Quarterly report pursuant to Section 13 or 15(d)

Clinical Trial and Sponsored Research Agreements (City of Hope - Licenses) (Narrative) (Details)

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Clinical Trial and Sponsored Research Agreements (City of Hope - Licenses) (Narrative) (Details) - USD ($)
$ in Thousands
3 Months Ended 6 Months Ended
Jun. 30, 2022
Jun. 30, 2021
Jun. 30, 2022
Jun. 30, 2021
Collaborative Arrangements and Non-collaborative Arrangement Transactions [Line Items]        
Research and development - licenses acquired   $ 1,000 $ 0 $ 1,000
CD123 (MB-102) [Member] | City of Hope National Medical Center ("COH") [Member]        
Collaborative Arrangements and Non-collaborative Arrangement Transactions [Line Items]        
Non-refundable milestone payments $ 0 300 0 300
Car T Technology [Member] | Mayo Clinic [Member]        
Collaborative Arrangements and Non-collaborative Arrangement Transactions [Line Items]        
Research and development - licenses acquired $ 0 $ 800 $ 0 $ 800