abstract] |  |  |  |  |  |
Percentage of company ownership interest (percentage) |  | 55.00% |  |  |  |
Income earned from Company's equity method investees |  | $ 5,531 |  | 6,052 | 6,167 |
The Andersons Clymers Ethanol LLC |  |  |  |  |  |
Income Earned From Companys Equity Method Investments By Entity [Abstract] |  |  |  |  |  |
Percentage of company ownership interest (percentage) |  | 39.00% |  |  |  |
Income earned from Company's equity method investees |  | $ 4,846 |  | 4,591 | 6,486 |
The Andersons Marathon Ethanol LLC |  |  |  |  |  |
Income Earned From Companys Equity Method Investments By Entity [Abstract] |  |  |  |  |  |
Percentage of company ownership interest (percentage) |  | 33.00% |  |  |  |
Income earned from Company's equity method investees |  | $ 3,832 |  | 1,571 | 5,814 |
Lansing Trade Group, LLC |  |  |  |  |  |
Income Earned From Companys Equity Method Investments By Entity [Abstract] |  |  |  |  |  |
Percentage of company ownership interest (percentage) | [1] | 33.00% |  |  |  |
Income earned from Company's equity method investees | [1] | $ 10,413 |  | 4,038 | (9,935) |
Thompsons Limited |  |  |  |  |  |
Income Earned From Companys Equity Method Investments By Entity [Abstract] |  |  |  |  |  |
Percentage of company ownership interest (percentage) |  | 50.00% | [2] |  |  | 50.00%
Income earned from Company's equity method investees | [2] | $ 2,568 |  | 696 | 1,189 |
Other |  |  |  |  |  |
Income Earned From Companys Equity Method Investments By Entity [Abstract] |  |  |  |  |  |
Income earned from Company's equity method investees |  | $ (49) |  | $ (225) | $ 0 |
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) |  | 50.00% |  |  |  |
[1] | This does not consider restricted management units which, once vested, will reduce the ownership percentage by approximately 0.3%.
[2] | Thompsons Limited and related U.S. operating company held by joint ventures

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