CERTAIN RELATIONSHIPS AND RELATED PARTY TRANSACTIONS (Narrative) (Details) (USD $)				3 Months Ended				3 Months Ended	0 Months Ended
	Mar. 31, 2014	Dec. 31, 2013	Mar. 31, 2014 RRE Opportunity REIT II [Member]	Mar. 31, 2014 Affiliated Real Estate Limited Partnership [Member]	Mar. 31, 2013 Affiliated Real Estate Limited Partnership [Member]	Dec. 31, 2013 Affiliated Real Estate Limited Partnership [Member]	Dec. 31, 2010 Affiliated Real Estate Limited Partnership [Member]	Mar. 31, 2014 Employees [Member]	Feb. 06, 2014 IPO [Member] RRE Opportunity REIT II [Member]
Related Party Transaction [Line Items]
Initial public offering, amount of offering									$ 1,000,000,000.0
Initial public offering, maximum price per share (in dollars per share)									$ 10.00
Due from related parties	34,506,000	30,923,000	2,200,000
Maximum revolving note, related party				3,000,000			2,000,000
Interest rate description					bearing interest at the prime rate
Notes receivable, related party				2,300,000		2,300,000
Other revenues from transactions with related party				18,000	18,000
Due from employee								$ 300,000
Description of variable rate basis								3-month LIBOR
Stated interest rate								3.00%