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Inventory (Tables)
9 Months Ended
Sep. 30, 2017
Inventory Disclosure [Abstract]  
Schedule of Inventory

    September 30, 2017     December 31, 2016  
    ($ in thousands)  
       
Finished goods   $ 113     $ 83  
Work in process     142       233  
Raw materials and supplies     321       184  
    $ 576     $ 500