Note 13 - Segment Information (Details Textual) $ in Thousands	3 Months Ended
Feb. 29, 2020 USD ($)	Mar. 02, 2019 USD ($)
Number of Reportable Segments	3
SGA Expenses Excluding New Store Pre-opening Costs	$ 64,640	$ 69,386
Zenith Freight Lines [Member]
SGA Expenses Excluding New Store Pre-opening Costs	$ 20,480	$ 21,039

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