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Equity (Tables) | 9 Months Ended
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Sep. 30, 2018
Equity [Abstract] |
Schedule of Limited Partners' Capital Account by Class [Table Text Block] | The table below summarizes the changes in the number of units outstanding from December 31, 2017 through September 30, 2018.
|  | Common - Public |  | Common - Delek |  | General Partner |  | Total
Balance at December 31, 2017 |  | 9,088,587 |  |  | 15,294,046 |  |  | 497,604 |  |  | 24,880,237 |
General partner units issued to maintain 2% interest |  | — |  |  | — |  |  | 257 |  |  | 257 |
Unit-based compensation awards (1) |  | 12,550 |  |  | — |  |  | — |  |  | 12,550 |
Balance at September 30, 2018 |  | 9,101,137 |  |  | 15,294,046 |  |  | 497,861 |  |  | 24,893,044 |
(1) Unit-based compensation awards are presented net of 598 units withheld for taxes.
Summary of Changes in Carrying Amount of Equity | The summarized changes in the carrying amount of our equity from December 31, 2017 through September 30, 2018 are as follows (in thousands):
|  | Common - Public |  | Common - Delek |  | General Partner |  | Total
Balance at December 31, 2017 |  | $ | 174,378 |  |  | $ | (197,206 | ) |  | $ | (6,397 | ) |  | $ | (29,225 | )
Distributions to unitholders and general partner related to Big Spring Logistic Assets Acquisition | — |  |  | (96,822 | ) |  | (1,976 | ) |  | (98,798 | )
Cash distributions (1) | (20,500 | ) |  | (34,335 | ) |  | (17,010 | ) |  | (71,845 | )
Net income attributable to partners | 18,808 |  |  | 31,617 |  |  | 18,478 |  |  | 68,903 |
Unit-based compensation | 189 |  |  | 319 |  |  | 10 |  |  | 518 |
Other | — |  |  | — |  |  | 20 |  |  | 20 |
Balance at September 30, 2018 |  | $ | 172,875 |  |  | $ | (296,427 | ) |  | $ | (6,875 | ) |  | $ | (130,427 | )
(1) Cash distributions include $0.1 million related to distribution equivalents on vested phantom units.
Summary of Allocation of General Partner's Interest in Net Income | The following table presents the allocation of the general partner's interest in net income (in thousands, except percentage of ownership interest):
|  | Three Months Ended September 30, |  | Nine Months Ended September 30,
|  | 2018 |  | 2017 |  | 2018 |  | 2017
Net income attributable to partners |  | $ | 23,326 |  |  | $ | 16,923 |  |  | $ | 68,903 |  |  | $ | 50,495 |
Less: General partner's IDRs |  | (6,295 | ) |  | (4,496 | ) |  | (17,449 | ) |  | (12,649 | )
Net income available to partners |  | $ | 17,031 |  |  | $ | 12,427 |  |  | $ | 51,454 |  |  | $ | 37,846 |
General partner's ownership interest |  | 2.0 | % |  | 2.0 | % |  | 2.0 | % |  | 2.0 | %
General partner's allocated interest in net income |  | $ | 341 |  |  | $ | 249 |  |  | $ | 1,029 |  |  | $ | 757 |
General partner's IDRs |  | 6,295 |  |  | 4,496 |  |  | 17,449 |  |  | 12,649 |
Total general partner's interest in net income |  | $ | 6,636 |  |  | $ | 4,745 |  |  | $ | 18,478 |  |  | $ | 13,406 |
Summary of Percentage Allocations of Available Cash From Operating Surplus | The following table illustrates the percentage allocations of available cash from operating surplus between the unitholders and our general partner based on the specified target distribution levels. The amounts set forth under “Marginal Percentage Interest in Distributions” are the percentage interests of our general partner and our unitholders in any available cash from operating surplus that we distribute up to and including the corresponding amount in the column “Total Quarterly Distribution per Unit Target Amount.” The percentage interests shown for our unitholders and our general partner for the minimum quarterly distribution are also applicable to quarterly distribution amounts that are less than the minimum quarterly distribution. The percentage interests set forth below for our general partner include its 2.0% general partner interest and assume that (i) our general partner has contributed any additional capital necessary to maintain its 2.0% general partner interest and (ii) our general partner has not transferred its IDRs.
|  |  | Target Quarterly Distribution per Unit |  | Marginal Percentage Interest in Distributions
|  |  | Target Amount |  | Unitholders |  | General Partner
Minimum Quarterly Distribution |  |  | $ | 0.37500 |  |  | 98.0 | % |  | 2.0 | %
First Target Distribution |  | above | $ | 0.37500 |  |  | 98.0 | % |  | 2.0 | %
|  | up to | $ | 0.43125 |  |  |  |  |
Second Target Distribution |  | above | $ | 0.43125 |  |  | 85.0 | % |  | 15.0 | %
|  | up to | $ | 0.46875 |  |  |  |  |
Third Target Distribution |  | above | $ | 0.46875 |  |  | 75.0 | % |  | 25.0 | %
|  | up to | $ | 0.56250 |  |  |  |  |
Thereafter |  | thereafter | $ | 0.56250 |  |  | 50.0 | % |  | 50.0 | %
Summary of Distributions | The table below summarizes the quarterly distributions related to our quarterly financial results:
Quarter Ended |  | Total Quarterly Distribution Per Limited Partner Unit |  | Total Quarterly Distribution Per Limited Partner Unit, Annualized |  | Total Cash Distribution, including general partner interest and IDRs (in thousands) |  | Date of Distribution |  | Unitholders Record Date
September 30, 2017 |  | $ | 0.715 |  |  | $ | 2.86 |  |  | $ | 22,270 |  |  | November 14, 2017 |  | November 7, 2017
December 31, 2017 |  | $ | 0.725 |  |  | $ | 2.90 |  |  | $ | 22,777 |  |  | February 12, 2018 |  | February 2, 2018
March 31, 2018 |  | $ | 0.750 |  |  | $ | 3.00 |  |  | $ | 23,997 |  |  | May 15, 2018 |  | May 7, 2018
June 30, 2018 |  | $ | 0.770 |  |  | $ | 3.08 |  |  | $ | 24,984 |  |  | August 13, 2018 |  | August 3, 2018
September 30, 2018 |  | $ | 0.790 |  |  | $ | 3.16 |  |  | $ | 25,960 |  |  | November 9, 2018 (1) |  | November 2, 2018
(1) Expected date of distribution. The allocation of total quarterly cash distributions expected to be made on November 9, 2018 to general and limited partners for the three and nine months ended September 30, 2018 and the allocation of total quarterly cash distributions for the three and nine months ended September 30, 2017 are set forth in the table below. Distributions earned with respect to a given period are declared subsequent to quarter end. Therefore, the table below presents total cash distributions applicable to the period in which the distributions are earned (in thousands, except per unit amounts):
|  | Three Months Ended September 30, |  | Nine Months Ended September 30,
|  | 2018 |  | 2017 |  | 2018 |  | 2017
General partner's distributions: |  |  |  |  |  |  |  |
General partner's distributions |  | $ | 393 |  |  | $ | 356 |  |  | $ | 1,149 |  |  | $ | 1,048 |
General partner's IDRs |  | 6,295 |  |  | 4,496 |  |  | 17,449 |  |  | 12,649 |
Total general partner's distributions |  | 6,688 |  |  | 4,852 |  |  | 18,598 |  |  | 13,697 |
Limited partners' distributions: |  |  |  |  |  |  |  |
Common limited partners' distributions |  | 19,272 |  |  | 17,418 |  |  | 56,343 |  |  | 51,380 |
Total cash distributions |  | $ | 25,960 |  |  | $ | 22,270 |  |  | $ | 74,941 |  |  | $ | 65,077 |
Cash distributions per limited partner unit |  | $ | 0.790 |  |  | $ | 0.715 |  |  | $ | 2.310 |  |  | $ | 2.110 |

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