XML 107 R62.htm IDEA: XBRL DOCUMENT
v3.19.3.a.u2

Net Income Per Unit (Details) - USD ($) $ / shares in Units, $ in Thousands | 3 Months Ended | 12 Months Ended
--- | --- | ---
Dec. 31, 2019 | Dec. 31, 2019 | Dec. 31, 2018 | Dec. 31, 2017
Net income per unit [Line Items] |  |  |  |
Net income attributable to partners |  | $ 96,749 | $ 90,182 | $ 69,409
(Distributions) earnings excess |  | $ (20,616) | $ (11,708) | $ (18,445)
Weighted average limited partner units outstanding: |  |  |  |
Common units - (basic) (in units) |  | 24,413,294 | 24,390,286 | 24,348,063
Common units - (diluted) (in units) |  | 24,418,641 | 24,396,881 | 24,376,972
Net income per limited partner unit: |  |  |  |
Common units - (basic) (in usd per unit) |  | $ 2.61 | $ 2.65 | $ 2.09
Common units - (diluted) (in usd per unit) |  | $ 2.61 | $ 2.65 | $ 2.09
Footnote [Abstract] |  |  |  |
General partner's ownership interest |  | 2.00% | 2.00% | 2.00%
Common units excluded from computation of earnings per share (in units) |  | 0 | 1,776 | 0
Maximum |  |  |  |
Footnote [Abstract] |  |  |  |
Distribution payment targets (in usd per unit) | $ 0.43125 |  |  |
General Partner |  |  |  |
Net income per unit [Line Items] |  |  |  |
Net income attributable to partners |  | $ 33,080 | $ 25,543 | $ 18,429
General partner's distribution |  | 33,492 | 25,777 | 18,797
(Distributions) earnings excess |  | (412) | (234) | (368)
Total earnings |  | 33,080 | 25,543 | 18,429
Limited Partner |  |  |  |
Net income per unit [Line Items] |  |  |  |
Limited partners' distribution |  | 83,873 | 76,113 | 69,057
(Distributions) earnings excess |  | (20,204) | (11,474) | (18,077)
Total earnings |  | $ 63,669 | $ 64,639 | $ 50,980
Weighted average limited partner units outstanding: |  |  |  |
Common units - (basic) (in units) |  | 24,413,294 | 24,390,286 | 24,348,063
Common units - (diluted) (in units) |  | 24,418,641 | 24,396,881 | 24,376,972
Net income per limited partner unit: |  |  |  |
Common units - (basic) (in usd per unit) |  | $ 2.61 | $ 2.65 | $ 2.09
Common units - (diluted) (in usd per unit) |  | $ 2.61 | $ 2.65 | $ 2.09

X
- Definition Total quarterly distribution payment target amount + References No definition available. + Details
Name: | dk_DistributionPaymentTargets
Namespace Prefix: | dk_
Data Type: | num:perShareItemType
Balance Type: | na
Period Type: | duration

X
- Definition Footnote [Abstract] + References No definition available. + Details
Name: | dk_FootnoteAbstract
Namespace Prefix: | dk_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Aggregate amount of net income attributable to the partners, which excludes the amount of net income attributable to predecessor entities. + References No definition available. + Details
Name: | dk_NetIncomeLossAttributableToPartners
Namespace Prefix: | dk_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Net income per limited partner unit: [Abstract] + References No definition available. + Details
Name: | dk_NetIncomePerLimitedPartnerUnitAbstract
Namespace Prefix: | dk_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Securities (including those issuable pursuant to contingent stock agreements) that could potentially dilute basic earnings per share (EPS) or earnings per unit (EPU) in the future that were not included in the computation of diluted EPS or EPU because to do so would increase EPS or EPU amounts or decrease loss per share or unit amounts for the period presented. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 260 -SubTopic 10 -Section 50 -Paragraph 1 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=6371337&loc=d3e3550-109257 + Details
Name: | us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount
Namespace Prefix: | us-gaap_
Data Type: | xbrli:sharesItemType
Balance Type: | na
Period Type: | duration

X
- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. + References No definition available. + Details
Name: | us-gaap_EarningsPerShareDilutedLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Distributions from earnings to the general partner of a partnership included in the consolidated financial statements. + References No definition available. + Details
Name: | us-gaap_GeneralPartnerDistributions
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Percentage investment held by the managing member or general partner of the limited liability company (LLC) or limited partnership (LP). + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 272 -SubTopic 10 -Section 50 -Paragraph 3 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=6373374&loc=d3e70478-108055 + Details
Name: | us-gaap_LimitedLiabilityCompanyLLCOrLimitedPartnershipLPManagingMemberOrGeneralPartnerOwnershipInterest
Namespace Prefix: | us-gaap_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | duration

X
- Definition The total amount of distributions to limited partners. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 10 -Section S99 -Paragraph 5 -Subparagraph (SAB TOPIC 4.F) -URI http://asc.fasb.org/extlink&oid=27012166&loc=d3e187171-122770 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 272 -SubTopic 10 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6373374&loc=d3e70434-108055 + Details
Name: | us-gaap_LimitedPartnersCapitalAccountDistributionAmount
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Per unit of ownership amount after tax of income (loss) available to limited partnership (LP) unit-holder and units that would have been outstanding assuming the issuance of limited partner units for dilutive potential units outstanding. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 10 -Section S99 -Paragraph 5 -Subparagraph (SAB Topic 4.F) -URI http://asc.fasb.org/extlink&oid=27012166&loc=d3e187171-122770 + Details
Name: | us-gaap_NetIncomeLossNetOfTaxPerOutstandingLimitedPartnershipUnitDiluted
Namespace Prefix: | us-gaap_
Data Type: | num:perShareItemType
Balance Type: | na
Period Type: | duration

X
- Definition Per unit of ownership amount after tax of income (loss) available to outstanding limited partnership (LP) unit-holder. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 10 -Section S99 -Paragraph 5 -Subparagraph (SAB Topic 4.F) -URI http://asc.fasb.org/extlink&oid=27012166&loc=d3e187171-122770 + Details
Name: | us-gaap_NetIncomeLossPerOutstandingLimitedPartnershipUnitBasicNetOfTax
Namespace Prefix: | us-gaap_
Data Type: | num:perShareItemType
Balance Type: | na
Period Type: | duration

X
- Definition Amount of earnings (loss) distributed and earnings (loss) allocated to participating securities for the basic earnings (loss) per share or per unit calculation under the two-class method. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 260 -SubTopic 10 -Section 45 -Paragraph 60B -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=117326831&loc=SL5780133-109256 + Details
Name: | us-gaap_ParticipatingSecuritiesDistributedAndUndistributedEarningsLossBasic
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Amount of undistributed earnings (loss) allocated to participating securities for the basic earnings (loss) per share or per unit calculation under the two-class method. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 260 -SubTopic 10 -Section 45 -Paragraph 60B -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=117326831&loc=SL5780133-109256 + Details
Name: | us-gaap_UndistributedEarningsLossAllocatedToParticipatingSecuritiesBasic
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Weighted average number of limited partnership units outstanding determined by relating the portion of time within a reporting period that limited partnership units have been outstanding to the total time in that period. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 10 -Section S99 -Paragraph 5 -Subparagraph (SAB Topic 4.F) -URI http://asc.fasb.org/extlink&oid=27012166&loc=d3e187171-122770 + Details
Name: | us-gaap_WeightedAverageLimitedPartnershipUnitsOutstanding
Namespace Prefix: | us-gaap_
Data Type: | xbrli:sharesItemType
Balance Type: | na
Period Type: | duration

X
- Definition Weighted average number of limited partnership units outstanding determined by relating the portion of time within a reporting period that limited partnership units have been outstanding to the total time in that period. Used in the calculation of diluted net income or loss per limited partnership unit. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 10 -Section S99 -Paragraph 5 -Subparagraph (SAB Topic 4.F) -URI http://asc.fasb.org/extlink&oid=27012166&loc=d3e187171-122770 + Details
Name: | us-gaap_WeightedAverageLimitedPartnershipUnitsOutstandingDiluted
Namespace Prefix: | us-gaap_
Data Type: | xbrli:sharesItemType
Balance Type: | na
Period Type: | duration

X
- References No definition available. + Details
Name: | us-gaap_WeightedAverageNumberOfSharesOutstandingAbstract
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Details
Name: | srt_RangeAxis=srt_MaximumMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_PartnerTypeOfPartnersCapitalAccountAxis=us-gaap_GeneralPartnerMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_PartnerTypeOfPartnersCapitalAccountAxis=us-gaap_LimitedPartnerMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |