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Royalty and Commercial Payment Purchase Agreements (Tables) | 3 Months Ended
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Mar. 31, 2024
Royalty and Commercial Payment Purchase Agreements |
Summary of royalty and commercial payment receivable activities | The following table summarizes the royalty and commercial payment receivable activities during the three months ended March 31, 2024 (in thousands):
​ | ​ | ​ | ​ | ​ | ​
​ | ​ | Short-Term | Long-Term
Balance as of January 1, 2024 |  | $ | 14,215 | $ | 57,952
Acquisition of royalty and commercial payment receivables: | ​ | ​ | ​ | ​ | ​
Talphera | ​ |  | — |  | 8,000
Receipt of royalty and commercial payments: | ​ | ​ | ​ | ​ | ​
Affitech | ​ | ​ | (7,396) | ​ | —
Aptevo | ​ | ​ | (350) | ​ | —
Talphera | ​ | ​ | — | ​ | (25)
Reclassification to short-term royalty and commercial payment receivables: | ​ | ​ | ​ | ​ | ​
Aptevo | ​ | ​ | 350 | ​ | (350)
Recognition of contingent consideration: | ​ | ​ | ​ | ​ | ​
Affitech | ​ | ​ | 3,000 | ​ | —
Balance as of March 31, 2024 | ​ | $ | 9,819 | $ | 65,577
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