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Inventories, net
 9 Months Ended
Sep. 30, 2019
Inventories, net [Abstract]  
Inventories, net
4. Inventories, net

The components of inventories, net were:

  
September 30,
2019
  
December 31,
2018
 
  
(In thousands)
 
       
Raw materials and purchased component parts
 
$
6,898
  
$
6,593
 
Work-in-process
  
6
   
29
 
Finished goods
  
5,796
   
6,213
 
  
$
12,700
  
$
12,835