Finance Receivables, Net (Details 2) - USD ($) $ in Thousands	Jun. 30, 2022	Dec. 31, 2021
Financing Receivable, Credit Quality Indicator [Line Items]
Total carrying value	$ 174,859	$ 181,553
Life Science Term Loans [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Total carrying value	133,004	136,312
Life Science Royalty Purchases [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Total carrying value	41,855	45,241
Nonperforming Financial Instruments [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Total carrying value	12,916	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	3,127	3,362
Performing Financial Instruments [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Total carrying value	161,943	159,903
Performing Financial Instruments [Member] | Life Science Term Loans [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Total carrying value	123,215	118,024
Performing Financial Instruments [Member] | Life Science Royalty Purchases [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Total carrying value	$ 38,728	$ 41,879