Note 12 - Income Taxes (Detail) (USD $) In Thousands, except Per Share data, unless otherwise specified	3 Months Ended			12 Months Ended
	Nov. 24, 2012	Aug. 25, 2012	May 26, 2012	Nov. 24, 2012	Nov. 26, 2011	Nov. 27, 2010
Income Tax Expense (Benefit)	$ 15,907	$ 1,205	$ 1,592	$ (14,699)	$ 4,409	$ (206)
Years Company Remained in Cumulative Loss Position					3 years
Valuation Allowance, Deferred Tax Asset, Change in Amount				18,704	17,464	(2,962)
Effect of Change in Deferred Tax Assets Valuation Allowance on Basic Earnings Per Share (in Dollars per share)				$ 1.70
Effect of Change in Deferred Tax Assets Valuation Allowance on Diluted Earnings Per Share (in Dollars per share)				$ 1.69
Deferred Tax Assets, Valuation Allowance	908			908	19,612
Operating Loss Carryforwards	29,059			29,059
Income Taxes Paid, Net				2,010	3,651
Proceeds from Income Tax Refunds						1,582
Unrecognized Tax Benefits	1,228			1,228	1,502	1,565
Unrecognized Tax Benefits that Would Impact Effective Tax Rate	175			175	440
Unrecognized Tax Benefits, Interest on Income Taxes Expense				(63)	67	(112)
Unrecognized Tax Benefits, Income Tax Penalties Expense				57	46	30
Unrecognized Tax Benefits, Interest on Income Taxes Accrued	164			164	226
Unrecognized Tax Benefits, Income Tax Penalties Accrued	40			40	97
State Net Operating Loss Carryforwards [Member]
Deferred Tax Assets, Valuation Allowance	908			908
Federal Operating Loss Carryforwards [Member]
Income Tax Expense (Benefit)					$ (6,341)