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Intangible Assets (Schedule of Intangible Assets) (Details) - USD ($) | Dec. 31, 2019 | Dec. 31, 2018
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Finite-Lived Intangible Assets [Line Items] |  |
Intangible assets, net | $ 30,920,324 | $ 33,655,099
Product and License Rights |  |
Finite-Lived Intangible Assets [Line Items] |  |
Intangible assets, gross | 37,400,742 | 36,573,941
Accumulated amortization | (11,499,141) | (8,405,188)
Intangible assets, net | 25,901,601 | 28,168,753
Patents |  |
Finite-Lived Intangible Assets [Line Items] |  |
Intangible assets, gross | 9,882,511 | 9,428,266
Accumulated amortization | (5,127,878) | (4,087,273)
Intangible assets, net | 4,754,633 | 5,340,993
Trademarks |  |
Finite-Lived Intangible Assets [Line Items] |  |
Intangible assets, gross | 273,110 | 154,373
Accumulated amortization | (9,020) | (9,020)
Intangible assets, net | $ 264,090 | $ 145,353

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