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Supplementary Oil and Gas Information - Additional Information (Detail) a in Thousands | Jun. 30, 2019 a Wells
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Disclosure of oil and gas producing activities [line items] |
Operated wells that had multiple completions, gross | Wells | 43
Operated wells that had multiple completions, net | Wells | 18
Expiring June 2019 [member] |
Disclosure of oil and gas producing activities [line items] |
Approximately acres of undeveloped acreage that will expire, gross | 126
Approximately acres of undeveloped acreage that will expire, net | 59
Expiring June 2020 [member] |
Disclosure of oil and gas producing activities [line items] |
Approximately acres of undeveloped acreage that will expire, gross | 1,612
Approximately acres of undeveloped acreage that will expire, net | 932
Expiring June 2021 [member] |
Disclosure of oil and gas producing activities [line items] |
Approximately acres of undeveloped acreage that will expire, gross | 1,257
Approximately acres of undeveloped acreage that will expire, net | 889

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