Derivatives, Hedges and Financial Instruments - Additional Information (Detail) $ in Thousands	12 Months Ended
	Dec. 31, 2023 USD ($) MMBTU	Dec. 31, 2021 USD ($)	Dec. 31, 2022 USD ($)
Derivative Instruments And Hedging Activities Disclosures [Line Items]
Gain (loss) on sale of natural gas		$ 2,700
Realized gain on sale of natural gas	$ 6,800
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 | MMBTU	0
Realized gain on sale of natural gas		$ 1,500
Natural Gas Purchase Commitments [Member] | Level 2 [Member]
Derivative Instruments And Hedging Activities Disclosures [Line Items]
Natural gas purchase commitments volume | MMBTU	0