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Property, Plant and Equipment, Net (Tables)
3 Months Ended
Mar. 31, 2020
Property, Plant and Equipment [Abstract]  
Schedule of property, plant and equipment
   Estimated Useful Lives
(in years)
  As of
March 31, 2020
   As of
December 31, 2019
 
Laboratory and manufacturing equipment  3-10  $15,462,319   $15,437,724 
Building and improvements  10-39   17,078,829    17,078,829 
Office furniture and equipment  3-10   716,793    719,323 
Construction in progress  n/a   2,552,383    1,124,189 
Land  n/a   516,867    516,867 
Property, plant and equipment, gross      36,327,191    34,876,932 
Accumulated depreciation      (10,153,890)   (9,611,194)
Property, plant and equipment, net     $26,173,301   $25,265,738