Finance Receivables - Schedule of Nonaccrual and Performing Finance Receivables (Details) - USD ($) $ in Thousands	Jun. 30, 2025	Dec. 31, 2024	Jun. 30, 2024	Dec. 31, 2023
Financing Receivable, Nonaccrual [Line Items]
Total before allowance for credit losses	$ 246,430	$ 289,009
Allowance for credit losses	(8,826)	(11,249)	$ (13,078)	$ (13,901)
Total carrying value	237,604	277,760
Term loans
Financing Receivable, Nonaccrual [Line Items]
Total before allowance for credit losses	234,118	224,073
Allowance for credit losses	(6,979)	(7,158)	(8,787)	(9,731)
Royalty purchases
Financing Receivable, Nonaccrual [Line Items]
Total before allowance for credit losses	12,312	64,936
Allowance for credit losses	(1,847)	(4,091)	$ (4,291)	$ (4,170)
Nonaccrual
Financing Receivable, Nonaccrual [Line Items]
Total before allowance for credit losses	12,312	14,830
Allowance for credit losses	(1,847)	(2,075)
Total carrying value	10,465	12,755
Nonaccrual | Term loans
Financing Receivable, Nonaccrual [Line Items]
Total before allowance for credit losses	0	1,000
Nonaccrual | Royalty purchases
Financing Receivable, Nonaccrual [Line Items]
Total before allowance for credit losses	12,312	13,830
Performing
Financing Receivable, Nonaccrual [Line Items]
Total before allowance for credit losses	234,118	274,179
Allowance for credit losses	(6,979)	(9,174)
Total carrying value	227,139	265,005
Performing | Term loans
Financing Receivable, Nonaccrual [Line Items]
Total before allowance for credit losses	234,118	223,073
Performing | Royalty purchases
Financing Receivable, Nonaccrual [Line Items]
Total before allowance for credit losses	$ 0	$ 51,106