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Note 9 - Other Intangible Assets
 3 Months Ended
Mar. 31, 2017
Notes to Financial Statements  
Intangible Assets Disclosure [Text Block]
(9)
Other Intangible Assets
 
The carrying values of the Company’s definite lived intangible assets as of
March
31,
2017
and
December
 
31,
2016,
are as follows (in thousands):
 
    Patents   Non-
Compete		   Customer
List		   Total
Estimated useful life                
Gross amount at March 31, 2017   $
429
     $
512
     $
2,046
     $
2,987
  
Accumulated amortization at March 31, 2017    
(429
 )    
(465
 )    
(1,855
 )   $
(2,749
 )
Net balance at March 31, 2017   $
-
     $
47
     $
191
     $
238
  
                                 
Gross amount at December 31, 2016   $
429
     $
512
     $
2,046
     $
2,987
  
Accumulated amortization at December 31, 2016    
(429
 )    
(449
 )    
(1,791
 )   $
(2,669
 )
Net balance at December 31, 2016   $
-
     $
63
     $
255
     $
318
  
 
Amortization expense related to intangible assets was approximately
$79,000
and
$80,000
for each of the
three
-month periods ended
March
31,
2017
and
2016.
The estimated remaining amortization expense as of
March
31,
2017
is as follows (in thousands):
 
Remainder of:    
2017    
238
  
Total   $
238