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Loans Receivable and Other Lending Investments, net (Schedule of Loans Receivable) (Details) - USD ($) $ in Thousands		Mar. 31, 2022	Dec. 31, 2021	Mar. 31, 2021	Dec. 31, 2020
Accounts, Notes, Loans and Financing Receivable [Line Items]
Other lending investments		$ 123,283	$ 124,930
Total gross carrying value of loans receivable and other lending investments		336,771	337,613
Allowance for loan losses		(4,932)	(4,769)
Total loans receivable and other lending investments, net	[1]	331,839	332,844
Held-to-maturity debt securities
Accounts, Notes, Loans and Financing Receivable [Line Items]
Other lending investments		98,419	96,838
Available-for-sale debt securities
Accounts, Notes, Loans and Financing Receivable [Line Items]
Other lending investments		24,864	28,092
Commercial Portfolio Segment
Accounts, Notes, Loans and Financing Receivable [Line Items]
Subtotal - gross carrying value of loans		213,488	212,683
Commercial Portfolio Segment | Senior mortgages
Accounts, Notes, Loans and Financing Receivable [Line Items]
Subtotal - gross carrying value of loans		200,818	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		12,670	12,457
Construction Loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Subtotal - gross carrying value of loans		186,094	185,261
Allowance for loan losses		(1,252)	(1,213)	$ (2,893)	$ (6,541)
Construction Loans | Commercial Portfolio Segment
Accounts, Notes, Loans and Financing Receivable [Line Items]
Subtotal - gross carrying value of loans		186,094	185,261
Construction Loans | Commercial Portfolio Segment | Senior mortgages
Accounts, Notes, Loans and Financing Receivable [Line Items]
Subtotal - gross carrying value of loans		186,094	184,643
Construction Loans | Commercial Portfolio Segment | Corporate/Partnership loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Subtotal - gross carrying value of loans		$ 0	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		$ 27,394	27,422
Allowance for loan losses		(674)	(676)	$ (1,815)	$ (1,643)
Loans | Commercial Portfolio Segment | Senior mortgages
Accounts, Notes, Loans and Financing Receivable [Line Items]
Subtotal - gross carrying value of loans		14,724	14,965
Loans | Commercial Portfolio Segment | Subordinate mortgages
Accounts, Notes, Loans and Financing Receivable [Line Items]
Subtotal - gross carrying value of loans		$ 12,670	$ 12,457
[1] Refer to Note 2 for details on the Company’s consolidated variable interest entities (“VIEs”).

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Amount of allowance for credit loss on financing receivable. Excludes allowance for financing receivable covered under loss sharing agreement.

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