Note 12 - Income Taxes (Detail) - The income tax effects of temporary differences and carryforwards (USD $) In Thousands, unless otherwise specified	Nov. 24, 2012	Nov. 26, 2011
Deferred income tax assets:
Trade accounts receivable	$ 688	$ 804
Inventories	1,946	2,036
Property and equipment	1,688	3,749
Notes receivable	1,592	1,592
Retirement benefits	5,547	5,162
Federal net operating loss and credit carryforwards		134
State net operating loss carryforwards	2,309	2,376
Unrealized holding loss	1,069	912
Lease termination accruals	1,005	1,676
Other	2,580	2,707
Gross deferred income tax assets	18,424	21,148
Valuation allowance	(908)	(19,612)
Total deferred income tax assets	17,516	1,536
Deferred income tax liabilities:
Unrealized gains from affiliates, net	78	125
Prepaid expenses and other	121	169
Unrealized holding gains, net		81
Total deferred income tax liabilities	199	375
Net deferred income tax assets	$ 17,317	$ 1,161