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Inventories
 3 Months Ended
Mar. 31, 2020
Inventory, Net [Abstract]  
Inventories INVENTORIES

Inventories consisted of the following:
(in thousands)
March 31, 2020
 
December 31, 2019
Raw materials
$
47,542

 
$
50,099

Work in progress
13,438

 
13,325

Finished goods
170,370

 
175,774

 
231,350

 
239,198

LIFO and valuation adjustments
(24,402
)
 
(27,856
)
Inventories, net
$
206,948

 
$
211,342