Royalty Financing Obligations - Schedule of Royalty Financing Obligations (Details) - USD ($) $ in Thousands	3 Months Ended	9 Months Ended
Sep. 30, 2025	Jun. 30, 2025	Mar. 31, 2025	Sep. 30, 2025	Sep. 30, 2024
Royalty Montizations [Roll Forward]
Balance	$ 483,583	$ 500,918	$ 513,729	$ 513,729
Non-cash interest expense on royalty financing obligations	12,923	13,402	13,514	39,839	$ 42,469
Royalty revenues payable	(19,713)	(30,737)	(26,325)
Balance	476,793	483,583	500,918	476,793
2020 RPI Royalty Agreement
Royalty Montizations [Roll Forward]
Balance	174,357	178,351	180,413	180,413
Non-cash interest expense on royalty financing obligations	9,610	9,804	9,756
Royalty revenues payable	(8,258)	(13,798)	(11,818)
Balance	$ 175,709	174,357	178,351	$ 175,709
Effective interest rate	21.60%			21.60%
2021 RPI Royalty Agreement
Royalty Montizations [Roll Forward]
Balance	$ 178,926	180,119	181,140	$ 181,140
Non-cash interest expense on royalty financing obligations	0	0	0
Royalty revenues payable	(2,195)	(1,193)	(1,021)
Balance	$ 176,731	178,926	180,119	$ 176,731
Effective interest rate	0.00%			0.00%
OMERS Royalty Agreement
Royalty Montizations [Roll Forward]
Balance	$ 130,300	142,448	152,176	$ 152,176
Non-cash interest expense on royalty financing obligations	3,313	3,598	3,758
Royalty revenues payable	(9,260)	(15,746)	(13,486)
Balance	$ 124,353	$ 130,300	$ 142,448	$ 124,353
Effective interest rate	10.10%			10.10%