Changes in Accumulated Other Comprehensive Income by Component (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Mar. 31, 2013	Apr. 01, 2012
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]
Beginning balance	$ 38,556
Other comprehensive income before reclassifications	(17,647)
Cost of goods sold	118,638	119,444
Other income (expense)	(1,505)	(2,063)
Net current period other comprehensive income	(17,325)
Ending balance	21,231
Reclassification out of Accumulated Other Comprehensive Income [Member]
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]
Cost of goods sold	297
Other income (expense)	25
Total reclassification out of AOCI	322
Accumulated Translation Adjustment [Member]
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]
Beginning balance	38,890
Other comprehensive income before reclassifications	(15,714)
Net current period other comprehensive income	(15,714)
Ending balance	23,176
Accumulated Translation Adjustment [Member] | Reclassification out of Accumulated Other Comprehensive Income [Member]
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]
Cost of goods sold	0
Other income (expense)	0
Total reclassification out of AOCI	0
Accumulated Net Unrealized Investment Gain (Loss) [Member]
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]
Beginning balance	4
Other comprehensive income before reclassifications	7
Net current period other comprehensive income	7
Ending balance	11
Accumulated Net Unrealized Investment Gain (Loss) [Member] | Reclassification out of Accumulated Other Comprehensive Income [Member]
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]
Cost of goods sold	0
Other income (expense)	0
Total reclassification out of AOCI	0
Accumulated Defined Benefit Plans Adjustment [Member]
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]
Beginning balance	(819)
Other comprehensive income before reclassifications	(15)
Net current period other comprehensive income	(15)
Ending balance	(834)
Accumulated Defined Benefit Plans Adjustment [Member] | Reclassification out of Accumulated Other Comprehensive Income [Member]
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]
Cost of goods sold	0
Other income (expense)	0
Total reclassification out of AOCI	0
Accumulated Net Gain (Loss) from Designated or Qualifying Cash Flow Hedges [Member]
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]
Beginning balance	481
Other comprehensive income before reclassifications	(1,925)
Net current period other comprehensive income	(1,603)
Ending balance	(1,122)
Accumulated Net Gain (Loss) from Designated or Qualifying Cash Flow Hedges [Member] | Reclassification out of Accumulated Other Comprehensive Income [Member]
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]
Cost of goods sold	297
Other income (expense)	25
Total reclassification out of AOCI	$ 322