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Financial Instruments - Effect of Derivative Instruments on Consolidated Statements of Operations (Detail) - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2022	Jun. 30, 2021
Derivative Instruments, Gain (Loss) [Line Items]
Amount of gain/loss recognized in income	$ (13,913)	$ (6,681)
Derivatives Not Designated as Cash-Flow Hedging Instruments [Member] | Natural Gas Commodity Contracts [Member] | Unrealized (loss) on derivative instruments, net
Derivative Instruments, Gain (Loss) [Line Items]
Amount of gain/loss recognized in income	(966)	(1,085)
Derivatives Not Designated as Cash-Flow Hedging Instruments [Member] | Natural Gas Commodity Contracts [Member] | Realized (loss) on derivative instruments, net
Derivative Instruments, Gain (Loss) [Line Items]
Amount of gain/loss recognized in income	(1,986)	(277)
Derivatives Not Designated as Cash-Flow Hedging Instruments [Member] | Crude Oil Commodity Contracts [Member] | Unrealized (loss) on derivative instruments, net
Derivative Instruments, Gain (Loss) [Line Items]
Amount of gain/loss recognized in income	(3,240)	(4,883)
Derivatives Not Designated as Cash-Flow Hedging Instruments [Member] | Crude Oil Commodity Contracts [Member] | Realized (loss) gain on derivative instruments, net
Derivative Instruments, Gain (Loss) [Line Items]
Amount of gain/loss recognized in income	$ (7,721)	$ (636)

X

- Definition

Amount of increase (decrease) in the fair value of derivatives recognized in the income statement.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 815
-SubTopic 10
-Section 50
-Paragraph 4A
-Subparagraph (b)(1)
-URI https://asc.fasb.org/extlink&oid=125515794&loc=SL5618551-113959

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