Note 9 - Commitments and Contingencies (Details) (USD $) In Thousands, unless otherwise specified	Jul. 26, 2014
Insurance Settlements Receivable	$ 2,290
Workforce Subject to Collective Bargaining Arrangements
Multiemployer Plans, Collective-Bargaining Arrangement, Percentage of Employer's Participants	91.00%
Workforce Subject to Collective Bargaining Arrangements Expiring within One Year
Multiemployer Plans, Collective-Bargaining Arrangement, Percentage of Employer's Participants	29.00%

Percentage of employee participants subject to a collective bargaining arrangement to all of the employer's participants in a pension or postretirement benefit plan to which two or more unrelated employers contribute where assets contributed by one participating employer may be used to provide benefits to employees of other participating employers.

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 715

-SubTopic 80

-Section 50

-Paragraph 5

-Subparagraph (d)

-URI http://asc.fasb.org/extlink&oid=35742057&loc=SL14450657-114947

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Namespace Prefix:	us-gaap_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	instant