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Derivative Instruments - Additional Information (Detail) $ in Thousands | 3 Months Ended | 6 Months Ended
--- | --- | ---
Jun. 30, 2025 USD ($) Customer Derivative | Jun. 30, 2024 USD ($) Customer | Jun. 30, 2025 USD ($) Customer Derivative | Jun. 30, 2024 USD ($) Customer
Derivative [Line Items] |  |  |  |
Number of subsidiaries for purchases of natural gas under existing commitments | Customer | 2 | 2 | 2 | 2
Purchases of natural gas under existing commitments description |  |  | for two of its subsidiaries | for two of its subsidiaries
Number of subsidiaries for usage of electricity under existing commitments | Customer | 2 | 2 | 2 | 2
Usage of electricity under existing commitments description |  |  | for two of its subsidiaries. | for two of its subsidiaries
Number of derivative instruments holds for trading purposes | Derivative | 0 |  | 0 |
(Loss) gain on foreign exchange transactions included in other income net | $ (1,352) | $ 302 | $ (1,131) | $ (190)
Pre-tax termination gain |  |  | 559 |
Termination gain expected to be released |  |  | $ 537 |
Natural Gas Usage [Member] |  |  |  |
Derivative [Line Items] |  |  |  |
Percentage of anticipated purchases hedged | 25.00% | 4.00% | 25.00% | 4.00%
Anticipated purchases, hedged | $ 737 | $ 1,830 | $ 737 | $ 1,830
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 | 28.00% | 10.00% | 28.00% | 10.00%
Anticipated purchases, hedged | $ 527 | $ 1,129 | $ 527 | $ 1,129
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 | $ 961 | $ 854 | $ 2,085 | $ 1,833
Copper Purchases [Member] |  |  |  |
Derivative [Line Items] |  |  |  |
Percentage of anticipated purchases hedged |  | 41.00% |  | 41.00%
Time period for hedged purchases |  |  |  | 8 months
Copper Purchases [Member] | Cash Flow Hedges [Member] |  |  |  |
Derivative [Line Items] |  |  |  |
Anticipated purchases, hedged |  | $ 2,495 |  | $ 2,495
Aluminum Purchases [Member] |  |  |  |
Derivative [Line Items] |  |  |  |
Percentage of anticipated purchases hedged | 75.00% | 56.00% | 75.00% | 56.00%
Time period for hedged purchases |  |  | 5 months | 6 months
Aluminum Purchases [Member] | Cash Flow Hedges [Member] |  |  |  |
Derivative [Line Items] |  |  |  |
Anticipated purchases, hedged | $ 556 | $ 621 | $ 556 | $ 621

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