Note 11 - Income Taxes (Details) - Activity Related To Gross Unrecognized Tax Benefits (USD $) In Thousands, unless otherwise specified	3 Months Ended	12 Months Ended
Aug. 31, 2013	Nov. 30, 2013	Nov. 24, 2012
Activity Related To Gross Unrecognized Tax Benefits [Abstract]
Balance, beginning of the year		$ 1,228	$ 1,502
Gross increases		401	10
Gross decreases, primarily due to the expiration of statutes	(221)	(132)	(284)
Balance, end of the year		$ 1,497	$ 1,228

Amount of unrecognized tax benefits pertaining to uncertain tax positions taken in tax returns.

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

-Publisher FASB

-Name Accounting Standards Codification

-Glossary Unrecognized Tax Benefit

-URI http://asc.fasb.org/extlink&oid=6527854

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 740

-SubTopic 10

-Section 50

-Paragraph 15A

-Subparagraph (a)

-URI http://asc.fasb.org/extlink&oid=6907707&loc=SL6600010-109319

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