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Inventories (Tables)
9 Months Ended
Sep. 30, 2019
Inventory Disclosure [Abstract]  
Schedule of inventories
Schedule of inventories        
(In thousands)  September 30,
2019
   December 31,
2018
 
         
Raw materials and component parts  $67,836   $67,508 
Finished goods   99,278    93,470 
           
 Inventories  $167,114   $160,978