Restructuring Costs (Summary Of Restructuring Expense Accruals) (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended
Dec. 27, 2013	Dec. 28, 2012
Restructuring Cost and Reserve [Line Items]
Accrual balance	$ 246	$ 603
expenditures	(112)	(146)
benefit		(211)
Accrual balance	134	246
Exit, Closure And Consolidation Of Facilities [Member]
Restructuring Cost and Reserve [Line Items]
Accrual balance	246	603
expenditures	(112)	(146)
benefit		(211)
Accrual balance	$ 134	$ 246

Carrying amount (including both current and noncurrent portions of the accrual) as of the balance sheet date pertaining to a specified type of cost associated with exit from or disposal of business activities or restructuring pursuant to a duly authorized plan.

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 420

-SubTopic 10

-Section S99

-Paragraph 2

-Subparagraph (SAB TOPIC 5.P.4(b))

-URI http://asc.fasb.org/extlink&oid=27011515&loc=d3e140904-122747

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

-Publisher SEC

-Name Staff Accounting Bulletin (SAB)

-Number Topic 5

-Section P

-Subsection 3, 4

Name:	us-gaap_RestructuringReserve
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant