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Inventories
 12 Months Ended
Dec. 31, 2023
Inventories [Abstract]  
Inventories
3. Inventories

The components of inventories are:

 
December 31,
  
(In thousands)
  
2023
      
2022
Raw materials and purchased component parts
  
$
9,382
    
$
8,884
  
Finished goods
    
8,377
      
3,144
  
   
$
17,759
    
$
12,028