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Inventory (Tables)
3 Months Ended
Mar. 31, 2020
Inventory Disclosure [Abstract]  
Schedule of Inventory

    March 31,     December 31,  
    2020     2019  
    ($ in thousands)  
Finished goods   $ 33     $ 173  
Work in process     281       81  
Raw materials and supplies     888       982  
    $ 1,202     $ 1,236