Quarterly report pursuant to Section 13 or 15(d)

Summary of Property and Equipment (Detail)

v3.8.0.1
Summary of Property and Equipment (Detail)
$ in Thousands
 9 Months Ended
Sep. 30, 2017
USD ($)
$ / bbl
Dec. 31, 2016
USD ($)
Sep. 30, 2016
$ / bbl
Sep. 12, 2016
$ / bbl
Property, Plant and Equipment [Abstract]        
Proved Oil and Gas Property, Full Cost Method $ 369,384 $ 251,083    
Unproved Oil and Gas Property, Full Cost Method 147,594 4,719    
Oil and Gas Property, Full Cost Method, Gross 516,978 255,802    
Other property and equipment 12,484 3,575    
Total properties and equipment 529,462 259,377    
Accumulated depreciation, depletion and amortization (43,402) (11,904)    
Property and equipment, net (successful efforts method) 486,060 247,473    
Unproved Oil and Gas Property excluded 147,600 $ 4,700    
Undeveloped Leasehold Costs Transferred 1,900      
Capitalized Costs, Proved Properties 1,600      
Interest Costs Capitalized $ 100      
Successor [Member]        
Property, Plant and Equipment [Line Items]        
Amortization Expense Per Physical Unit of Production | $ / bbl 11.93   11.09  
Predecessor [Member]        
Property, Plant and Equipment [Line Items]        
Amortization Expense Per Physical Unit of Production | $ / bbl       10.04