Quarterly report pursuant to Section 13 or 15(d)

Inventories (Details)

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Inventories (Details) - USD ($)
$ in Thousands
Sep. 30, 2019
Dec. 31, 2018
Inventory Disclosure [Abstract]    
Raw materials $ 12,139 $ 10,410
Work in progress 1,797 1,524
Finished goods 31,346 30,114
Total inventories $ 45,282 $ 42,048