Disclosures about Oil and Natural Gas Activities (Unaudited) - Summary of Changes in Quantities of Proved Reserves (Detail) - Predecessor
 12 Months Ended
Dec. 31, 2016
MBoe
MBbls
MMcf
Dec. 31, 2015
MBoe
MBbls
MMcf
Dec. 31, 2014
MBoe
MBbls
MMcf
Jan. 01, 2014
MBoe
MBbls
MMcf
Reserve Quantities [Line Items]        
Balance at beginning of period | MBoe 155,541 159,393 158,475  
Purchase of minerals in place | MBoe   271 474  
Sales of minerals in place | MBoe   (2,951) (23,761)  
Extensions and discoveries | MBoe 8,550 7,040 25,541  
Revisions | MBoe [1] (23,864) (34,426) (3,608)  
Improved recoveries | MBoe   36,414 [2] 13,254  
Production | MBoe (8,926) (10,200) (10,982)  
Balance at end of period | MBoe 131,301 155,541 159,393  
Proved developed reserves | MBoe 56,076 71,524 93,027 100,664
Proved undeveloped reserves | MBoe 75,225 84,017 66,366 57,811
Natural Gas Liquids [Member]        
Reserve Quantities [Line Items]        
Balance at beginning of period 12,071 16,853 15,175  
Purchase of minerals in place   46 55  
Sales of minerals in place   (117) (1,959)  
Extensions and discoveries 1,499 1,096 3,405  
Revisions [1] (57) (4,257) 1,741  
Improved recoveries   0 [2] 0  
Production (1,408) (1,550) (1,564)  
Balance at end of period 12,105 12,071 16,853  
Proved developed reserves 9,352 9,169 11,787 11,484
Proved undeveloped reserves 2,753 2,902 5,066 3,691
Natural Gas [Member]        
Reserve Quantities [Line Items]        
Balance at beginning of period | MMcf 178,218 247,756 302,922  
Purchase of minerals in place | MMcf   1,120 859  
Sales of minerals in place | MMcf   (3,656) (79,579)  
Extensions and discoveries | MMcf 18,085 13,759 56,159  
Revisions | MMcf [1] (44,965) (61,973) (11,957)  
Improved recoveries | MMcf   0 [2] 0  
Production | MMcf (15,889) (18,788) (20,648)  
Balance at end of period | MMcf 135,449 178,218 247,756  
Proved developed reserves | MMcf 108,800 132,323 158,265 196,920
Proved undeveloped reserves | MMcf 26,649 45,895 89,491 106,002
Oil [Member]        
Reserve Quantities [Line Items]        
Balance at beginning of period 113,766 101,247 92,813  
Purchase of minerals in place   38 276  
Sales of minerals in place   (2,225) (8,539)  
Extensions and discoveries 4,037 3,651 12,776  
Revisions [1] (16,312) (19,840) (3,356)  
Improved recoveries   36,414 [2] 13,254  
Production (4,870) (5,519) (5,977)  
Balance at end of period 96,621 113,766 101,247  
Proved developed reserves 28,590 40,300 54,862 56,360
Proved undeveloped reserves 68,031 73,466 46,385 36,453
[1] The downward revision in our reserves during 2016 was primarily due to removing proved undeveloped reserves that are not expected to be developed within the five-year time frame mandated by the SEC, revision in the base water flood decline curve at our North Burbank Unit, and the decline in SEC pricing. The downward revision in our reserves during 2015 was primarily due to the decline in SEC pricing which resulted in future extraction of certain reserves being uneconomic. The downward revision in our reserves during 2014 was primarily due to removing proved undeveloped reserves that were not expected to be developed within five-years and a decline in the estimated sales margin on natural gas.
[2] Improved recoveries in 2015 resulted from the addition of reserves from remaining future phases of CO2 injection at our North Burbank EOR unit.