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Loans Receivable and Other Lending Investments, net (Credit Characteristics by Payment Status) (Details) - USD ($) $ in Thousands | Sep. 30, 2023 | Dec. 31, 2022
--- | --- | ---
Recorded investment in loans, aged by payment status and presented by class |  |
Total | $ 16,576 | $ 49,580
Past Due |  |
Recorded investment in loans, aged by payment status and presented by class |  |
Total | 0 | 29,493
Greater Than 90 Days |  |
Recorded investment in loans, aged by payment status and presented by class |  |
Total | 0 | 0
Less Than and Equal to 90 Days |  |
Recorded investment in loans, aged by payment status and presented by class |  |
Total | 0 | 29,493
Current |  |
Recorded investment in loans, aged by payment status and presented by class |  |
Total | 16,576 | 20,087
Senior mortgages |  |
Recorded investment in loans, aged by payment status and presented by class |  |
Total | 2,550 | 36,249
Senior mortgages | Past Due |  |
Recorded investment in loans, aged by payment status and presented by class |  |
Total | 0 | 29,493
Senior mortgages | Greater Than 90 Days |  |
Recorded investment in loans, aged by payment status and presented by class |  |
Total | 0 | 0
Senior mortgages | Less Than and Equal to 90 Days |  |
Recorded investment in loans, aged by payment status and presented by class |  |
Total | 0 | 29,493
Senior mortgages | Current |  |
Recorded investment in loans, aged by payment status and presented by class |  |
Total | 2,550 | 6,756
Subordinate mortgages |  |
Recorded investment in loans, aged by payment status and presented by class |  |
Total | 14,026 | 13,331
Subordinate mortgages | Past Due |  |
Recorded investment in loans, aged by payment status and presented by class |  |
Total | 0 | 0
Subordinate mortgages | Greater Than 90 Days |  |
Recorded investment in loans, aged by payment status and presented by class |  |
Total | 0 | 0
Subordinate mortgages | Less Than and Equal to 90 Days |  |
Recorded investment in loans, aged by payment status and presented by class |  |
Total | 0 | 0
Subordinate mortgages | Current |  |
Recorded investment in loans, aged by payment status and presented by class |  |
Total | $ 14,026 | $ 13,331

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