Accumulated Other Comprehensive Items (Details) (USD $) In Thousands, unless otherwise specified	9 Months Ended
Sep. 27, 2014	Sep. 28, 2013
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]
Balance at Beginning of Year	$ 710	$ (3,315)
Other comprehensive (loss) income before reclassifications	(7,457)	1,056
Reclassifications from AOCI	32	799
Net current period other comprehensive (loss) income	(7,425)	1,855
Balance at End of Quarter	(6,715)	(1,460)
Foreign Currency Translation Adjustment
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]
Balance at Beginning of Year	8,919	8,124
Other comprehensive (loss) income before reclassifications	(7,567)	1,143
Reclassifications from AOCI	0	0
Net current period other comprehensive (loss) income	(7,567)	1,143
Balance at End of Quarter	1,352	9,267
Unrecognized Prior Service Cost
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]
Balance at Beginning of Year	(657)	(748)
Other comprehensive (loss) income before reclassifications	(64)	0
Reclassifications from AOCI	86	68
Net current period other comprehensive (loss) income	22	68
Balance at End of Quarter	(635)	(680)
Deferred Loss on Pension and Other Post Retirement Plans
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]
Balance at Beginning of Year	(6,919)	(9,645)
Other comprehensive (loss) income before reclassifications	21	(6)
Reclassifications from AOCI	172	300
Net current period other comprehensive (loss) income	193	294
Balance at End of Quarter	(6,726)	(9,351)
Deferred Loss on Hedging Instruments
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]
Balance at Beginning of Year	(633)	(1,046)
Other comprehensive (loss) income before reclassifications	153	(81)
Reclassifications from AOCI	(226)	431
Net current period other comprehensive (loss) income	(73)	350
Balance at End of Quarter	$ (706)	$ (696)

- Definition

Accumulated change in equity from transactions and other events and circumstances from non-owner sources, net of tax effect, at period end. Excludes Net Income (Loss), and accumulated changes in equity from transactions resulting from investments by owners and distributions to owners. Includes foreign currency translation items, certain pension adjustments, unrealized gains and losses on certain investments in debt and equity securities, other than temporary impairment (OTTI) losses related to factors other than credit losses on available-for-sale and held-to-maturity debt securities that an entity does not intend to sell and it is not more likely than not that the entity will be required to sell before recovery of the amortized cost basis, as well as changes in the fair value of derivatives related to the effective portion of a designated cash flow hedge.

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