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Geographic And Group Information (Geographic Revenue) (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 27, 2013	Sep. 28, 2012	Sep. 27, 2013	Sep. 28, 2012
Revenues from External Customers and Long-Lived Assets [Line Items]
Total revenue	$ 57,916	$ 55,647	$ 171,226	$ 167,694
North America [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Total revenue	47,377	44,663	136,323	131,627
International Primarily European Countries [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Total revenue	$ 10,539	$ 10,984	$ 34,903	$ 36,067

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- Definition

Aggregate revenue recognized during the period (derived from goods sold, services rendered, insurance premiums, or other activities that constitute an entity's earning process). For financial services companies, also includes investment and interest income, and sales and trading gains.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 225

-SubTopic 10

-Section S99

-Paragraph 2

-Subparagraph (SX 210.5-03.1)

-URI http://asc.fasb.org/extlink&oid=6880815&loc=d3e20235-122688



Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 03

-Paragraph 1

-Article 5

+ Details

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- Details

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