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Revenue (Details) - USD ($)
 3 Months Ended 9 Months Ended
Sep. 30, 2020
Sep. 30, 2019
Sep. 30, 2020
Sep. 30, 2019
Total product sales $ 3,722,517 $ 2,970,496 $ 11,598,858 $ 10,090,977
United States [Member]        
Total product sales 3,361,820 2,728,368 10,319,232 9,033,592
Other [Member]        
Total product sales [1] $ 360,679 $ 242,128 $ 1,279,626 $ 1,057,385
[1] Sales outside of the United States included $133,601 of non-animal health sales during the first quarter of 2019, which product has since been divested.