Royalty Monetizations - Schedule of Royalty Financing Obligations (Details) - USD ($) $ in Thousands	3 Months Ended
Sep. 30, 2023	Jun. 30, 2023	Mar. 31, 2023
Royalty Montizations [Roll Forward]
Balance	$ 526,121	$ 514,411	$ 501,655
Non-cash Interest expense on Royalty financing obligations	17,272	19,486	19,318
Royalty revenues paid and payable	(8,207)	(7,776)	(6,562)
Balance	535,186	526,121	514,411
2020 RPI Royalty Agreement
Royalty Montizations [Roll Forward]
Balance	170,649	168,252	164,981
Non-cash Interest expense on Royalty financing obligations	9,647	9,552	9,309
Royalty revenues paid and payable	(7,553)	(7,155)	(6,038)
Balance	$ 172,743	$ 170,649	168,252
Effective interest rate	22.10%	22.20%
2021 RPI Royalty Agreement
Royalty Montizations [Roll Forward]
Balance	$ 183,626	$ 178,807	173,651
Non-cash Interest expense on Royalty financing obligations	3,068	5,440	5,680
Royalty revenues paid and payable	(654)	(621)	(524)
Balance	$ 186,040	$ 183,626	178,807
Effective interest rate	0.00%	10.00%
OMERS Royalty Agreement
Royalty Montizations [Roll Forward]
Balance	$ 171,846	$ 167,352	163,023
Non-cash Interest expense on Royalty financing obligations	4,557	4,494	4,329
Royalty revenues paid and payable	0	0	0
Balance	$ 176,403	$ 171,846	$ 167,352
Effective interest rate	10.20%	10.60%

Royalty Montizations [Roll Forward]