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Loans Receivable and Other Lending Investments, net - Investment in Loans and Associated Allowance for Loan Losses (Details) - USD ($) $ in Thousands	Mar. 31, 2020	Dec. 31, 2019
Loans
Total	$ 729,646	$ 703,280
Other Lending Investments
Total	154,453	153,216
Less: Allowance for loan losses
Individually Evaluated for Impairment	(21,701)	(21,701)
Collectively Evaluated for Impairment	(11,563)	(6,933)
Total	(33,264)	(28,634)
Individually Evaluated for Impairment	15,816	16,119
Collectively Evaluated for Impairment	835,019	811,742
Total loans receivable and other lending investments, net	850,835	827,861
Unamortized discounts, premiums, deferred fees and costs, net discount	100	100
Held-to-maturity debt securities
Other Lending Investments
Individually Evaluated for Impairment	0	0
Collectively Evaluated for Impairment	86,368	84,981
Total	86,368	84,981
Available-for-sale debt securities
Other Lending Investments
Individually Evaluated for Impairment	0	0
Collectively Evaluated for Impairment	23,640	23,896
Total	23,640	23,896
Construction loans
Loans
Individually Evaluated for Impairment	0	0
Collectively Evaluated for Impairment	641,943	614,386
Total	641,943	614,386
Less: Allowance for loan losses
Total	(9,724)	(6,668)
Loans
Loans
Individually Evaluated for Impairment	37,517	37,820
Collectively Evaluated for Impairment	50,186	51,073
Total	87,703	88,893
Less: Allowance for loan losses
Total	(686)	(265)
Unamortized discounts, premiums, deferred fees and costs, net discount	200	700
Financing receivables
Loans
Individually Evaluated for Impairment	0	0
Collectively Evaluated for Impairment	44,445	44,339
Total	44,445	44,339
Less: Allowance for loan losses
Total	$ (1,100)	$ 0

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