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Inventories (Tables)
9 Months Ended
Sep. 30, 2019
Inventory Disclosure [Abstract]  
Schedule of Inventories
Inventories as of September 30, 2019 and December 31, 2018 were as follows:
In thousands
 
September 30,
2019
 
December 31,
2018
Raw materials
 
$
43,279

 
$
37,731

Work in process
 
17,308

 
18,296

Finished goods
 
27,602

 
28,438

Total inventories
 
$
88,189

 
$
84,465