Note 20 - Segment Information (Details Textual) $ in Thousands	10 Months Ended	12 Months Ended
Nov. 28, 2015 USD ($)	Nov. 25, 2017 USD ($)	Nov. 26, 2016 USD ($)	Nov. 28, 2015 USD ($)
Number of Reportable Segments		3
SGA Expenses Excluding New Store Pre-opening Costs		$ 245,493	$ 235,178	$ 224,050
Zenith Freight Lines [Member]
SGA Expenses Excluding New Store Pre-opening Costs	$ 73,722	$ 94,616	$ 92,196

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