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Note 10 - Notes Payable and Bank Credit Facility (Details Textual) - USD ($) $ in Thousands	12 Months Ended
	Nov. 24, 2018	Nov. 25, 2017	Nov. 26, 2016	Nov. 15, 2018
Long-term Debt, Total	$ 292	$ 3,734
Long-term Debt, Current Maturities, Total	292	3,405
Interest Paid, Excluding Capitalized Interest, Operating Activities	88	139	$ 353
Bank One [Member]
Line of Credit Facility, Maximum Borrowing Capacity				$ 25,000
Letters of Credit Outstanding, Amount	2,798
Line of Credit Facility, Remaining Borrowing Capacity	$ 22,202
Bank Two [Member]
Letters of Credit Outstanding, Amount				$ 381
Real Estate Notes Payable Operated in Retail Segment [Member]
Debt Instrument, Interest Rate, Stated Percentage	6.73%
Long-term Debt, Total	$ 293	747
Long-term Debt, Current Maturities, Total	293	418
Real Estate Notes Payable Operated in Retail Segment [Member] \| Financed Through Commercial Mortgages [Member]
Debt Instrument, Collateral Amount	5,599	5,727
Zenith Freight Lines [Member] \| Unsecured Debt [Member]
Amortization of Debt Discount (Premium)	$ 13	$ 95	$ 204