Earnings Per Share (Details) (USD $) In Thousands, except Share data, unless otherwise specified	3 Months Ended								12 Months Ended
	Dec. 31, 2014	Sep. 30, 2014	Jun. 30, 2014	Mar. 31, 2014	Dec. 31, 2013	Sep. 30, 2013	Jun. 30, 2013	Mar. 31, 2013	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Earnings Per Share [Abstract]
Net income attributable to The Andersons, Inc.	$ 25,892	$ 16,825	$ 44,301	$ 22,708	$ 30,661	$ 17,161	$ 29,539	$ 12,578	$ 109,726	$ 89,939	$ 79,480
Less: Distributed and undistributed earnings allocated to nonvested restricted stock									569	357	389
Earnings available to common shareholders									$ 109,157	$ 89,582	$ 79,091
Earnings per share – basic:
Weighted average shares outstanding – basic									28,367,000	27,986,000	27,784,000
Earnings per share-basic (in dollars per share)	$ 0.89	$ 0.59	$ 1.56	$ 0.80	$ 1.09	$ 0.61	$ 1.05	$ 0.45	$ 3.85	$ 3.20	$ 2.85
Earnings per share – diluted:
Weighted average shares outstanding – basic									28,367,000	27,986,000	27,784,000
Effect of dilutive awards (shares)									85,000	200,000	255,000
Weighted average shares outstanding – diluted									28,452,000	28,186,000	28,039,000
Earnings per share-diluted (in dollars per share)	$ 0.89	$ 0.59	$ 1.56	$ 0.80	$ 1.08	$ 0.61	$ 1.05	$ 0.45	$ 3.84	$ 3.18	$ 2.82
Earnings Per Share (Textual) [Abstract]
Antidilutive stock-based awards outstanding (shares)									0	0	0