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Inventories (Tables)
9 Months Ended
Sep. 30, 2020
Inventory Disclosure [Abstract]  
Schedule of inventories

 

(In thousands)

  September 30,
2020
   December 31,
2019
 
Raw materials and component parts  $71,134   $71,895 
Finished goods   107,718    95,914 
           
   $178,852   $167,809