Net Investment Hedge (Details) - USD ($) $ in Thousands	3 Months Ended	6 Months Ended
Jun. 30, 2019	Jul. 01, 2018	Jun. 30, 2019	Jul. 01, 2018
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Cumulative translation adjustment	$ (16,904)	$ 60,642	$ 11,887	$ 28,847
Senior Subordinated Notes
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Cumulative translation adjustment	$ 6,900	$ 66,500	$ 6,900	$ 66,500

Amount after tax, before reclassification adjustments of gain (loss) on foreign currency translation adjustments, foreign currency transactions designated and effective as economic hedges of a net investment in a foreign entity and intra-entity foreign currency transactions that are of a long-term-investment nature.

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