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Net Income Per Unit (Details) $ / shares in Units, $ in Thousands | 3 Months Ended | 9 Months Ended |
--- | --- | --- | ---
Sep. 30, 2017 USD ($) $ / shares shares | Sep. 30, 2016 USD ($) $ / shares shares | Sep. 30, 2017 USD ($) $ / shares shares | Sep. 30, 2016 USD ($) $ / shares shares | Feb. 25, 2016 shares
Net Income Per Unit [Line Items] |  |  |  |  |  |
Net income attributable to partners |  | $ 16,923 | $ 13,151 | $ 50,495 | $ 47,492 |
Less: Partners' distribution |  | 17,418 | 15,920 | 51,380 | 46,039 |
Allocation of distributions (in excess of) less than earnings |  | $ (5,347) | $ (6,151) | $ (14,582) | $ (6,990) |
Footnote [Abstract] |  |  |  |  |  |
General partner's ownership interest (as percent) |  | 2.00% | 2.00% | 2.00% | 2.00% |
Quarterly distributions of available cash, minimum level (in dollars per share) | $ / shares |  |  |  | 0.43125 |  |
Common share equivalents excluded (in shares) | shares |  | 0 | 6,540 | 10,090 | 6,540 |
Common Units [Member] |  |  |  |  |  |
Net Income Per Unit [Line Items] |  |  |  |  |  |
Common units - (basic) (in shares) | shares | [1] | 24,361,457 | 24,303,740 | 24,341,921 | 21,878,935 |
Common units - (diluted) (in shares) | shares | [1] | 24,389,582 | 24,380,334 | 24,382,426 | 21,962,733 |
Common units - (basic) (in dollars per share) | $ / shares | [1] | $ 0.50 | $ 0.41 | $ 1.52 | $ 1.61 |
Common units - (diluted) (in dollars per share) | $ / shares | [1] | $ 0.50 | $ 0.41 | $ 1.52 | $ 1.60 |
Subordinated unitholders - Delek [Member] |  |  |  |  |  |
Net Income Per Unit [Line Items] |  |  |  |  |  |
Subordinated units - Delek (basic and diluted) (in shares) | shares | [1] | 0 | 0 | 0 | 2,408,610 |
Subordinated units - Delek (basic and diluted) (in dollars per share) | $ / shares | [1] | $ 0.00 | $ 0.00 | $ 0.00 | $ 1.64 |
Footnote [Abstract] |  |  |  |  |  |
Common units outstanding (in shares) | shares |  |  |  |  |  | 11,999,258
General Partner [Member] |  |  |  |  |  |
Net Income Per Unit [Line Items] |  |  |  |  |  |
Net income attributable to partners |  |  |  | $ 13,406 |  |
Less: General partner's distribution (including IDRs) | [2] | $ 4,852 | $ 3,382 | 13,697 | $ 8,443 |
Allocation of distributions (in excess of) less than earnings |  | (107) | (123) | (291) | (140) |
Total partner's earnings |  | 4,745 | 3,259 | 13,406 | 8,303 |
Limited Partner [Member] | Common Units [Member] |  |  |  |  |  |
Net Income Per Unit [Line Items] |  |  |  |  |  |
Less: Partners' distribution |  | 17,418 | 15,920 | 51,380 | 41,615 |
Allocation of distributions (in excess of) less than earnings |  | (5,240) | (6,028) | (14,291) | (6,368) |
Total partner's earnings |  | $ 12,178 | $ 9,892 | $ 37,089 | $ 35,247 |
Common units - (basic) (in shares) | shares | [3] | 24,361,457 | 24,303,740 | 24,341,921 | 21,878,935 |
Common units - (diluted) (in shares) | shares | [3] | 24,389,582 | 24,380,334 | 24,382,426 | 21,962,733 |
Common units - (basic) (in dollars per share) | $ / shares | [3] | $ 0.50 | $ 0.41 | $ 1.52 | $ 1.61 |
Common units - (diluted) (in dollars per share) | $ / shares | [3],[4] | $ 0.50 | $ 0.41 | $ 1.52 | $ 1.60 |
Limited Partner [Member] | Subordinated Units [Member] |  |  |  |  |  |
Net Income Per Unit [Line Items] |  |  |  |  |  |
Less: Partners' distribution |  | $ 0 | $ 0 | $ 0 | $ 4,424 |
Allocation of distributions (in excess of) less than earnings |  | 0 | 0 | 0 | (482) |
Total partner's earnings |  | $ 0 | $ 0 | $ 0 | $ 3,942 |
Subordinated units - Delek (basic and diluted) (in shares) | shares | [3],[5] | 0 | 0 | 0 | 2,408,610 |
Subordinated units - Delek (basic and diluted) (in dollars per share) | $ / shares | [3] | $ 0.00 | $ 0.00 | $ 0.00 | $ 1.64 |
[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 Note 7 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 8 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] | Outstanding common unit equivalents totaling 10,090 were excluded from the diluted earnings per unit calculation for the nine months ended September 30, 2017. There were no outstanding common unit equivalents excluded from the diluted earnings per unit calculation for the three months ended September 30, 2017. Outstanding common unit equivalents of 6,540 were excluded from the diluted earnings per unit calculation for both the three and nine months ended September 30, 2016, as these common unit equivalents did not have a dilutive effect under the treasury stock method.
[5] | On February 25, 2016, each 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.

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