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Segment Information - Segment Information (Details) - USD ($) $ in Thousands | 3 Months Ended | 9 Months Ended
--- | --- | ---
Sep. 29, 2018 | Sep. 30, 2017 | Sep. 29, 2018 | Sep. 30, 2017
Segment Reporting Information [Line Items] |  |  |  |
Net sales | $ 439,191 | $ 317,889 | $ 1,316,187 | $ 916,685
Depreciation and amortization | 26,258 | 15,946 | 76,060 | 46,634
Operating income (loss) | 76,228 | 58,609 | 173,421 | 167,731
Interest expense | 5,775 | 3,467 | 16,980 | 9,868
Foreign exchange loss (gain) | 982 | 632 | (6,372) | (1,483)
Other expense (income), net | 1,259 | (1,013) | (2,362) | (962)
Income before income taxes | 68,212 | 55,523 | 165,175 | 160,308
Electronics |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Net sales | 296,472 | 175,899 | 860,240 | 499,052
Depreciation and amortization | 15,898 | 8,986 | 45,227 | 26,080
Operating income (loss) | 72,464 | 44,345 | 193,739 | 122,518
Automotive |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Net sales | 114,416 | 113,797 | 367,718 | 338,094
Depreciation and amortization | 5,891 | 5,622 | 17,830 | 16,572
Operating income (loss) | 10,863 | 16,821 | 44,965 | 47,599
Industrial |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Net sales | 28,303 | 28,193 | 88,229 | 79,539
Depreciation and amortization | 1,364 | 1,338 | 4,291 | 3,982
Operating income (loss) | 4,134 | 3,757 | 14,123 | 5,769
Other |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Depreciation and amortization | 3,105 | 0 | 8,712 | 0
Operating income (loss) | $ (11,233) | $ (6,314) | $ (79,406) | $ (8,155)

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