Derivatives - Summary of Fair Values of Hedges and MTP Contracts (Detail) - USD ($) $ in Thousands	Jul. 04, 2020	Dec. 28, 2019
Derivative Instruments And Hedging Activities [Line Items]
Total derivative instruments Assets	$ 163	$ 193
Total derivative instruments Liabilities	(1,958)	(510)
Aluminum Forward Contracts [Member] | Other Current Assets [Member]
Derivative Instruments And Hedging Activities [Line Items]
Total derivative instruments Assets	4	193
Aluminum Forward Contracts [Member] | Other Assets [Member]
Derivative Instruments And Hedging Activities [Line Items]
Total derivative instruments Assets	18
Aluminum Forward Contracts [Member] | Accrued Liabilities [Member]
Derivative Instruments And Hedging Activities [Line Items]
Total derivative instruments Liabilities	(1,754)	$ (510)
Aluminum Forward Contracts [Member] | Other Liabilities [Member]
Derivative Instruments And Hedging Activities [Line Items]
Total derivative instruments Liabilities	(71)
MTP Contracts [Member] | Other Current Assets [Member]
Derivative Instruments And Hedging Activities [Line Items]
Total derivative instruments Assets	73
MTP Contracts [Member] | Other Assets [Member]
Derivative Instruments And Hedging Activities [Line Items]
Total derivative instruments Assets	68
MTP Contracts [Member] | Accrued Liabilities [Member]
Derivative Instruments And Hedging Activities [Line Items]
Total derivative instruments Liabilities	(125)
MTP Contracts [Member] | Other Liabilities [Member]
Derivative Instruments And Hedging Activities [Line Items]
Total derivative instruments Liabilities	$ (8)