ACQUISITIONS AND DISPOSITIONS - Acquisitions (Details) $ in Thousands	Jan. 18, 2018 USD ($) ft²	Dec. 31, 2017 USD ($)
9460 Wilshire Boulevard in Los Angeles, California
Business Acquisition [Line Items]
Percent of ownership acquired	100.00%
Square Feet \| ft²	91,750
Purchase Price \| $	$ 132,000
Non-refundable escrow deposit \| $		$ 20,000
Asset acquisitions transaction costs \| $	$ 48
9460 Wilshire Boulevard in Los Angeles, California - Office Space
Business Acquisition [Line Items]
Square Feet \| ft²	68,866
9460 Wilshire Boulevard in Los Angeles, California - Retail Space
Business Acquisition [Line Items]
Square Feet \| ft²	22,884

Asset Acquisitions, Acquisition Related Transaction Costs

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- Definition

Percentage Of Ownership Acquired

+ References

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- Definition

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.

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- Definition

The designation of funds furnished by a borrower to a lender to assure future payments of the borrower's real estate taxes and insurance obligations with respect to a mortgaged property. Escrow deposits may be made for a variety of other purposes such as earnest money and contingent payments. This element excludes replacement reserves which are an escrow separately provided for within the US GAAP taxonomy.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 942
-SubTopic 210
-Section S99
-Paragraph 1
-Subparagraph (SX 210.9-03.10)
-URI http://asc.fasb.org/extlink&oid=6876686&loc=d3e534808-122878

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- Definition

Net rentable area for properties owned.

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- Definition

The cash outflow for purchases of and capital improvements on property, plant and equipment (capital expenditures), software, and other intangible assets.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 13
-Subparagraph (c)
-URI http://asc.fasb.org/extlink&oid=98514028&loc=d3e3213-108585

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