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Summary of Significant Accounting Policies Summary (Tables)
 12 Months Ended
Dec. 31, 2017
Accounting Policies [Abstract]  
Schedules of Concentration of Risk The Company had sales exceeding 10% of total revenues to the following oil and natural gas purchasers (in thousands):
 
Sales
 
% of Revenue
December 31, 2017 - Successor
 
 
 
Targa Pipeline Mid-Continent West OK LLC
$
144,583

 
40.5
%
Plains Marketing, L.P.
$
117,927

 
33.0
%
 
 
 
 
Period from October 2, 2016 through December 31, 2016 - Successor
 
 
 
Targa Pipeline Mid-Continent West OK LLC
$
35,845

 
36.4
%
Plains Marketing, L.P.
$
32,022

 
32.5
%
 
 
 
 
 
 
 
 
Period from January 1, 2016 through October 1, 2016 - Predecessor
 
 
 
Plains Marketing, L.P.
$
110,370

 
37.6
%
Targa Pipeline Mid-Continent West OK LLC
$
108,238

 
36.8
%
 
 
 
 
December 31, 2015 - Predecessor
 
 
 
Plains Marketing, L.P.
$
318,018

 
41.4
%
Targa Pipeline Mid-Continent West OK LLC
$
231,649

 
30.1
%