Inventories (Tables)

3 Months Ended

Mar. 31, 2017

Inventory, Net [Abstract]

Classes of inventories

Major classes of inventories are as follows:

(in thousands)	March 31, 2017		December 31, 2016		March 31, 2016
Grain	$	443,870	$	495,139	$	450,414
Ethanol and co-products	15,549		10,887		11,895
Plant nutrients and cob products	165,584		150,259		207,109
Retail merchandise	11,082		20,678		27,792
Railcar repair parts	5,209		5,784		6,185
Other	—		—		57
	$	641,294	$	682,747	$	703,452