REAL ESTATE (Concentration of Credit Risk, Tenant Lease that Represents More than 10% of Annualized Base Rent) (Details) $ in Thousands	12 Months Ended
Dec. 31, 2019 USD ($) ft² $ / ft²
Concentration Risk [Line Items]
Rentable Square Feet \| ft²	7,800,000
Total real estate held for investment, net	$ 2,053,357
Occupancy	86.00%
Accenture Tower \| Assets, Total
Concentration Risk [Line Items]
Rentable Square Feet \| ft²	1,457,724
Total real estate held for investment, net	$ 363,538
Percentage of Total Assets	13.80%
Annualized Base Rent	$ 31,445
Average Annualized Base Rent per sq. ft. \| $ / ft²	27.97
Occupancy	77.30%

For an entity that discloses a concentration risk in relation to quantitative amount, which serves as the "benchmark" (or denominator) in the equation, this concept represents the concentration percentage derived from the division.

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
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Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
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Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef
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Reference 4: http://fasb.org/us-gaap/role/ref/legacyRef
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-Name Accounting Standards Codification
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