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Reconciliation of Operating Income (Loss) from Segments to Consolidated By Reportable Segments (Parenthetical) (Detail) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 28, 2020	Sep. 30, 2019	Sep. 28, 2020	Sep. 30, 2019
Segment Reporting Information [Line Items]
Amortization of definite-lived intangibles	$ 1,384	$ 1,180	$ 4,151	$ 3,539
Printed Circuit Board and RF&S Components
Segment Reporting Information [Line Items]
Amortization of definite-lived intangibles	$ 1,384	$ 1,180	$ 4,151	$ 3,539

X

- Definition

Amount of expense for allocation of cost of intangible asset over its useful life directly used in production of good and rendering of service.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 220
-SubTopic 10
-Section S99
-Paragraph 2
-Subparagraph (SX 210.5-03(b)(2))
-URI http://asc.fasb.org/extlink&oid=120395209&loc=SL114868664-224227

+ Details

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X

- 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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X

- Details

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