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Supplementary Oil and Gas Information - Additional Information (Detail)
a in Thousands
Jun. 30, 2021
a
Wells
Disclosure of oil and gas producing activities [line items]  
Operated wells that had multiple completions, gross | Wells 131
Operated wells that had multiple completions, net | Wells 60
Expiring June 2022 [member]  
Disclosure of oil and gas producing activities [line items]  
Approximately acres of undeveloped acreage that will expire, gross 139
Approximately acres of undeveloped acreage that will expire, net 22
Expiring June 2023 [member]  
Disclosure of oil and gas producing activities [line items]  
Approximately acres of undeveloped acreage that will expire, gross 386
Approximately acres of undeveloped acreage that will expire, net 241
Expiring June 2024 [member]  
Disclosure of oil and gas producing activities [line items]  
Approximately acres of undeveloped acreage that will expire, gross 121
Approximately acres of undeveloped acreage that will expire, net 103