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Summary of Significant Accounting Policies and Other Information - Revenue Disaggregation (Details) - USD ($) $ in Thousands | 3 Months Ended | 12 Months Ended
--- | --- | ---
Dec. 26, 2020 | Sep. 26, 2020 | Jun. 27, 2020 | Mar. 28, 2020 | Dec. 28, 2019 | Sep. 28, 2019 | Jun. 29, 2019 | Mar. 30, 2019 | Dec. 26, 2020 | Dec. 28, 2019 | Dec. 29, 2018
Disaggregation of Revenue |  |  |  |  |  |  |  |  |  |  |
Net sales | $ 400,696 | $ 391,566 | $ 307,337 | $ 346,096 | $ 338,523 | $ 361,971 | $ 397,879 | $ 405,500 | $ 1,445,695 | $ 1,503,873 | $ 1,718,468
Electronics – Semiconductor |  |  |  |  |  |  |  |  |  |  |
Disaggregation of Revenue |  |  |  |  |  |  |  |  |  |  |
Net sales |  |  |  |  |  |  |  |  | 522,352 | 539,820 |
Electronics – Passive Products and Sensors |  |  |  |  |  |  |  |  |  |  |
Disaggregation of Revenue |  |  |  |  |  |  |  |  |  |  |
Net sales |  |  |  |  |  |  |  |  | 415,410 | 421,260 |
Passenger Car Products |  |  |  |  |  |  |  |  |  |  |
Disaggregation of Revenue |  |  |  |  |  |  |  |  |  |  |
Net sales |  |  |  |  |  |  |  |  | 200,455 | 218,560 |
Commercial Vehicle Products |  |  |  |  |  |  |  |  |  |  |
Disaggregation of Revenue |  |  |  |  |  |  |  |  |  |  |
Net sales |  |  |  |  |  |  |  |  | 101,324 | 111,972 |
Automotive Sensors |  |  |  |  |  |  |  |  |  |  |
Disaggregation of Revenue |  |  |  |  |  |  |  |  |  |  |
Net sales |  |  |  |  |  |  |  |  | 93,985 | 98,001 |
Industrial Products |  |  |  |  |  |  |  |  |  |  |
Disaggregation of Revenue |  |  |  |  |  |  |  |  |  |  |
Net sales |  |  |  |  |  |  |  |  | 112,169 | 114,260 |
Electronics Segment |  |  |  |  |  |  |  |  |  |  |
Disaggregation of Revenue |  |  |  |  |  |  |  |  |  |  |
Net sales |  |  |  |  |  |  |  |  | 937,762 | 961,080 | 1,124,296
Electronics Segment | Electronics – Semiconductor |  |  |  |  |  |  |  |  |  |  |
Disaggregation of Revenue |  |  |  |  |  |  |  |  |  |  |
Net sales |  |  |  |  |  |  |  |  | 522,352 | 539,820 |
Electronics Segment | Electronics – Passive Products and Sensors |  |  |  |  |  |  |  |  |  |  |
Disaggregation of Revenue |  |  |  |  |  |  |  |  |  |  |
Net sales |  |  |  |  |  |  |  |  | 415,410 | 421,260 |
Electronics Segment | Passenger Car Products |  |  |  |  |  |  |  |  |  |  |
Disaggregation of Revenue |  |  |  |  |  |  |  |  |  |  |
Net sales |  |  |  |  |  |  |  |  | 0 | 0 |
Electronics Segment | Commercial Vehicle Products |  |  |  |  |  |  |  |  |  |  |
Disaggregation of Revenue |  |  |  |  |  |  |  |  |  |  |
Net sales |  |  |  |  |  |  |  |  | 0 | 0 |
Electronics Segment | Automotive Sensors |  |  |  |  |  |  |  |  |  |  |
Disaggregation of Revenue |  |  |  |  |  |  |  |  |  |  |
Net sales |  |  |  |  |  |  |  |  | 0 | 0 |
Electronics Segment | Industrial Products |  |  |  |  |  |  |  |  |  |  |
Disaggregation of Revenue |  |  |  |  |  |  |  |  |  |  |
Net sales |  |  |  |  |  |  |  |  | 0 | 0 |
Automotive Segment |  |  |  |  |  |  |  |  |  |  |
Disaggregation of Revenue |  |  |  |  |  |  |  |  |  |  |
Net sales |  |  |  |  |  |  |  |  | 395,764 | 428,533 | 479,791
Automotive Segment | Electronics – Semiconductor |  |  |  |  |  |  |  |  |  |  |
Disaggregation of Revenue |  |  |  |  |  |  |  |  |  |  |
Net sales |  |  |  |  |  |  |  |  | 0 | 0 |
Automotive Segment | Electronics – Passive Products and Sensors |  |  |  |  |  |  |  |  |  |  |
Disaggregation of Revenue |  |  |  |  |  |  |  |  |  |  |
Net sales |  |  |  |  |  |  |  |  | 0 | 0 |
Automotive Segment | Passenger Car Products |  |  |  |  |  |  |  |  |  |  |
Disaggregation of Revenue |  |  |  |  |  |  |  |  |  |  |
Net sales |  |  |  |  |  |  |  |  | 200,455 | 218,560 |
Automotive Segment | Commercial Vehicle Products |  |  |  |  |  |  |  |  |  |  |
Disaggregation of Revenue |  |  |  |  |  |  |  |  |  |  |
Net sales |  |  |  |  |  |  |  |  | 101,324 | 111,972 |
Automotive Segment | Automotive Sensors |  |  |  |  |  |  |  |  |  |  |
Disaggregation of Revenue |  |  |  |  |  |  |  |  |  |  |
Net sales |  |  |  |  |  |  |  |  | 93,985 | 98,001 |
Automotive Segment | Industrial Products |  |  |  |  |  |  |  |  |  |  |
Disaggregation of Revenue |  |  |  |  |  |  |  |  |  |  |
Net sales |  |  |  |  |  |  |  |  | 0 | 0 |
Industrial Segment |  |  |  |  |  |  |  |  |  |  |
Disaggregation of Revenue |  |  |  |  |  |  |  |  |  |  |
Net sales |  |  |  |  |  |  |  |  | 112,169 | 114,260 | $ 114,381
Industrial Segment | Electronics – Semiconductor |  |  |  |  |  |  |  |  |  |  |
Disaggregation of Revenue |  |  |  |  |  |  |  |  |  |  |
Net sales |  |  |  |  |  |  |  |  | 0 | 0 |
Industrial Segment | Electronics – Passive Products and Sensors |  |  |  |  |  |  |  |  |  |  |
Disaggregation of Revenue |  |  |  |  |  |  |  |  |  |  |
Net sales |  |  |  |  |  |  |  |  | 0 | 0 |
Industrial Segment | Passenger Car Products |  |  |  |  |  |  |  |  |  |  |
Disaggregation of Revenue |  |  |  |  |  |  |  |  |  |  |
Net sales |  |  |  |  |  |  |  |  | 0 | 0 |
Industrial Segment | Commercial Vehicle Products |  |  |  |  |  |  |  |  |  |  |
Disaggregation of Revenue |  |  |  |  |  |  |  |  |  |  |
Net sales |  |  |  |  |  |  |  |  | 0 | 0 |
Industrial Segment | Automotive Sensors |  |  |  |  |  |  |  |  |  |  |
Disaggregation of Revenue |  |  |  |  |  |  |  |  |  |  |
Net sales |  |  |  |  |  |  |  |  | 0 | 0 |
Industrial Segment | Industrial Products |  |  |  |  |  |  |  |  |  |  |
Disaggregation of Revenue |  |  |  |  |  |  |  |  |  |  |
Net sales |  |  |  |  |  |  |  |  | $ 112,169 | $ 114,260 |

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