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Partners' Capital and Distributions - Incentive Distributions (Details) - General Partner - USD ($)
$ / shares in Units, $ in Thousands
12 Months Ended
Dec. 31, 2015
Dec. 31, 2014
Dec. 31, 2013
Jan. 31, 2016
Incentive distributions        
Reduction in incentive distributions $ 22,000 $ 23,000 $ 15,000  
Reduction in incentive distributions per quarter in 2016 5,000      
Reduction in incentive distributions per quarter after 2016 $ 3,750      
Series A Convertible Preferred Units | Subsequent Event        
Incentive distributions        
Threshold annualized distribution level over which IDRs participate on converted units       $ 2.80