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

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

-Number 159

-Paragraph 18

-Subparagraph f

-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 323

-SubTopic 10

-Section 50

-Paragraph 3

-Subparagraph (a)(1)

-URI http://asc.fasb.org/extlink&oid=6382943&loc=d3e33918-111571

Reference 3: http://www.xbrl.org/2003/role/presentationRef

-Publisher AICPA

-Name Accounting Principles Board Opinion (APB)

-Number 18

-Paragraph 20

-Subparagraph a (1)

-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

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

INVESTMENT IN UNCONSOLIDATED JOINT VENTURE INVESTMENT IN UNCONSOLIDATED JOINT VENTURE (Details) (USD $) In Thousands, unless otherwise specified	6 Months Ended			0 Months Ended
	Jun. 30, 2012 sqft	Jun. 30, 2011	Dec. 31, 2011	May 18, 2012 OCM NIP JV Holdings, L.P. and HC KBS NIP JV, LLC (“HC-KBS”) [Member] sqft	May 18, 2012 OCM NIP JV Holdings, L.P. and HC KBS NIP JV, LLC (“HC-KBS”) [Member] Industrial [Member] properties
Schedule of Equity Method Investments [Line Items]
Number of real estate properties					23
Rentable square feet	1,400,000			11,400,000
Initial capital contribution	$ 8,000	$ 0		$ 8,000
Ownership interest				2.70%
Investment in unconsolidated joint venture	$ 8,000		$ 0