Quarterly report pursuant to Section 13 or 15(d)

Licenses Acquired (Schedule of Research and Development for Licenses Acquired) (Details)

v3.21.2
Licenses Acquired (Schedule of Research and Development for Licenses Acquired) (Details) - USD ($)
$ in Thousands
 3 Months Ended 9 Months Ended
Sep. 30, 2021
Sep. 30, 2020
Sep. 30, 2021
Sep. 30, 2020
Research and Development Arrangement, Contract to Perform for Others [Line Items]        
Research and development - licenses acquired $ 713 $ 458 $ 15,585 $ 2,278
Licensing Agreements [Member]        
Research and Development Arrangement, Contract to Perform for Others [Line Items]        
Research and development - licenses acquired 713 458 15,585 2,278
Licensing Agreements [Member] | Journey [Member]        
Research and Development Arrangement, Contract to Perform for Others [Line Items]        
Research and development - licenses acquired 76   13,819  
Licensing Agreements [Member] | Mustang [Member]        
Research and Development Arrangement, Contract to Perform for Others [Line Items]        
Research and development - licenses acquired 630 287 1,630 1,837
Licensing Agreements [Member] | Aevitas [Member]        
Research and Development Arrangement, Contract to Perform for Others [Line Items]        
Research and development - licenses acquired 7 162 34 162
Licensing Agreements [Member] | Baergic [Member]        
Research and Development Arrangement, Contract to Perform for Others [Line Items]        
Research and development - licenses acquired   8 0 8
Licensing Agreements [Member] | Oncogenuity [Member]        
Research and Development Arrangement, Contract to Perform for Others [Line Items]        
Research and development - licenses acquired   1 1 271
Licensing Agreements [Member] | FBIO Acquisition Corp VIII [Member]        
Research and Development Arrangement, Contract to Perform for Others [Line Items]        
Research and development - licenses acquired     101  
Licensing Agreements [Member] | City of Hope (COH) [Member] | Mustang [Member] | MB-102 (CD 123 CAR T for AML) [Member]        
Research and Development Arrangement, Contract to Perform for Others [Line Items]        
Research and development - licenses acquired     250 334
Licensing Agreements [Member] | City of Hope (COH) [Member] | Mustang [Member] | MB-101 (IL13R2 CAR T for Glioblastoma) [Member]        
Research and Development Arrangement, Contract to Perform for Others [Line Items]        
Research and development - licenses acquired       333
Licensing Agreements [Member] | City of Hope (COH) [Member] | Mustang [Member] | MB-103 (HER2 CAR T) [Member]        
Research and Development Arrangement, Contract to Perform for Others [Line Items]        
Research and development - licenses acquired       250
Licensing Agreements [Member] | City of Hope (COH) [Member] | Mustang [Member] | MB-105 (PSCA CAR T) [Member]        
Research and Development Arrangement, Contract to Perform for Others [Line Items]        
Research and development - licenses acquired 250   250  
Licensing Agreements [Member] | City of Hope (COH) [Member] | Mustang [Member] | Spacer [Member]        
Research and Development Arrangement, Contract to Perform for Others [Line Items]        
Research and development - licenses acquired       333
Licensing Agreements [Member] | Mayo Clinic [Member] | Mustang [Member]        
Research and Development Arrangement, Contract to Perform for Others [Line Items]        
Research and development - licenses acquired     750  
Licensing Agreements [Member] | Fred Hutchinson Cancer Research Center [Member] | Mustang [Member] | MB-106 (CD20 CAR T) [Member]        
Research and Development Arrangement, Contract to Perform for Others [Line Items]        
Research and development - licenses acquired       300
Licensing Agreements [Member] | Leiden University Medical Centre [Member] | Mustang [Member]        
Research and Development Arrangement, Contract to Perform for Others [Line Items]        
Research and development - licenses acquired 350   350  
Licensing Agreements [Member] | CSL Behring [Member] | Mustang [Member]        
Research and Development Arrangement, Contract to Perform for Others [Line Items]        
Research and development - licenses acquired $ 30 170 $ 30 170
Licensing Agreements [Member] | SIRION Biotech [Member] | Mustang [Member]        
Research and Development Arrangement, Contract to Perform for Others [Line Items]        
Research and development - licenses acquired   $ 117   $ 117