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Note 11 - Intangible Assets (Tables)
9 Months Ended
Jul. 31, 2020
Notes Tables  
Schedule of Finite-lived and Indefinite-lived Intangible Assets [Table Text Block]
   
July 31, 2020
   
October 31, 2019
 
Amortizable intangible assets:
               
Non-compete agreement (estimated life 5 years)
  $
423
    $
200
 
Accumulated amortization
   
(233
)    
(200
)
     
190
     
-
 
                 
Customer relationships (estimated lives 7 - 15 years)
   
5,058
     
2,879
 
Accumulated amortization
   
(2,246
)    
(1,884
)
     
2,812
     
995
 
                 
Backlog (estimated life 1 - 2 years)
   
287
     
134
 
Accumulated amortization
   
(234
)    
(134
)
     
53
     
-
 
                 
Patents (estimated life 10 - 14 years)
   
368
     
142
 
Accumulated amortization
   
(69
)    
(45
)
     
299
     
97
 
                 
Totals
  $
3,354
    $
1,092
 
                 
Non-amortizable intangible assets:
               
Trademarks
  $
1,174
    $
657