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Property, Plant and Equipment (Details) - USD ($) $ in Thousands	Sep. 30, 2021	Dec. 31, 2020
Property, Plant and Equipment [Abstract]
Proved oil and gas properties	$ 731,292	$ 770,117
Less: Accumulated depreciation, depletion and amortization	(70,343)	(12,403)
Proved oil and gas properties, net	660,949	757,714
Unproved oil and gas properties	2,293	40,211
Other property and equipment	962,174	935,950
Less: Accumulated depreciation	(42,572)	(5,088)
Other property and equipment, net	919,602	930,862
Total property, plant and equipment, net	$ 1,582,844	$ 1,728,787

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Oil and Gas properties with proved reserves under the successful effort method, net of accumulated depreciation, depletion, amortization and impairment.

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Amount of accumulated depreciation, depletion and amortization of oil and gas property carried under the successful effort method. Oil and gas property include, but not limited to, the entity's wells and related equipment and facilities.

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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.

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