XML 85 R58.htm IDEA: XBRL DOCUMENT v3.10.0.1
Derivatives - Gains and Losses in Statement of Operations (Details) - USD ($)
$ in Thousands
2 Months Ended 10 Months Ended 12 Months Ended
Feb. 28, 2017
Dec. 31, 2017
Dec. 31, 2018
Dec. 31, 2016
Derivative [Line Items]        
Lease operating expenses   $ 0 $ 0  
Total gains (losses) on oil and natural gas derivatives   (66,900) 1,735  
Predecessor        
Derivative [Line Items]        
Lease operating expenses $ 0     $ (4,605)
Total gains (losses) on oil and natural gas derivatives 12,886     (20,386)
Oil derivatives        
Derivative [Line Items]        
Gains (losses) on derivatives   (66,900) (4,621)  
Oil derivatives | Predecessor        
Derivative [Line Items]        
Gains (losses) on derivatives 12,886     (15,781)
Natural gas derivatives        
Derivative [Line Items]        
Gains (losses) on derivatives   0 6,357  
Natural gas derivatives | Predecessor        
Derivative [Line Items]        
Gains (losses) on derivatives 0     0
Oil and natural gas derivatives        
Derivative [Line Items]        
Total gains (losses) on oil and natural gas derivatives   $ (66,900) $ (1,735)  
Oil and natural gas derivatives | Predecessor        
Derivative [Line Items]        
Total gains (losses) on oil and natural gas derivatives $ 12,886     $ (20,386)