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INVESTMENT IN UNCONSOLIDATED JOINT VENTURE INVESTMENT IN UNCONSOLIDATED JOINT VENTURE (Details) (USD $)
3 Months Ended 0 Months Ended
Mar. 31, 2013
sqft
Dec. 31, 2012
May 18, 2012
OCM NIP JV Holdings, L.P. and HC KBS NIP JV, LLC (“HC-KBS”) [Member]
sqft
May 18, 2012
Industrial [Member]
OCM NIP JV Holdings, L.P. and HC KBS NIP JV, LLC (“HC-KBS”) [Member]
properties
Schedule of Equity Method Investments [Line Items]        
Number of real estate properties       23
Rentable square feet 3,200,000.0   11,400,000.0  
Initial capital contribution     $ 8,000,000  
Ownership interest     4.70%  
Investment in unconsolidated joint venture 7,882,000 7,926,000    
Distributions from Joint Ventures $ 0