Accumulated Other Comprehensive Income (Loss) (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended
Mar. 29, 2014
Increase (Decrease) in Accumulated Other Comprehensive Income [Roll Forward]
Balance as of December 28, 2013	$ 612
Other comprehensive income	211
Balance as of March 29, 2014	823
Defined Benefit Pension Plans [Member]
Increase (Decrease) in Accumulated Other Comprehensive Income [Roll Forward]
Balance as of December 28, 2013	(28)
Other comprehensive income	0
Balance as of March 29, 2014	(28)
Foreign Currency Translations [Member]
Increase (Decrease) in Accumulated Other Comprehensive Income [Roll Forward]
Balance as of December 28, 2013	635
Other comprehensive income	104
Balance as of March 29, 2014	739
Unrealized Gain (Loss) on Investment [Member]
Increase (Decrease) in Accumulated Other Comprehensive Income [Roll Forward]
Balance as of December 28, 2013	5
Other comprehensive income	107
Balance as of March 29, 2014	$ 112

- 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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