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Segment Information (Geographic Information) (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 26, 2015	Jun. 27, 2014	Jun. 26, 2015	Jun. 27, 2014	Dec. 26, 2014
Geographic Information [Line Items]
Net Sales	$ 335,489	$ 322,549	$ 641,942	$ 612,511
Long-Lived Assets	171,399		171,399		$ 161,230
United States
Geographic Information [Line Items]
Net Sales	170,921	156,160	330,249	290,082
Long-Lived Assets	140,935		140,935		131,131
Other Countries [Member]
Geographic Information [Line Items]
Net Sales	164,568	$ 166,389	311,693	$ 322,429
Long-Lived Assets	$ 30,464		$ 30,464		$ 30,099

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- 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.

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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)



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No definition available.

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+ 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=26872669&loc=d3e20235-122688



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



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-Name Regulation S-X (SX)



-Number 210



-Section 03



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