Quarterly report pursuant to Section 13 or 15(d)

Clinical Trial and Sponsored Research Agreements (Sponsored Research and Clinical Trial Agreements) (Details)

v3.22.1
Clinical Trial and Sponsored Research Agreements (Sponsored Research and Clinical Trial Agreements) (Details) - USD ($)
$ in Thousands
3 Months Ended
Mar. 31, 2022
Mar. 31, 2021
Collaborative Arrangements and Non-collaborative Arrangement Transactions [Line Items]    
Research and development expense $ 16,289 $ 11,618
Sponsored Research and Clinical Trial Agreements [Member]    
Collaborative Arrangements and Non-collaborative Arrangement Transactions [Line Items]    
Research and development expense 1,592 1,842
City of Hope National Medical Center ("COH") [Member] | Sponsored Research and Clinical Trial Agreements [Member]    
Collaborative Arrangements and Non-collaborative Arrangement Transactions [Line Items]    
Research and development expense 0 0
Mayo Clinic [Member] | Sponsored Research and Clinical Trial Agreements [Member]    
Collaborative Arrangements and Non-collaborative Arrangement Transactions [Line Items]    
Research and development expense 231 0
CD123 (MB-102) [Member] | City of Hope National Medical Center ("COH") [Member] | Sponsored Research and Clinical Trial Agreements [Member]    
Collaborative Arrangements and Non-collaborative Arrangement Transactions [Line Items]    
Research and development expense 51 205
IL13Ra2 (MB-101) [Member] | City of Hope National Medical Center ("COH") [Member] | Sponsored Research and Clinical Trial Agreements [Member]    
Collaborative Arrangements and Non-collaborative Arrangement Transactions [Line Items]    
Research and development expense 228 514
CS1 (MB-104) [Member] | City of Hope National Medical Center ("COH") [Member] | Sponsored Research and Clinical Trial Agreements [Member]    
Collaborative Arrangements and Non-collaborative Arrangement Transactions [Line Items]    
Research and development expense 50 175
HER2 (MB 103) [Member] | City of Hope National Medical Center ("COH") [Member] | Sponsored Research and Clinical Trial Agreements [Member]    
Collaborative Arrangements and Non-collaborative Arrangement Transactions [Line Items]    
Research and development expense 271 123
PSCA (MB-105) [Member] | City of Hope National Medical Center ("COH") [Member] | Sponsored Research and Clinical Trial Agreements [Member]    
Collaborative Arrangements and Non-collaborative Arrangement Transactions [Line Items]    
Research and development expense 22 50
CD20 (MB-106) [Member] | Fred Hutchinson Cancer Research Center [Member] | Sponsored Research and Clinical Trial Agreements [Member]    
Collaborative Arrangements and Non-collaborative Arrangement Transactions [Line Items]    
Research and development expense 488 671
ST. Jude - XSCID [Member] | St. Jude Children's Research Hospital [Member] | Sponsored Research and Clinical Trial Agreements [Member]    
Collaborative Arrangements and Non-collaborative Arrangement Transactions [Line Items]    
Research and development expense 124 104
RAG1 SCID (MB-110) [Member] | Leiden University Medical Centre [Member] | Sponsored Research and Clinical Trial Agreements [Member]    
Collaborative Arrangements and Non-collaborative Arrangement Transactions [Line Items]    
Research and development expense $ 127 $ 0