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Inventories
12 Months Ended
Dec. 31, 2019
Inventory Disclosure [Abstract]  
Inventories Inventories
Inventories consist of the following (dollars in thousands):
 
December 31,
2019
 
December 31,
2018
Raw materials
$
4,582

 
$
5,742

Work in process
11,428

 
7,275

Finished goods
10,618

 
12,642

 
$
26,628

 
$
25,659