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Geographic area information (Tables)
 12 Months Ended
Dec. 31, 2019
Geographic area information [Abstract]  
Net sales and fixed assets by geographic area
Information regarding our operations by geographic area is contained in the following table.  These amounts in the geographic area table are based on the location of the customer and asset.

 
 
Year Ended December 31,
 
(In thousands)
 
2019
  
2018
  
2017
 
Net sales:
         
United States
 
$
35,332
  
$
43,518
  
$
48,720
 
International
  
10,416
   
11,069
   
7,591
 
Total
 
$
45,748
  
$
54,587
  
$
56,311
 
 
            
Fixed assets, net:
            
United States
 
$
1,326
  
$
1,767
  
$
1,548
 
International
  
918
   
505
   
621
 
Total
 
$
2,244
  
$
2,272
  
$
2,169