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Note 8 - Derivative Financial Instruments (Details) (USD $)
1 Months Ended
May 30, 2010
Aug. 31, 2014
May 25, 2014
Derivative Instruments and Hedging Activities Disclosure [Abstract]      
Derivative Asset, Notional Amount $ 20,000,000    
Interest Rate Swap Term 5 years    
Derivative, Swaption Interest Rate 4.24%    
Derivative, Notional Amount 20,000,000    
Derivative Liability, Fair Value, Gross Liability   $ 20,000 $ 44,000