Changes in Accumulated Other Comprehensive Income by Component (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Mar. 30, 2014	Mar. 31, 2013
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]
Beginning balance	$ 47,128	$ 38,556
Other comprehensive income before reclassifications	(629)	(17,647)
Cost of goods sold	(119,940)	(118,638)
Other income (expense)	(270)	(1,505)
Net current period other comprehensive income	(96)	(17,325)
Ending balance	47,032	21,231
Reclassification out of Accumulated Other Comprehensive Income [Member]
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]
Revenues	(37)
Cost of goods sold	570	297
Other income (expense)	0	25
Total reclassification out of AOCI	533	322
Accumulated Translation Adjustment [Member]
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]
Beginning balance	48,865	38,890
Other comprehensive income before reclassifications	107	(15,714)
Net current period other comprehensive income	107	(15,714)
Ending balance	48,972	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	0
Other income (expense)	0	0
Total reclassification out of AOCI	0	0
Accumulated Net Unrealized Investment Gain (Loss) [Member]
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]
Beginning balance	(11)	4
Other comprehensive income before reclassifications	1	7
Net current period other comprehensive income	1	7
Ending balance	(10)	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	0
Other income (expense)	0	0
Total reclassification out of AOCI	0	0
Accumulated Defined Benefit Plans Adjustment [Member]
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]
Beginning balance	(552)	(819)
Other comprehensive income before reclassifications	16	(15)
Net current period other comprehensive income	16	(15)
Ending balance	(536)	(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	0
Other income (expense)	0	0
Total reclassification out of AOCI	0	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	(1,174)	481
Other comprehensive income before reclassifications	(753)	(1,925)
Net current period other comprehensive income	(220)	(1,603)
Ending balance	(1,394)	(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]
Revenues	(37)
Cost of goods sold	570	297
Other income (expense)	0	25
Total reclassification out of AOCI	$ 533	$ 322