Related Party Transactions (Details) (USD $) In Thousands, unless otherwise specified	Mar. 31, 2015		Dec. 31, 2014		Mar. 31, 2014
Equity Method Investment Companys Investment Balance In Each Equity Method Investees By Entity [Abstract]
Equity method investments	$ 222,082		$ 226,857		$ 232,396
The Andersons Albion Ethanol LLC
Equity Method Investment Companys Investment Balance In Each Equity Method Investees By Entity [Abstract]
Equity method investments	28,726		27,824		31,867
The Andersons Clymers Ethanol LLC
Equity Method Investment Companys Investment Balance In Each Equity Method Investees By Entity [Abstract]
Equity method investments	36,063		37,624		40,412
The Andersons Marathon Ethanol LLC
Equity Method Investment Companys Investment Balance In Each Equity Method Investees By Entity [Abstract]
Equity method investments	31,869		31,537		45,946
Lansing Trade Group LLC
Equity Method Investment Companys Investment Balance In Each Equity Method Investees By Entity [Abstract]
Equity method investments	78,594		78,696		60,837
Thompsons Limited
Equity Method Investment Companys Investment Balance In Each Equity Method Investees By Entity [Abstract]
Equity method investments	44,224	[1]	48,455	[1]	49,520	[1]
Other
Equity Method Investment Companys Investment Balance In Each Equity Method Investees By Entity [Abstract]
Equity method investments	$ 2,606		$ 2,721		$ 3,814

[1] Thompsons Limited and related U.S. operating company held by joint ventures