For an entity that discloses a concentration risk in relation to quantitative amount, which serves as the "benchmark" (or denominator) in the equation, this concept represents the concentration percentage derived from the division.

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 275
-SubTopic 10
-Section 50
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Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
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Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 825
-SubTopic 10
-Section 50
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-Subparagraph (a)
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Reference 4: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 275
-SubTopic 10
-Section 50
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-URI http://asc.fasb.org/extlink&oid=99393423&loc=d3e6404-108592

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Namespace Prefix:	us-gaap_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

Business Segment Data - Narrative (Detail) - major_business_line	12 Months Ended
	Dec. 28, 2018	Dec. 29, 2017	Dec. 30, 2016
Segment Reporting Information [Line Items]
Number of major business lines	1
Property, Plant and Equipment \| Costa Rica
Segment Reporting Information [Line Items]
Percentage of net sales	36.00%
Geographic Concentration Risk \| Net Sales Goods \| Walmart
Segment Reporting Information [Line Items]
Percentage of net sales	10.00%	9.00%	11.00%
Geographic Concentration Risk \| Net Sales Goods \| Top Ten Customers
Segment Reporting Information [Line Items]
Percentage of net sales	31.00%	32.00%	31.00%
Geographic Concentration Risk \| Net Sales Goods \| United States
Segment Reporting Information [Line Items]
Percentage of net sales	64.00%	58.00%	58.00%