Note 2 - Significant Accounting Policies (Details Textual)		1 Months Ended	3 Months Ended		12 Months Ended
	Feb. 02, 2015 USD ($) shares	Mar. 31, 2016 USD ($)	Aug. 30, 2014 USD ($)	Feb. 28, 2014 USD ($)	Nov. 26, 2016 USD ($)	Nov. 28, 2015 USD ($) shares	Nov. 29, 2014 USD ($)
Percent Of Aggregate Risk Exposure Net Of Reserves Attributable To Major Customers					30.00%	26.00%
Concentration Risk, Percentage					100.00%	100.00%	100.00%
Percentage of LIFO Inventory					53.00%	43.00%
Land					$ 12,311,000	$ 12,311,000
Buildings and Improvements, Gross					109,728,000	104,265,000
Accumulated Depreciation, Depletion and Amortization, Property, Plant, and Equipment					116,451,000	105,962,000
Depreciation					12,396	10,226	$ 7,356
Proceeds from Sale of Real Estate			$ 3,750,000	$ 1,407,000			5,157,000
Goodwill, Impairment Loss					0
Pre-Opening Costs					1,148,000	623,000	1,217,000
Shipping, Handling and Transportation Costs						6,863,000	31,308,000
Advertising Expense					16,688,000	16,228,000	15,614,000
Reclassification From Additional Paid-in Capital to Income Tax Expense [Member]
Current Period Reclassification Adjustment		$ 87,000
Tax Benefits Reclassification From Cash Flow Provided by Financing Activities to Cash Flow Provided by Operating Activities [Member] | Year Ended November 28, 2015 [Member]
Prior Period Reclassification Adjustment		1,998,000
Tax Benefits Reclassification From Cash Flow Provided by Financing Activities to Cash Flow Provided by Operating Activities [Member] | Year Ended November 29, 2014 [Member]
Prior Period Reclassification Adjustment		$ 300,000
Zenith Freight Lines [Member]
Business Acquisition, Equity Interest Issued or Issuable, Number of Shares | shares	89,485
Business Combination, Consideration Transferred, Equity Interests Issued and Issuable	$ 1,675,000					1,675,000
Notes Issued						$ 8,436,000
Zenith Freight Lines [Member] | Common Stock [Member]
Business Acquisition, Equity Interest Issued or Issuable, Number of Shares | shares						89,485
Deliver Wholesale Merchandise to Customers [Member]
Shipping, Handling and Transportation Costs					18,451,000	$ 18,624,000	16,162,000
Deliver Retail Merchandise to Customers [Member]
Shipping, Handling and Transportation Costs					15,946,000	15,383,000	12,844,000
Retail Real Estate [Member]
Land					990,000
Buildings and Improvements, Gross					6,178,000	6,178,000
Accumulated Depreciation, Depletion and Amortization, Property, Plant, and Equipment					4,311,000	4,160,000
Depreciation					152,000	184,000	400,000
Sugarland Real Estate [Member]
Proceeds from Sale of Real Estate						2,835,000
Impairment of Real Estate						182,000
Export Sales [Member]
Revenues					3,607,000	4,516,000	$ 4,774,000
Logistical Services [Member]
Depreciation					$ 3,882,000	$ 2,366,000
Customer Concentration Risk [Member] | Sales Revenue, Net [Member]
Number of Major Customers					0	0	0
Customer Concentration Risk [Member] | Sales Revenue, Net [Member] | Logistical Services [Member]
Number of Major Customers					1	1
Concentration Risk, Percentage					36.00%	26.00%
Minimum [Member]
Payment Terms For Wholesale Customers					30 days
Minimum [Member] | Building and Building Improvements [Member]
Property, Plant and Equipment, Useful Life					10 years
Minimum [Member] | Machinery and Equipment [Member]
Property, Plant and Equipment, Useful Life					5 years
Minimum [Member] | Retail Buildings And Improvements [Member]
Property, Plant and Equipment, Useful Life					10 years
Maximum [Member]
Payment Terms For Wholesale Customers					60 days
Maximum [Member] | Building and Building Improvements [Member]
Property, Plant and Equipment, Useful Life					39 years
Maximum [Member] | Machinery and Equipment [Member]
Property, Plant and Equipment, Useful Life					10 years
Maximum [Member] | Retail Buildings And Improvements [Member]
Property, Plant and Equipment, Useful Life					39 years