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Intangible Assets Other Than Goodwill (Tables)
 12 Months Ended
Dec. 31, 2016
Intangible Assets
Intangible assets are as follows (in thousands, except for weighted useful lives):
 
 
        
December 31, 2015
    
December 31, 2016
  
 
  
Weighted
Useful
Lives
    
Gross
Carrying
Amount
    
Accumulated
Amortization
    
Net
Amount
    
Gross
Carrying
Amount
    
Accumulated
Amortization
    
Net
Amount
  
 
  
(Years)
                                      
 
                                          
Amortized Intangible Assets:
                                          
Licenses
    
5.81
     $
24,930
     $
(20,436
 )   $
4,494
     $
20,130
     $
(17,248
 )   $
2,882
  
Product lines
    
7.50
      
50,093
      
(14,376
 )    
35,717
      
50,093
      
(20,634
 )    
29,459
  
Customer relationships
    
4.90
      
3,152
      
(2,195
 )    
957
      
3,152
      
(2,755
 )    
397
  
Trade names
    
5.00
      
3,000
      
(2,050
 )    
950
      
3,000
      
(2,650
 )    
350
  
Non-compete/ Employment contracts
    
5.00
      
200
      
(133
 )    
67
      
200
      
(177
 )    
23
  
Total amortized intangible assets
           $
81,375
     $
(39,190
 )   $
42,185
     $
76,575
     $
(43,464
 )   $
33,111
  
Unamortized Intangible Assets:
                                                        
Trademarks
           $
2,308
     $
―
     $
2,308
     $
2,608
     $
―
     $
2,608
  
Future Amortization Expenses
The Company currently estimates continuing future amortization expense to be approximately (in thousands):
 
2017
  
$
8,780
  
2018
    
6,137
  
2019
    
3,144
  
2020
    
3,053
  
2021
    
3,053
  
Thereafter
    
8,944
  
 
  
$
33,111