Earnings Per Share (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended								12 Months Ended
	Dec. 31, 2019	Sep. 30, 2019	Jun. 30, 2019	Mar. 31, 2019	Dec. 31, 2018	Sep. 30, 2018	Jun. 30, 2018	Mar. 31, 2018	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Earnings Per Share [Abstract]
Net income (loss) attributable to The Andersons, Inc.	$ 6,649	$ (4,237)	$ 29,888	$ (13,993)	$ 23,753	$ (2,098)	$ 21,529	$ (1,700)	$ 18,307	$ 41,484	$ 42,511
Less: Distributed and undistributed earnings allocated to non-vested restricted stock									0	0	1
Earnings available to common shareholders									$ 18,307	$ 41,484	$ 42,510
Earnings per share – basic:
Weighted average shares outstanding – basic (shares)									32,570	28,258	28,126
Earnings per share-basic (in dollars per share)	$ 0.20	$ (0.13)	$ 0.92	$ (0.43)	$ 0.84	$ (0.07)	$ 0.76	$ (0.06)	$ 0.56	$ 1.47	$ 1.51
Earnings per share – diluted:
Weighted average shares outstanding – basic (shares)									32,570	28,258	28,126
Effect of dilutive awards (shares)									526	194	170
Weighted average shares outstanding – diluted									33,096	28,452	28,296
Earnings per share-diluted (in dollars per share)	$ 0.20	$ (0.13)	$ 0.91	$ (0.43)	$ 0.83	$ (0.07)	$ 0.76	$ (0.06)	$ 0.55	$ 1.46	$ 1.50
Earnings Per Share (Textual) [Abstract]
Antidilutive stock-based awards outstanding (shares)									88	13	22