Quarterly report pursuant to Section 13 or 15(d)

License, Clinical Trial and Sponsored Research Agreements - Sponsored (Details)

v3.20.1
License, Clinical Trial and Sponsored Research Agreements - Sponsored (Details) - USD ($)
$ in Thousands
3 Months Ended
Mar. 31, 2020
Mar. 31, 2019
Collaborative Arrangements and Non-collaborative Arrangement Transactions [Line Items]    
Research and development $ 9,314 $ 6,960
Sponsored Research And Clinical Trial Agreements    
Collaborative Arrangements and Non-collaborative Arrangement Transactions [Line Items]    
Research and development 1,349 1,595
City Of Hope National Medical Center ("COH") [Member] | Sponsored Research And Clinical Trial Agreements    
Collaborative Arrangements and Non-collaborative Arrangement Transactions [Line Items]    
Research and development 500 500
Fred Hutchinson Cancer Research Center - CD20 | Sponsored Research And Clinical Trial Agreements    
Collaborative Arrangements and Non-collaborative Arrangement Transactions [Line Items]    
Research and development 527 267
Beth Israel Deaconess Medical Center - CRISPR | Sponsored Research And Clinical Trial Agreements    
Collaborative Arrangements and Non-collaborative Arrangement Transactions [Line Items]    
Research and development 0 69
CD123 Product Or Process [Member] | City Of Hope National Medical Center ("COH") [Member] | Sponsored Research And Clinical Trial Agreements    
Collaborative Arrangements and Non-collaborative Arrangement Transactions [Line Items]    
Research and development 230 303
Il13r2 Product [Member] | City Of Hope National Medical Center ("COH") [Member] | Sponsored Research And Clinical Trial Agreements    
Collaborative Arrangements and Non-collaborative Arrangement Transactions [Line Items]    
Research and development $ 92 342
Manufacturing | City Of Hope National Medical Center ("COH") [Member] | Sponsored Research And Clinical Trial Agreements    
Collaborative Arrangements and Non-collaborative Arrangement Transactions [Line Items]    
Research and development   $ 114