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Inventories (Tables)
9 Months Ended
Sep. 30, 2020
Inventory Disclosure [Abstract]  
Schedule of inventories Inventories consist of the following (dollars in thousands):
September 30,
2020
December 31,
2019
(unaudited)
Raw materials$9,528 $4,582 
Work in process17,571 11,428 
Finished goods15,366 10,618 
Total$42,465 $26,628