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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 |

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