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Summary of Restructuring Costs (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 28, 2020	Dec. 30, 2019	Dec. 31, 2018
Reportable Segment:
Restructuring charges	$ 16,764	$ 5,380	$ 4,660
E-M Solutions
Reportable Segment:
Restructuring charges	16,573
General and administrative
Reportable Segment:
Restructuring charges	16,764	5,380	4,660
General and administrative | Employee Separation/ Severance
Reportable Segment:
Restructuring charges	15,270	5,350	4,539
General and administrative | Contract Termination and Other Costs
Reportable Segment:
Restructuring charges	1,494	30	121
General and administrative | Reportable Segment | Printed Circuit Board
Reportable Segment:
Restructuring charges	14	5,218	1,150
General and administrative | Reportable Segment | RF&S Components
Reportable Segment:
Restructuring charges		52
General and administrative | Reportable Segment | E-M Solutions
Reportable Segment:
Restructuring charges	16,573
General and administrative | Reportable Segment | Employee Separation/ Severance | Printed Circuit Board
Reportable Segment:
Restructuring charges		5,218	1,150
General and administrative | Reportable Segment | Employee Separation/ Severance | RF&S Components
Reportable Segment:
Restructuring charges		52
General and administrative | Reportable Segment | Employee Separation/ Severance | E-M Solutions
Reportable Segment:
Restructuring charges	15,251
General and administrative | Reportable Segment | Contract Termination and Other Costs | Printed Circuit Board
Reportable Segment:
Restructuring charges	14
General and administrative | Reportable Segment | Contract Termination and Other Costs | E-M Solutions
Reportable Segment:
Restructuring charges	1,322
General and administrative | Corporate
Reportable Segment:
Restructuring charges	177	110	3,510
General and administrative | Corporate | Employee Separation/ Severance
Reportable Segment:
Restructuring charges	19	80	3,389
General and administrative | Corporate | Contract Termination and Other Costs
Reportable Segment:
Restructuring charges	$ 158	$ 30	$ 121

X

- Definition

Amount of expenses associated with exit or disposal activities pursuant to an authorized plan. Excludes expenses related to a discontinued operation or an asset retirement obligation.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 420
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SAB Topic 5.P.3)
-URI http://asc.fasb.org/extlink&oid=115931487&loc=d3e140864-122747

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 420
-SubTopic 10
-Section 50
-Paragraph 1
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=6394359&loc=d3e17939-110869

Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 28
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=121586364&loc=d3e3602-108585

Reference 4: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 420
-SubTopic 10
-Section S99
-Paragraph 2
-Subparagraph (SAB Topic 5.P.4(b))
-URI http://asc.fasb.org/extlink&oid=115931487&loc=d3e140904-122747

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