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Note 8 - Stockholder's Equity (Details Textual) - $ / shares
3 Months Ended 9 Months Ended
Sep. 02, 2015
Jun. 04, 2015
Mar. 02, 2015
Dec. 03, 2014
Aug. 31, 2015
Aug. 31, 2014
Aug. 31, 2015
Aug. 31, 2014
Subsequent Event [Member]                
Common Stock, Dividends, Per Share, Declared $ 0.01              
Quarterly Dividend [Member]                
Common Stock, Dividends, Per Share, Declared       $ 0.01        
Special Cash Distribution [Member]                
Common Stock, Dividends, Per Share, Declared       0.01        
Common Stock, Dividends, Per Share, Declared   $ 0.01 $ 0.01 $ 0.02 $ 0.01 $ 0.01 $ 0.04 $ 0.05