Inventory

Crude oil inventory includes oil in tank and linefill. Equipment and materials consist primarily of proppant, chemicals, tubular goods, well equipment to be used in future drilling or repair operations and well fracturing equipment. Inventory is stated at the lower of cost or market value with cost determined on an average cost method. Inventory consists of the following:



	September 30, 2016		December 31, 2015
	(In thousands)
Crude oil inventory	$	5,344	$	6,152
Equipment and materials	3,169		4,920
Total inventory	$	8,513	$	11,072