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Note 11 - Equity Incentive Plan and Stock Based Compensation (Details Textual) - USD ($)
1 Months Ended 3 Months Ended 9 Months Ended
Apr. 30, 2016
Aug. 31, 2016
Aug. 31, 2015
Aug. 31, 2016
Aug. 31, 2015
Non Qualified Options to Each Director Annually or Upon Election [Member]          
Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Authorized   1,000   1,000  
Restricted Stock [Member] | Employees, Directors, and Consultants [Member]          
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period       43,000  
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Period       3 years  
Restricted Stock [Member] | Director [Member]          
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period 5,000        
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period       48,000  
Allocated Share-based Compensation Expense   $ 31,417 $ 15,339 $ 70,846 $ 28,484