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Loans Receivable and Other Lending Investments, net (Allowance for Loan Losses) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019	Jan. 01, 2020
Financing Receivables
Allowance for loan losses at beginning of period	$ 12,020
(Recovery of) provision for loan losses	(8,085)	$ 8,866	$ 6,482
Allowance for loan losses at end of period	4,769	12,020
Held to Maturity Debt Securities
Allowance for loan losses at beginning of period	3,093
(Recovery of) Provision for loan losses	(789)	3,073
Allowance for loan losses at end of period	2,304	3,093
Total
Allowance for loan losses at beginning of period	12,020	28,634
(Recovery of) Provision for loan losses	(7,251)	(9,510)
Charge offs		(25,889)
Allowance for loan losses at end of period	4,769	12,020	28,634
Increase to reserves for loan losses	100	1,000
Provision for (recovery of) loan losses	(8,100)
Provision for ( recovery of) unfunded commitments	1,000
Accrued Interest And Operating Lease Income Receivable, Net
Financing Receivables
(Recovery of) provision for loan losses		900
Accounts Payable, Accrued Expenses and Other Liabilities
Total
Provision for (recovery of) loan losses		8,900
Provision for ( recovery of) unfunded commitments		1,500
Period of Adoption, Adjustment
Held to Maturity Debt Securities
Allowance for loan losses at beginning of period		20
Allowance for loan losses at end of period			20
Total
Allowance for loan losses at beginning of period		(235)
Allowance for loan losses at end of period			(235)
Period of Adoption, Adjustment | ASU 2016-13
Total
Increase to reserves for loan losses				$ 2,300
Period of Adoption, Adjustment | ASU 2016-13 | Accounts Payable, Accrued Expenses and Other Liabilities
Total
Increase to reserves for loan losses				$ 2,500
Construction Loans
Financing Receivables
Allowance for loan losses at beginning of period	6,541	6,668
(Recovery of) provision for loan losses	(5,328)	226
Allowance for loan losses at end of period	1,213	6,541	6,668
Construction Loans | Period of Adoption, Adjustment
Financing Receivables
Allowance for loan losses at beginning of period		(353)
Allowance for loan losses at end of period			(353)
Loans
Financing Receivables
Allowance for loan losses at beginning of period	1,643	265
(Recovery of) provision for loan losses	(967)	1,280
Allowance for loan losses at end of period	676	1,643	265
Loans | Period of Adoption, Adjustment
Financing Receivables
Allowance for loan losses at beginning of period		98
Allowance for loan losses at end of period			98
Specific receivables
Financing Receivables
Allowance for loan losses at beginning of period	743	21,701
(Recovery of) provision for loan losses	(167)	4,931
Charge offs		(25,889)
Allowance for loan losses at end of period	$ 576	743	$ 21,701
Total
Charge offs		$ 25,889

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