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Geographic And Group Information (Long-Lived Assets Attributable To Geographic Area) (Details) (USD $)	Mar. 28, 2014	Dec. 27, 2013
Revenues from External Customers and Long-Lived Assets [Line Items]
Total long-lived assets	$ 101,094,000	$ 90,341,000
North America [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Total long-lived assets	84,661,000	74,095,000
International Primarily European Countries [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Total long-lived assets	$ 16,433,000	$ 16,246,000

X

- Definition

Long-lived assets other than financial instruments, long-term customer relationships of a financial institution, mortgage and other servicing rights, deferred policy acquisition costs, and deferred tax assets.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 280

-SubTopic 10

-Section 50

-Paragraph 41

-Subparagraph (b)

-URI http://asc.fasb.org/extlink&oid=6534315&loc=d3e9038-108599

+ Details

Name:	us-gaap_NoncurrentAssets
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

X

- Details

Name:	us-gaap_RevenuesFromExternalCustomersAndLongLivedAssetsLineItems
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration