Inventories (Tables)

12 Months Ended

Dec. 31, 2020

Inventory, Net [Abstract]

Schedule of Major Classes of Inventories

	December 31,
(in thousands)	2020		2019
Grain and other agricultural products (a)	$	1,025,809	$	907,482
Frac sand and propane	12,477		15,438
Ethanol and co-products (b)	114,895		95,432
Plant nutrients and cob products	139,885		146,164
Railcar repair parts	7,627		6,020
	$	1,300,693	$	1,170,536

(a) Includes RMI of $972.8 million and $852.6 million at December 31, 2020 and December 31, 2019, respectively.

(b) Includes RMI of $10.4 million and $10.6 million at December 31, 2020 and December 31, 2019, respectively.