Note 8 - Notes Payable and Bank Credit Facility (Details) - Real Estate Notes Payable and Bank Debt (USD $) In Thousands, unless otherwise specified	Feb. 28, 2015	Nov. 29, 2014
Note 8 - Notes Payable and Bank Credit Facility (Details) - Real Estate Notes Payable and Bank Debt [Line Items]
Principal Balance	$ 15,835
Unamortized Discount	(541)
Net Carrying Amount	15,294
Less current portion, Principal Balance	(4,881)	(316)
Less current portion, Unamortized Discount	295
Less current portion, Net Carrying Amount	(4,586)	(316)
Total long-term debt, Principal Balance	10,954	1,902
Total long-term debt, Unamortized Discount	(246)
Total long-term debt, Net Carrying Amount	10,708	1,902
Zenith Note Payable [Member]
Note 8 - Notes Payable and Bank Credit Facility (Details) - Real Estate Notes Payable and Bank Debt [Line Items]
Principal Balance	9,000
Unamortized Discount	(541)
Net Carrying Amount	8,459
Transportation Equipment Notes Payable [Member]
Note 8 - Notes Payable and Bank Credit Facility (Details) - Real Estate Notes Payable and Bank Debt [Line Items]
Principal Balance	3,229
Net Carrying Amount	3,229
Real Estate Notes Payable [Member]
Note 8 - Notes Payable and Bank Credit Facility (Details) - Real Estate Notes Payable and Bank Debt [Line Items]
Principal Balance	3,606	2,218
Net Carrying Amount	$ 3,606	$ 2,218