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Reconciliation of Operating Income (Loss) from Segments to Consolidated By Reportable Segments (Parenthetical) (Detail) - USD ($)
$ in Thousands
12 Months Ended
Dec. 28, 2020
Dec. 30, 2019
Dec. 31, 2018
Segment Reporting Information [Line Items]      
Amortization of definite-lived intangibles included in cost of goods sold $ 5,535 $ 4,822 $ 3,345
Segment assets 506,316 493,169  
Printed Circuit Board and RF&S Components      
Segment Reporting Information [Line Items]      
Amortization of definite-lived intangibles included in cost of goods sold $ 5,535 4,822 $ 3,345
Printed Circuit Board      
Segment Reporting Information [Line Items]      
Segment assets   $ 493,169