Annual report pursuant to Section 13 and 15(d)

Royalty and Commercial Payment Purchase Agreements - Aptevo (Details)

v3.24.0.1
Royalty and Commercial Payment Purchase Agreements - Aptevo (Details) - USD ($)
 1 Months Ended 12 Months Ended
Mar. 29, 2023
Jun. 30, 2023
Dec. 31, 2023
Dec. 31, 2022
Mar. 31, 2023
Agreements          
Payments of consideration under RPAs, AAAs and CPPAs     $ 14,650,000 $ 8,000,000  
Contingent consideration under RPAs, AAAs and CPPAs     7,000,000 75,000  
Receipts under RPAs, AAAs and CPPAs     13,956,000 3,026,000  
Short-term royalty and commercial payment receivables     14,215,000 $ 2,366,000  
Aptevo          
Agreements          
Acquisition of royalty and commercial payment receivables, Long-Term     9,650,000    
Receipt of royalty and commercial payments, Long-Term     (1,673,000)    
Aptevo | Commercial Payment Purchase Agreement          
Agreements          
Maximum milestone payments entitled to receive $ 5,300,000        
Acquisition of royalty and commercial payment receivables, Long-Term 9,700,000        
Payments of consideration under RPAs, AAAs and CPPAs 9,600,000 $ 50,000      
Maximum commercial sales milestone payments 50,000        
Commercial payments attributable to net sales threshold 500,000        
Contingent consideration under RPAs, AAAs and CPPAs $ 50,000   0   $ 50,000
Receipts under RPAs, AAAs and CPPAs     1,700,000    
Short-term royalty and commercial payment receivables     2,000,000.0    
Amount of allowance for credit losses     $ 0    
Aptevo | Commercial Payment Purchase Agreement | Minimum          
Agreements          
Receipts under RPAs, AAAs and CPPAs   $ 500,000