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Loans Receivable and Other Lending Investments, net (Investment in Loans and Associated Allowance for Loan Loss) (Details) - USD ($) $ in Thousands		Jun. 30, 2021	Mar. 31, 2021	Dec. 31, 2020	Jun. 30, 2020	Mar. 31, 2020	Dec. 31, 2019
Other Lending Investments
Total		$ 170,037		$ 162,538
Less: Allowance for loan losses
Individually evaluated for impairment		(590)		(743)
Collectively evaluated for impairment		(6,545)		(12,427)
Total		(7,135)		(13,170)
Individually Evaluated for Impairment		56,020		52,562
Collectively Evaluated for Impairment		398,940		679,768
Total loans receivable and other lending investments, net	[1]	454,960		732,330
Net discounts		800		800
Held-to-maturity debt securities
Other Lending Investments
Individually Evaluated for Impairment		0		0
Collectively Evaluated for Impairment		93,677		90,715
Total		93,677		90,715
Available-for-sale debt securities
Other Lending Investments
Individually Evaluated for Impairment		0		0
Collectively Evaluated for Impairment		28,074		25,274
Total		28,074		25,274
Construction Loans
Loans
Individually Evaluated for Impairment		56,610		53,305
Collectively Evaluated for Impairment		154,269		461,528
Total		210,879		514,833
Less: Allowance for loan losses
Total		(1,640)	$ (2,893)	(6,541)	$ (11,736)	$ (9,724)	$ (6,668)
Loans
Loans
Individually Evaluated for Impairment		0		0
Collectively Evaluated for Impairment		81,179		68,129
Total		81,179		68,129
Less: Allowance for loan losses
Total		(1,619)	(1,815)	(1,643)	(905)	(686)	$ (265)
Net discounts		1,700		2,300
Financing receivables (refer to Note 5)
Loans
Individually Evaluated for Impairment		0		0
Collectively Evaluated for Impairment		48,286		46,549
Total		48,286		46,549
Less: Allowance for loan losses
Total		$ (893)	$ (998)	$ (1,150)	$ (1,159)	$ (1,100)
[1] Refer to Note 2 for details on the Company’s consolidated variable interest entities (“VIEs”).

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