Quarterly report pursuant to Section 13 or 15(d)

Related Party Transactions - Schedule of Effective Date and Equity Fee Payable (Details)

v3.19.2
Related Party Transactions - Schedule of Effective Date and Equity Fee Payable (Details)
 6 Months Ended
Jun. 30, 2019
Helocyte Inc [Member]  
Related Party Transaction [Line Items]  
Dividends Paid in kind percentage 2.50%
Dividends Payable, Date Declared Mar. 20, 2015
Avenue Therapeutics, Inc. [Member]  
Related Party Transaction [Line Items]  
Dividends Paid in kind percentage 0.00%
Dividends Payable, Date Declared Feb. 17, 2015
Mustang Bio, Inc [Member]  
Related Party Transaction [Line Items]  
Dividends Paid in kind percentage 2.50%
Dividends Payable, Date Declared Mar. 13, 2015
Checkpoint Therapeutics, Inc [Member]  
Related Party Transaction [Line Items]  
Dividends Paid in kind percentage 0.00%
Dividends Payable, Date Declared Mar. 17, 2015
Cellvation Inc [Member]  
Related Party Transaction [Line Items]  
Dividends Paid in kind percentage 2.50%
Dividends Payable, Date Declared Oct. 31, 2016
Caelum Bio sciences Inc [Member]  
Related Party Transaction [Line Items]  
Dividends Paid in kind percentage 0.00%
Dividends Payable, Date Declared Jan. 01, 2017
Cyprium Bio sciences Inc [Member]  
Related Party Transaction [Line Items]  
Dividends Paid in kind percentage 2.50%
Dividends Payable, Date Declared Mar. 13, 2017
Aevitas Inc [Member]  
Related Party Transaction [Line Items]  
Dividends Paid in kind percentage 2.50%
Dividends Payable, Date Declared Jul. 28, 2017
Tamid [Member]  
Related Party Transaction [Line Items]  
Dividends Paid in kind percentage 2.50%
Dividends Payable, Date Declared Nov. 30, 2017