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Inventory (Details) - USD ($)
$ in Thousands
Sep. 30, 2020
Dec. 31, 2019
Inventory Disclosure [Abstract]    
Raw materials $ 426 $ 318
Work in process 5,241 4,299
Finished goods 5,904 5,206
Inventory, gross 11,571 9,823
Reserve for obsolescence (548) (719)
Inventory, net 11,023 9,104
Consignment inventory $ 3,400 $ 3,400