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Property, Plant and Equipment (Details) - USD ($)
$ in Thousands
Dec. 31, 2017
Dec. 31, 2016
Dec. 31, 2015
Successor      
Oil and natural gas properties, using full cost method of accounting      
Proved $ 1,056,806 $ 840,201  
Unproved 100,884 74,937  
Total oil and natural gas properties 1,157,690 915,138  
Less: accumulated depreciation, depletion and impairment (460,431) (353,030)  
Net oil and natural gas properties capitalized costs 697,259 562,108  
Property, Plant and Equipment, Net      
Total 241,867 259,713  
Less accumulated depreciation and amortization (15,886) (3,889)  
Other property, plant and equipment, net 225,981 255,824  
Total property, plant and equipment, net 923,240 817,932  
Successor | Land      
Property, Plant and Equipment, Net      
Total 4,500 5,100  
Successor | Electrical infrastructure      
Property, Plant and Equipment, Net      
Total 131,010 130,242  
Successor | Non-oil and natural gas equipment      
Property, Plant and Equipment, Net      
Total 26,809 35,768  
Successor | Buildings and structures      
Property, Plant and Equipment, Net      
Total $ 79,548 $ 88,603  
Predecessor      
Oil and natural gas properties, using full cost method of accounting      
Proved     $ 12,529,681
Unproved     363,149
Total oil and natural gas properties     12,892,830
Less: accumulated depreciation, depletion and impairment     (11,149,888)
Net oil and natural gas properties capitalized costs     $ 1,742,942