Annual report pursuant to Section 13 and 15(d)

Royalty and Commercial Payment Purchase Agreements - Summary (Details)

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Royalty and Commercial Payment Purchase Agreements - Summary (Details) - USD ($)
$ in Thousands
Dec. 31, 2022
Dec. 31, 2021
Dec. 31, 2020
Agreements      
Short-term royalty and commercial payment receivables $ 2,366 $ 0  
Long-term royalty and commercial payment receivables $ 63,683 $ 69,075 $ 34,575