Business Segments - Additional Information (Detail) $ in Millions	12 Months Ended
Dec. 29, 2018 USD ($) Customer	Dec. 30, 2017 USD ($)	Dec. 31, 2016 USD ($)
Product Information [Line Items]
Number of customers exceeding 10% of net sales \| Customer	4
Total percentage of sales to customers exceeding 10% of sales	63.00%	61.00%	60.00%
Net sales outside of the U.S. \| $	$ 60.5	$ 55.8	$ 48.6
Sales Revenue, Net [Member] \| Customer Concentration Risk [Member]
Product Information [Line Items]
Percentage of net sales	10.00%	10.00%	10.00%

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
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Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
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Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
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Reference 4: http://fasb.org/us-gaap/role/ref/legacyRef
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-Name Accounting Standards Codification
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