Inventories

Inventories are stated at the lower of cost or net realizable value. Cost is determined on the last-in, first-out (LIFO) basis for most U.S. inventories and the first-in, first-out (FIFO) basis for most non-U.S. inventories. Inventories at September 30, 2018 and December 31, 2017 consisted of the following:



	September 30, 2018			December 31, 2017
Raw materials	$	11,998		$	11,767
Supplies and service parts	22,213			21,475
Finished products	16,993			13,261
Inventory at FIFO cost	51,204			46,503
Excess of FIFO cost over LIFO cost	(3,005		)	(5,734		)
Total inventory, net	$	48,199		$	40,769