Accumulated Other Comprehensive Loss - Components of Accumulated Other Comprehensive Income (Loss) (Detail) $ in Thousands	12 Months Ended
Jan. 02, 2016 USD ($)
Components of Accumulated Other Comprehensive Income (Loss) [Line Items]
Beginning Balance	$ 73,976
Tax effect	(50)
Reclassification of income tax allocation	1,595
Net current-period other comprehensive income	1,671
Ending Balance	106,961
Accumulated Other Comprehensive Loss [Member]
Components of Accumulated Other Comprehensive Income (Loss) [Line Items]
Beginning Balance	(1,671)
Net current-period other comprehensive income	1,671
Aluminum Forward Contracts [Member]
Components of Accumulated Other Comprehensive Income (Loss) [Line Items]
Other comprehensive income before reclassification	126
Tax effect	(50)
Reclassification of income tax allocation	1,595
Net current-period other comprehensive income	1,671
Aluminum Forward Contracts [Member] \| Accumulated Other Comprehensive Loss [Member]
Components of Accumulated Other Comprehensive Income (Loss) [Line Items]
Beginning Balance	$ (1,671)

Other comprehensive income loss reclassification adjustment from AOCI on derivatives reversal of income tax allocation.

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Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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Amount before tax and reclassification adjustments of other comprehensive income (loss) attributable to parent.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 220
-SubTopic 10
-Section 45
-Paragraph 14A
-URI http://asc.fasb.org/extlink&oid=84228862&loc=SL7669686-108580

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Amount after tax of other comprehensive income (loss) attributable to parent entity.

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Reference 1: http://www.xbrl.org/2003/role/presentationRef
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Amount of tax expense (benefit) allocated to other comprehensive income (loss) attributable to parent entity.

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Total of all stockholders' equity (deficit) items, net of receivables from officers, directors, owners, and affiliates of the entity which are attributable to the parent. The amount of the economic entity's stockholders' equity attributable to the parent excludes the amount of stockholders' equity which is allocable to that ownership interest in subsidiary equity which is not attributable to the parent (noncontrolling interest, minority interest). This excludes temporary equity and is sometimes called permanent equity.

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