XML 38 R61.htm IDEA: XBRL DOCUMENT v2.4.0.8
Property, Plant and Equipment (Details) (USD $)
In Thousands, unless otherwise specified
Mar. 31, 2014
Dec. 31, 2013
Oil and natural gas properties    
Proved(1) $ 10,443,534 [1] $ 10,972,816 [1]
Unproved 292,459 531,606
Total oil and natural gas properties 10,735,993 11,504,422
Less: accumulated depreciation, depletion and impairment (6,043,109) (5,762,969)
Net oil and natural gas properties capitalized costs 4,692,884 5,741,453
Land 18,404 18,423
Non-oil and natural gas equipment(2) 602,706 [2] 600,603 [2]
Buildings and structures(3) 237,578 [3] 233,405 [3]
Total 858,688 852,431
Less accumulated depreciation and amortization (299,346) (286,209)
Other property, plant and equipment, net 559,342 566,222
Total property, plant and equipment, net $ 5,252,226 $ 6,307,675
[1] Includes cumulative capitalized interest of approximately $25.9 million and $23.4 million at March 31, 2014 and December 31, 2013, respectively.
[2] Includes cumulative capitalized interest of approximately $4.3 million at both March 31, 2014 and December 31, 2013.
[3] Includes cumulative capitalized interest of approximately $13.4 million and $12.0 million at March 31, 2014 and December 31, 2013, respectively.