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Derivative Instruments (Details) - Foreign Exchange Forward [Member] - Other Nonoperating Income (Expense) [Member] - USD ($)
$ in Thousands
3 Months Ended 6 Months Ended
Jul. 02, 2016
Jun. 27, 2015
Jul. 02, 2016
Jun. 27, 2015
Derivative Instruments, Gain (Loss) [Line Items]        
Derivative Instruments Not Designated as Hedging Instruments, Gain $ 6      
Derivative Instruments Not Designated as Hedging Instruments, Loss   $ (192) $ (374) $ (192)