Annual report pursuant to Section 13 and 15(d)

Related Party Transactions (Schedule of Equity Fees) (Details)

v3.21.1
Related Party Transactions (Schedule of Equity Fees) (Details) - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2020
Dec. 31, 2019
Dividends receivable $ (13,061) $ (7,589)
Dividends Current $ 0 0
Aevitas [Member]    
PIK Dividend date January 1  
Partner companies dividend $ 11 6
Caelum [Member]    
PIK Dividend date January 1  
Partner companies dividend $ 0 0
Cellvation [Member]    
PIK Dividend date January 1  
Partner companies dividend $ 7 7
Helocyte [Member]    
PIK Dividend date January 1  
Partner companies dividend $ 138 131
Mustang [Member]    
PIK Dividend date January 1  
Partner companies dividend $ 7,577 4,923
Checkpoint [Member]    
PIK Dividend date January 1  
Partner companies dividend $ 4,617 2,510
Cyprium [Member]    
PIK Dividend date January 1  
Partner companies dividend $ 711 5
Tamid [Member]    
PIK Dividend date January 1  
Partner companies dividend $ 0 $ 7