Natural Gas and Oil Exploration, Development and Production Activities - Natural Gas and Oil Exploration, Development and Production Activities (Detail) - USD ($) $ in Thousands |
9 Months Ended | 12 Months Ended | |||||
|---|---|---|---|---|---|---|---|
Sep. 30, 2026 |
Sep. 30, 2025 |
Dec. 31, 2025 |
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| Acquisitions: | |||||||
| Acreage purchases | [1] | $ 17,554 | $ 51,802 | ||||
| Development | [1] | 500,338 | 601,326 | ||||
| Pipeline and facilities: | |||||||
| Development | [1] | 3,566 | 8,860 | ||||
| Subtotal | [1] | 539,975 | 698,890 | ||||
| Asset retirement obligations | 2,229 | [1] | $ 3,007 | 8,367 | [1] | ||
| Total costs incurred | [1] | 542,204 | 707,257 | ||||
| Location, Statement of Income, Balance [Axis]: us-gaap:ExplorationExpense | |||||||
| Exploration: | |||||||
| Drilling | [1] | 36 | 6,723 | ||||
| Expense | [1] | 17,365 | 28,824 | ||||
| Stock-based compensation expense | [1] | $ 1,116 | $ 1,355 | ||||
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| X | ||||||||||
- Definition Amount of costs incurred related to oil and gas property acquisition, exploration and development activities, including capitalized costs and costs charged to expense subtotal, prior to impact of asset retirement obligation and discontinued operations. No definition available.
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- Definition Cost incurred transportation and field equipment costs. No definition available.
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- Definition Increase (decrease) in asset retirement obligations costs incurred. No definition available.
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- Definition Pipeline and facilities. No definition available.
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| X | ||||||||||
- Definition Results of operations exploration drilling. No definition available.
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| X | ||||||||||
- Definition Amount of expense for award under share-based payment arrangement. Excludes amount capitalized. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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| X | ||||||||||
- Definition Amount of acquisition cost incurred for property with proved and unproved reserves in oil- and gas-producing activities. Includes capitalized cost and cost charged to expense. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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| X | ||||||||||
- References No definition available.
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| X | ||||||||||
- Definition Amount of development cost incurred in oil- and gas-producing activities. Includes capitalized cost and cost charged to expense. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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| X | ||||||||||
- Definition Amount of property acquisition, exploration, and development costs incurred in oil- and gas-producing activities. Includes capitalized cost and cost charged to expense. Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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| X | ||||||||||
- References No definition available.
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| X | ||||||||||
- Definition Amount of exploration cost charged to expense in oil- and gas-producing activities. Includes, but is not limited to, geological, geophysical, and dry hole costs. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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| X | ||||||||||
- Details
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