Inventories

6 Months Ended

Jun. 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:

	June 30, 2021		December 31, 2020
Raw materials	$	17,833	$	16,570
Supplies and service parts	25,073		24,061
Finished products	30,267		30,849
Inventory at FIFO cost	73,173		71,480
Excess of FIFO cost over LIFO cost	(5,635)		(5,635)
Total inventory, net	$	67,538	$	65,845