Finance Receivables, Net (Details 2) - USD ($) $ in Thousands	Sep. 30, 2022	Dec. 31, 2021
Financing Receivable, Credit Quality Indicator [Line Items]
Total carrying value	$ 212,959	$ 181,553
Life Science Term Loans [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Total carrying value	180,537	136,312
Life Science Royalty Purchases [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Total carrying value	32,422	45,241
Nonperforming Financial Instruments [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Total carrying value	12,826	21,650
Nonperforming Financial Instruments [Member] | Life Science Term Loans [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Total carrying value	9,789	18,288
Nonperforming Financial Instruments [Member] | Life Science Royalty Purchases [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Total carrying value	3,037	3,362
Performing Financial Instruments [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Total carrying value	200,133	159,903
Performing Financial Instruments [Member] | Life Science Term Loans [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Total carrying value	170,748	118,024
Performing Financial Instruments [Member] | Life Science Royalty Purchases [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Total carrying value	$ 29,385	$ 41,879