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Note 9 - Earnings Per Share (Details) - Antidilutive securities
3 Months Ended 9 Months Ended
Aug. 31, 2013
Aug. 25, 2012
Aug. 31, 2013
Aug. 25, 2012
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]        
Antidilutive securities 485,000 473,898 553,795 726,082
Equity Option [Member]
       
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]        
Antidilutive securities 415,000 472,500 472,500 713,500
Restricted Stock [Member]
       
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]        
Antidilutive securities 70,000 1,398 81,295 12,582