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Certain Relationships And Related Party Transactions (Narrative) (Details) (USD $)
In Millions, unless otherwise specified
3 Months Ended 9 Months Ended
Sep. 30, 2014
Sep. 30, 2013
Sep. 30, 2014
Sep. 30, 2013
Certain Relationships And Related Party Transactions [Abstract]        
Managment agreement maturity date     2018  
Management fee, rate per year     $ 15.0  
Management fees and reimbursed expenses $ 3.7 $ 3.8 $ 11.3 $ 11.9