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Supplemental Information on Oil and Natural Gas Producing Activities (Unaudited) - Standardized Measure of Discounted Future Cash Flows (Unaudited) (Details) - USD ($)
$ in Thousands
Dec. 31, 2017
Dec. 31, 2016
Oct. 01, 2016
Dec. 31, 2015
Dec. 31, 2014
Successor          
Discounted Future Net Cash Flows Relating to Proved Oil and Gas Reserves [Line Items]          
Future cash inflows from production $ 4,621,615 $ 3,136,762      
Future production costs (1,837,852) (1,454,798)      
Future development costs (966,203) (665,516)      
Future income tax expenses (107) (142)      
Undiscounted future net cash flows 1,817,453 1,016,306      
10% annual discount (1,068,159) (577,942)      
Standardized measure of discounted future net cash flows $ 749,294 $ 438,364 $ 392,604    
Predecessor          
Discounted Future Net Cash Flows Relating to Proved Oil and Gas Reserves [Line Items]          
Future cash inflows from production       $ 6,387,944  
Future production costs       (2,731,542)  
Future development costs       (838,945)  
Future income tax expenses       (901)  
Undiscounted future net cash flows       2,816,556  
10% annual discount       (1,501,994)  
Standardized measure of discounted future net cash flows     $ 392,604 1,314,562 $ 4,087,752
Predecessor | Non-controlling Interest          
Discounted Future Net Cash Flows Relating to Proved Oil and Gas Reserves [Line Items]          
Standardized measure of discounted future net cash flows       $ 224,600