Accumulated Other Comprehensive Loss (Details) $ in Thousands	9 Months Ended
	Sep. 27, 2016 USD ($)
Accumulated Other Comprehensive Loss
Balance as of beginning of period	$ 669,662
Balance as of end of period	735,590
Accumulated Other Comprehensive Loss
Accumulated Other Comprehensive Loss
Balance as of beginning of period	(109)
Other comprehensive loss before reclassification	(18)
Reclassification adjustments to income (1)	45
Income taxes	(11)
Balance as of end of period	(93)
Cash Flow Hedges
Accumulated Other Comprehensive Loss
Balance as of beginning of period	(27)
Reclassification adjustments to income (1)	45
Income taxes	(18)
Foreign Currency Translation
Accumulated Other Comprehensive Loss
Balance as of beginning of period	(82)
Other comprehensive loss before reclassification	(18)
Income taxes	7
Balance as of end of period	$ (93)