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UCB Option and License Agreement - Narrative (Details) - USD ($)
$ in Thousands
3 Months Ended 6 Months Ended
Jun. 30, 2023
Jun. 30, 2022
Jun. 30, 2023
Jun. 30, 2022
Dec. 31, 2022
Disaggregation of Revenue [Line Items]          
Collaboration revenue $ 781 $ 0 $ 1,464 $ 0  
Current portion of deferred revenue 2,039   2,039   $ 2,818
UCB | License          
Disaggregation of Revenue [Line Items]          
Upfront payment 3,500   3,500   5,000
Milestone payments         98,500
Transaction price         $ 5,000
Collaboration revenue 800   1,500    
Current portion of deferred revenue $ 2,000   $ 2,000