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Inventories
 12 Months Ended
Dec. 31, 2022
Inventories [Abstract]  
Inventories
5. Inventories

   
December 31,
2022
    
December 31,
2021
  
 
  
(In thousands)
  
 
            
Finished goods
  
$
324,362
    
$
296,739
  
Work-in-process
    
14,099
      
16,010
  
Raw materials
    
190,254
      
156,006
  
Subtotal
    
528,715
      
468,755
  
Unreturned customer inventories
    
19,695
      
22,268
  
Total inventories
  
$
548,410
    
$
491,023