Inventory

9 Months Ended

Sep. 30, 2022

Inventory Disclosure [Abstract]

Inventory

(3) Inventory

Inventories are stated at the lower of cost or net realizable value. We apply net realizable value and obsolescence to the gross value of inventory. Cost is determined using the first-in, first-out or weighted-average cost methods for finished goods and work-in-process. Supplies and consumables consist principally of products used in the services provided to our customers. The components of inventory balances are as follows (in thousands):

	September 30, 2022		December 31, 2021
Finished goods	$	36,838	$	26,187
Raw materials		9,562		9,753
Work-in-process		5,398		4,253
Supplies and consumables		18,164		20,410
Total	$	69,962	$	60,603