XML 22 R9.htm IDEA: XBRL DOCUMENT v3.4.0.3
Inventory
3 Months Ended
Mar. 31, 2016
Inventory Disclosure [Abstract]  
Inventory
Inventory
Equipment and materials consist primarily of proppant, chemicals, tubular goods, well equipment to be used in future drilling or repair operations, well fracturing equipment, and equipment to be used in the natural gas processing plant that is under construction. Crude oil inventory includes oil in tank and linefill. Inventory is stated at the lower of cost or market value with cost determined on an average cost method. Inventory consists of the following:
 
March 31, 2016
 
December 31, 2015
 
(In thousands)
Equipment and materials
$
4,729

 
$
4,920

Crude oil inventory
5,994

 
6,152

Total inventory
$
10,723

 
$
11,072