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Disaggregation of Revenue by Principal End Markets with the Reportable Segment (Detail) - USD ($) $ in Thousands | 12 Months Ended
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Dec. 28, 2020 | Dec. 30, 2019 | Dec. 31, 2018
Disaggregation Of Revenue [Line Items] |  |  |
Total Revenue | $ 2,105,322 | $ 2,133,210 | $ 2,237,742
Printed Circuit Board |  |  |
Disaggregation Of Revenue [Line Items] |  |  |
Total Revenue | 1,905,243 | 1,844,562 | 1,959,090
RF&S Components |  |  |
Disaggregation Of Revenue [Line Items] |  |  |
Total Revenue | 44,656 | 62,315 | 52,705
E-M Solutions |  |  |
Disaggregation Of Revenue [Line Items] |  |  |
Total Revenue | 155,423 | 226,333 | 225,947
Aerospace and Defense |  |  |
Disaggregation Of Revenue [Line Items] |  |  |
Total Revenue | 745,885 | 697,599 | 607,584
Aerospace and Defense | Printed Circuit Board |  |  |
Disaggregation Of Revenue [Line Items] |  |  |
Total Revenue | 745,041 | 696,279 | 606,573
Aerospace and Defense | RF&S Components |  |  |
Disaggregation Of Revenue [Line Items] |  |  |
Total Revenue | 189 | 777 | 153
Aerospace and Defense | E-M Solutions |  |  |
Disaggregation Of Revenue [Line Items] |  |  |
Total Revenue | 655 | 543 | 858
Automotive |  |  |
Disaggregation Of Revenue [Line Items] |  |  |
Total Revenue | 318,855 | 404,105 | 475,471
Automotive | Printed Circuit Board |  |  |
Disaggregation Of Revenue [Line Items] |  |  |
Total Revenue | 270,240 | 302,101 | 388,643
Automotive | E-M Solutions |  |  |
Disaggregation Of Revenue [Line Items] |  |  |
Total Revenue | 48,615 | 102,004 | 86,828
Cellular Phone |  |  |
Disaggregation Of Revenue [Line Items] |  |  |
Total Revenue | 1,341 | 1,224 |
Cellular Phone | Printed Circuit Board |  |  |
Disaggregation Of Revenue [Line Items] |  |  |
Total Revenue | 1,341 | 1,224 |
Computing/Storage/Peripherals |  |  |
Disaggregation Of Revenue [Line Items] |  |  |
Total Revenue | 259,036 | 237,491 | 283,130
Computing/Storage/Peripherals | Printed Circuit Board |  |  |
Disaggregation Of Revenue [Line Items] |  |  |
Total Revenue | 258,032 | 235,615 | 280,497
Computing/Storage/Peripherals | RF&S Components |  |  |
Disaggregation Of Revenue [Line Items] |  |  |
Total Revenue | 834 | 1,588 | 939
Computing/Storage/Peripherals | E-M Solutions |  |  |
Disaggregation Of Revenue [Line Items] |  |  |
Total Revenue | 170 | 288 | 1,694
Medical/Industrial/Instrumentation |  |  |
Disaggregation Of Revenue [Line Items] |  |  |
Total Revenue | 387,695 | 364,985 | 387,201
Medical/Industrial/Instrumentation | Printed Circuit Board |  |  |
Disaggregation Of Revenue [Line Items] |  |  |
Total Revenue | 374,237 | 331,551 | 345,078
Medical/Industrial/Instrumentation | RF&S Components |  |  |
Disaggregation Of Revenue [Line Items] |  |  |
Total Revenue | 2,967 | 3,752 | 2,271
Medical/Industrial/Instrumentation | E-M Solutions |  |  |
Disaggregation Of Revenue [Line Items] |  |  |
Total Revenue | 10,491 | 29,682 | 39,852
Networking/Communications |  |  |
Disaggregation Of Revenue [Line Items] |  |  |
Total Revenue | 370,584 | 391,074 | 460,004
Networking/Communications | Printed Circuit Board |  |  |
Disaggregation Of Revenue [Line Items] |  |  |
Total Revenue | 234,211 | 253,306 | 322,128
Networking/Communications | RF&S Components |  |  |
Disaggregation Of Revenue [Line Items] |  |  |
Total Revenue | 39,160 | 43,333 | 40,982
Networking/Communications | E-M Solutions |  |  |
Disaggregation Of Revenue [Line Items] |  |  |
Total Revenue | 97,213 | 94,435 | 96,894
Other |  |  |
Disaggregation Of Revenue [Line Items] |  |  |
Total Revenue | 21,926 | 36,732 | 24,352
Other | Printed Circuit Board |  |  |
Disaggregation Of Revenue [Line Items] |  |  |
Total Revenue | 22,141 | 24,486 | 16,171
Other | RF&S Components |  |  |
Disaggregation Of Revenue [Line Items] |  |  |
Total Revenue | 1,506 | 12,865 | 8,360
Other | E-M Solutions |  |  |
Disaggregation Of Revenue [Line Items] |  |  |
Total Revenue | $ (1,721) | $ (619) | $ (179)

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