Note 20 - Segment Information (Details Textual) $ in Thousands	9 Months Ended	12 Months Ended
Aug. 29, 2015 USD ($)	Nov. 28, 2015 USD ($)	Nov. 29, 2014 USD ($)	Nov. 30, 2013 USD ($)
Zenith Freight Lines [Member]
SGA Expenses Excluding New Store Pre-opening Costs	$ 73,722
Number of Reportable Segments	3
SGA Expenses Excluding New Store Pre-opening Costs		$ 224,050	$ 166,073	$ 155,318

Number of segments reported by the entity. A reportable segment is a component of an entity for which there is an accounting requirement to report separate financial information on that component in the entity's financial statements.

No definition available.

Name:	us-gaap_NumberOfReportableSegments
Namespace Prefix:	us-gaap_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	duration