INVESTMENTS IN UNCONSOLIDATED ENTITIES AND LOAN MANAGER (Narrative) (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended	0 Months Ended
	Mar. 31, 2015	Apr. 17, 2012	Dec. 31, 2013
Schedule of Equity Method Investments [Line Items]
Preferred equity interest retained as a percentage of incentive management fees	75.00%
RRE Opportunity REIT I [Member]
Schedule of Equity Method Investments [Line Items]
Cost method investment	$ 2.5
RRE Opportunity REIT II [Member]
Schedule of Equity Method Investments [Line Items]
Cost method investment	1.3
CVC Credit Partners [Member]
Schedule of Equity Method Investments [Line Items]
Cost method investment	6.8
Percentage interest in limited partnership formed	33.00%
Percentage Interest In Limited Partnership, After Option	24.00%
Innovation Office REIT [Member]
Schedule of Equity Method Investments [Line Items]
Cost method investment			0.2
Resource Credit Income Fund [Member]
Schedule of Equity Method Investments [Line Items]
Cost method investment			$ 0.2
CVC Credit Partners, L.P. [Member]
Schedule of Equity Method Investments [Line Items]
Irrevocable Option to Buy Interests in Joint Venture, Percentage	9.00%
Irrevocable Option to Buy Interests in Joint Venture, Exercise Period		30 days