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Note 9 - Employee Benefits (Tables)
12 Months Ended
Oct. 31, 2017
Notes Tables  
Schedule of Share-based Compensation, Restricted Stock and Restricted Stock Units Activity [Table Text Block]
Nonvested shares
 
Shares
   
Weighted-
average grant
date fair value
 
Balance at October 31, 2016
   
667,048
    $
3.89
 
Granted
   
391,211
     
3.41
 
Vested
   
(108,467
)    
3.85
 
Forfeited
   
(112,834
)    
3.63
 
Balance at October 31, 2017
   
836,958
    $
3.66