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Amount of assets pledged to secure a debt instrument.

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Face (par) amount of debt instrument at time of issuance.

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Note 9 - Notes Payable and Bank Credit Facility (Details Textual) $ in Thousands		3 Months Ended		9 Months Ended
	Feb. 02, 2015 USD ($)	Aug. 27, 2016 USD ($)	Aug. 29, 2015 USD ($)	Aug. 27, 2016 USD ($)	Aug. 29, 2015 USD ($)	Feb. 02, 2016	Dec. 05, 2015 USD ($)	Nov. 28, 2015 USD ($)
Zenith Freight Lines [Member] \| Unsecured Debt [Member]
Debt Instrument, Face Amount	$ 9,000
Debt Instrument, Number of Annual Payments	3
Debt Instrument, Periodic Payment	$ 3,000
Debt Instrument, Interest Rate, Stated Percentage	0.62%					1.14%
Amortization of Debt Discount (Premium)		$ 46	$ 76	$ 158	$ 177
Long-term Debt, Current Maturities		$ 2,878		$ 2,878				$ 2,796
Transportation Equipment Notes Payable [Member] \| Maximum [Member]
Debt Instrument, Interest Rate, Stated Percentage		2.69%		2.69%
Debt Instrument, Term				4 years 60 days
Transportation Equipment Notes Payable [Member] \| Minimum [Member]
Debt Instrument, Term				3 years 120 days
Transportation Equipment Notes Payable [Member]
Long-term Debt		$ 6,787		$ 6,787				2,152
Secured Debt, Current		1,756		1,756				901
Debt Instrument, Collateral Amount		7,948		7,948				3,796
Real Estate Notes Payable Operated in Retail Segment [Member] \| Financed Through Commercial Mortgages [Member]
Debt Instrument, Collateral Amount		$ 5,892		$ 5,892				5,993
Real Estate Notes Payable Operated in Retail Segment [Member]
Debt Instrument, Interest Rate, Stated Percentage		6.73%		6.73%
Long-term Debt		$ 1,447		$ 1,447				1,709
Secured Debt, Current		369		369				351
Real Estate Notes Payable Operated in Logistical Services Segment [Member]
Secured Debt								1,224
Bank One [Member]
Line of Credit Facility, Maximum Borrowing Capacity							$ 15,000
Letters of Credit Outstanding, Amount		1,970		1,970
Line of Credit Facility, Remaining Borrowing Capacity		13,030		13,030
Bank Two [Member]
Letters of Credit Outstanding, Amount		381		381
Long-term Debt, Current Maturities		5,003		5,003				5,273
Long-term Debt		$ 14,080		$ 14,080				$ 13,773