(7)Inventory and Other Current Assets

Inventory and other current assets includes approximately $164.0 million and $162.9 million of inventory as of September 30, 2014 and December 31, 2013, 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):



	September 30, 2014		December 31, 2013
Finished goods	$	66,340	$	65,621
Raw materials		33,281		20,764
Work-in-process		18,445		20,064
Supplies and consumables		45,936		56,470
Total	$	164,002	$	162,919

As of December 31, 2013, inventory and other current assets also included approximately $8.8 million of available-for-sale securities recorded at fair value. These available-for-sale securities consisted of approximately 1.4 million shares of SandRidge Energy, Inc. (SandRidge) common stock held by the Company. During the second quarter of 2014, the Company sold all of the remaining shares of SandRidge common stock for approximately $10.6 million. In connection with the sale, the Company reversed approximately $1.2 million of previously recorded unrealized losses, of which approximately $1.8 million was reclassified out of accumulated other comprehensive loss, net of tax benefit of approximately $0.6 million. During the nine months ended September 30, 2013, the Company recorded an unrealized loss related to the fair value of these securities of approximately $0.7 million, of which approximately $0.5 million was reported within accumulated other comprehensive loss, net of tax expense of approximately $0.2 million.