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Revenue (Tables)
 3 Months Ended
Mar. 31, 2019
Geographic Area [Member]  
Disaggregation of Revenue [Line Items]  
Schedule of revenue disaggregated by geographic area and major product category

   During the Three-Month
Periods Ended March 31,		 
   2019   2018 
United States  $3,777,746   $2,595,616 
Other   632,815    285,569 
Total product sales  $4,410,561   $2,881,185 
Major Product Category [Member]  
Disaggregation of Revenue [Line Items]  
Schedule of revenue disaggregated by geographic area and major product category

   During the Three-Month
Periods Ended March 31,		 
   2019   2018 
First Defense® product line  $4,140,917   $2,780,869 
Other animal health   136,043    100,316 
Other   133,601    — 
Total product sales  $4,410,561   $2,881,185