Accumulated Other Comprehensive Items (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Mar. 29, 2014	Mar. 30, 2013
Accumulated Other Comprehensive Items [Line Items]
Balance at Beginning of Year	$ 710	$ (3,315)
Other comprehensive (loss) income before reclassifications	(728)	(3,105)
Reclassifications from AOCI	134	377
Net current period other comprehensive (loss) income	(594)	(2,728)
Balance at End of Quarter	116	(6,043)
Foreign Currency Translation Adjustment [Member]
Accumulated Other Comprehensive Items [Line Items]
Balance at Beginning of Year	8,919	8,124
Other comprehensive (loss) income before reclassifications	(763)	(3,060)
Reclassifications from AOCI	0	0
Net current period other comprehensive (loss) income	(763)	(3,060)
Balance at End of Quarter	8,156	5,064
Unrecognized Prior Service Cost [Member]
Accumulated Other Comprehensive Items [Line Items]
Balance at Beginning of Year	(657)	(748)
Other comprehensive (loss) income before reclassifications	0	2
Reclassifications from AOCI	22	22
Net current period other comprehensive (loss) income	22	24
Balance at End of Quarter	(635)	(724)
Deferred Loss on Pension and Other Post Retirement Plans [Member]
Accumulated Other Comprehensive Items [Line Items]
Balance at Beginning of Year	(6,919)	(9,645)
Other comprehensive (loss) income before reclassifications	(3)	0
Reclassifications from AOCI	58	113
Net current period other comprehensive (loss) income	55	113
Balance at End of Quarter	(6,864)	(9,532)
Deferred Loss on Hedging Instruments [Member]
Accumulated Other Comprehensive Items [Line Items]
Balance at Beginning of Year	(633)	(1,046)
Other comprehensive (loss) income before reclassifications	38	(47)
Reclassifications from AOCI	54	242
Net current period other comprehensive (loss) income	92	195
Balance at End of Quarter	$ (541)	$ (851)