Quarterly report pursuant to Section 13 or 15(d)

Non-Controlling Interests - Summary Of Non-controlling Interests in Consolidated Entities (Detail)

v3.7.0.1
Non-Controlling Interests - Summary Of Non-controlling Interests in Consolidated Entities (Detail) - USD ($)
$ in Thousands
 3 Months Ended 6 Months Ended 12 Months Ended
Jun. 30, 2017
Jun. 30, 2016
Jun. 30, 2017
Jun. 30, 2016
Dec. 31, 2016
Noncontrolling Interest [Line Items]          
NCI equity share     $ 86,509   $ 60,668
Net loss attributed to non-controlling interests $ (5,584) $ (3,911) (8,164) $ (8,349) (16,195)
Non-controlling interests in consolidated entities 78,345   78,345   44,473
Avenue [Member]          
Noncontrolling Interest [Line Items]          
NCI equity share     3,089   (494)
Net loss attributed to non-controlling interests (246) (76) (314) (184) (349)
Non-controlling interests in consolidated entities 2,775   2,775   (843)
Coronado SO Co, Inc [Member]          
Noncontrolling Interest [Line Items]          
NCI equity share     (236)   (217)
Net loss attributed to non-controlling interests (3) (5) (7) (10) (19)
Non-controlling interests in consolidated entities (243)   (243)   (236)
Mustang Therapeutics, Inc [Member]          
Noncontrolling Interest [Line Items]          
NCI equity share     47,009   12,376
Net loss attributed to non-controlling interests (3,353) (89) (5,027) (159) (1,805)
Non-controlling interests in consolidated entities 41,982   41,982   10,571
Checkpoint Therapeutics, Inc [Member]          
Noncontrolling Interest [Line Items]          
NCI equity share     22,026   32,160
Net loss attributed to non-controlling interests (3,972) [1] (3,476) (6,707) [1] (7,513) (11,733)
Non-controlling interests in consolidated entities 15,319   15,319   20,427
JMC [Member]          
Noncontrolling Interest [Line Items]          
NCI equity share     (570)   (192)
Net loss attributed to non-controlling interests 20 (108) (48) (229) (355)
Non-controlling interests in consolidated entities (618)   (618)   (547)
Helocyte [Member]          
Noncontrolling Interest [Line Items]          
NCI equity share     (1,677)   (612)
Net loss attributed to non-controlling interests (276) $ (157) (599) $ (254) (1,155)
Non-controlling interests in consolidated entities (2,276)   (2,276)   (1,767)
Cellvation [Member]          
Noncontrolling Interest [Line Items]          
NCI equity share     (151)   4
Net loss attributed to non-controlling interests (30)   (83)   (158)
Non-controlling interests in consolidated entities (234)   (234)   (154)
Caelum [Member]          
Noncontrolling Interest [Line Items]          
NCI equity share     (3)    
Net loss attributed to non-controlling interests (106)   (251)    
Non-controlling interests in consolidated entities (254)   (254)    
National Holdings [Member]          
Noncontrolling Interest [Line Items]          
NCI equity share     17,022   17,643
Net loss attributed to non-controlling interests 2,382   4,872   (621)
Non-controlling interests in consolidated entities $ 21,894   $ 21,894   $ 17,022
[1] Checkpoint is consolidated with Fortress’s operations because Fortress maintains voting control through its ownership of Checkpoint’s Class A common shares which provide for super-majority voting rights.