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Note 5 - Goodwill and Intangible Assets (Tables)
9 Months Ended
Jun. 30, 2018
Notes Tables  
Schedule of Finite-Lived Intangible Assets [Table Text Block]
   
June 30, 2018
   
September 30, 2017
 
   
Gross
Carrying
Amount
   
Accumulated
Amortization
   
Net Carrying
Amount
   
Gross
Carrying
Amount
   
Accumulated
Amortization
   
Net Carrying
Amount
 
Technology
  $
650,767
    $
(42,610
)   $
608,157
    $
-
    $
-
    $
-
 
Customer relationships
   
622,474
     
(40,757
)    
581,717
     
-
     
-
     
-
 
Trade name portfolio
   
226,354
     
(20,749
)    
205,605
     
-
     
-
     
-
 
Non-compete agreements
   
245,216
     
(37,464
)    
207,752
     
-
     
-
     
-
 
Patents
   
108,247
     
(57,970
)    
50,277
     
108,247
     
(52,558
)    
55,689
 
    $
1,853,058
    $
(199,550
)   $
1,653,508
    $
108,247
    $
(52,558
)   $
55,689
 
Schedule of Finite-Lived Intangible Assets, Future Amortization Expense [Table Text Block]
Estimated Future Amortization Expense for the Years Ended September 30, 2018 (July 1, 2018 through September 30, 2018)
  $
79,030
 
2019
   
316,117
 
2020
   
316,117
 
2021
   
258,219
 
2022
   
234,378
 
Thereafter
   
449,647
 
Total futue estimated amortization expense
  $
1,653,508