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Inventories (Tables)
12 Months Ended
Dec. 31, 2021
Inventory Disclosure [Abstract]  
Inventory, Net of Reserves
Inventories are classified as follows (in thousands):
 
    
December 31, 2021
    
December 31, 2020
 
Raw materials
   $ 165,240      $ 133,490  
Work in progress
     19,726        18,678  
Finished goods
     171,129        152,113  
    
 
 
    
 
 
 
Total inventories
   $ 356,095      $ 304,281