Quarterly report pursuant to Section 13 or 15(d)

Licenses Acquired - Mustang expenses (Details)

v3.19.3
Licenses Acquired - Mustang expenses (Details) - USD ($)
$ in Thousands
 3 Months Ended 9 Months Ended
Sep. 30, 2019
Sep. 30, 2018
Sep. 30, 2019
Sep. 30, 2018
Research and Development Arrangement, Contract to Perform for Others [Line Items]        
Total licenses acquired expense $ 700 $ 3,706 $ 1,350 $ 3,804
CSI City of Hope Milestone (MB-104) [Member]        
Research and Development Arrangement, Contract to Perform for Others [Line Items]        
Total licenses acquired expense     200  
Manufacturing License [Member]        
Research and Development Arrangement, Contract to Perform for Others [Line Items]        
Total licenses acquired expense       75
UCLA [Member]        
Research and Development Arrangement, Contract to Perform for Others [Line Items]        
Total licenses acquired expense 300   300  
Checkpoint [Member]        
Research and Development Arrangement, Contract to Perform for Others [Line Items]        
Total licenses acquired expense   1,000   1,000
Checkpoint [Member] | Dana Farber License CK-301 [Member]        
Research and Development Arrangement, Contract to Perform for Others [Line Items]        
Total licenses acquired expense   1,000   1,000
Mustang [Member]        
Research and Development Arrangement, Contract to Perform for Others [Line Items]        
Total licenses acquired expense 700 1,000 1,350 1,075
Mustang [Member] | City of Hope (COH) - CD123 (MB-102) [Member]        
Research and Development Arrangement, Contract to Perform for Others [Line Items]        
Total licenses acquired expense     250  
Mustang [Member] | PSCA License [Member]        
Research and Development Arrangement, Contract to Perform for Others [Line Items]        
Total licenses acquired expense 200   200  
Mustang [Member] | License with Calimmune [Member]        
Research and Development Arrangement, Contract to Perform for Others [Line Items]        
Total licenses acquired expense $ 200   200  
Mustang [Member] | XSCID License St Judes [Member]        
Research and Development Arrangement, Contract to Perform for Others [Line Items]        
Total licenses acquired expense   $ 1,000   $ 1,000
Mustang [Member] | Nationwide Children's Hospital - C134 [Member]        
Research and Development Arrangement, Contract to Perform for Others [Line Items]        
Total licenses acquired expense     $ 200