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Loans Receivable and Other Lending Investments, net (Credit Characteristics by Payment Status) (Details) - Commercial Portfolio Segment - USD ($) $ in Thousands	Jun. 30, 2021	Dec. 31, 2020
Recorded investment in loans, aged by payment status and presented by class
Current	$ 235,448	$ 497,515
Total Past Due	56,610	85,447
Total	292,058	582,962
Less Than and Equal to 90 Days
Recorded investment in loans, aged by payment status and presented by class
Total Past Due	56,610	85,447
Greater Than 90 Days
Recorded investment in loans, aged by payment status and presented by class
Total Past Due	0	0
Senior mortgages
Recorded investment in loans, aged by payment status and presented by class
Current	184,683	443,154
Total Past Due	56,610	42,501
Total	241,293	485,655
Senior mortgages | Less Than and Equal to 90 Days
Recorded investment in loans, aged by payment status and presented by class
Total Past Due	56,610	42,501
Senior mortgages | Greater Than 90 Days
Recorded investment in loans, aged by payment status and presented by class
Total Past Due	0	0
Corporate/Partnership loans
Recorded investment in loans, aged by payment status and presented by class
Current	38,723	42,721
Total Past Due	0	42,946
Total	38,723	85,667
Corporate/Partnership loans | Less Than and Equal to 90 Days
Recorded investment in loans, aged by payment status and presented by class
Total Past Due	0	42,946
Corporate/Partnership loans | Greater Than 90 Days
Recorded investment in loans, aged by payment status and presented by class
Total Past Due	0	0
Subordinate mortgages
Recorded investment in loans, aged by payment status and presented by class
Current	12,042	11,640
Total Past Due	0	0
Total	12,042	11,640
Subordinate mortgages | Less Than and Equal to 90 Days
Recorded investment in loans, aged by payment status and presented by class
Total Past Due	0	0
Subordinate mortgages | Greater Than 90 Days
Recorded investment in loans, aged by payment status and presented by class
Total Past Due	$ 0	$ 0

X

- Definition

Amount of financing receivable not past due.

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