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ACCOUNTING POLICIES (Details 2) (USD $)
9 Months Ended
Sep. 30, 2014
Dec. 31, 2013
Revenue Recognition [Abstract]    
Straight-line rent receivables $ 179,069,000 $ 150,829,000
Allowance for Straight-Line Rent Receivable $ (138,300,000) $ (101,400,000)
Term of resident lease agreements, minimum 12 months  
Term of resident lease agreements, maximum 18 months  
Notice period to cancel lease agreements by the resident 30 days