Financial Instruments and Derivatives - Additional Information (Details) gal in Millions, MMBTU in Millions	1 Months Ended	6 Months Ended
	Mar. 31, 2020 USD ($)	Jun. 28, 2020 USD ($) MMBTU T gal	Jun. 30, 2019 USD ($)	Dec. 27, 2020	Jan. 31, 2020 USD ($)	Dec. 31, 2019 USD ($)
Derivative [Line Items]
Fair value of commodity cash flow hedges, gain (loss)		$ (1,722,000)				$ (1,625,000)
Commodity gain (loss) expected to be reclassified to the income statement during the next 12 months		(1,189,000)
Fair value of foreign currency cash flow hedges, gain (loss)		(2,299,000)				1,058,000
Foreign currency gain (loss) expected to be reclassified to the income statement during the next 12 months		(2,296,000)
Proceeds from cross-currency swap		14,480,000	$ 0
Total fair value of other derivatives not designated as hedging instruments		$ 21,000				$ 54,000
Natural Gas Swaps
Derivative [Line Items]
Approximate amount of commodity covered by swap contracts outstanding (in MMBTUs) | MMBTU		2.3
Anticipated usage percentage covered by a swap contract for the current fiscal year (percent)		64.00%
Aluminum Swaps
Derivative [Line Items]
Anticipated usage percentage covered by a swap contract for the current fiscal year (percent)		23.00%
Anticipated usage percentage covered by a swap contract for the next fiscal year (percent)				4.00%
Approximate amount of commodity covered by swap contracts outstanding (in tons) | T		1,088
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%
Diesel Swaps
Derivative [Line Items]
Gallons of diesel fuel covered under contract (gallons) | gal		3.1