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Net Income Per Unit Calculation of Net Income Per Unit (Details) - USD ($)
$ / shares in Units, $ in Thousands
 3 Months Ended 12 Months Ended
Dec. 31, 2017
Sep. 30, 2017
Jun. 30, 2017
Mar. 31, 2017
Dec. 31, 2016
Sep. 30, 2016
Jun. 30, 2016
Mar. 31, 2016
Dec. 31, 2017
Dec. 31, 2016
Dec. 31, 2015
Net income per unit [Line Items]                      
Net income attributable to partners                 $ 69,409 $ 62,804 $ 66,848
(Distributions) earnings excess                 $ (18,445) $ (12,215) $ 7,518
Footnote [Abstract]                      
General partner's ownership interest                 2.00% 2.00% 2.00%
Maximum | First target distribution                      
Footnote [Abstract]                      
Distribution payment targets                 $ 0.43125    
General Partner                      
Net income per unit [Line Items]                      
Total earnings                 $ 18,429 $ 12,193 $ 5,163
Limited Partner, Common Units                      
Net income per unit [Line Items]                      
Total earnings                 50,980 46,669 31,160
Limited Partner, Subordinated Units                      
Net income per unit [Line Items]                      
Total earnings                 $ 0 $ 3,942 $ 30,525
Common Units                      
Weighted average limited partner units outstanding:                      
Common units - (basic) [1]                 24,348,063 22,490,264 12,237,154
Common units - (diluted) [1]                 24,376,972 22,558,717 12,356,914
Net income per limited partner unit:                      
Common units - (basic) $ 0.57 $ 0.50 $ 0.59 $ 0.43 $ 0.47 $ 0.41 $ 0.66 $ 0.54 $ 2.09 [1] $ 2.08 [1] $ 2.55 [1]
Common units - (diluted) $ 0.57 $ 0.50 $ 0.59 $ 0.43 0.47 0.41 0.66 0.54 $ 2.09 [1] $ 2.07 [1] $ 2.52 [1]
Footnote [Abstract]                      
Common units excluded from computation of earnings per share                 0 4,240 6,200
Subordinated- Delek                      
Weighted average limited partner units outstanding:                      
Subordinated units - Delek (basic and diluted) [1]                 0 1,803,167 11,999,258
Net income per limited partner unit:                      
Subordinated units - Delek (basic and diluted)         $ 0.00 $ 0.00 $ 0.00 $ 0.54 $ 0.00 [1] $ 2.19 [1] $ 2.54 [1]
Footnote [Abstract]                      
Limited Partners' capital account, units outstanding 0       0     11,999,258 0 0  
General Partner                      
Net income per unit [Line Items]                      
Net income attributable to partners                 $ 18,429 $ 12,193 $ 5,163
General partner's distribution [2]                 18,797 12,437 5,013
(Distributions) earnings excess                 (368) (244) 150
Limited Partner                      
Net income per unit [Line Items]                      
Limited partners' distribution                 69,057 62,582 54,317
Limited Partner | Common Units                      
Net income per unit [Line Items]                      
Limited partners' distribution                 69,057 58,158 27,439
(Distributions) earnings excess                 $ (18,077) $ (11,489) $ 3,721
Weighted average limited partner units outstanding:                      
Common units - (basic) [3]                 24,348,063 22,490,264 12,237,154
Common units - (diluted) [3]                 24,376,972 22,558,717 12,356,914
Net income per limited partner unit:                      
Common units - (basic) [3]                 $ 2.09 $ 2.08 $ 2.55
Common units - (diluted) [3],[4]                 $ 2.09 $ 2.07 $ 2.52
Limited Partner | Subordinated Units                      
Net income per unit [Line Items]                      
Limited partners' distribution                 $ 0 $ 4,424 $ 26,878
(Distributions) earnings excess                 $ 0 $ (482) $ 3,647
Weighted average limited partner units outstanding:                      
Subordinated units - Delek (basic and diluted) [3],[5]                 0 1,803,167 11,999,258
Net income per limited partner unit:                      
Subordinated units - Delek (basic and diluted) [3]                 $ 0.00 $ 2.19 $ 2.54
Limited Partner | Subordinated- Delek                      
Net income per unit [Line Items]                      
Net income attributable to partners                   $ 3,942 $ 30,525
[1] We base our calculation of net income per unit on the weighted-average number of common and subordinated limited partner units outstanding during the period. The weighted-average number of common and subordinated units reflect the conversion of the subordinated units to common units on February 25, 2016. See Notes 5 and 12 for further discussion.
[2] General partner distributions (including IDRs) consist of the 2% general partner interest and IDRs, which represent the right of the general partner to receive increasing percentages of quarterly distributions of available cash from operating surplus in excess of $0.43125 per unit per quarter. See Note 12 for further discussion related to IDRs.
[3] We base our calculation of net income per unit on the weighted-average number of common and subordinated limited partner units outstanding during the period. The weighted-average number of common and subordinated units reflects the conversion of the subordinated units to common units on February 25, 2016.
[4] There were no outstanding common unit equivalents excluded from the diluted earnings per unit calculation during the year ended December 31, 2017. Outstanding common unit equivalents totaling 4,240 and 6,200 were excluded from the diluted earnings per unit calculation for the years ended December 31, 2016 and 2015, respectively, as these common unit equivalents did not have a dilutive effect under the treasury stock method.
[5] On February 25, 2016, all of the Partnership's 11,999,258 outstanding subordinated units converted into common units and began participating pro rata with the other common units in distributions of available cash. Distributions and the Partnership's net income were allocated to the subordinated units through February 24, 2016.