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Significant Customers and Concentration of Credit Risk - Additional Information (Detail) - Customer	12 Months Ended
	Dec. 28, 2020	Dec. 30, 2019	Dec. 31, 2018
Concentration Risk [Line Items]
Number of customers contributing to more than ten percent of revenue	1	0	0
PCB | Net Sales | Customer Concentration Risk
Concentration Risk [Line Items]
Percentage of net sales, accounted by one customer	11.00%

X

- Definition

Number of customers contributing to more than ten percent of revenue.

+ References

No definition available.

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- Definition

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.

+ References

No definition available.

+ Details

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- Definition

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.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 280
-SubTopic 10
-Section 50
-Paragraph 42
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-Section 50
-Paragraph 20
-URI http://asc.fasb.org/extlink&oid=99393423&loc=d3e6404-108592

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