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Loans Receivable and Other Lending Investments, net (Allowance for Loan Losses) (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2022	Mar. 31, 2021	Dec. 31, 2021
Financing Receivables
Allowance for loan losses at beginning of period	$ 4,769
Provision for (recovery of) loan losses	135	$ (3,642)
Allowance for loan losses at end of period	4,932
Held to Maturity Debt Securities
Allowance for loan losses at beginning of period	2,304	3,093
(Recovery of) Provision for loan losses	111	(408)
Allowance for loan losses at end of period	2,415	2,685
Total
Allowance for loan losses at beginning of period	4,769	12,020
(Recovery of) Provision for loan losses	163	(3,960)
Allowance for loan losses at end of period	4,932	8,060
Increase to reserves for loan losses	100		$ 100
Provision for (recovery of) loan losses	100	(3,600)
Accounts Payable, Accrued Expenses and Other Liabilities
Total
Provision for ( recovery of) unfunded commitments		(300)
Construction Loans
Financing Receivables
Allowance for loan losses at beginning of period	1,213	6,541
Provision for (recovery of) loan losses	39	(3,648)
Allowance for loan losses at end of period	1,252	2,893
Loans
Financing Receivables
Allowance for loan losses at beginning of period	676	1,643
Provision for (recovery of) loan losses	(2)	172
Allowance for loan losses at end of period	674	1,815
Specific receivables
Financing Receivables
Allowance for loan losses at beginning of period	576	743
Provision for (recovery of) loan losses	15	(76)
Allowance for loan losses at end of period	$ 591	$ 667

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