Finance Receivables, Net (Details) - USD ($) $ in Thousands	Jun. 30, 2022	Dec. 31, 2021
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total before allowance for credit losses	$ 183,224	$ 189,941
Allowance for credit losses	(8,365)	(8,388)
Total carrying value	174,859	181,553
Life Science Term Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total before allowance for credit losses	133,004	136,312
Total carrying value	133,004	136,312
Life Science Royalty Purchases [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total before allowance for credit losses	50,220	53,629
Total carrying value	$ 41,855	$ 45,241