Quarterly report pursuant to Section 13 or 15(d)

Note 3 - Revenue (Details Textual)

v3.23.2
Note 3 - Revenue (Details Textual)
$ / shares in Units, $ in Thousands
1 Months Ended 3 Months Ended 6 Months Ended 12 Months Ended
May 19, 2021
USD ($)
Apr. 24, 2021
USD ($)
Mar. 24, 2021
USD ($)
$ / shares
shares
Feb. 08, 2018
USD ($)
Jan. 31, 2023
USD ($)
Jun. 30, 2023
USD ($)
Jun. 30, 2022
USD ($)
Mar. 31, 2022
USD ($)
Jun. 30, 2023
USD ($)
Jun. 30, 2022
USD ($)
Dec. 31, 2022
USD ($)
Dec. 31, 2017
Jan. 01, 2019
USD ($)
May 02, 2017
USD ($)
Contract with Customer, Liability, Revenue Recognized           $ 19,900     $ 21,600          
Contract with Customer, Liability, Current           17,683     17,683   $ 20,824      
Contract with Customer, Liability, Noncurrent           759     759   18,734      
Increase (Decrease) in Contract with Customer, Liability           0     0          
Genentech [Member]                            
Number Of Initial Research Programs 2                          
Contract with Customer, Liability, Revenue Recognized           12,500                
Revenue from Contract with Customer, Collaboration Fee On Additional Program $ 10,000                          
Number Of Optional Additional Research Programs 2                          
Seattle Genetics Inc. [Member]                            
Number of Performance Obligations       3                    
Amended Collaboration Agreement, Resale of Stock, Period (Day)     60 days                      
Seattle Genetics Inc. [Member] | Private Placement [Member]                            
Contract with Customer, Liability, Total     $ 3,300                      
Sale of Stock, Number of Shares Issued in Transaction (in shares) | shares     3,706,174                      
Sale of Stock, Consideration Received on Transaction     $ 13,000                      
Sale of Stock, Price Per Share (in dollars per share) | $ / shares     $ 3.51                      
Sale of Stock, Fair Value, Price Per Share (in dollars per share) | $ / shares     $ 2.61                      
Seattle Genetics Inc. [Member] | License and Collaboration Agreement [Member]                            
Number of Research Programs     3 3                    
Revenue from Contract with Customer, Period After Effective Date Agreements May Be Terminated (Month)       12 months                    
Revenue from Contract with Customer, Agreement Termination Advance Notice Period (Day)       90 days                    
Revenue from Contract with Customer, Agreement Termination Advance Notice Period If Marketing Approval Obtained (Day)       180 days                    
Revenue from Contract with Customer, Agreement Termination Notice Period Upon Material Breach (Day)       90 days                    
Revenue from Contract with Customer, Agreement Termination, Additional Notice Period Upon Material Breach (Day)       90 days                    
Number Of Licenses       3                    
Number Of Swap Options       2                    
Number of Performance Obligations       6                    
Revenue, Remaining Performance Obligation, Amount           10,400     10,400          
Seattle Genetics Inc. [Member] | Other Arrangement [Member]                            
Number of Research Programs       2                    
Seattle Genetics Inc. [Member] | Up-front Payment Arrangement [Member]                            
Contract with Customer, Liability, Total       $ 1,200,000                    
Research and Development Arrangement, Contract to Perform for Others, Compensation Earned       $ 4,900                    
Seattle Genetics Inc. [Member] | Platform Technology License [Member]                            
Number of Performance Obligations       3                    
Number of Target Programs       3                    
Seattle Genetics Inc. [Member] | Antibody Target Swap [Member]                            
Number of Performance Obligations       2                    
Seattle Genetics Inc. [Member] | Governance Committee Participation [Member]                            
Number of Performance Obligations       1                    
Seattle Genetics Inc. [Member] | Collaborative Arrangement [Member]                            
Revenue from Contract with Customer, Excluding Assessed Tax         $ 5,000           5,000      
Contract with Customer, Liability, Current           9,400     9,400          
Contract with Customer, Liability, Noncurrent           800     800          
Astra Zeneca A B [Member]                            
Capitalized Contract Cost, Net, Total           100     100          
Capitalized Contract Cost, Amortization           100 $ 200   100 $ 200        
Astra Zeneca A B [Member] | Accounting Standards Update 2014-09 [Member]                            
Capitalized Contract Cost, Net, Total                           $ 1,600
Capitalized Contract Cost, Gross                         $ 1,100  
Astra Zeneca A B [Member] | License and Collaboration Agreement [Member]                            
Contract with Customer, Liability, Revenue Recognized           4,000         $ 9,700      
Contract with Customer, Liability, Current           3,500     3,500          
Astra Zeneca A B [Member] | License and Collaboration Agreement [Member] | Maximum [Member]                            
Number of Collaboration Products                           4
Astra Zeneca A B [Member] | License and Collaboration Agreement [Member] | Minimum [Member]                            
Number of Collaboration Products                           2
Les Laboratoires Servier And Institut De Recherches Internationales Servier [Member]                            
Contract with Customer, Liability, Revenue Recognized               $ 4,900            
Number of Programs                       4    
Number of Novel Proteins                       1    
Les Laboratoires Servier And Institut De Recherches Internationales Servier [Member] | License and Collaboration Agreement [Member]                            
Contract with Customer, Liability, Current           $ 4,700     $ 4,700          
Number of Programs                       5    
License [Member] | Genentech [Member]                            
Contract with Customer, Liability, Total $ 20,000                          
Contract with Customer, Liability, Noncurrent             $ 0     $ 0        
License [Member] | B P Assets X I I Inc [Member] | Exclusive Product License Agreement [Member]                            
Contract with Customer, Liability, Total   $ 10,000                        
Revenue from Contract with Customer, Contribution Towards Manufacturing Activities   $ 4,000                        
License [Member] | Seattle Genetics Inc. [Member] | Up-front Payment Arrangement [Member]                            
Revenue from Contract with Customer, Excluding Assessed Tax       $ 30,000