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Investments in Affiliated Entities (Details) - shares | Dec. 31, 2019 | Dec. 31, 2018
--- | --- | ---
GeneOne Life Sciences |  |
Related Party Transaction [Line Items] |  |
Number of shares owned (shares) | 1,644,155 |
Percentage of ownership | 7.50% | 7.80%
GeneOne Life Sciences | Common stock |  |
Related Party Transaction [Line Items] |  |
Number of shares owned (shares) | 1,644,155 | 1,644,155
Plumbline Life Sciences |  |
Related Party Transaction [Line Items] |  |
Percentage of ownership | 15.00% | 15.10%
Plumbline Life Sciences | Common stock |  |
Related Party Transaction [Line Items] |  |
Number of shares owned (shares) | 395,758 | 395,758

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