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Loans Receivable and Other Lending Investments, net (Investment in Loans and Associated Allowance for Loan Loss) (Details) - USD ($) $ in Thousands | Sep. 30, 2023 | Jun. 30, 2023 | Dec. 31, 2022 | Sep. 30, 2022 | Jun. 30, 2022 | Dec. 31, 2021
--- | --- | --- | --- | --- | --- | ---
Loans |  |  |  |  |  |  |
Total |  | $ 16,576 |  | $ 49,580 |  |  |
Available-for-sale debt securities |  |  |  |  |  |  |
Total |  | 4,081 |  | 0 |  |  |
Less: Allowance for loan losses |  |  |  |  |  |  |
Individually evaluated for impairment |  | 0 |  | (396) |  |  |
Collectively evaluated for impairment |  | (484) |  | (529) |  |  |
Total |  | (484) |  | (925) |  |  |
Individually Evaluated for Impairment |  | 0 |  | 29,097 |  |  |
Collectively Evaluated for Impairment |  | 20,173 |  | 19,558 |  |  |
Total loans receivable and other lending investments, net | [1] | 20,173 |  | 48,655 |  |  |
Available-for-sale debt securities |  |  |  |  |  |  |
Available-for-sale debt securities |  |  |  |  |  |  |
Collectively Evaluated for Impairment |  | 4,081 |  |  |  |  |
Total |  | 4,081 |  | 0 |  |  |
Available-for-sale debt securities | Individually Evaluated for Impairment |  |  |  |  |  |  |
Available-for-sale debt securities |  |  |  |  |  |  |
Individually Evaluated for Impairment |  | 0 |  |  |  |  |
Construction Loans |  |  |  |  |  |  |
Loans |  |  |  |  |  |  |
Individually Evaluated for Impairment |  |  |  | 29,493 |  |  |
Collectively Evaluated for Impairment |  |  |  | 6,756 |  |  |
Total |  | 0 |  | 36,249 |  |  |
Less: Allowance for loan losses |  |  |  |  |  |  |
Total |  |  |  | (92) | $ (848) | $ (861) | $ (1,213)
Net premiums (discounts) |  |  |  | 100 |  |  |
Loans |  |  |  |  |  |  |
Loans |  |  |  |  |  |  |
Individually Evaluated for Impairment |  | 0 |  | 0 |  |  |
Collectively Evaluated for Impairment |  | 16,576 |  | 13,331 |  |  |
Total |  | 16,576 |  | 13,331 |  |  |
Less: Allowance for loan losses |  |  |  |  |  |  |
Total |  | $ (484) | $ (389) | $ (437) | $ (378) | $ (450) | $ (676)
[1] | Refer to Note 2 for details on the Company’s combined and consolidated variable interest entities (“VIEs”).

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