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Financial Instruments and Derivatives - Additional Information (Details) MMBTU in Millions | 1 Months Ended | 3 Months Ended |  |
--- | --- | --- | --- | ---
Mar. 29, 2020 USD ($) | Mar. 29, 2020 USD ($) MMBTU T | Mar. 31, 2019 USD ($) | Jan. 31, 2020 USD ($) | Dec. 31, 2019 USD ($)
Derivative [Line Items] |  |  |  |  |
Fair value of commodity cash flow hedges, gain (loss) | $ (2,900,000) | $ (2,900,000) |  |  | $ (1,625,000)
Commodity gain (loss) expected to be reclassified to the income statement during the next 12 months | (2,543,000) | (2,543,000) |  |  |
Fair value of foreign currency cash flow hedges, gain (loss) | (3,609,000) | (3,609,000) |  |  | 1,058,000
Foreign currency gain (loss) expected to be reclassified to the income statement during the next 12 months | (3,609,000) | (3,609,000) |  |  |
Proceeds from cross-currency swap |  | 14,480,000 | $ 0 |  |
Total fair value of other derivatives not designated as hedging instruments | $ (145,000) | $ (145,000) |  |  | $ 54,000
Natural Gas Swaps |  |  |  |  |
Derivative [Line Items] |  |  |  |  |
Approximate amount of commodity covered by swap contracts outstanding (in MMBTUs) | MMBTU |  | 4.0 |  |  |
Anticipated usage percentage covered by a swap contract for the current fiscal year | 65.00% | 65.00% |  |  |
Aluminum Swaps |  |  |  |  |
Derivative [Line Items] |  |  |  |  |
Anticipated usage percentage covered by a swap contract for the current fiscal year | 23.00% | 23.00% |  |  |
Approximate amount of commodity covered by swap contracts outstanding (in tons) | T |  | 1,089 |  |  |
Cross-currency swap |  |  |  |  |
Derivative [Line Items] |  |  |  |  |
Notional amount |  |  |  | $ 250,000,000 |
Proceeds from cross-currency swap | $ 14,480,000 |  |  |  |
Tax provision on foreign currency translation gain |  | $ 7,581,000 |  |  |
Cross-currency swap | U.S. dollars |  |  |  |  |
Derivative [Line Items] |  |  |  |  |
Interest rate (percent) |  |  |  | 5.75% |
Cross-currency swap | Euros |  |  |  |  |
Derivative [Line Items] |  |  |  |  |
Interest rate (percent) |  |  |  | 3.856% |

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