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Derivative Instruments - Additional Information (Detail) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2025 USD ($) Derivative Customer	Sep. 30, 2024 USD ($) Customer	Sep. 30, 2025 USD ($) Derivative Customer	Sep. 30, 2024 USD ($) Customer
Derivative [Line Items]
Number of subsidiaries for purchases of natural gas under existing commitments | Customer	1	2	1	2
Purchases of natural gas under existing commitments description			for one of its subsidiaries	for two of its subsidiaries
Number of subsidiaries for usage of electricity under existing commitments | Customer	1	2	1	2
Usage of electricity under existing commitments description			for one of its subsidiaries.	for two of its subsidiaries
Number of derivative instruments holds for trading purposes | Derivative	0		0
Loss on foreign exchange transactions included in other income net	$ (57)	$ (1,130)	$ (1,188)	$ (1,320)
Termination gain			495
Pre-tax termination gain			$ 559
Natural Gas Usage [Member]
Derivative [Line Items]
Percentage of anticipated purchases hedged	26.00%	3.00%	26.00%	3.00%
Anticipated purchases, hedged	$ 286	$ 1,568	$ 286	$ 1,568
Time period for hedged usage description			natural gas usage through December 31, 2025	natural gas usage through December 31, 2025
Electricity Usage [Member]
Derivative [Line Items]
Percentage of anticipated purchases hedged	31.00%	9.00%	31.00%	9.00%
Anticipated purchases, hedged	$ 198	$ 945	$ 198	$ 945
Time period for hedged usage description			electricity usage through December 31, 2025	electricity usage through December 31, 2025
Natural Gas And Electricity Purchased [Member]
Derivative [Line Items]
Purchase of natural gas or electricity	$ 756	$ 674	$ 2,841	$ 2,507
Copper Purchases [Member]
Derivative [Line Items]
Percentage of anticipated purchases hedged		43.00%		43.00%
Time period for hedged purchases				9 months
Copper Purchases [Member] | Cash Flow Hedges [Member]
Derivative [Line Items]
Anticipated purchases, hedged		$ 2,853		$ 2,853
Aluminum Purchases [Member]
Derivative [Line Items]
Percentage of anticipated purchases hedged	75.00%	56.00%	75.00%	56.00%
Time period for hedged purchases			6 months	6 months
Aluminum Purchases [Member] | Cash Flow Hedges [Member]
Derivative [Line Items]
Anticipated purchases, hedged	$ 571	$ 615	$ 571	$ 615

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Amount, before tax, of realized and unrealized gain (loss) from foreign currency transaction.

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