Inventories (Tables)

3 Months Ended

Mar. 31, 2021

Inventory Disclosure [Abstract]

Inventory Components

Inventories consisted of the following:

	March 31, 2021		December 31, 2020
Raw materials	$	17,879	$	16,570
Supplies and service parts	25,749		24,061
Finished products	25,687		30,849
Inventory at FIFO cost	69,315		71,480
Excess of FIFO cost over LIFO cost	(5,635)		(5,635)
Total inventory, net	$	63,680	$	65,845