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REAL ESTATE REAL ESTATE (Geographic Concentration Risk) (Narrative) (Details) - Assets, Total [Member]
6 Months Ended
Jun. 30, 2015
California [Member]  
Concentration Risk [Line Items]  
Concentration risk, percentage 19.00%
Illinois [Member]  
Concentration Risk [Line Items]  
Concentration risk, percentage 15.00%
Texas [Member]  
Concentration Risk [Line Items]  
Concentration risk, percentage 13.00%