Inventories (Tables)

3 Months Ended

Mar. 31, 2020

Inventory, Net [Abstract]

Classes of inventories

Major classes of inventories are as follows:

(in thousands)	March 31, 2020		December 31, 2019		March 31, 2019
Grain and other agricultural products	$	750,281	$	907,482	$	812,361
Frac sand and propane	5,723		15,438		8,172
Ethanol and co-products	87,706		95,432		16,302
Plant nutrients and cob products	178,028		146,164		183,886
Railcar repair parts	6,338		6,020		5,744
Total Inventories	$	1,028,076	$	1,170,536	$	1,026,465