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Related Party Transactions (Company's Investment Balance in Equity Method Investees) (Details) - USD ($) $ in Thousands | Sep. 30, 2018 | Dec. 31, 2017 | Sep. 30, 2017
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Equity Method Investment Companys Investment Balance In Each Equity Method Investees By Entity [Abstract] |  |  |  |
Equity method investments |  | $ 240,350 | $ 223,239 | $ 215,031
The Andersons Albion Ethanol LLC |  |  |  |
Equity Method Investment Companys Investment Balance In Each Equity Method Investees By Entity [Abstract] |  |  |  |
Equity method investments |  | 49,882 | 45,024 | 42,302
The Andersons Clymers Ethanol LLC |  |  |  |
Equity Method Investment Companys Investment Balance In Each Equity Method Investees By Entity [Abstract] |  |  |  |
Equity method investments |  | 22,589 | 19,830 | 17,837
The Andersons Marathon Ethanol LLC |  |  |  |
Equity Method Investment Companys Investment Balance In Each Equity Method Investees By Entity [Abstract] |  |  |  |
Equity method investments |  | 15,373 | 12,660 | 12,390
Lansing Trade Group LLC |  |  |  |
Equity Method Investment Companys Investment Balance In Each Equity Method Investees By Entity [Abstract] |  |  |  |
Equity method investments |  | 99,904 | 93,088 | 89,541
Thompsons Limited |  |  |  |
Equity Method Investment Companys Investment Balance In Each Equity Method Investees By Entity [Abstract] |  |  |  |
Equity method investments | [1] | 50,280 | 50,198 | 50,399
Other |  |  |  |
Equity Method Investment Companys Investment Balance In Each Equity Method Investees By Entity [Abstract] |  |  |  |
Equity method investments |  | $ 2,322 | $ 2,439 | $ 2,562
[1] | Thompsons Limited and related U.S. operating company held by joint ventures

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- Definition Equity method investment company's investment balance in each equity method investees by entity. + References No definition available. + Details
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- Definition This item represents the carrying amount on the entity's balance sheet of its investment in common stock of an equity method investee. This is not an indicator of the fair value of the investment, rather it is the initial cost adjusted for the entity's share of earnings and losses of the investee, adjusted for any distributions (dividends) and other than temporary impairment (OTTI) losses recognized. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 323 -SubTopic 10 -Section 45 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=66022249&loc=d3e33749-111570 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.12) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 + Details
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