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Note 12 - Derivative Financial Instruments (Detail) (USD $)
0 Months Ended 3 Months Ended 1 Months Ended
May 23, 2012
Aug. 26, 2012
May 27, 2012
May 30, 2010
May 30, 2010
Wells Fargo [Member]
Notional Amount of Cash Flow Hedge Instruments       $ 20,000,000  
Interest Rate Swap Term         5 years
Derivative, Swaption Interest Rate       4.24%  
Derivative, Notional Amount       20,000,000  
Derivative Instruments, Gain (Loss) Reclassified from Accumulated OCI into Income, Effective Portion, Net 347,000        
Derivative Liability, Fair Value, Gross Liability 305,000   347,000    
Derivative Instruments, Gain Recognized in Income   $ 42,000