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Note 9 - Employee Benefits (Details Textual) - USD ($)
1 Months Ended 12 Months Ended
Mar. 31, 2017
Oct. 31, 2017
Oct. 31, 2016
Oct. 31, 2015
Health Insurance Coverage Expense   $ 3,360,633 $ 3,042,441 $ 3,665,320
Defined Contribution Plan, Employer Discretionary Contribution Amount   52,524 29,396 145,181
Allocated Share-based Compensation Expense   787,100 800,520 1,078,563
Restricted Stock [Member]        
Allocated Share-based Compensation Expense   $ 734,016 599,450 948,190
Services and Performance Based Shares [Member]        
Employee Service Share-based Compensation, Nonvested Awards, Compensation Cost Not yet Recognized, Period for Recognition   2 years 328 days    
Employee Service Share-based Compensation, Nonvested Awards, Compensation Cost Not yet Recognized   $ 2,300,000    
The 2017 Stock Incentive Plan [Member]        
Share-based Compensation Arrangement by Share-based Payment Award, Number of Additional Shares Authorized 500,000      
Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Available for Grant   584,000    
The 2017 Stock Incentive Plan [Member] | Restricted Stock [Member]        
Deferred Compensation Arrangement with Individual, Allocated Share-based Compensation Expense   $ 53,084    
The 2017 Stock Incentive Plan [Member] | Restricted Stock [Member] | Non-employee Directors [Member]        
Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Gross   31,380    
2015 Restated Incentive Plan [Member] | Restricted Stock [Member]        
Deferred Compensation Arrangement with Individual, Allocated Share-based Compensation Expense     $ 201,070 $ 130,373
2015 Restated Incentive Plan [Member] | Restricted Stock [Member] | Non-employee Directors [Member]        
Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Gross     86,296 33,515