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Inventories
9 Months Ended
Sep. 30, 2020
Inventories [Abstract]  
Inventories
4. Inventories

The components of inventories were:

 
September 30,
2020
   
December 31,
2019
 
   
(In thousands)
 
             
Raw materials and purchased component parts
 
$
4,561
   
$
7,724
 
Work-in-process
   
8
     
 
Finished goods
   
7,934
     
4,375
 
   
$
12,503
   
$
12,099