Inventory and Other Current Assets

6 Months Ended

Jun. 30, 2015

Inventory and Other Current Assets [Abstract]

(6)Inventory and Other Current Assets

Inventory and other current assets includes approximately $174.1 million and $165.6 million of inventory as of June 30, 2015 and December 31, 2014, respectively. Inventories are stated at the lower of cost or market. 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 our services provided to customers. The components of the inventory balances are as follows (in thousands):



	June 30, 2015		December 31, 2014
Finished goods	$	76,435	$	72,788
Raw materials		26,366		29,718
Work-in-process		23,439		20,317
Supplies and consumables		47,857		42,739
Total	$	174,097	$	165,562