SEGMENT REPORTING - Operating Activity Within Reportable Segments (Details) - USD ($) $ in Thousands	3 Months Ended
Mar. 31, 2020	Mar. 31, 2019
Segment Reporting Information [Line Items]
Operating Income (Loss)	$ 28,848	$ 28,821
Total segments’ profit	63,130	55,477
Retail
Segment Reporting Information [Line Items]
Revenue from Contract with Customer, Including Assessed Tax	25,826	29,437
Property Expenses	(7,331)	(7,154)
Operating Income (Loss)	18,495	22,283
Office
Segment Reporting Information [Line Items]
Revenue from Contract with Customer, Including Assessed Tax	44,509	27,806
Property Expenses	(11,793)	(8,489)
Operating Income (Loss)	32,716	19,317
Multifamily
Segment Reporting Information [Line Items]
Revenue from Contract with Customer, Including Assessed Tax	12,825	12,899
Property Expenses	(5,510)	(5,073)
Operating Income (Loss)	7,315	7,826
Mixed-use
Segment Reporting Information [Line Items]
Revenue from Contract with Customer, Including Assessed Tax	13,583	15,177
Property Expenses	(8,979)	(9,126)
Operating Income (Loss)	$ 4,604	$ 6,051

Property expenses.

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- Definition

Aggregate revenue less cost of goods and services sold or operating expenses directly attributable to the revenue generation activity.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 220
-SubTopic 10
-Section S99
-Paragraph 2
-Subparagraph (SX 210.5-03.1,2)
-URI http://asc.fasb.org/extlink&oid=116634182&loc=SL114868664-224227

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- Definition

The net result for the period of deducting operating expenses from operating revenues.

+ References

No definition available.

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- Definition

Amount, including tax collected from customer, of revenue from satisfaction of performance obligation by transferring promised good or service to customer. Tax collected from customer is tax assessed by governmental authority that is both imposed on and concurrent with specific revenue-producing transaction, including, but not limited to, sales, use, value-added and excise.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 606
-SubTopic 10
-Section 50
-Paragraph 5
-URI http://asc.fasb.org/extlink&oid=118956577&loc=SL49130545-203045

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 606
-SubTopic 10
-Section 50
-Paragraph 4
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=118956577&loc=SL49130543-203045

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Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

No definition available.

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