Changes in Accumulated Other Comprehensive Income by Component (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 28, 2015	Jun. 29, 2014	Jun. 28, 2015	Jun. 29, 2014
Accumulated Other Comprehensive Income, Net of Tax [Roll Forward]
Beginning Balance			$ 1,041,325
Ending balance	$ 1,030,969		1,030,969
Accumulated Translation Adjustment [Member]
Accumulated Other Comprehensive Income, Net of Tax [Roll Forward]
Beginning Balance	(77,170)	$ 48,972	(22,541)	$ 48,865
Other comprehensive income before reclassifications	15,605	(1,863)	(39,024)	(1,756)
Amounts reclassified from AOCI to:	0	0	0	0
Net current period other comprehensive income	15,605	(1,863)	(39,024)	(1,756)
Ending balance	(61,565)	47,109	(61,565)	47,109
Accumulated Net Unrealized Investment Gain (Loss) [Member]
Accumulated Other Comprehensive Income, Net of Tax [Roll Forward]
Beginning Balance	17	(10)	(38)	(11)
Other comprehensive income before reclassifications	(7)	39	48	40
Amounts reclassified from AOCI to:	0	0	0	0
Net current period other comprehensive income	(7)	39	48	40
Ending balance	10	29	10	29
Accumulated Defined Benefit Plans Adjustment [Member]
Accumulated Other Comprehensive Income, Net of Tax [Roll Forward]
Beginning Balance	(709)	(536)	(798)	(552)
Other comprehensive income before reclassifications	(18)	17	71	33
Amounts reclassified from AOCI to:	0	0	0	0
Net current period other comprehensive income	(18)	17	71	33
Ending balance	(727)	(519)	(727)	(519)
Accumulated Net Gain (Loss) from Designated or Qualifying Cash Flow Hedges [Member]
Accumulated Other Comprehensive Income, Net of Tax [Roll Forward]
Beginning Balance	(5,158)	(1,394)	(4,134)	(1,174)
Other comprehensive income before reclassifications	(1,316)	(1,022)	(5,108)	(1,775)
Amounts reclassified from AOCI to:	3,099	1,096	5,867	1,629
Net current period other comprehensive income	1,783	74	759	(146)
Ending balance	(3,375)	(1,320)	(3,375)	(1,320)
AOCI Attributable to Parent [Member]
Accumulated Other Comprehensive Income, Net of Tax [Roll Forward]
Beginning Balance	(83,020)	47,032	(27,511)	47,128
Other comprehensive income before reclassifications	14,264	(2,829)	(44,013)	(3,458)
Amounts reclassified from AOCI to:	3,099	1,096	5,867	1,629
Net current period other comprehensive income	17,363	(1,733)	(38,146)	(1,829)
Ending balance	(65,657)	45,299	(65,657)	45,299
Sales [Member] | Accumulated Translation Adjustment [Member]
Accumulated Other Comprehensive Income, Net of Tax [Roll Forward]
Amounts reclassified from AOCI to:		0	0	0
Sales [Member] | Accumulated Net Unrealized Investment Gain (Loss) [Member]
Accumulated Other Comprehensive Income, Net of Tax [Roll Forward]
Amounts reclassified from AOCI to:		0	0	0
Sales [Member] | Accumulated Defined Benefit Plans Adjustment [Member]
Accumulated Other Comprehensive Income, Net of Tax [Roll Forward]
Amounts reclassified from AOCI to:		0	0	0
Sales [Member] | Accumulated Net Gain (Loss) from Designated or Qualifying Cash Flow Hedges [Member]
Accumulated Other Comprehensive Income, Net of Tax [Roll Forward]
Amounts reclassified from AOCI to:		(9)	112	(46)
Sales [Member] | AOCI Attributable to Parent [Member]
Accumulated Other Comprehensive Income, Net of Tax [Roll Forward]
Amounts reclassified from AOCI to:		(9)	112	(46)
Cost of Goods, Total [Member] | Accumulated Translation Adjustment [Member]
Accumulated Other Comprehensive Income, Net of Tax [Roll Forward]
Amounts reclassified from AOCI to:	0	0	0	0
Cost of Goods, Total [Member] | Accumulated Net Unrealized Investment Gain (Loss) [Member]
Accumulated Other Comprehensive Income, Net of Tax [Roll Forward]
Amounts reclassified from AOCI to:	0	0	0	0
Cost of Goods, Total [Member] | Accumulated Defined Benefit Plans Adjustment [Member]
Accumulated Other Comprehensive Income, Net of Tax [Roll Forward]
Amounts reclassified from AOCI to:	0	0	0	0
Cost of Goods, Total [Member] | Accumulated Net Gain (Loss) from Designated or Qualifying Cash Flow Hedges [Member]
Accumulated Other Comprehensive Income, Net of Tax [Roll Forward]
Amounts reclassified from AOCI to:	3,084	1,096	5,647	1,666
Cost of Goods, Total [Member] | AOCI Attributable to Parent [Member]
Accumulated Other Comprehensive Income, Net of Tax [Roll Forward]
Amounts reclassified from AOCI to:	3,084	1,096	5,647	1,666
Other Income Expense Net [Member]
Accumulated Other Comprehensive Income, Net of Tax [Roll Forward]
Amounts reclassified from AOCI to:		9		9
Other Income Expense Net [Member] | Accumulated Translation Adjustment [Member]
Accumulated Other Comprehensive Income, Net of Tax [Roll Forward]
Amounts reclassified from AOCI to:	0	0	0	0
Other Income Expense Net [Member] | Accumulated Net Unrealized Investment Gain (Loss) [Member]
Accumulated Other Comprehensive Income, Net of Tax [Roll Forward]
Amounts reclassified from AOCI to:	0	0	0	0
Other Income Expense Net [Member] | Accumulated Defined Benefit Plans Adjustment [Member]
Accumulated Other Comprehensive Income, Net of Tax [Roll Forward]
Amounts reclassified from AOCI to:	0	0	0	0
Other Income Expense Net [Member] | Accumulated Net Gain (Loss) from Designated or Qualifying Cash Flow Hedges [Member]
Accumulated Other Comprehensive Income, Net of Tax [Roll Forward]
Amounts reclassified from AOCI to:	15	$ 9	108	$ 9
Other Income Expense Net [Member] | AOCI Attributable to Parent [Member]
Accumulated Other Comprehensive Income, Net of Tax [Roll Forward]
Amounts reclassified from AOCI to:	$ 15		$ 108