Summary of Significant Accounting Policies - Additional Information (Detail) - USD ($)	4 Months Ended	8 Months Ended	12 Months Ended
	May 04, 2017	Dec. 31, 2017	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Summary Of Significant Accounting Policies [Line Items]
Allowance for doubtful accounts			$ 1,500,000	$ 1,200,000
Capitalized exploratory drilling costs pending evaluation			0	0
Amortization expense including write-off of debt issuance costs		$ 2,100,000	1,200,000	2,500,000
Impairment expense for proved/unproved properties		0	2,246,000	0
Capitalized interest		400,000	$ 200,000	$ 500,000
Chance of tax benefit likely to be realized			greater than 50%
Federal corporate tax rate			21.00%	21.00%	35.00%
Tax cuts and jobs act of 2017, limitations on NOLs percentage of taxable income			80.00%		80.00%
Customer Concentration Risk [Member] | Revenues [Member]
Summary Of Significant Accounting Policies [Line Items]
Percentage of total revenue			10.00%
Predecessor [Member]
Summary Of Significant Accounting Policies [Line Items]
Amortization expense including write-off of debt issuance costs	$ 0
Impairment expense for proved/unproved properties	0
Capitalized interest	0
Proved Developed And Producing Oil And Gas Properties
Summary Of Significant Accounting Policies [Line Items]
Impairment expense for proved/unproved properties		$ 0	$ 0	$ 0
Proved Developed And Producing Oil And Gas Properties | Predecessor [Member]
Summary Of Significant Accounting Policies [Line Items]
Impairment expense for proved/unproved properties	$ 0
Unproved Oil and Natural Gas Properties [Member]
Summary Of Significant Accounting Policies [Line Items]
Impairment expense for unproved leasehold costs			$ 2,200,000
Maximum [Member]
Summary Of Significant Accounting Policies [Line Items]
Percentage of voting shares to be received by voting share holders			50.00%
Maximum [Member] | Predecessor [Member]
Summary Of Significant Accounting Policies [Line Items]
Percentage of voting shares to be received by voting share holders	50.00%
Maximum [Member] | Other Property & Equipment [Member]
Summary Of Significant Accounting Policies [Line Items]
Estimated useful lives			7 years
Maximum [Member] | Support Equipment and Facilities [Member]
Summary Of Significant Accounting Policies [Line Items]
Estimated useful lives			24 years
Minimum [Member] | Other Property & Equipment [Member]
Summary Of Significant Accounting Policies [Line Items]
Estimated useful lives			3 years
Minimum [Member] | Support Equipment and Facilities [Member]
Summary Of Significant Accounting Policies [Line Items]
Estimated useful lives			12 years