Note 10 - Notes Payable and Bank Credit Facility (Details Textual) - USD ($) $ in Thousands	12 Months Ended
	Nov. 30, 2019	Nov. 24, 2018	Nov. 25, 2017
Interest Paid, Excluding Capitalized Interest, Operating Activities	$ 7	$ 166	$ 322
Bank One [Member]
Line of Credit Facility, Maximum Borrowing Capacity	25,000
Letters of Credit Outstanding, Amount	2,673
Line of Credit Facility, Remaining Borrowing Capacity	22,327
Bank Two [Member]
Letters of Credit Outstanding, Amount	$ 325
Real Estate Notes Payable Operated in Retail Segment [Member]
Long-term Debt, Total		$ 292