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Property, Plant and Equipment (Tables)
 6 Months Ended
Jun. 30, 2016
Property, Plant and Equipment [Abstract]  
Schedule of property, plant and equipment

    As of 
June 30,
2016		     As of
December 31, 2015		     Increase (Decrease)  
                   
Laboratory and manufacturing equipment   $ 5,243,628     $ 3,766,556     $ 1,477,072  
Building and improvements     4,935,842       4,716,204       219,638  
Office furniture and equipment     570,824       568,188       2,636  
Construction in progress(1)     521,811       1,084,924       (563,113 )
Land     347,114       333,486       13,628  
Property, plant and equipment, gross     11,619,219       10,469,358       1,149,861  
Accumulated depreciation     (5,116,886 )     (4,750,544 )     (366,342 )
Property, plant and equipment, net   $ 6,502,333     $ 5,718,814     $ 783,519  

 

(1) As of June 30, 2016, construction in progress included $95,691 in payments related to the construction of our commercial-scale Nisin plant. As of December 31, 2015, construction in progress consisted principally of partial payments towards new manufacturing equipment related to expanding our production capacity for First Defense®.