Amount before accumulated depreciation of tangible personal property used to produce goods and services, including, but is not limited to, tools, dies and molds, computer and office equipment.

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Amount of accumulated depreciation, depletion, amortization and impairment of oil and gas property carried under the successful effort method.

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Oil and Gas properties, gross, carried under the successful effort method.

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Oil and gas properties net of accumulated depreciation, depletion, amortization, impairment, and abandonment, carried under the successful effort method.

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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.

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Fresh Start Accounting - Schedule of Fresh Start Adjustments to Property and Equipment, Net (Detail) - USD ($) $ in Thousands	Dec. 31, 2019	Dec. 31, 2018	May 04, 2017
Property and equipment, at cost:
Oil and natural gas properties, successful efforts method	$ 797,005	$ 598,331	$ 657,336
Support equipment and facilities	140,023	108,760
Other	8,045	6,625	6,007
Accumulated depreciation, depletion and impairment	$ (141,350)	$ (85,535)	0
Property and equipment, net			657,336
Predecessor [Member]
Property and equipment, at cost:
Oil and natural gas properties, successful efforts method			3,339,020
Other			15,420
Accumulated depreciation, depletion and impairment			(1,787,520)
Property and equipment, net			1,551,500
Support Equipment and Facilities [Member]
Property and equipment, at cost:
Support equipment and facilities			97,580
Support Equipment and Facilities [Member] \| Predecessor [Member]
Property and equipment, at cost:
Support equipment and facilities			199,463
Fresh Start Adjustments [Member]
Property and equipment, at cost:
Oil and natural gas properties, successful efforts method			(2,681,684)
Other			(9,413)
Accumulated depreciation, depletion and impairment			1,787,520
Property and equipment, net			(894,164)
Fresh Start Adjustments [Member] \| Support Equipment and Facilities [Member]
Property and equipment, at cost:
Support equipment and facilities			(101,883)
Proved Oil and Natural Gas Properties [Member]
Property and equipment, at cost:
Oil and natural gas properties, successful efforts method			509,061
Proved Oil and Natural Gas Properties [Member] \| Predecessor [Member]
Property and equipment, at cost:
Oil and natural gas properties, successful efforts method			3,124,137
Proved Oil and Natural Gas Properties [Member] \| Fresh Start Adjustments [Member]
Property and equipment, at cost:
Oil and natural gas properties, successful efforts method			(2,615,076)
Unproved Oil and Natural Gas Properties [Member]
Property and equipment, at cost:
Oil and natural gas properties, successful efforts method			44,688
Unproved Oil and Natural Gas Properties [Member] \| Predecessor [Member]
Property and equipment, at cost:
Oil and natural gas properties, successful efforts method			0
Unproved Oil and Natural Gas Properties [Member] \| Fresh Start Adjustments [Member]
Property and equipment, at cost:
Oil and natural gas properties, successful efforts method			$ 44,688