PRINCIPLES OF CONSOLIDATION (Details)	Sep. 30, 2019	Dec. 31, 2018
University Business Center 120 and 130 [Member]
Subsidiaries [Line Items]
Joint Ventures Assets Liabilities Revenues And Expenses With Noncontrolling Interests	100.00%	100.00%
Less Than Wholly Owned Joint Venture Investment Ownership Percentage	80.00%	80.00%
Industry Distribution Center II - undivided tenant-in-common interest [Member]
Subsidiaries [Line Items]
Tenant-in-common interest	50.00%	50.00%

The percentage of ownership of common stock or equity participation in the investee accounted for under the equity method of accounting.

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 323
-SubTopic 10
-Section 50
-Paragraph 3
-Subparagraph (a)(1)
-URI http://asc.fasb.org/extlink&oid=114001798&loc=d3e33918-111571

Name:	us-gaap_EquityMethodInvestmentOwnershipPercentage
Namespace Prefix:	us-gaap_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	instant