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Note 5 - Intangible Assets
 6 Months Ended
Mar. 31, 2017
Notes to Financial Statements  
Intangible Assets Disclosure [Text Block]
Note
5
- Intangible Assets
Intangible Assets
 
   
March 31, 2017
    
September 30, 2016
  
   
Customer Relationships
    
Developed Technology
    
Total
    
Customer Relationships
    
Developed Technology
    
Total
  
                                                 
Gross intangibles
   $
21,950,000
     $
2,525,000
     $
24,475,000
     $
22,104,000
     $
2,525,000
     $
24,629,000
  
Accumulated
amortization
    
(16,979,000
 )    
(1,990,000
 )    
(18,969,000
 )    
(14,938,000
 )    
(1,738,000
 )    
(16,676,000
 )
    $
4,971,000
     $
535,000
     $
5,506,000
     $
7,166,000
     $
787,000
     $
7,953,000
  
 
These gross intangible assets are being amortized over
five
years for financial statement purposes due to the short life cycle of technology that customer relationships depend on and over
15
years on a straight-line basis for tax purposes. The intangible amortization expenses were
$2,447,000
for the
six
-month period ended
March
31,
2017
as compared with
$2,518,000
in the prior year period.