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Partners' Capital - Partnership Units (Table) (Details)
Jun. 30, 2013
Dec. 31, 2012
Partners' Capital (Abstract)    
Limited partner units 69,372,077 69,372,077
General partner units 1,415,757 1,415,757
Preferred partner units 24,655,554 15,555,554
Total partnership units 95,443,388 86,343,388