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Revenues (Tables)
3 Months Ended
Mar. 31, 2019
Revenue from Contract with Customer [Abstract]  
Schedule of Disaggregated Revenue

Revenue disaggregated by revenue source for the three months ended March 31, 2019 and 2018, consists of the following:

 

    For the Three months ended  
    March 31,  
    2019     2018  
Product sales, net   $ 12,283     $ 8,855  
License revenues     7       10  
Total revenues   $ 12,290     $ 8,865