v3.26.1
Segment - Schedule of Revenue and Expenses (Details) - USD ($)
$ in Thousands
 12 Months Ended
Dec. 31, 2025
Dec. 31, 2024
Segment Reporting Information [Line Items]    
Total revenue $ 76,201 $ 138,103
General research and development expenses 7,495 16,288
Total external costs 35,805 51,201
Internal costs 32,923 32,181
Research and development expenses 68,728 83,382
General and administrative expenses 29,837 29,726
Total operating expenses 98,565 113,108
Income (loss) from operations (22,364) 24,995
Interest income 5,206 7,136
Other income (expense), net 28 (38)
Income (loss) before income taxes (17,130) 32,093
Provision for income taxes 238 224
Net income (loss) (17,368) 31,869
CX-904 (EGFRxCD3)    
Segment Reporting Information [Line Items]    
Total external costs 459 7,487
Varseta-M    
Segment Reporting Information [Line Items]    
Total external costs 24,302 17,846
CX-801 (IFNAlpha2b)    
Segment Reporting Information [Line Items]    
Total external costs 1,627 2,505
Other Wholly Owned and Partnered Programs    
Segment Reporting Information [Line Items]    
Total external costs $ 1,922 $ 7,075