Property and Equipment, Net (Schedule of Property and Equipment) (Details) - USD ($) $ in Thousands |
Dec. 31, 2020 |
Dec. 31, 2019 |
|---|---|---|
| Oil and natural gas properties, full cost accounting method | ||
| Evaluated properties | $ 7,894,513 | $ 7,203,482 |
| Accumulated depreciation, depletion, amortization and impairments | (5,538,803) | (2,520,488) |
| Evaluated properties, net | 2,355,710 | 4,682,994 |
| Unevaluated properties | ||
| Unevaluated leasehold and seismic costs | 1,532,304 | 1,843,725 |
| Capitalized interest | 200,946 | 142,399 |
| Capitalized Costs of Unproved Properties Excluded from Amortization, Cumulative, Total | 1,733,250 | 1,986,124 |
| Total oil and natural gas properties, net | 4,088,960 | 6,669,118 |
| Other property and equipment | 60,287 | 67,202 |
| Accumulated depreciation | (28,647) | (31,949) |
| Other property and equipment, net | $ 31,640 | $ 35,253 |
| X | ||||||||||
- Definition Costs Not Subject To Amortization, Capitalized Interest No definition available.
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| X | ||||||||||
- Definition Costs Not Subject To Amortization, Unevaluated Leaseholds And Seismic Costs No definition available.
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- Definition Oil and gas properties, full-cost accounting method: No definition available.
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- Definition The Net Carrying amounts as of the balance sheet date of proved oil and gas properties based on full cost accounting. No definition available.
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| X | ||||||||||
- Definition Amount of accumulated depreciation, depletion and amortization for physical assets used in the normal conduct of business to produce goods and services. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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- Definition Amount of accumulated depreciation, depletion, amortization and valuation allowance relating to oil and gas producing activities. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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| X | ||||||||||
- Definition The sum of the capitalized costs incurred, as of the balance sheet date, of unproved properties excluded from amortization including acquisition costs, exploration costs, development costs, and production costs. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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- References No definition available.
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| X | ||||||||||
- Definition Capitalized costs of proved properties incurred for any combination mineral interests acquisitions; wells and related equipment; support equipment and facilities; and uncompleted wells and equipment and other costs not previously disclosed within this table. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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| X | ||||||||||
- Definition Amount after accumulated depreciation, depletion and amortization of physical assets used in the normal conduct of business to produce goods and services and not intended for resale. Examples include, but are not limited to, land, buildings, machinery and equipment, office equipment, and furniture and fixtures. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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| X | ||||||||||
- Definition Amount before accumulated depreciation, depletion and amortization of other physical assets used in the normal conduct of business to produce goods and services and not intended for resale. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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- Definition Amount after depreciation of long-lived, physical assets used to produce goods and services and not intended for resale, classified as other. No definition available.
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