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Acquisitions El Dorado and Tyler Acquisitions (Details) - USD ($)
$ in Thousands
 12 Months Ended
Mar. 31, 2015
Feb. 10, 2014
Jul. 26, 2013
Dec. 31, 2015
Dec. 31, 2014
Dec. 31, 2013
El Dorado Assets [Member]            
Business Acquisition [Line Items]            
Cash paid for acquisition $ 42,500          
Historical carrying value of assets 7,600          
Total operating revenues       $ 4,449    
Net income attributable to the Partnership       3,277    
Tyler Assets [Member]            
Business Acquisition [Line Items]            
Cash paid for acquisition 19,400          
Historical carrying value of assets $ 11,600          
Total operating revenues       1,620    
Net income attributable to the Partnership       1,035    
El Dorado Terminal and Tank Assets [Member]            
Business Acquisition [Line Items]            
Cash paid for acquisition   $ 95,900       $ 94,800
Tyler Terminal and Tank Assets [Member]            
Business Acquisition [Line Items]            
Cash paid for acquisition     $ 94,800 61,900 $ 95,900  
General and Administrative Expense [Member] | El Dorado Assets [Member]            
Business Acquisition [Line Items]            
Costs associated with the acquisition       235    
General and Administrative Expense [Member] | Tyler Assets [Member]            
Business Acquisition [Line Items]            
Costs associated with the acquisition       $ 240