FAIR VALUE (Fair Value Measurements By Level 3 Valuation Technique) (Details)	Jun. 30, 2020 USD ($)	Dec. 31, 2019 USD ($)
Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques [Line Items]
Investments in debt securities	$ 29,988,000	$ 31,365,000
Gain Share Arrangement [Member]
Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques [Line Items]
Fair Value, liability	$ (36,000)
Gain Share Arrangement [Member] \| Measurement Input, Discount Rate [Member]
Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques [Line Items]
Derivative Liability, Measurement Input	7.6
Available-for-sale, Multifamily Tax-exempt, Subordinated Cash Flow Bonds [Member]
Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques [Line Items]
Fair Value, asset	$ 6,114,000	$ 6,026,000
Available-for-sale, Multifamily Tax-exempt, Subordinated Cash Flow Bonds [Member] \| Measurement Input, Discount Rate [Member]
Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques [Line Items]
Debt Securities, Available-for-sale, Measurement Input	7.2	7.3
Available for sale bid price		$ 16,611
Available-for-sale, Multifamily Tax-exempt, Subordinated Cash Flow Bonds [Member] \| Measurement Input, Cap Rate [Member]
Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques [Line Items]
Debt Securities, Available-for-sale, Measurement Input	6.3	6.2
Available-for-sale, Multifamily Tax-exempt, Subordinated Cash Flow Bonds [Member] \| Measurement Input, NOI Annual Growth Rate [Member]
Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques [Line Items]
Debt Securities, Available-for-sale, Measurement Input		0.7
Available-for-sale, Infrastructure Bonds [Member]
Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques [Line Items]
Fair Value, asset	$ 23,874,000	$ 25,339,000
Available-for-sale, Infrastructure Bonds [Member] \| Measurement Input, Discount Rate [Member]
Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques [Line Items]
Debt Securities, Available-for-sale, Measurement Input	7.6	7.0
Loans Held for Investment
Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques [Line Items]
Fair Value, asset	$ 1,291,000	$ 500,000
Loans Held for Investment \| Measurement Input, Discount Rate [Member]
Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques [Line Items]
Loans receivable, measurement input	7.6	8.0
Weighted Average [Member] \| Loans Held for Investment \| Measurement Input, Discount Rate [Member]
Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques [Line Items]
Loans receivable, measurement input		8.0

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Value of input used to measure fair value of loans receivable.

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Amount of investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale).

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
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Value of input used to measure investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale).

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-Publisher FASB
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Value of input used to measure derivative liability.

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Fair value of financial instrument classified as an asset measured using unobservable inputs that reflect the entity's own assumption about the assumptions market participants would use in pricing.

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Fair value of financial instrument classified as derivative asset (liability) after deduction of derivative liability (asset), measured using unobservable inputs that reflect the entity's own assumption about the assumptions market participants would use in pricing.

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