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Oil and Gas Producing Activities - Capitalized Costs Related to Oil and Natural Gas Property Acquisition Exploration and Development Activities (Detail) - USD ($) $ in Thousands	Dec. 31, 2021	Dec. 31, 2020
Proved properties:
Leasehold costs	$ 3,053,783	$ 3,010,760
Wells and related equipment and facilities	1,702,611	1,636,428
Accumulated depreciation depletion and amortization	(1,056,317)	(901,003)
Proved properties	3,700,077	3,746,185
Unproved properties	302,129	332,765
Capitalized costs, oil and gas producing activities, net, total	$ 4,002,206	$ 4,078,950

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Capitalized costs lease hold costs.

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Amount of accumulated depreciation, depletion, amortization and valuation allowance relating to oil and gas producing activities.

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Net amount of capitalized costs relating to oil and gas producing activities.

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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.

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Capitalized costs of unproved properties incurred for any combination mineral interests acquisitions and other costs not previously disclosed within this table.

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Capitalized costs which include those incurred to (1) to drill and equip those exploratory wells and exploratory-type stratigraphic test wells that have found proved reserves and (2) obtain access to proved reserves and provide facilities for extracting, treating, gathering, storing the oil and gas, including the drilling and equipping of development wells and development-type stratigraphic wells and service wells.

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