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Inventories
9 Months Ended
Sep. 30, 2019
Inventory Disclosure [Abstract]  
Inventories Inventories
Inventories consist of the following components (dollars in thousands):
 
 
September 30,
2019
 
December 31,
2018
Finished goods
 
$
88,670

 
$
91,780

Work in process
 
32,570

 
29,080

Raw materials
 
55,060

 
52,260

Total inventories
 
$
176,300

 
$
173,120