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Note 8 - Income Taxes (Detail) (USD $)
3 Months Ended 6 Months Ended 18 Months Ended
Nov. 25, 2012
Aug. 26, 2012
Nov. 27, 2011
Nov. 25, 2012
Nov. 27, 2011
Nov. 27, 2012
May 27, 2012
Income Tax Expense (Benefit) $ 2,920,000   $ 2,049,000 $ 5,484,000 $ 3,159,000    
Effective Income Tax Rate, Continuing Operations       29.00%   38.00%  
Effective Income Tax Rate Reconciliation, at Federal Statutory Income Tax Rate   35.00%          
Unrecognized Tax Benefits             766,000
Unrecognized Tax Benefits that Would Impact Effective Tax Rate             593,000
Unrecognized Tax Benefits Future Period $ 8,000