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Inventories (Tables)
12 Months Ended
Dec. 31, 2019
Inventory Disclosure [Abstract]  
Schedule of Inventory, Current
Inventories at December 31 consisted of:

 
 
2019
 
2018
Finished goods
 
$
69,594

 
$
87,779

Work-in-process
 
88,196

 
98,426

Raw materials and supplies
 
74,916

 
79,785

 
 
$
232,706

 
$
265,990