Annual report pursuant to Section 13 and 15(d)

Related Party Transactions - Schedule of dividend or equity fee recorded by the Company (Detail)

v3.19.1
Related Party Transactions - Schedule of dividend or equity fee recorded by the Company (Detail) - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2018
Dec. 31, 2017
Dividends Payable, Current $ 0 [1] $ 0 [2]
Aevitas [Member]    
Dividends Payable Date Of Record Description January 1  
Dividends Payable, Current $ 6 [1] 0 [2]
Avenue [Member]    
Dividends Payable Date Of Record Description [1],[3] January 1  
Dividends Payable, Current [1],[3] $ 0 1,103
Caelum [Member]    
Dividends Payable Date Of Record Description January 1  
Dividends Payable, Current $ 462 [1] 302 [2]
Cellvation [Member]    
Dividends Payable Date Of Record Description January 1  
Dividends Payable, Current $ 5 [1] 8 [2]
Checkpoint [Member]    
Dividends Payable Date Of Record Description March 17  
Dividends Payable, Current $ 1,748 [1] 2,296 [2]
Cyprium [Member]    
Dividends Payable Date Of Record Description January 1  
Dividends Payable, Current $ 3 [1] 1 [2]
Helocyte [Member]    
Dividends Payable Date Of Record Description January 1  
Dividends Payable, Current $ 167 [1] 321 [2]
Mustang [Member]    
Dividends Payable Date Of Record Description January 1  
Dividends Payable, Current $ 2,085 [1] 9,479 [2]
Tamid [Member]    
Dividends Payable Date Of Record Description January 1  
Dividends Payable, Current $ 15 [1] 0 [2]
Fortress [Member]    
Dividends Payable, Current $ (4,491) [1] $ (13,510) [2]
[1] Includes 2019 PIK dividend accrued for the year ended December 31, 2018, as Type 1 subsequent event
[2] Includes 2018 PIK dividend accrued for the year ended December 31, 2017, as Type 1 subsequent event
[3] Pursuant to the terms of the agreement between Avenue and InvaGen Pharmaceuticals, Inc. during the option period PIK dividends will not be paid nor accrued.