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Loans Receivable and Other Lending Investments, Net (Impaired Loans) (Details)	3 Months Ended		6 Months Ended
	Jun. 30, 2022 USD ($) loan	Jun. 30, 2021 USD ($)	Jun. 30, 2022 USD ($) loan	Jun. 30, 2021 USD ($)	Feb. 28, 2022 loan	Dec. 31, 2021 USD ($) loan
Financing Receivable, Impaired [Line Items]
(Recovery of) provision for loan losses	$ 22,578,000	$ (2,158,000)	$ 22,713,000	$ (5,800,000)
Impaired Loans
Number of non accrual loans | loan	1		1		1	1
Interest income on Impaired loans	$ 0	$ 0	$ 0	$ 0
Commercial Portfolio Segment
Impaired Loans
Amortized Cost	60,256,000		60,256,000			$ 59,640,000
Unpaid Principal Balance	59,505,000		59,505,000			58,888,000
Related Allowance	(708,000)		(708,000)			(576,000)
Commercial Portfolio Segment | Senior mortgages
Impaired Loans
Amortized Cost	60,256,000		60,256,000			59,640,000
Unpaid Principal Balance	59,505,000		59,505,000			58,888,000
Related Allowance	$ (708,000)		$ (708,000)			$ (576,000)

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Impaired Financing Receivable [Abstract]

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Number Of Non Accrual Loans

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Amount of allowance for credit losses related to recorded investment.

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-Publisher FASB
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Amount of interest income on financing receivables, for which there is a related allowance for credit losses, recognized on a cash-basis method of accounting that the financing receivables were impaired.

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Amount of investment in impaired financing receivables for which there is a related allowance for credit losses.

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Unpaid principal balance of impaired financing receivables for which there is a related allowance for credit losses.

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Amount of credit loss expense (reversal of expense) for financing receivable.

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