Equity Accumulated Other Comprehensive Loss (Details) - USD ($) $ in Thousands	6 Months Ended
	Jun. 28, 2015	Jun. 29, 2014
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Balance, beginning of year	$ (31,294)	$ (10,337)
Current-period other comprehensive (loss) income	(15,139)	(1,105)
Balance, end of the period	(46,433)	(11,442)
Foreign Currency Translation
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Balance, beginning of year	(28,363)	(9,803)
Current-period other comprehensive (loss) income	(12,494)	975
Balance, end of the period	(40,857)	(8,828)
Cash Flow Hedges
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Balance, beginning of year	(2,044)	744
Current-period other comprehensive (loss) income	(2,442)	(2,418)
Balance, end of the period	(4,486)	(1,674)
Pension
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Balance, beginning of year	(887)	(1,278)
Current-period other comprehensive (loss) income	(203)	338
Balance, end of the period	$ (1,090)	$ (940)