Inventories (Tables)

6 Months Ended

Jun. 30, 2020

Inventory, Net [Abstract]

Classes of inventories

Major classes of inventories are as follows:

(in thousands)	June 30, 2020		December 31, 2019		June 30, 2019
Grain and other agricultural products	$	452,339	$	907,482	$	603,318
Frac sand and propane	6,498		15,438		9,287
Ethanol and co-products	63,195		95,432		26,185
Plant nutrients and cob products	87,346		146,164		109,156
Railcar repair parts	6,945		6,020		5,695
Total Inventories	$	616,323	$	1,170,536	$	753,641