Annual report pursuant to Section 13 and 15(d)

Summary of Property and Equipment (Detail)

v3.6.0.2
Summary of Property and Equipment (Detail)
$ in Thousands
4 Months Ended 8 Months Ended
Dec. 31, 2016
USD ($)
$ / bbl
Sep. 12, 2016
USD ($)
$ / bbl
Dec. 31, 2015
USD ($)
$ / bbl
Dec. 31, 2014
$ / bbl
Property, Plant and Equipment [Line Items]        
Proved Oil and Gas Property, Full Cost Method $ 251,083      
Undeveloped Leasehold Costs Transferred $ 3,800      
Capitalized Costs, Proved Properties   $ 500    
Interest Costs Capitalized   $ 100    
Amortization Expense Per Physical Unit of Production | $ / bbl 11.20 10.04 42.22 37.85
Oil and gas properties:        
Proved     $ 2,678,415  
Unproved Oil and Gas Property, Full Cost Method $ 4,719      
Unproved 1 4,700   6,881  
Oil and Gas Property, Full Cost Method, Gross 255,802      
Total oil and gas properties     2,685,296  
Other property and equipment 3,575   31,365  
Total property and equipment 259,377   2,716,661  
Accumulated depreciation, depletion and amortization 1 (11,904)   (2,372,266)  
Property and equipment, net (successful efforts method) $ 247,473   $ 344,395