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Derivatives, Hedges and Financial Instruments - Additional Information (Detail) $ in Thousands	6 Months Ended	12 Months Ended
	Jun. 30, 2023 USD ($) MMBTU	Dec. 31, 2022 USD ($) MMBTU
Derivative Instruments And Hedging Activities Disclosures [Line Items]
Financial instruments with fair values | $	$ 0	$ 0
Natural Gas Purchase Commitments [Member]
Derivative Instruments And Hedging Activities Disclosures [Line Items]
Natural gas purchase commitments volume	14,200,000
Natural Gas Purchase Commitments [Member] | Level 2 [Member]
Derivative Instruments And Hedging Activities Disclosures [Line Items]
Natural gas purchase commitments volume	0	0

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- Definition

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- Definition

Natural gas purchase commitment volume.

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- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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