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Inventories (Tables)
6 Months Ended
Jun. 30, 2021
Inventory Disclosure [Abstract]  
Inventories consist of the following:

Inventories consist of the following:                                                                           

(In thousands)  June 30,
2021
   December 31,
2020
 
Raw materials and component parts  $79,223   $66,492 
Finished goods   84,259    92,330 
           
   $163,482   $158,822