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Inventory (Tables)
9 Months Ended
Sep. 30, 2019
Inventory Disclosure [Abstract]  
Schedule of Inventory
  September 30,   December 31, 
   2019   2018 
   ($ in thousands) 
Finished goods  $124   $284 
Work in process   166    111 
Raw materials and supplies   993    739 
   $1,283   $1,134