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Supplementary Information - Reserve Quantity Information (Detail)
 12 Months Ended
Dec. 31, 2022
MBbls
MMcf
Dec. 31, 2021
MBbls
MMcf
Oil [Member]    
Proved Developed Reserves:    
Beginning of year 5,386 2,684
Extensions, discoveries and improved recovery 99 69
Revisions of previous estimates (375) 1,639
Converted from undeveloped reserves 0 1,747
Reserves sold (28) (15)
Reserve purchased   0
Production (939) (738)
End of year 4,143 5,386
Proved Undeveloped Reserves:    
Beginning of year 0 1,784
Extensions, discoveries and improved recovery 3,028 (61)
Revisions of previous estimates 0 31
Converted to developed reserves 0 (1,747)
Reserves Sold 0 (7)
End of year 3,028 0
Total Proved Reserves at the End of the Year 7,171 5,386
NGLs [Member]    
Proved Developed Reserves:    
Beginning of year 2,882 2,258
Extensions, discoveries and improved recovery 74 1
Revisions of previous estimates (37) 813
Converted from undeveloped reserves 0 231
Reserves sold (5) (5)
Reserve purchased   0
Production (417) (416)
End of year 2,497 2,882
Proved Undeveloped Reserves:    
Beginning of year 0 787
Extensions, discoveries and improved recovery 1,833 (557)
Revisions of previous estimates 0 4
Converted to developed reserves 0 (231)
Reserves Sold 0 (4)
End of year 1,833 0
Total Proved Reserves at the End of the Year 4,330 2,882
Gas [Member]    
Proved Developed Reserves:    
Beginning of year | MMcf 23,902 13,633
Extensions, discoveries and improved recovery | MMcf 464 628
Revisions of previous estimates | MMcf 1,309 11,836
Converted from undeveloped reserves | MMcf 0 1,067
Reserves sold | MMcf (73) (26)
Reserve purchased | MMcf   0
Production | MMcf (3,325) (3,236)
End of year | MMcf 22,277 23,902
Proved Undeveloped Reserves:    
Beginning of year | MMcf 0 3,897
Extensions, discoveries and improved recovery | MMcf 9,030 (2,726)
Revisions of previous estimates | MMcf 0 386
Converted to developed reserves | MMcf 0 (1,067)
Reserves Sold | MMcf 0 (489)
End of year | MMcf 9,030 0
Total Proved Reserves at the End of the Year | MMcf 31,307 23,902