REAL ESTATE EQUITY SECURITIES (Portion of Gain and Loss) (Details) - USD ($) $ in Thousands	12 Months Ended
Dec. 31, 2019	Dec. 31, 2018
Investments, Debt and Equity Securities [Abstract]
Net gain (loss) recognized during the period on real estate equity securities	$ 20,379	$ (19,010)
Less: Net gain (loss) recognized during the period on real estate equity securities sold during the period	4,158	(837)
Unrealized gain (loss) recognized during the reporting period on real estate equity securities still held at period end	$ 16,221	$ (18,173)

Available-for-sale Equity Securities, Change in Net Unrealized Holding Gain (Loss)

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- Definition

Amount of unrealized and realized gain (loss) on investment in equity security measured at fair value with change in fair value recognized in net income (FV-NI).

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 321
-SubTopic 10
-Section 50
-Paragraph 4
-URI http://asc.fasb.org/extlink&oid=116654751&loc=SL75117546-209714

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- Definition

Amount of realized gain (loss) from sale of investment in equity security measured at fair value with change in fair value recognized in net income (FV-NI).

+ References

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- References

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