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Loans Receivable and Other Lending Investments, net (Schedule of Loans Receivable) (Details) - USD ($) $ in Thousands | Dec. 31, 2022 | Dec. 31, 2021 | Dec. 31, 2020 | Dec. 31, 2019
--- | --- | --- | --- | ---
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |  |
Other lending investments |  |  | $ 124,930 |  |
Total gross carrying value of loans receivable and other lending investments |  | $ 49,580 | 337,613 |  |
Allowance for loan losses |  | (925) | (4,769) |  |
Total loans receivable and other lending investments, net | [1] | 48,655 | 332,844 |  |
Held-to-maturity debt securities |  |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |  |
Other lending investments |  |  | 96,838 |  |
Available-for-sale debt securities |  |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |  |
Other lending investments |  |  | 28,092 |  |
Commercial Portfolio Segment |  |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |  |
Subtotal - gross carrying value of loans |  | 49,580 | 212,683 |  |
Commercial Portfolio Segment | Senior mortgages |  |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |  |
Subtotal - gross carrying value of loans |  | 36,249 | 199,608 |  |
Commercial Portfolio Segment | Corporate/Partnership loans |  |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |  |
Subtotal - gross carrying value of loans |  |  | 618 |  |
Commercial Portfolio Segment | Subordinate mortgages |  |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |  |
Subtotal - gross carrying value of loans |  | 13,331 | 12,457 |  |
Construction Loans |  |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |  |
Subtotal - gross carrying value of loans |  | 36,249 | 185,261 |  |
Allowance for loan losses |  | (92) | (1,213) | $ (6,541) | $ (6,668)
Construction Loans | Commercial Portfolio Segment |  |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |  |
Subtotal - gross carrying value of loans |  | 36,249 | 185,261 |  |
Construction Loans | Commercial Portfolio Segment | Senior mortgages |  |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |  |
Subtotal - gross carrying value of loans |  | $ 36,249 | 184,643 |  |
Construction Loans | Commercial Portfolio Segment | Corporate/Partnership loans |  |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |  |
Subtotal - gross carrying value of loans |  |  | 618 |  |
Completed construction | Commercial Portfolio Segment |  |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |  |
Percentage of construction loans |  | 100.00% |  |  |
Loans |  |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |  |
Subtotal - gross carrying value of loans |  | $ 13,331 | 27,422 |  |
Allowance for loan losses |  | (437) | (676) | $ (1,643) | $ (265)
Loans | Commercial Portfolio Segment | Senior mortgages |  |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |  |
Subtotal - gross carrying value of loans |  |  | 14,965 |  |
Loans | Commercial Portfolio Segment | Subordinate mortgages |  |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |  |
Subtotal - gross carrying value of loans |  | $ 13,331 | $ 12,457 |  |
[1] | Refer to Note 2 for details on the Company’s consolidated variable interest entities (“VIEs”). Certain items have been reclassified to “Real estate and other assets available and held for sale and classified as discontinued operations” and “Liabilities associated with real estate held for sale and classified as discontinued operations” (refer to Note 3).

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