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Exploration Expense (Tables)
9 Months Ended
Sep. 30, 2021
Extractive Industries [Abstract]  
Schedule of exploration expense
A summary of our exploration expense is as follows:
SuccessorPredecessor
Three Months Ended
September 30, 2021
Three Months Ended
September 30, 2020
Impairments of unproved properties$$
Geological and geophysical expense and other
Exploration expense
$$
SuccessorPredecessor
Period from February 10, 2021 through September 30, 2021Period from January 1, 2021 through February 9, 2021Nine Months Ended
September 30, 2020
Impairments of unproved properties$$$402 
Dry hole expense— — 
Geological and geophysical expense and other— 
Exploration expense
$$$417