Inventories

9 Months Ended

Sep. 30, 2021

Inventory Disclosure [Abstract]

Inventories

Inventories

Inventories are stated at the lower of cost or market. Cost is determined on the last-in, first-out (LIFO) basis, the first-in, first-out (FIFO) basis or average cost. Inventories consisted of the following:

	September 30, 2021		December 31, 2020
Raw materials	$	19,289	$	16,570
Supplies and service parts	26,162		24,061
Finished products	29,680		30,849
Inventory at FIFO cost	75,131		71,480
Excess of FIFO cost over LIFO cost	(5,635)		(5,635)
Total inventory, net	$	69,496	$	65,845