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Related Party Transactions (Income (Loss) Earned from Company's Equity Method Investments) (Details) - USD ($) $ in Thousands | 3 Months Ended | 6 Months Ended |
--- | --- | --- | ---
Jun. 30, 2019 | Jun. 30, 2018 | Jun. 30, 2019 | Jun. 30, 2018 | Dec. 31, 2018
Income Earned From Companys Equity Method Investments By Entity [Abstract] |  |  |  |  |  |
Income earned from Company's equity method investees |  | $ (157) | $ 9,803 | $ 1,362 | $ 13,376 |
The Andersons Albion Ethanol LLC |  |  |  |  |  |
Income Earned From Companys Equity Method Investments By Entity [Abstract] |  |  |  |  |  |
Percentage of company ownership interest |  | 55.00% |  | 55.00% |  |
Income earned from Company's equity method investees |  | $ 120 | 1,329 | $ 379 | 2,450 |
The Andersons Clymers Ethanol LLC |  |  |  |  |  |
Income Earned From Companys Equity Method Investments By Entity [Abstract] |  |  |  |  |  |
Percentage of company ownership interest |  | 39.00% |  | 39.00% |  |
Income earned from Company's equity method investees |  | $ 694 | 1,236 | $ 1,276 | 1,745 |
The Andersons Marathon Ethanol LLC |  |  |  |  |  |
Income Earned From Companys Equity Method Investments By Entity [Abstract] |  |  |  |  |  |
Percentage of company ownership interest |  | 33.00% |  | 33.00% |  |
Income earned from Company's equity method investees |  | $ 644 | 1,728 | $ 1,453 | 1,684 |
Lansing Trade Group LLC |  |  |  |  |  |
Income Earned From Companys Equity Method Investments By Entity [Abstract] |  |  |  |  |  |
Percentage of company ownership interest |  |  |  |  |  | 32.50%
Income earned from Company's equity method investees | [1] | 0 | 3,591 | $ 0 | 6,175 |
Equity method investee, ownership percentage after acquisition | [1] |  |  | 100.00% |  |
Thompsons Limited |  |  |  |  |  |
Income Earned From Companys Equity Method Investments By Entity [Abstract] |  |  |  |  |  |
Income earned from Company's equity method investees | [1] | $ 0 | 1,980 | $ 0 | 1,311 |
Equity method investee, ownership percentage after acquisition | [1] |  |  | 100.00% |  |
Providence Grain Group Inc. |  |  |  |  |  |
Income Earned From Companys Equity Method Investments By Entity [Abstract] |  |  |  |  |  |
Percentage of company ownership interest |  | 39.00% |  | 39.00% |  |
Income earned from Company's equity method investees |  | $ (1,719) | 0 | $ (1,844) | 0 |
Other |  |  |  |  |  |
Income Earned From Companys Equity Method Investments By Entity [Abstract] |  |  |  |  |  |
Income earned from Company's equity method investees |  | $ 104 | $ (61) | $ 98 | $ 11 |
Other | Minimum |  |  |  |  |  |
Income Earned From Companys Equity Method Investments By Entity [Abstract] |  |  |  |  |  |
Percentage of company ownership interest |  | 5.00% |  | 5.00% |  |
Other | Maximum |  |  |  |  |  |
Income Earned From Companys Equity Method Investments By Entity [Abstract] |  |  |  |  |  |
Percentage of company ownership interest |  | 51000.00% |  | 51000.00% |  |
[1] | The Company previously owned approximately 32.5% of LTG. Effective January 1, 2019, the company purchased the remaining equity of LTG. The transaction results in the consolidation of Thompsons Limited and related entities, which LTG and the Company had equally owned.

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