Quarterly report pursuant to Section 13 or 15(d)

Note 3 - Revenue - Disaggregation of Revenue (Details)

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Note 3 - Revenue - Disaggregation of Revenue (Details) - USD ($)
$ in Thousands
 3 Months Ended 6 Months Ended
Jun. 30, 2023
Jun. 30, 2022
Jun. 30, 2023
Jun. 30, 2022
Total revenue $ 20,055 $ 3,698 $ 21,991 $ 14,686
Seattle Genetics Inc. [Member]        
Total revenue 3,486 2,607 4,909 2,919
Astra Zeneca A B [Member]        
Total revenue 4,056 (130) 4,490 4,623
Les Laboratoires Servier And Institut De Recherches Internationales Servier [Member]        
Total revenue (31) 230 (105) 4,964
Genentech [Member]        
Total revenue $ 12,544 $ 991 $ 12,697 $ 2,180