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Net Income Per Unit Narrative (Details) - shares
3 Months Ended 6 Months Ended
Jun. 30, 2017
Jun. 30, 2016
Jun. 30, 2017
Jun. 30, 2016
Feb. 25, 2016
Limited Partners' Capital Account [Line Items]          
General partner's ownership interest 2.00% 2.00% 2.00% 2.00%  
Subordinated unitholders - Delek          
Limited Partners' Capital Account [Line Items]          
Common units outstanding (units)         11,999,258