Stockholders' Equity Accumulated Other Comprehensive Loss (Details) - USD ($) $ in Thousands		9 Months Ended
		Sep. 27, 2015	Sep. 28, 2014
Accumulated Other Comprehensive Loss, Net of Tax [Roll Forward]
Balance, beginning of year		$ (31,294)	$ (10,337)
Current-period other comprehensive income (loss)		(32,089)	(10,433)
Balance, end of the period		(63,383)	(20,770)
Other Comprehensive Income (Loss), Reclassification Adjustment from AOCI on Derivatives, Net of Tax		435
Other Comprehensive Income (Loss), Reclassification Adjustment from AOCI on Derivatives, Before Tax		708
Other Comprehensive Income (Loss), Reclassification Adjustment from AOCI on Derivatives, Tax		(273)
Foreign Currency Translation
Accumulated Other Comprehensive Loss, Net of Tax [Roll Forward]
Balance, beginning of year		(28,363)	(9,803)
Current-period other comprehensive income (loss)		(29,879)	(9,238)
Balance, end of the period		(58,242)	(19,041)
Cash Flow Hedges
Accumulated Other Comprehensive Loss, Net of Tax [Roll Forward]
Balance, beginning of year	[1]	(2,044)	744
Current-period other comprehensive income (loss)	[1]	(2,007)	(1,533)
Balance, end of the period	[1]	(4,051)	(789)
Pension
Accumulated Other Comprehensive Loss, Net of Tax [Roll Forward]
Balance, beginning of year		(887)	(1,278)
Current-period other comprehensive income (loss)		(203)	338
Balance, end of the period		$ (1,090)	$ (940)

[1] Current-period other comprehensive (loss) income for the nine months ended September 27, 2015 and September 28, 2014 includes the effect of changes in unrealized losses on cash flow hedges, net of tax. The three and nine months ended September 27, 2015 also include the reclassification of unrealized losses on cash flow hedges of $435 from “Accumulated other comprehensive loss” to our condensed consolidated statements of operations consisting of $708 recorded to “Interest expense,” net of the related income tax benefit of $273 recorded to “Provision for income taxes.” See Note 8 for more information.