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Loans Receivable and Other Lending Investments, net (Investment in Loans and Associated Allowance for Loan Losses) (Details) - USD ($) $ in Thousands	Dec. 31, 2020	Dec. 31, 2019
Other Lending Investments
Total	$ 162,538	$ 153,216
Less: Allowance for loan losses
Individually evaluated for impairment	(743)	(21,701)
Collectively evaluated for impairment	(12,427)	(6,933)
Total	(13,170)	(28,634)
Individually evaluated for impairment	52,562	16,119
Collectively evaluated for impairment	679,768	811,742
Total loans receivable and other lending investments, net	732,330	827,861
Individually Evaluated for Impairment
Less: Allowance for loan losses
Net discounts	800	100
Collectively Evaluated for Impairment
Less: Allowance for loan losses
Net discounts	2,300	700
Held-to-maturity debt securities
Other Lending Investments
Individually evaluated for impairment	0	0
Collectively evaluated for impairment	90,715	84,981
Total	90,715	84,981
Available-for-sale debt securities
Other Lending Investments
Individually evaluated for impairment	0	0
Collectively evaluated for impairment	25,274	23,896
Total	25,274	23,896
Construction loans
Loans
Individually evaluated for impairment	53,305	0
Collectively evaluated for impairment	461,528	614,386
Total	514,833	614,386
Less: Allowance for loan losses
Total	(6,541)	(6,668)
Loans
Loans
Individually evaluated for impairment	0	37,820
Collectively evaluated for impairment	68,129	51,073
Total	68,129	88,893
Less: Allowance for loan losses
Total	(1,643)	(265)
Financing receivables
Loans
Individually evaluated for impairment	0	0
Collectively evaluated for impairment	46,549	44,339
Total	46,549	44,339
Less: Allowance for loan losses
Total	$ (1,150)	$ 0

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