XML 41 R61.htm IDEA: XBRL DOCUMENT v3.3.0.814
Property, Plant and Equipment (Details) - USD ($)
$ in Thousands
Sep. 30, 2015
Dec. 31, 2014
Oil and natural gas properties    
Proved $ 12,302,551 $ 11,707,147
Unproved 260,657 290,596
Total oil and natural gas properties 12,563,208 11,997,743
Less: accumulated depreciation, depletion and impairment (10,235,369) (6,359,149)
Net oil and natural gas properties capitalized costs 2,327,839 5,638,594
Land 14,490 16,300
Non-oil and natural gas equipment 431,569 602,392
Buildings and structures 246,847 263,191
Total 692,906 881,883
Less accumulated depreciation and amortization (185,659) (305,420)
Other property, plant and equipment, net 507,247 576,463
Total property, plant and equipment, net $ 2,835,086 $ 6,215,057