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Other Income (Expense) (Details) - USD ($) $ in Thousands | 3 Months Ended | 12 Months Ended
--- | --- | ---
Dec. 31, 2017 | Sep. 30, 2017 | Jul. 01, 2017 | Apr. 01, 2017 | Dec. 31, 2016 | Oct. 01, 2016 | Jul. 02, 2016 | Apr. 02, 2016 | Dec. 31, 2017 | Dec. 31, 2016 | Dec. 31, 2015
Schedule of Equity Method Investments [Line Items] |  |  |  |  |  |  |  |  |  |  |
Loss on disposal of equity affiliate | $ (948) | $ 0 | $ 0 | $ 7,060 | $ 0 | $ 0 | $ 0 | $ 0 | $ 6,112 | $ 0 | $ 0
Amounts reclassified out of AOCI, net of tax |  |  |  |  |  |  |  |  | 6,222 | 94,509 | 7,923
Foreign exchange gain (loss) |  |  |  |  |  |  |  |  | (4,536) | 292 | 3,180
Interest income |  |  |  |  |  |  |  |  | 6,482 | 4,264 | 4,397
Other |  |  |  |  |  |  |  |  | (208) | 160 | 399
Other Income (expense) |  |  |  |  |  |  |  |  | 1,738 | 4,716 | 7,976
Insurance proceeds received |  |  |  |  |  |  |  |  |  | 13,406 |
Insurance proceeds classified as investing activities |  |  |  |  |  |  |  |  |  | 4,911 |
Loss related to Tianjin explosion | $ 0 | $ 0 | $ 0 | $ 0 | $ (8,809) | $ 0 | $ 0 | $ 0 | 0 | $ (8,809) | $ 5,350
Equity affiliate [Member] |  |  |  |  |  |  |  |  |  |  |
Schedule of Equity Method Investments [Line Items] |  |  |  |  |  |  |  |  |  |  |
Amounts reclassified out of AOCI, net of tax |  |  |  |  |  |  |  |  | $ 1,110 |  |

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