| Related Party Transactions (Management Services Agreement) (Details) | 3 Months Ended | 
|---|---|
| Mar. 31, 2023 | |
| Aevitas [Member] | |
| Related Party Transaction [Line Items] | |
| Effective date | Jul. 28, 2017 | 
| Avenue Therapeutics, Inc [Member] | |
| Related Party Transaction [Line Items] | |
| Effective date | Feb. 17, 2015 | 
| Baergic [Member] | |
| Related Party Transaction [Line Items] | |
| Effective date | Mar. 09, 2017 | 
| Cellvation [Member] | |
| Related Party Transaction [Line Items] | |
| Effective date | Oct. 31, 2016 | 
| Checkpoint [Member] | |
| Related Party Transaction [Line Items] | |
| Effective date | Mar. 17, 2015 | 
| Cyprium [Member] | |
| Related Party Transaction [Line Items] | |
| Effective date | Mar. 13, 2017 | 
| Helocyte [Member] | |
| Related Party Transaction [Line Items] | |
| Effective date | Mar. 20, 2015 | 
| Mustang | |
| Related Party Transaction [Line Items] | |
| Effective date | Mar. 13, 2015 | 
| Oncogenuity [Member] | |
| Related Party Transaction [Line Items] | |
| Effective date | Feb. 10, 2017 | 
| Urica | |
| Related Party Transaction [Line Items] | |
| Effective date | Nov. 07, 2017 | 
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