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Inventory (Tables)
9 Months Ended
Sep. 30, 2017
Inventory Tables  
Inventory (Tables)

Inventory consists of the following:

      September 30,     December 31,
(in thousands)     2017     2016
Raw materials   $ 1,248    $ 999 
Finished goods     3,005      234 
    $ 4,253    $ 1,233