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Net Income Per Unit (Details) (USD $) In Thousands, except Share data, unless otherwise specified | 3 Months Ended
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Mar. 31, 2015 | Mar. 31, 2014
Net Income Per Unit [Line Items] |  |  |  |
Net income attributable to partners | $ 14,640 dkl_NetIncomeLossAttributableToPartners | [1] | $ 14,672 dkl_NetIncomeLossAttributableToPartners | [2],[3]
Less: General partner's distribution (including IDRs) | 868 us-gaap_GeneralPartnerDistributions | [4] | 209 us-gaap_GeneralPartnerDistributions | [4]
Less: Limited partners' distribution | 12,834 us-gaap_LimitedPartnersCapitalAccountDistributionAmount |  | 10,265 us-gaap_LimitedPartnersCapitalAccountDistributionAmount |
Earnings in excess of distributions | 938 us-gaap_UndistributedEarningsAllocatedToParticipatingSecurities |  | 4,198 us-gaap_UndistributedEarningsAllocatedToParticipatingSecurities |
Footnote [Abstract] |  |  |  |
General partner's ownership interest | 2.00%us-gaap_LimitedLiabilityCompanyLLCOrLimitedPartnershipLPManagingMemberOrGeneralPartnerOwnershipInterest |  | 2.00%us-gaap_LimitedLiabilityCompanyLLCOrLimitedPartnershipLPManagingMemberOrGeneralPartnerOwnershipInterest |
Incentive Distribution, Minimum Distribution Level | $ 0.43125 dkl_IncentiveDistributionMinimumDistributionLevel |  |  |
Common Units [Member] |  |  |  |
Net Income Per Unit [Line Items] |  |  |  |
Less: Limited partners' distribution | 6,475 us-gaap_LimitedPartnersCapitalAccountDistributionAmount / us-gaap_LimitedPartnersCapitalAccountByClassAxis = dkl_CommonUnitsMember |  | 5,165 us-gaap_LimitedPartnersCapitalAccountDistributionAmount / us-gaap_LimitedPartnersCapitalAccountByClassAxis = dkl_CommonUnitsMember |
Common units - basic (units) | 12,216,447 us-gaap_WeightedAverageLimitedPartnershipUnitsOutstanding / us-gaap_LimitedPartnersCapitalAccountByClassAxis = dkl_CommonUnitsMember | [1] | 12,152,498 us-gaap_WeightedAverageLimitedPartnershipUnitsOutstanding / us-gaap_LimitedPartnersCapitalAccountByClassAxis = dkl_CommonUnitsMember | [3]
Common units - diluted (units) | 12,356,331 us-gaap_WeightedAverageLimitedPartnershipUnitsOutstandingDiluted / us-gaap_LimitedPartnersCapitalAccountByClassAxis = dkl_CommonUnitsMember | [1] | 12,281,344 us-gaap_WeightedAverageLimitedPartnershipUnitsOutstandingDiluted / us-gaap_LimitedPartnersCapitalAccountByClassAxis = dkl_CommonUnitsMember | [3]
Common- basic (dollars per unit) | $ 0.57 us-gaap_NetIncomeLossPerOutstandingLimitedPartnershipUnitBasicNetOfTax / us-gaap_LimitedPartnersCapitalAccountByClassAxis = dkl_CommonUnitsMember | [1] | $ 0.60 us-gaap_NetIncomeLossPerOutstandingLimitedPartnershipUnitBasicNetOfTax / us-gaap_LimitedPartnersCapitalAccountByClassAxis = dkl_CommonUnitsMember | [3]
Common- diluted (dollars per unit) | $ 0.56 us-gaap_NetIncomeLossNetOfTaxPerOutstandingLimitedPartnershipUnitDiluted / us-gaap_LimitedPartnersCapitalAccountByClassAxis = dkl_CommonUnitsMember | [1] | $ 0.59 us-gaap_NetIncomeLossNetOfTaxPerOutstandingLimitedPartnershipUnitDiluted / us-gaap_LimitedPartnersCapitalAccountByClassAxis = dkl_CommonUnitsMember | [3]
Subordinated unitholders - Delek |  |  |  |
Net Income Per Unit [Line Items] |  |  |  |
Less: Limited partners' distribution | 6,359 us-gaap_LimitedPartnersCapitalAccountDistributionAmount / us-gaap_LimitedPartnersCapitalAccountByClassAxis = dkl_SubordinatedUnitsMember |  | 5,100 us-gaap_LimitedPartnersCapitalAccountDistributionAmount / us-gaap_LimitedPartnersCapitalAccountByClassAxis = dkl_SubordinatedUnitsMember |
Subordinated unitholders - Delek; 11,999,258 units issued and outstanding at March 31, 2015 (11,999,258 at December 31, 2014) |  |  |  |
Net Income Per Unit [Line Items] |  |  |  |
Subordinated units - Delek basic and diluted (units) | 11,999,258 dkl_WeightedAverageLimitedPartnerUnitsOutstandingSubordinatedUnitsBasicAndDiluted / us-gaap_LimitedPartnersCapitalAccountByClassAxis = dkl_SubordinatedDelekMember | [1] | 11,999,258 dkl_WeightedAverageLimitedPartnerUnitsOutstandingSubordinatedUnitsBasicAndDiluted / us-gaap_LimitedPartnersCapitalAccountByClassAxis = dkl_SubordinatedDelekMember | [3]
Subordinated units - Delek (basic and diluted) | $ 0.57 us-gaap_IncomeLossFromContinuingOperationsPerOutstandingLimitedPartnershipAndGeneralPartnershipUnitBasicAndDiluted / us-gaap_LimitedPartnersCapitalAccountByClassAxis = dkl_SubordinatedDelekMember | [1] | $ 0.60 us-gaap_IncomeLossFromContinuingOperationsPerOutstandingLimitedPartnershipAndGeneralPartnershipUnitBasicAndDiluted / us-gaap_LimitedPartnersCapitalAccountByClassAxis = dkl_SubordinatedDelekMember | [3]
General Partner [Member] |  |  |  |
Net Income Per Unit [Line Items] |  |  |  |
Net income attributable to partners | 887 dkl_NetIncomeLossAttributableToPartners / us-gaap_PartnerTypeOfPartnersCapitalAccountAxis = us-gaap_GeneralPartnerMember |  |  |
Less: General partner's distribution (including IDRs) | 868 us-gaap_GeneralPartnerDistributions / us-gaap_PartnerTypeOfPartnersCapitalAccountAxis = us-gaap_GeneralPartnerMember | [4] | 209 us-gaap_GeneralPartnerDistributions / us-gaap_PartnerTypeOfPartnersCapitalAccountAxis = us-gaap_GeneralPartnerMember | [4]
Earnings in excess of distributions | 19 us-gaap_UndistributedEarningsAllocatedToParticipatingSecurities / us-gaap_PartnerTypeOfPartnersCapitalAccountAxis = us-gaap_GeneralPartnerMember |  | 84 us-gaap_UndistributedEarningsAllocatedToParticipatingSecurities / us-gaap_PartnerTypeOfPartnersCapitalAccountAxis = us-gaap_GeneralPartnerMember |
Total partners' earnings | 887 us-gaap_ParticipatingSecuritiesDistributedAndUndistributedEarnings / us-gaap_PartnerTypeOfPartnersCapitalAccountAxis = us-gaap_GeneralPartnerMember |  | 293 us-gaap_ParticipatingSecuritiesDistributedAndUndistributedEarnings / us-gaap_PartnerTypeOfPartnersCapitalAccountAxis = us-gaap_GeneralPartnerMember |
Limited Partner [Member] | Common Units [Member] |  |  |  |
Net Income Per Unit [Line Items] |  |  |  |
Less: Limited partners' distribution | 6,475 us-gaap_LimitedPartnersCapitalAccountDistributionAmount / us-gaap_LimitedPartnersCapitalAccountByClassAxis = dkl_CommonUnitsMember / us-gaap_PartnerTypeOfPartnersCapitalAccountAxis = us-gaap_LimitedPartnerMember |  | 5,165 us-gaap_LimitedPartnersCapitalAccountDistributionAmount / us-gaap_LimitedPartnersCapitalAccountByClassAxis = dkl_CommonUnitsMember / us-gaap_PartnerTypeOfPartnersCapitalAccountAxis = us-gaap_LimitedPartnerMember |
Earnings in excess of distributions | 464 us-gaap_UndistributedEarningsAllocatedToParticipatingSecurities / us-gaap_LimitedPartnersCapitalAccountByClassAxis = dkl_CommonUnitsMember / us-gaap_PartnerTypeOfPartnersCapitalAccountAxis = us-gaap_LimitedPartnerMember |  | 2,070 us-gaap_UndistributedEarningsAllocatedToParticipatingSecurities / us-gaap_LimitedPartnersCapitalAccountByClassAxis = dkl_CommonUnitsMember / us-gaap_PartnerTypeOfPartnersCapitalAccountAxis = us-gaap_LimitedPartnerMember |
Total partners' earnings | 6,939 us-gaap_ParticipatingSecuritiesDistributedAndUndistributedEarnings / us-gaap_LimitedPartnersCapitalAccountByClassAxis = dkl_CommonUnitsMember / us-gaap_PartnerTypeOfPartnersCapitalAccountAxis = us-gaap_LimitedPartnerMember |  | 7,235 us-gaap_ParticipatingSecuritiesDistributedAndUndistributedEarnings / us-gaap_LimitedPartnersCapitalAccountByClassAxis = dkl_CommonUnitsMember / us-gaap_PartnerTypeOfPartnersCapitalAccountAxis = us-gaap_LimitedPartnerMember |
Limited Partner [Member] | Subordinated unitholders - Delek |  |  |  |
Net Income Per Unit [Line Items] |  |  |  |
Less: Limited partners' distribution | 6,359 us-gaap_LimitedPartnersCapitalAccountDistributionAmount / us-gaap_LimitedPartnersCapitalAccountByClassAxis = dkl_SubordinatedUnitsMember / us-gaap_PartnerTypeOfPartnersCapitalAccountAxis = us-gaap_LimitedPartnerMember |  | 5,100 us-gaap_LimitedPartnersCapitalAccountDistributionAmount / us-gaap_LimitedPartnersCapitalAccountByClassAxis = dkl_SubordinatedUnitsMember / us-gaap_PartnerTypeOfPartnersCapitalAccountAxis = us-gaap_LimitedPartnerMember |
Earnings in excess of distributions | 455 us-gaap_UndistributedEarningsAllocatedToParticipatingSecurities / us-gaap_LimitedPartnersCapitalAccountByClassAxis = dkl_SubordinatedUnitsMember / us-gaap_PartnerTypeOfPartnersCapitalAccountAxis = us-gaap_LimitedPartnerMember |  | 2,044 us-gaap_UndistributedEarningsAllocatedToParticipatingSecurities / us-gaap_LimitedPartnersCapitalAccountByClassAxis = dkl_SubordinatedUnitsMember / us-gaap_PartnerTypeOfPartnersCapitalAccountAxis = us-gaap_LimitedPartnerMember |
Total partners' earnings | 6,814 us-gaap_ParticipatingSecuritiesDistributedAndUndistributedEarnings / us-gaap_LimitedPartnersCapitalAccountByClassAxis = dkl_SubordinatedUnitsMember / us-gaap_PartnerTypeOfPartnersCapitalAccountAxis = us-gaap_LimitedPartnerMember |  | 7,144 us-gaap_ParticipatingSecuritiesDistributedAndUndistributedEarnings / us-gaap_LimitedPartnersCapitalAccountByClassAxis = dkl_SubordinatedUnitsMember / us-gaap_PartnerTypeOfPartnersCapitalAccountAxis = us-gaap_LimitedPartnerMember |
Limited Partner [Member] | Subordinated unitholders - Delek; 11,999,258 units issued and outstanding at March 31, 2015 (11,999,258 at December 31, 2014) |  |  |  |
Net Income Per Unit [Line Items] |  |  |  |
Net income attributable to partners | $ 6,815 dkl_NetIncomeLossAttributableToPartners / us-gaap_LimitedPartnersCapitalAccountByClassAxis = dkl_SubordinatedDelekMember / us-gaap_PartnerTypeOfPartnersCapitalAccountAxis = us-gaap_LimitedPartnerMember |  |  |
[1] | The information presented includes the results of operations of the Logistics Assets Predecessor. Prior to the El Dorado Offloading Racks Acquisition and the Tyler Crude Tank Acquisition, the Logistics Assets Predecessor did not record revenues for intercompany throughput and storage services. See Notes 1 and 2 for further discussion.
[2] | There were no revenues or expenses associated with the Tyler Assets Predecessor included in our condensed consolidated financial statements for the three months ended March 31, 2014 as the Tyler Assets were not fully constructed and were not placed into service until January 2015.
[3] | Adjusted to include the historical results of the Logistics Assets Predecessor. See Notes 1 and 2 for further discussion.
[4] | 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 7 for further discussion related to IDRs.

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