Delek Logistics Partners (DKL) 10-K 1 Mar 21 2020 FY Annual report Financial data

Cover Page

Cover Page - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2020	Feb. 19, 2021	Jun. 30, 2020
Entity Information [Line Items]
Document Type	10-K
Document Annual Report	true
Document Period End Date	Dec. 31, 2020
Document Transition Report	false
Entity File Number	001-35721
Entity Registrant Name	DELEK LOGISTICS PARTNERS, LP
Entity Incorporation, State or Country Code	DE
Entity Tax Identification Number	45-5379027
Entity Address, Address Line One	7102 Commerce Way
Entity Address, City or Town	Brentwood
Entity Address, State or Province	TN
Entity Address, Postal Zip Code	37027
City Area Code	615
Local Phone Number	771-6701
Title of 12(b) Security	Common Units Representing Limited Partner Interests
Trading Symbol	DKL
Security Exchange Name	NYSE
Entity Well-known Seasoned Issuer	No
Entity Voluntary Filers	No
Entity Current Reporting Status	Yes
Entity Interactive Data Current	Yes
Entity Filer Category	Accelerated Filer
Entity Small Business	false
Entity Emerging Growth Company	false
ICFR Auditor Attestation Flag	true
Entity Shell Company	false
Entity Public Float			$ 189,900
Common Stock, Shares, Outstanding		43,443,336
Document Fiscal Year Focus	2020
Document Fiscal Period Focus	FY
Amendment Flag	false
Entity Central Index Key	0001552797
Current Fiscal Year End Date	--12-31

Consolidated Balance Sheets

Consolidated Balance Sheets - USD ($) $ in Thousands		Dec. 31, 2020	Dec. 31, 2019
Current assets:
Cash and cash equivalents		$ 4,243	$ 5,545
Accounts receivable		15,676	13,204
Accounts receivable from related parties		5,932	0
Inventory		3,127	12,617
Other current assets		331	2,204
Total current assets		29,309	33,570
Property, plant and equipment:
Property, plant and equipment		692,282	461,325
Less: accumulated depreciation		(227,470)	(166,281)
Property, plant and equipment, net		464,812	295,044
Equity method investments		253,675	246,984
Operating lease right-of-use assets		24,199	3,745
Goodwill		12,203	12,203
Marketing Contract Intangible, net		123,788	130,999
Rights-of-way		36,316	15,597
Other non-current assets		12,115	6,305
Total assets		956,417	744,447
Current liabilities:
Accounts payable		6,659	12,471
Accounts payable to related parties		0	8,898
Interest payable		2,452	2,572
Excise and other taxes payable		4,969	3,941
Accrued expenses and other current liabilities		5,529	5,765
Current portion of operating lease liabilities		8,691	1,435
Total current liabilities		28,300	35,082
Non-current liabilities:
Long-term debt		992,291	833,110
Asset retirement obligations		6,015	5,588
Deferred tax liabilities		616	215
Operating lease liabilities, net of current portion		15,418	2,310
Other non-current liabilities		22,078	19,261
Total non-current liabilities		1,036,418	860,484
Equity (Deficit):
Total deficit (equity)		(108,301)	(151,119)
Total liabilities and deficit		956,417	744,447
General Partner
Equity (Deficit):
Total deficit (equity)	[1]	0	(5,042)
Common- Public | Limited Partner
Equity (Deficit):
Total deficit (equity)		164,614	164,436
Common- Delek | Limited Partner
Equity (Deficit):
Total deficit (equity)		$ (272,915)	$ (310,513)
[1]	See Note 4 for a description of the IDR Restructuring Transaction.

Consolidated Balance Sheets (Pa

Consolidated Balance Sheets (Parenthetical) - shares	Dec. 31, 2020	Dec. 31, 2019
General partner, issued (in units)	0	498,482
General partner, outstanding (in units)	0	498,482
Common - Public
Common unitholders, outstanding (in units)	8,697,468
Common - Delek Holdings
Common unitholders, outstanding (in units)	34,745,868
Limited Partner | Common - Public
Common unitholders, issued (in units)	8,697,468	9,131,579
Common unitholders, outstanding (in units)	8,697,468	9,131,579
Limited Partner | Common - Delek Holdings
Common unitholders, issued (in units)	34,745,868	15,294,046
Common unitholders, outstanding (in units)	34,745,868	15,294,046

Consolidated Statements of Inco

Consolidated Statements of Income and Comprehensive Income - USD ($) $ in Thousands		12 Months Ended
		Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Net revenues:
Affiliate	[1]	$ 382,666	$ 261,014	$ 240,809
Third party		180,752	322,978	416,800
Net revenues		563,418	583,992	657,609
Cost of sales:
Cost of materials and other		269,094	336,473	429,061
Operating expenses (excluding depreciation and amortization presented below)		53,846	71,341	55,924
Depreciation and amortization		33,737	24,893	24,108
Total cost of sales		356,677	432,707	509,093
Operating expenses related to wholesale business (excluding depreciation and amortization presented below)		2,433	2,816	2,820
General and administrative expenses		22,587	20,815	17,166
Depreciation and amortization		1,994	1,808	1,882
Other operating (income) expense, net		(66)	34	891
Total operating costs and expenses		383,625	458,180	531,852
Operating income		179,793	125,812	125,757
Interest expense, net		42,874	47,328	41,263
Income from equity method investments		(22,693)	(19,832)	(6,230)
Other expense, net		133	600	8
Total non-operating expenses, net		20,314	28,096	35,041
Income before income tax expense		159,479	97,716	90,716
Income tax expense		223	967	534
Net income attributable to partners		159,256	96,749	90,182
Comprehensive income attributable to partners		159,256	96,749	90,182
General partner's interest in net income, including incentive distribution rights	[2]	18,724	33,080	25,543
Limited partners' interest in net income		$ 140,532	$ 63,669	$ 64,639
Net income per limited partner unit:
Common units - basic (in usd per unit)		$ 4.18	$ 2.61	$ 2.65
Common - diluted (in usd per unit)		$ 4.18	$ 2.61	$ 2.65
Weighted average limited partner units outstanding:
Common units - (basic) (in units)		33,594,284	24,413,294	24,390,286
Common units - (diluted) (in units)		33,597,418	24,418,641	24,396,881
Cash distributions per limited partner unit (in usd per unit)		$ 3.605	$ 3.440	$ 3.120
[1]	See Note 4 for a description of our material affiliate revenue transactions.
[2]	See Note 4 for a description of the IDR Restructuring Transaction.

Consolidated Statements of Part

Consolidated Statements of Partners' Equity (Deficit) - USD ($) $ in Thousands		Total		Delek Trucking	Big Spring Logistic Assets	Limited PartnerCommon - Public		Limited PartnerCommon - Delek Holdings		Limited PartnerCommon - Delek HoldingsDelek Trucking	Limited PartnerCommon - Delek HoldingsBig Spring Logistic Assets	General Partner		General PartnerDelek Trucking	General PartnerBig Spring Logistic Assets
Beginning balance at Dec. 31, 2017		$ (29,225)				$ 174,378		$ (197,206)				$ (6,397)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Cash distributions		(97,836)	[1]		$ (98,798)	(27,721)	[1]	(46,417)	[1]		$ (96,822)	(23,698)	[1]		$ (1,976)
GP Units Issued to maintain 2% interest		26										26
Sponsorship contribution of fixed assets		154						151				3
Net income attributable to partners		90,182				24,119		40,520				25,543
Issuance of units in connection with the Big Spring Gathering Assets Acquisition		0
Other		674				247		414				13
Ending balance at Dec. 31, 2018		(134,823)				171,023		(299,360)				(6,486)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Distribution equivalents on vested phantom units		100
Cash distributions	[1]	(113,668)				(30,626)		(51,388)				(31,654)
GP Units Issued to maintain 2% interest		8										8
Sponsorship contribution of fixed assets		0
Net income attributable to partners		96,749				23,813		39,856				33,080
Issuance of units in connection with the Big Spring Gathering Assets Acquisition		0
Other		615				226		379				10
Ending balance at Dec. 31, 2019		(151,119)				164,436		(310,513)				(5,042)	[2]
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Cash distributions		(136,832)	[1]	$ (47,558)		(31,532)	[1]	(77,665)	[1]	$ (46,607)		(27,635)	[1]	$ (951)
GP Units Issued to maintain 2% interest		10										10
Sponsorship contribution of fixed assets		2,938
Net income attributable to partners		159,256				36,324		104,208				18,724
Delek Holdings Unit purchases from public						(4,979)		4,979
Issuance of units in connection with the Big Spring Gathering Assets Acquisition		109,513						107,323				2,190
Cash distribution to general partner for conversion of its economic interest and IDR elimination		(45,000)										(45,000)
Conversion of GP economic interest								(57,702)				57,702
Sponsor contribution of fixed assets		2,938
Other		491				365		124				2
Ending balance at Dec. 31, 2020		$ (108,301)				$ 164,614		$ (272,915)				$ 0	[2]
[1]	Cash distributions include a nominal amount for the years ended December 31, 2020 and 2019, respectively, related to distribution equivalents on vested phantom units. Cash distributions include $0.1 million for the year ended December 31, 2018 related to distribution equivalents on vested phantom units..
[2]	See Note 4 for a description of the IDR Restructuring Transaction.

Consolidated Statements of Cash

Consolidated Statements of Cash Flows - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Cash flows from operating activities:
Net income	$ 159,256	$ 96,749	$ 90,182
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization	35,731	26,701	25,990
Non-cash lease expense	6,075	193	0
Amortization of customer contract intangible assets	7,211	7,211	6,009
Amortization of deferred revenue	(1,888)	(1,688)	(1,497)
Amortization of deferred financing costs and debt discount	2,412	2,629	2,577
Accretion of asset retirement obligations	427	397	359
(Gain) loss on disposal of assets	(66)	(197)	891
Deferred income taxes	401	496	152
Income from equity method investments	(22,693)	(19,832)	(6,230)
Dividends from equity method investments	25,436	16,108	6,936
Other non-cash adjustments	491	1,061	674
Changes in assets and liabilities:
Accounts receivable	(2,472)	8,382	1,427
Inventories and other current assets	11,363	(7,702)	15,178
Accounts payable and other current liabilities	(13,479)	(4,836)	(1,747)
Accounts receivable/payable to related parties	(14,628)	1,065	9,038
Non-current assets and liabilities, net	(561)	3,662	3,019
Net cash provided by operating activities	193,016	130,399	152,958
Cash flows from investing activities:
Asset acquisitions from Delek Holdings, net of assumed liabilities	(100,527)	0	(72,380)
Purchases of property, plant and equipment	(13,271)	(9,070)	(12,931)
Proceeds from sales of property, plant and equipment	107	144	502
Purchases of intangible assets	(13)	0	(144,219)
Distributions from equity method investments	2,741	804	1,162
Equity method investment contributions	(12,175)	(139,294)	(173)
Net cash used in investing activities	(123,138)	(147,416)	(228,039)
Cash flows from financing activities:
Proceeds from issuance of additional units to maintain 2% General Partner interest	10	8	26
Distributions to general partner	(27,635)	(31,654)	(23,698)
Distributions to common unitholders - public	(31,532)	(30,626)	(27,721)
Distributions to common unitholders - Delek Holdings	(77,665)	(51,388)	(46,417)
Distributions to Delek Holdings unitholders and general partner related to Big Spring Logistics Assets Acquisition	0	0	(98,798)
Distributions to Delek Holdings unitholders and general partner related to Trucking Assets Acquisition	(47,558)	0	0
Distribution to general partner for conversion of its interest and IDR elimination	(45,000)	0	0
Proceeds from revolving credit facility	599,600	564,700	735,000
Payments on revolving credit facility	(441,400)	(433,000)	(458,200)
Deferred financing costs paid	0	0	(5,264)
Net cash (used in) provided by financing activities	(71,180)	18,040	74,928
Net (decrease) increase in cash and cash equivalents	(1,302)	1,023	(153)
Cash and cash equivalents at the beginning of the period	5,545	4,522	4,675
Cash and cash equivalents at the end of the period	4,243	5,545	4,522
Cash paid during the period for:
Interest	40,582	44,791	38,959
Income taxes	98	144	137
Non-cash investing activities:
Increase (decrease) in accrued capital expenditures	198	917	(1,363)
Issuance of units in connection with the Big Spring Gathering Assets Acquisition	109,513	0	0
Non-cash financing activities:
Sponsor contribution of property, plant and equipment	2,938	0	154
Non-cash lease liability arising from obtaining right of use assets during the period	32,090	1,285	0
Non-cash lease liability arising from recognition of right of use assets upon adoption of ASU 2016-02	$ 0	$ 2,654	$ 0

General

General	12 Months Ended
	Dec. 31, 2020
Organization, Consolidation and Presentation of Financial Statements [Abstract]
General	General Organization As used in this report, the terms "Delek Logistics Partners, LP," the "Partnership," "we," "us," or "our" may refer to Delek Logistics Partners, LP, one or more of its consolidated subsidiaries or all of them taken as a whole. The Partnership is a Delaware limited partnership formed in April 2012 by Delek US Holdings, Inc. ("Delek Holdings") and its subsidiary Delek Logistics GP, LLC, our general partner (our "general partner"). Effective August 13, 2020, the Partnership closed the transaction contemplated by a definitive exchange agreement with the general partner to eliminate all of the incentive distribution rights ("IDRs") held by the general partner and convert the 2.0% economic general partner interest into a non-economic general partner interest, all in exchange for 14.0 million newly issued common limited partner units and $45.0 million in cash ("IDR Restructuring Transaction"). Contemporaneously, Delek Holdings purchased a 5.2% ownership interest in our general partner from certain affiliates, who were also members of our general partner's management and board of directors. See Note 4 of the accompanying consolidated financial statements for further information. Effective May 1, 2020, the Partnership, through its wholly-owned subsidiary DKL Transportation, LLC, acquired Delek Trucking, LLC consisting of certain leased and owned tractors and trailers and related assets (the "Trucking Assets") from Delek Holdings, such transaction the "Trucking Assets Acquisition." See Note 3 of the accompanying consolidated financial statements for further information. Effective March 31, 2020, the Partnership, through its wholly-owned subsidiary DKL Permian Gathering, LLC, acquired from Delek Holdings a crude oil gathering system located in Howard, Borden and Martin Counties, Texas (the "Big Spring Gathering Assets"), and certain related assets, such transaction the "Big Spring Gathering Assets Acquisition." See Note 3 of the accompanying consolidated financial statements for further information. Effective March 1, 2018, the Partnership, through its wholly-owned subsidiary DKL Big Spring, LLC, acquired from Delek Holdings certain logistics assets primarily located at or adjacent to Delek Holdings' refinery near Big Spring, Texas (the "Big Spring Refinery") and Delek Holdings' light products distribution terminal located in Stephens County, Oklahoma (collectively, the "Big Spring Logistics Assets" and such transaction the "Big Spring Logistics Assets Acquisition"). See Note 3 of the accompanying consolidated financial statements for further information regarding the Big Spring Logistics Assets Acquisition. Description of Business The Partnership primarily owns and operates crude oil, intermediate and refined products logistics and marketing assets. We gather, transport, offload and store crude oil and intermediate products and market, distribute, transport and store refined products primarily in select regions of the southeastern United States and Texas for Delek Holdings and third parties. A substantial majority of our existing assets are both integral to and dependent upon the success of Delek Holdings' refining operations, as many of our assets are contracted exclusively to Delek Holdings in support of its Tyler, El Dorado and Big Spring refineries.

Accounting Policies

Accounting Policies	12 Months Ended
	Dec. 31, 2020
Accounting Policies [Abstract]
Accounting Policies	Accounting Policies Basis of Presentation Our consolidated financial statements include the accounts of the Partnership and its subsidiaries. We have evaluated subsequent events through the filing of this Annual Report on Form 10-K. Any material subsequent events that occurred during this time have been properly recognized or disclosed in our financial statements. The preparation of our financial statements in conformity with U.S. generally accepted accounting principles (“GAAP”) and in accordance with the rules and regulations of the Securities and Exchange Commission (“SEC”) requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities and disclosure of contingent assets and liabilities at the date of the financial statements and the reported amounts of revenues and expenses during the reporting period. Actual results could differ from those estimates. In the opinion of management, all adjustments necessary for a fair presentation of the financial position and the results of operations have been included. All intercompany accounts and transactions have been eliminated. Such intercompany transactions do not include those with Delek Holdings' or our general partner, which are presented as related party in these accompanying consolidated financial statements. All adjustments are of a normal, recurring nature. Reclassifications Certain immaterial reclassifications have been made to prior period presentation in order to conform to the current year presentation. Risks and Uncertainties Arising from the COVID-19 Pandemic The outbreak of COVID-19 and its development into a pandemic in March 2020 (the "COVID-19 Pandemic") has resulted in significant economic disruption globally, including in the U.S. and specific geographic areas where we operate. Actions taken by various governmental authorities, individuals and companies around the world to prevent the spread of COVID-19 through social distancing have restricted travel, many business operations, public gatherings and the overall level of individual movement and in-person interaction across the globe. This has in turn significantly reduced global economic activity and resulted in airlines dramatically cutting back on flights and a decrease in motor vehicle use. As a result, there has also been a decline in the demand for, and thus also the market prices of, crude oil and certain products, particularly refined petroleum products that we receive revenue for the transportation and storage services we provide. In addition, the decline in demand impacted the sales volumes in our wholesale marketing business. As of December 31, 2020, there is continued uncertainty about the duration and future impact of the COVID-19 Pandemic. Therefore, downward pressure on commodity prices has remained and could continue for the foreseeable future. Uncertainties related to the impact of the COVID-19 Pandemic and other events exist that could impact our future results of operations and financial position, the nature of which and the extent to which are currently unknown. To the extent these uncertainties have been identified and are believed to have an impact on our current period results of operations or financial position based on the requirements for assessing such financial statement impact under GAAP, we have considered them in the preparation of our financial statements as of and for the year ended December 31, 2020. The application of accounting policies impacted by such considerations include (but are not necessarily limited to) the following: • The evaluation of indefinite-lived intangibles and goodwill for potential impairment, during our annual assessment or where indicators exist, as defined by GAAP; • The evaluation of long-lived assets for potential impairment, where indicators exist, as defined by GAAP; • The evaluation of joint ventures for potential impairment, where indicators exist, as defined by GAAP; • The evaluation of inventory valuation allowances that may be warranted under the lower of cost or net realizable value analysis, pursuant to GAAP; • The consideration of debt modifications and or covenant requirements, as applicable; • The evaluation of commitments and contingencies, including changes in concentrations, as applicable; • The evaluation of the risk of credit losses and the determination of our allowance for credit losses, pursuant to GAAP; and • The evaluation of our ability to continue as a going concern. Segment Reporting We are an energy business focused on crude oil, intermediate and refined products pipeline and storage activities and wholesale marketing, terminalling and offloading activities. Management reviews operating results in two reportable segments: (i) pipelines and transportation and (ii) wholesale marketing and terminalling. • The assets and investments reported in the pipeline and transportation segment provide crude oil gathering and crude oil, intermediate and refined products transportation and storage services to Delek Holdings' refining operations and independent third parties. • The wholesale marketing and terminalling segment provides marketing services for the refined products output of the Delek Holdings' refineries, engages in wholesale activity at our terminals and terminals owned by third parties, whereby we purchase light product for sale and exchange to third parties, and provides terminalling services at our refined products terminals to independent third parties and Delek Holdings. Decisions concerning the allocation of resources and assessment of operating performance are made based on this segmentation. Management measures the operating performance of each of its reportable segments based on the segment contribution margin. Segment contribution margin is defined as net revenues less cost of materials and other and operating expenses, excluding depreciation and amortization. Segment reporting is more fully discussed in Note 15. Cash and Cash Equivalents We maintain cash and cash equivalents in accounts with large, U.S. financial institutions. Any highly liquid investments purchased with an original maturity of three months or less are considered to be cash equivalents. Accounts Receivable Accounts receivable primarily consists of trade receivables generated in the ordinary course of business. We perform on-going credit evaluations of our customers and generally do not require collateral on accounts receivable. All accounts receivable amounts are considered to be fully collectible. Accordingly, no allowance for doubtful accounts has been established as of December 31, 2020 and 2019. One third-party customer accounted for approximately 49.9% and 52.5% of the consolidated accounts receivable balance as of December 31, 2020 and December 31, 2019, respectively. Inventory Inventory consists of refined products, which are stated at the lower of cost or net realizable value, with cost determined on a first-in, first-out ("FIFO") basis. Delek Holdings accounted for approximately 91.8% and 78.1% of our inventory purchases in our wholesale marketing and terminalling segment during the year ended December 31, 2020 and December 31, 2019, respectively. Property, Plant and Equipment Assets acquired in conjunction with business acquisitions are recorded at estimated fair market value in accordance with the purchase method of accounting as prescribed in Accounting Standards Codification ("ASC") 805, Business Combinations ("ASC 805"). Other acquisitions of property and equipment are carried at cost. Acquisitions of net assets that do not constitute a business are accounted for by allocating the cost of the acquisition to individual assets acquired and liabilities assumed on a relative fair value basis and shall not give rise to goodwill as prescribed in ASC 805. Betterments, renewals and extraordinary repairs that extend the life of an asset are capitalized. Maintenance and repairs are charged to expense as incurred. Depreciation is computed using the straight-line method over management’s estimated useful lives of the related assets. The estimated useful lives are as follows: Years Buildings and building improvements 15-40 Pipelines, tanks and terminals 15-40 Asset retirement obligation assets 15-50 Other equipment 3-15 Intangible Assets Intangible assets consist of indefinite-lived rights of way and a marketing contract intangible. The marketing contract intangible is amortized on a straight-line basis over a 20 year period as a component of net revenues from affiliates. Acquired intangible assets determined to have an indefinite useful life are not amortized, but are tested for impairment in connection with our evaluation of long-lived assets as events and circumnstances indicate that the assets might be impaired. Property, Plant and Equipment and Intangibles Impairment Property, plant and equipment and intangibles are evaluated for impairment whenever indicators of impairment exist. In accordance with ASC 360, Property, Plant and Equipment and ASC 350, Intangibles - Goodwill and Other , we evaluate the realizability of these long-lived assets as events occur that might indicate potential impairment. In doing so, we assess whether the carrying amount of the asset is recoverable by estimating the sum of the future cash flows expected to result from the use of the asset, undiscounted and without interest charges. If the carrying amount is more than the recoverable amount, an impairment charge must be recognized based on the fair value of the asset. Goodwill and Potential Impairment Goodwill in an acquisition represents the excess of the aggregate purchase price over the fair value of the identifiable net assets. Goodwill is reviewed at least annually during the fourth quarter for impairment, or more frequently if indicators of impairment exist, such as disruptions in our business, unexpected significant declines in operating results or a sustained market capitalization decline. Goodwill is evaluated for impairment by comparing the carrying amount of the reporting unit to its estimated fair value. The Company adopted ASU 2017-04, Goodwill and Other (Topic 350); Simplifying the Test for Goodwill Impairment , during the fourth quarter of 2018. In accordance with this guidance, a goodwill impairment charge is recognized for the amount that the carrying amount of a reporting unit, including goodwill, exceeds its fair value, limited to the total amount of goodwill allocated to that reporting unit. In assessing the recoverability of goodwill, assumptions are made with respect to future business conditions and estimated expected future cash flows to determine the fair value of a reporting unit. We elected to perform a qualitative assessment for purposes of our annual goodwill impairment test during the fourth quarter in 2020, 2019 and 2018. Our annual assessment of goodwill did not result in an impairment charge during the years ended December 31, 2020, 2019 or 2018. Details of goodwill balances by segment are included in Note 9. Equity Method Investments For equity investments that are not required to be consolidated under the variable or voting interest model, we evaluate the level of influence we are able to exercise over an entity’s operations to determine whether to use the equity method of accounting. Our judgment regarding the level of influence over an equity method investment includes considering key factors such as our ownership interest, participation in policy-making and other significant decisions and material intercompany transactions. Equity investments for which we determine we have significant influence are accounted for as equity method investments. Amounts recognized for equity method investments are included in equity method investments in our consolidated balance sheets and adjusted for our share of the net earnings and losses of the investee, dividends received and cash distributions from the investee, which are separately stated in our consolidated statements of income and comprehensive income and our consolidated statements of cash flows. We evaluate our equity method investments presented for impairment whenever events or changes in circumstances indicate that the carrying amounts of such investments may be impaired. A loss is recorded in earnings in the current period if a decline in the value of an equity method investment is determined to be other than temporary. See Note 14 for further information on our equity method investments. Fair Value of Financial Instruments The fair values of financial instruments are estimated based upon current market conditions and quoted market prices for the same or similar instruments. Management estimates that the carrying value approximates fair value for all of our assets and liabilities that fall under the scope of ASC 825, Financial Instruments ("ASC 825"). Self-Insurance Reserves We have no employees. Rather, we are managed by the directors and officers of our general partner. However, Delek Holdings employees providing services to the Partnership are covered under Delek Holdings’ insurance programs. Delek Holdings has workers' compensation and liability insurance with varying retentions and deductibles with limits that management considers adequate. Environmental Expenditures It is our policy to accrue environmental and clean-up related costs of a non-capital nature when it is both probable that a liability has been incurred and the amount can be reasonably estimated. Environmental liabilities represent the current estimated costs to investigate and remediate contamination at sites where we have environmental exposure. This estimate is based on assessments of the extent of the contamination, the selected remediation technology and review of applicable environmental regulations, typically considering estimated activities and costs for 15 years, and up to 30 years if a longer period is believed reasonably necessary. Such estimates may require judgment with respect to costs, time frame and extent of required remedial and clean-up activities. Accruals for estimated costs from environmental remediation obligations generally are recognized no later than completion of the remedial feasibility study and include, but are not limited to, costs to perform remedial actions and costs of machinery and equipment that are dedicated to the remedial actions and that do not have an alternative use. Such accruals are adjusted as further information develops or circumstances change. We discount environmental liabilities to their present value if payments are fixed or reliably determinable. Expenditures for equipment necessary for environmental issues relating to ongoing operations are capitalized. Estimated recoveries of costs from other parties are recorded on an undiscounted basis as assets when their realization is deemed probable. See Note 17 for further information on crude oil releases impacting our properties and related accruals. Asset Retirement Obligations We recognize liabilities which represent the fair value of a legal obligation to perform asset retirement activities, including those that are conditional on a future event, when the amount can be reasonably estimated. These obligations are related to the required cleanout of our pipelines and terminal tanks and removal of certain above-grade portions of our pipelines situated on right-of-way property. The reconciliation of the beginning and ending carrying amounts of asset retirement obligations as of December 31, 2020 and 2019 is as follows (in thousands): December 31, 2020 2019 Beginning balance $ 5,588 $ 5,191 Accretion expense 427 397 Ending balance $ 6,015 $ 5,588 In order to determine fair value, management must make certain estimates and assumptions including, among other things, projected cash flows, a credit-adjusted risk-free rate and an assessment of market conditions that could significantly impact the estimated fair value of the asset retirement obligation. Revenue Recognition Revenue is measured based on consideration specified in a contract with a customer. The Partnership recognizes revenue when it satisfies a performance obligation by transferring control over a product or by providing services to a customer. Service, Product and Lease Revenues. Revenues for products sold are generally recognized upon delivery of product, which is when title and control of the product is transferred. Transaction prices for these products are typically at market rates for the product at the time of delivery. Service revenues are recognized as crude oil, intermediate and refined products are shipped through, delivered by or stored in our pipelines, trucks, terminals and storage facility assets, as applicable. We do not recognize product revenues for these services, as the product does not represent a promised good in the context of ASC 606, Revenue from Contracts with Customers ("ASC 606"). All service revenues are based on regulated tariff rates or contractual rates. Payment terms require customers to pay shortly after delivery and do not contain significant financing components. Certain agreements for gathering, transportation, storage, terminalling, and offloading with Delek Holdings were considered operating leases under ASC 840, Leases ("ASC 840"). As part of the adoption of ASC 842, we applied the permitted practical expedient to not separate lease and non-lease components under the predominance principle to designated asset classes associated with the provision of logistics services. We have determined that the predominant component of the related agreements currently in effect is the lease component. Therefore, the combined component is accounted for under the applicable lease accounting guidance. Refer to Note 5 for further information. Up-Front payments to Customers. We record up-front payments to customers in accordance with ASC 606. We evaluate the nature of each payment, the rights and obligations under the related contract, and whether the payment meets the definition of an asset. When an asset is recognized for an up-front payment to a customer, the asset is amortized, as a reduction of revenue, in a manner that reflects the pattern and period over which the asset is expected to provide benefit. Revenues Related to Reimbursements. In addition to the agreements noted above, we have cost reimbursement provisions in certain of our agreements with Delek Holdings that provide for reimbursement to the Company for certain costs, including certain capital expenditures. Such reimbursements are recorded in other long-term liabilities and are amortized to revenue over the life of the underlying revenue agreement corresponding to the asset. Cost of Materials and Other and Operating Expenses Cost of materials and other includes (i) all costs of purchased refined products, additives and related transportation of such products, (ii) costs associated with the operation of our trucking assets, which primarily include allocated employee costs and other costs related to fuel, truck leases and repairs and maintenance, (iii) the cost of pipeline capacity leased from a third-party, and (iv) gains and losses related to our commodity hedging activities. Operating expenses include the costs associated with the operation of owned terminals and pipelines and terminalling expense at third-party locations, excluding depreciation and amortization. These costs primarily include outside services, allocated employee costs, repairs and maintenance costs and energy and utility costs. Operating expenses related to the wholesale business are excluded from cost of sales because they primarily relate to costs associated with selling the products through our wholesale business. Depreciation and amortization is separately presented in our consolidated statement of income and disclosed by reportable segment in Note 15. Deferred Financing Costs Deferred financing costs are included in other non-current assets in the accompanying consolidated balance sheets and represent expenses related to issuing and amending our revolving credit facility. Deferred financing costs associated with our 6.750% Senior Notes are included as a reduction to the associated debt balance in the accompanying consolidated balance sheets. These costs represent expenses related to issuing the senior notes. These amounts are amortized ratably over the remaining term of the respective financing and are included in interest expense in the accompanying consolidated statements of income and comprehensive income. Leases In accordance with ASC 842-20, Leases - Lessee ("ASC 842-20"), we classify leases with contractual terms longer than twelve months as either operating or finance. Finance leases are generally those leases that are highly specialized or allow us to substantially utilize or pay for the entire asset over its useful life. All other leases are classified as operating leases. We lease primarily transportation equipment. Our leases do not have any outstanding renewal options. Certain leases also include options to purchase the leased equipment. Certain of our lease agreements include rates based on equipment usage. Our lease agreements do not contain any material residual value guarantees or material restrictive covenants. For all leases that include fixed rental rate increases, these are included in our fixed lease payments. Our leases may include variable payments, based on changes on price or other indices, that are expensed as incurred. We calculate the total lease expense for the entire noncancelable lease period, considering renewals for all periods for which it is reasonably certain to be exercised, and record lease expense on a straight-line basis in the accompanying consolidated statements of income. Accordingly, a lease liability is recognized for these leases and is calculated to be the present value of the fixed lease payments, as defined by ASC 842-20, using a discount rate based on our incremental borrowing rate. A corresponding right-of-use asset is recognized based on the lease liability and adjusted for certain costs and prepayments. Income Taxes We are not a taxable entity for federal income tax purposes or the income taxes of those states that follow the federal income tax treatment of partnerships. Instead, for purposes of these income taxes, each partner of the Partnership is required to take into account its share of items of income, gain, loss and deduction in computing its federal and state income tax liabilities, regardless of whether cash distributions are made to such partner by the Partnership. The taxable income reportable to each partner takes into account differences between the tax basis and fair market value of our assets and financial reporting bases of assets and liabilities, the acquisition price of such partner's units and the taxable income allocation requirements under the Partnership's Second Amended and Restated Agreement of Limited Partnership, as amended (the "Partnership Agreement"). We are subject to income taxes in certain states that do not follow the federal tax treatment of Partnerships. These taxes are accounted for under the provisions of ASC 740, Income Taxes ("ASC 740"). This statement generally requires the Partnership to record deferred income taxes for the differences between the book and tax bases of its assets and liabilities, which are measured using enacted tax rates and laws that will be in effect when the differences are expected to reverse. Deferred income tax expense or benefit represents the net change during the year in our deferred income tax assets and liabilities, exclusive of the amounts held in other comprehensive income. U.S. GAAP requires management to evaluate uncertain tax positions taken by the Partnership. The financial statement effects of a tax position are recognized when the position is more likely than not, based on the technical merits, to be sustained upon examination by the Internal Revenue Service. Management has analyzed the tax positions taken by the Partnership, and has concluded that there are no uncertain positions taken or expected to be taken. The Partnership is subject to routine audits by taxing jurisdictions. Equity Based Compensation Our general partner provides equity-based compensation to officers, directors and employees of our general partner or its affiliates, and certain consultants, affiliates of our general partner or other individuals who perform services for us, which may include unit options, restricted units, phantom units, unit appreciation rights, distribution equivalent rights, other unit-based awards and unit awards. The fair value of our phantom units is determined based on the closing market price of our common units on the grant date. The estimated fair value of our phantom units is amortized over the vesting period using the straight line method. Awards vest over one five Net Income per Limited Partner Unit Basic net income per unit applicable to limited partners is computed by dividing limited partners’ interest in net income by the weighted-average number of outstanding common units. Prior to August 13, 2020, we had more than one class of participating securities and used the two class method to calculate the net income per unit applicable to the limited partners. The classes of participating units prior to August 13, 2020 consisted of limited partner units, general partner units and IDRs. Pursuant to the IDR Restructuring Transaction, the IDRs were eliminated and the 2.0% general partner economic interest was converted to a non-economic general partner interest. Effective August 13, 2020, the common limited partner units are the only participating security for cash distributions. Refer to Notes 6 and 12 for further discussion. Diluted net income per unit applicable to common limited partners includes the effects of potentially dilutive units on our common units. As of December 31, 2020, the only potentially dilutive units outstanding consist of unvested phantom units. Comprehensive Income Comprehensive income for the years ended December 31, 2020, 2019 and 2018 was equivalent to net income. Sales, Use and Excise Taxes The Partnership's policy is to exclude from revenue all taxes assessed by a governmental authority, including sales, use and excise taxes, that are both imposed on and concurrent with a specific revenue-producing transaction and collected on behalf of a customer. New Accounting Pronouncements Adopted During 2020 ASU 2018-13, Fair Value Measurement - Changes to the Disclosure Requirements for Fair Value Measurement In August 2018, the Financial Accounting Standards Board (the "FASB") issued guidance related to disclosure requirements for fair value measurements. The pronouncement eliminates, modifies and adds disclosure requirements for fair value measurements. The pronouncement is effective for fiscal years, and for interim periods within those fiscal years, beginning after December 15, 2019. We adopted this guidance on January 1, 2020 and the adoption did not have a material impact on our business, financial condition or results of operations. ASU 2016-13, Financial Instruments - Measurement of Credit Losses on Financial Instruments In June 2016, the FASB issued guidance requiring the measurement of all expected credit losses for financial assets held at the reporting date based on historical experience, current conditions, and reasonable and supportable forecasts. Organizations will now use forward-looking information to better inform their credit loss estimates. This guidance is effective for interim and annual periods beginning after December 15, 2019. We adopted this guidance on January 1, 2020 using the modified retrospective approach as of the adoption date. The adoption did not have a material impact on the Partnership’s operating results, financial position or disclosures. ASU 2018-15, Intangible - Customer's Accounting for Implementation Costs Incurred in a Cloud Computing Arrangement That Is a Service Contract In August 2018, the FASB issued guidance related to customers' accounting for implementation costs incurred in a cloud computing arrangement that is considered a service contract. This pronouncement aligns the requirements for capitalizing implementation costs in such arrangements with the requirements for capitalizing implementation costs incurred to develop or obtain internal-use software. This pronouncement is effective for fiscal years, and for interim periods within those fiscal years, beginning after December 15, 2019. Entities can choose to adopt the new guidance prospectively or retrospectively. We adopted this guidance on January 1, 2020 and elected the prospective method. The adoption did not have a material impact on the Partnership's financial condition or results of operations. New Accounting Pronouncements Not Yet Adopted ASU 2019-12, Simplifying the Accounting for Income Taxes In December 2019, the FASB issued guidance which is intended to simplify various aspects related to accounting for income taxes, eliminate certain exceptions within Accounting Standard Codification ("ASC") 740 and clarify certain aspects of the current guidance to promote consistency among reporting entities. The pronouncement is effective for fiscal years, and for interim periods within those fiscal years, beginning after December 15, 2020. We expect to adopt this guidance on the effective date and do not expect adopting this new guidance will have a material impact on our business, financial condition and results of operations. ASU 2020-01, Investments—Equity Securities (Topic 321), Investments—Equity Method and Joint Ventures (Topic 323), and Derivatives and Hedging (Topic 815)—Clarifying the Interactions between Topic 321, Topic 323, and Topic 815 In January 2020, the FASB issued ASU 2020-01 which is intended to clarify interactions between the guidance to account for certain equity securities under Topics 321, 323 and 815, and improve current GAAP by reducing diversity in practice and increasing comparability of accounting. The pronouncement is effective for fiscal years and interim periods within those fiscal years beginning after December 15, 2020. We expect to adopt this guidance on the effective date and do not expect adopting this new guidance will have a material impact on our business, financial condition and results of operations. ASU 2020-04, Facilitation of the Effects of Reference Rate Reform on Financial Reporting (Topic 848) In March 2020, the FASB issued an amendment which is intended to provide temporary optional expedients and exceptions to GAAP guidance on contracts, hedge accounting and other transactions affected by the expected market transition from the London Interbank Offered Rate (LIBOR) and other interbank rates. This guidance is effective for all entities any time beginning on March 12, 2020 through December 31, 2022 and may be applied from the beginning of an interim period that includes the issuance date of the ASU. The Partnership is currently evaluating the impact this guidance may have on its consolidated financial statements and related disclosures.

Acquisitions Acquisitions

Acquisitions Acquisitions	12 Months Ended
	Dec. 31, 2020
Business Combinations [Abstract]
Acquisitions	Acquisitions Trucking Assets Acquisition Effective May 1, 2020, the Partnership, through its wholly-owned subsidiary DKL Transportation, LLC, acquired Delek Trucking, LLC consisting of certain leased and owned tractors and trailers and related assets from Delek Holdings. The total consideration was approximately $48.0 million in cash. We financed this acquisition with a combination of cash on hand and borrowings under the DKL Credit Facility (as defined in Note 7). The Trucking Assets are recorded in our pipelines and transportation segment and include approximately 150 trucks and trailers, which are primarily leased or owned, respectively. In connection with the closing of the transaction, Delek Holdings, the Partnership and various of their respective subsidiaries entered into a Transportation Services Agreement (the “Trucking Assets TSA Agreement”). Under the Trucking Assets TSA Agreement, the Partnership will gather, coordinate pickup of, transport and deliver petroleum products for Delek Holdings, as well as provide ancillary services as requested. The transaction and related agreements were approved by the Conflicts Committee of the Partnership's general partner, which is comprised solely of independent directors. See Note 3 for more detailed descriptions of these agreements. The Trucking Assets Acquisition was considered a transaction between entities under common control. Accordingly, the Trucking Assets were recorded at amounts based on Delek Holdings' historical carrying value as of the acquisition date. The carrying value of the Trucking Assets as of the acquisition date was $13.3 million, consisting of $0.5 million of owned assets and $12.8 million Right of Use asset for leased assets. The Right of Use asset offsets with an equivalent operating lease liability. Prior periods have not been recast as these assets do not constitute a business in accordance with Accounting Standard Update 2017-01, Clarifying the Definition of a Business ("ASU 2017-01"). We capitalized approximately $0.3 million of acquisition costs related to the Trucking Assets Acquisition. Big Spring Gathering Assets Acquisition Effective March 31, 2020, the Partnership, through its wholly-owned subsidiary DKL Permian Gathering, LLC, acquired the Big Spring Gathering Assets from Delek Holdings, located in Howard, Borden and Martin Counties, Texas. The total consideration was subject to certain post-closing adjustments and was comprised of $100.0 million in cash and 5.0 million of our common limited partner units (the "Additional Units"). We financed the cash component of this acquisition with borrowings from the DKL Credit Facility. The Big Spring Gathering Assets are recorded in our pipelines and transportation segment and include: • Crude oil pipelines; • Approximately 200 miles of gathering systems; • Approximately 65 Tank battery connections; • Terminals (total storage of approximately 650,000 bbls); and • Applicable rights-of-way. In connection with the closing of the transaction, Delek Holdings, the Partnership and various of their respective subsidiaries entered into a Throughput and Deficiency Agreement (the “Big Spring T&D Agreement”). Under the Big Spring T&D Agreement, the Partnership will operate and maintain the Big Spring Gathering Assets connecting Delek Holdings' interests in and to certain crude oil with the Partnership's Big Spring, Texas terminal and provide gathering, transportation and other related services with respect to any and all crude produced from shipper’s and certain other producers’ respective interests for delivery at the Big Spring Terminal. The transaction and related agreements were approved by the Conflicts Committee of the Partnership's general partner, which is comprised solely of independent directors. See Note 3 for more detailed descriptions of these agreements. The Big Spring Gathering Assets Acquisition was considered a transaction between entities under common control. Accordingly, the Big Spring Gathering Assets were recorded at amounts based on Delek Holdings' historical carrying value as of the acquisition date. The carrying value of the Big Spring Gathering Assets as of the acquisition date was $209.5 million. Pursuant to the common control guidance, the 5.0 million units issued (which had a closing market price of $9.10 per unit on the transaction date) were recorded in equity at $109.5 million, representing the net carrying value of the Big Spring Gathering Assets purchased of $209.5 million less the $100.0 million cash consideration. Prior periods have not been recast as these assets do not constitute a business in accordance with ASU 2017-01. We capitalized approximately $0.7 million of acquisition costs related to the Big Spring Gathering Assets Acquisition. Big Spring Logistics Assets Acquisition Effective March 1, 2018, the Partnership, through its wholly-owned subsidiary DKL Big Spring, LLC, acquired the Big Spring Logistics Assets from Delek Holdings, which are primarily located at or adjacent to the Big Spring Refinery. The total purchase price was $170.8 million, financed through borrowings under the Partnership’s revolving credit facility. The Big Spring Logistics Assets include (i) approximately 70 storage tanks and certain ancillary assets (such as tank pumps and piping) primarily located adjacent to the Big Spring Refinery, (ii) an asphalt terminal and a light products terminal, (iii) certain crude oil and refined product pipelines and (iv) other logistics assets, such as 4 underground saltwells used for natural gas liquids storage. In connection with the closing of the transaction, Delek Holdings, the Partnership and various of their respective subsidiaries entered into and amended certain existing contracts, including entering into new pipelines, storage and throughput facilities and asphalt services agreements. The transaction and related agreements were approved by the Conflicts Committee of the Partnership's general partner, which is comprised solely of independent directors. See Note 4 for more detailed descriptions of these agreements. The Big Spring Logistics Assets Acquisition was considered a transaction between entities under common control. Accordingly, the Big Spring Logistics Assets were recorded at amounts based on Delek Holdings' historical carrying value as of the acquisition date. The excess of the cash paid over the historical carrying value of the assets acquired from Delek Holdings amounted to $98.8 million and was recorded as a reduction in equity. The historical carrying value of the Big Spring Logistics Assets as of the acquisition date was $72.0 million, which is net of $0.8 million of assumed asset retirement obligations. Prior periods have not been recast, as these assets did not constitute a business in accordance with ASU 2017-01. We capitalized approximately $0.4 million of acquisition costs related to the Big Spring Logistics Assets Acquisition. Marketing Contract Intangible Acquisition twenty

Related Party Transactions

Related Party Transactions	12 Months Ended
	Dec. 31, 2020
Related Party Transactions [Abstract]
Related Party Transactions	Related Party Transactions Commercial Agreements The Partnership has a number of long-term, fee-based commercial agreements with Delek Holdings under which we provide various services, including crude oil gathering and crude oil, intermediate and refined products transportation and storage services, and marketing, terminalling and offloading services to Delek Holdings. Most of these agreements have an initial term ranging from five Under each of these agreements, we are required to maintain the capabilities of our pipelines and terminals, such that Delek Holdings may throughput and/or store, as the case may be, specified volumes of crude oil, intermediate and refined products. To the extent that Delek Holdings is prevented by our failure to maintain such capacities from throughputting or storing such specified volumes for more than 30 days per year, Delek Holdings' minimum throughput commitment will be reduced proportionately and prorated for the portion of the quarter during which the specified throughput capacity was unavailable, and/or the storage fee will be reduced, prorated for the portion of the month during which the specified storage capacity was unavailable. Such reduction would occur even if actual throughput or storage amounts were below the minimum volume commitment levels. Our material commercial agreements with Delek Holdings include the following: Asset/Operation Initiation Date Initial/Maximum Term (years) (1) Service Minimum Throughput Commitment (bpd) Fee (/bbl) El Dorado Assets and El Dorado Gathering System (2) : Crude Oil Pipelines (non-gathered) November 2012 5 / 15 Crude oil and refined products transportation 46,000 (3) $1.05 (4) Refined Products Pipelines November 2012 5 / 15 40,000 $0.12 El Dorado Gathering System November 2012 5 / 15 Crude oil gathering 14,000 $2.83 (4) East Texas Crude Logistics System (2) : Crude Oil Pipelines November 2012 5 / 15 Crude oil transportation and storage 35,000 $0.50 (5) Storage November 2012 5 / 15 N/A $309,892/month East Texas Marketing November 2012 10 (6) Marketing products for Tyler Refinery 50,000 $0.82 (6) Big Sandy Terminal: (2) Refined Products Transportation November 2012 5 / 15 Refined products transportation, dedicated terminalling services and storage for the Tyler Refinery 5,000 $0.62 Terminalling November 2012 5 / 15 5,000 $0.62 Storage November 2012 5 / 15 N/A $61,923/month Tyler Throughput and Tankage (2) : Refined Products Throughput July 2013 8 / 16 Dedicated Terminalling and storage 50,000 $0.38 Storage July 2013 8 / 16 N/A $894,648/month Memphis Pipeline June 1, 2018 5 Refined Products Transportation 11,000 $1.28 El Dorado Throughput and Tankage (2) : Refined Products Throughput February 2014 8 / 16 Dedicated terminalling and storage 11,000 $0.54 Storage February 2014 8 / 16 N/A $1,400,478/month El Dorado Assets Throughput: Light Crude Throughput March 2015 9 / 15 Dedicated Offloading Services N/A (7) $1.08 Heavy Crude Throughput March 2015 9 / 15 Dedicated Offloading Services N/A (7) $2.43 Pipelines, Storage and Throughput Facilities Agreement (Big Spring Logistics Assets): Crude Oil and Refined Products Throughput March 1, 2018 10 / 15 Pipeline throughput 104,300 $0.05 Rail Offloading March 1, 2018 10 / 15 Offloading services 4,500 $0.41 Terminalling March 1, 2018 10 / 15 Dedicated Terminalling 29,250 $0.68 Storage March 1, 2018 10 / 15 Storage NA $1,411,406/month Asphalt Services Agreement (Big Spring Logistics Assets): Terminalling March 1, 2018 10 / 15 Dedicated Asphalt Terminalling and Storage 1,020 to 2,380 based on seasonality $8.52 Storage March 1, 2018 10 / 15 N/A $468,703/month Marketing Agreement (Big Spring Logistics Assets): Marketing Services March 1, 2018 10 / 15 Dedicated Marketing and Selling 65,000 $0.51 - $0.73 Throughput and Deficiency Agreement (Big Spring Gathering Assets) Gathering System March 31, 2020 10 / 20 Gathering and Transportation Services 120,000 $0.70 Re-delivery System March 30, 2020 10 / 20 50,000 $0.25 Pipelines, Throughput and Offloading Facilities Agreement (Big Spring Logistics Assets) Fintex / Magellen Pipeline April 1, 2020 2 Refined Products 20,000 $0.63 Crude Oil Offloading January 1, 2020 2 Crude Oil Offloading 15,120 $0.90 Storage April 1, 2020 2 Storage N/A $240,000/month LPG Rack January 1, 2020 2 Truck Unloading Facility 4,500 $5.00 Transportation Services Agreement Trucking Services May 1, 2020 10 / 14 Transportation Services N/A $39,000,000/Minimum Annual Revenue Commitment (1) Maximum term gives effect to the extension of the commercial agreement pursuant to the terms thereof. (2) The current term of the agreement was extended through March 31, 2024 in connection with the amendment and restatement of the DKL Credit Facility (as defined in Note 11). While the current terms of the agreement were extended, the upcoming renewal terms were reduced. Therefore, the overall duration of the maximum term remains unchanged. (3) Excludes volumes gathered on the El Dorado Gathering System (the "El Dorado Gathering System"). (4) Volumes gathered on the El Dorado Gathering System will not be subject to an additional fee for transportation on our El Dorado Assets (the "El Dorado Assets") to the El Dorado Refinery. (5) For any volumes in excess of 50,000 bpd, the throughput fee will be $0.74/bbl. (6) For any volumes in excess of 50,000 bpd, the throughput fee will be $0.78/bbl. Following the primary term, the marketing agreement automatically renews for a successive one-year term, unless either party provides notice of non-renewal 10 months prior to the expiration of the then-current term. The initial primary term for the marketing agreement has been extended through 2027. (7) The throughput agreement provides for a minimum throughput fee of $1.6 million per quarter for throughput of a combination of light and heavy crude. Pursuant to financing arrangements between Delek Holdings and its subsidiaries, Lion Oil Company, LLC, Lion Oil Trading & Transportation, LLC and Alon USA LP, (all hereinafter referred to together as "Delek Holdings"), to which we are not a party, and J. Aron & Company ("J. Aron"), Delek Holdings assigned to J. Aron certain of its rights under our specific terminalling agreements, pipelines, storage and throughput facilities agreements, and asphalt services agreements. Accordingly, even though this is effectively a financing arrangement for Delek Holdings whereby J. Aron sells the product back to Delek Holdings, J. Aron is technically our primary customer under each of these agreements. J. Aron retains these storage and transportation rights for the term of the financing arrangement, which currently runs through December 30, 2022, with J. Aron having the sole discretion to further extend to May 30, 2025, by giving at least six months prior notice to the maturity date. J. Aron pays us for the transportation, throughput and storage services we provide to it. The rights assigned to J. Aron do not alter the obligations of Delek Holding to meet certain throughput minimum volumes under our agreements with respect to the transportation, gathering and storage of crude oil, intermediate and refined products through our facilities, but J. Aron's throughput is credited toward minimum throughput commitments of Delek Holdings. Accordingly, Delek Holdings is responsible for making any shortfall payments incurred under the pipelines and storage agreement or the terminalling agreement which may result from minimum throughputs or volumes not being met. Other Agreements with Delek Holdings In addition to the commercial agreements described above, the Partnership has entered into the following agreements with Delek Holdings: Omnibus Agreement The Partnership entered into an omnibus agreement with Delek Holdings, our general partner, Delek Logistics Operating, LLC, Lion Oil Company, LLC and certain of the Partnership’s and Delek Holdings' other subsidiaries on November 7, 2012, which has been amended from time to time in connection with acquisitions from Delek Holdings (collectively, as amended, the "Omnibus Agreement"). The Omnibus Agreement governs the provision of certain operational services and reimbursement obligations, among other matters, between the Partnership and Delek Holdings, and obligates us to pay an annual fee of $4.7 million to Delek Holdings for its provision of centralized corporate services to the Partnership. Pursuant to the terms of the Omnibus Agreement, we were reimbursed by Delek Holdings for certain capital expenditures in the amount of $0.6 million, $3.7 million and $5.0 million during the years ended December 31, 2020, 2019 and 2018, respectively. These amounts are recorded in other long-term liabilities and are amortized to revenue over the life of the underlying revenue agreement corresponding to the asset. Additionally, we are reimbursed or indemnified, as the case may be, for costs incurred in excess of certain amounts related to certain asset failures, pursuant to the terms of the Omnibus Agreement. As of December 31, 2020 and 2019, we have recorded a nominal receivable from related parties for these matters for which we expect to be reimbursed. These reimbursements are recorded as reductions to operating expenses. We were reimbursed $0.1 million, $6.3 million and $8.2 million for these matters during the year ended December 31, 2020, 2019 and 2018, respectively. Other Agreements Our general partner operates our business on our behalf and is entitled under our Partnership Agreement to be reimbursed for the cost of providing those services, which include certain labor related costs. We and our subsidiaries paid Delek Holdings approximately $29.4 million, $25.0 million and $21.1 million pursuant to the Partnership Agreement during the years ended December 31, 2020, 2019 and 2018, respectively. These amounts are included in operating expenses in the accompanying consolidated statements of income and comprehensive income. Other Transactions The Partnership manages a long-term capital project on behalf of Delek Holdings pursuant to a construction management and operating agreement (the "DPG Management Agreement") for the construction of a 250-mile gathering system in the Permian Basin. The majority of the gathering system has been constructed, however, additional costs pertaining to a pipeline connection that was not acquired by the Partnership continue to be incurred and are still subject to the terms of the DPG Management Agreement. The Partnership is also considered the operator for the project and is responsible for oversight of the project design, procurement and construction of project segments and provides other related services. Pursuant to the terms of the DPG Management Agreement, the Partnership receives a monthly operating services fee and a construction services fee, which includes the Partnership's direct costs of managing the project plus an additional percentage fee of the construction costs of each project segment. The agreement extends through December 2022. Total fees paid to the Partnership were $2.0 million and $6.1 million for the years ended December 31, 2020 and 2019, respectively, which are recorded in affiliate revenue in our consolidated statements of income. Additionally, the Partnership incurs the costs in connection with the construction of the assets and is subsequently reimbursed by Delek Holdings. Amounts reimbursable by Delek Holdings are recorded in accounts receivable from related parties. Unregistered Sale of Equity Securities In connection with the Partnership's issuance of the common limited partner units under the Big Spring Gathering Assets Acquisition and in accordance with the Partnership's First Amended and Restated Agreement of Limited Partnership, as amended (the "Partnership Agreement"), the Partnership issued general partner units to the general partner in an amount necessary to maintain its 2% general partner interest as defined in the Partnership Agreement. The sale and issuance of the Additional Units and such general partner units in connection with the Big Spring Gathering Assets Acquisition is exempt from registration under Section 4(a)(2) of the Securities Act of 1933, as amended. Additionally, in March 2020, Delek Marketing & Supply, LLC ("Delek Marketing") repurchased 451,822 common limited partner units from an unaffiliated investor pursuant to a Common Unit Purchase Agreement between Delek Marketing and such investor. The purchase price of the units amounted to approximately $5.0 million. As a result of the transaction, Delek Holdings' ownership in our common limited partner units increased to 64.5% from 62.6%. Delek Holdings' ownership in our common limited partner units was further increased to 70.5% as a result of the issuance of 5.0 million Additional Units in connection with the Big Spring Gathering Assets Acquisition described above. In August 2020, Delek Holdings ownership in our common limited partner units was further increased to approximately 80.0% in connection with the IDR Restructuring Transaction, when the Partnership issued 14.0 million of the Partnership's newly issued common limited partner units to Delek Holdings. Amendment No. 2 to the First Amended and Restated Agreement of Limited Partnership of Delek Logistics Partners, LP On March 31, 2020, in connection with the completion of the Big Spring Gathering Assets Acquisition, the Board of the general partner adopted Amendment No. 2 (“Amendment No. 2”) to the Partnership Agreement, effective upon adoption. Amendment No. 2 amended the Partnership Agreement to provide for a waiver of distributions in respect of the Incentive Distribution Rights ("IDRs") for General Partner Additional Units ("GP Additional Units") associated with the 5.0 million Additional Units for at least two years, through at least the distribution for the quarter ending March 31, 2022 ( the “IDR Waiver”). The IDR Waiver essentially reduced the distribution made to the holders of the IDRs during this period, as the holders would not receive a share of the distribution made on the GP Additional Units. Subsequently, the IDRs were eliminated in the IDR Restructuring Transaction on August 13, 2020. Conversion of GP Economic Interest and Elimination of IDRs On August 13, 2020, we closed the transaction contemplated by a definitive exchange agreement with Delek Holdings to eliminate all of the IDRs held by the general partner and convert the 2% general partner economic interest into a non-economic general partner interest, all in exchange for 14.0 million of the Partnership's newly issued common limited partner units and $45.0 million cash. Contemporaneously, Delek Holdings purchased a 5.2% ownership interest in our general partner from certain affiliates who were also members of our general partner's management and board of directors. Delek Holdings now owns 100% interest in the general partner and owns approximately 34.7 million common limited partner units, representing approximately 80% of the Partnership's outstanding common limited partner units. To implement the transaction, our Partnership Agreement was amended and restated. Summary of Transactions Revenues from affiliates consist primarily of revenues from gathering, transportation, storage, offloading, Renewable Identification Numbers, wholesale marketing and products terminalling services provided primarily to Delek Holdings based on regulated tariff rates or contractually based fees and product sales. Affiliate operating expenses are primarily comprised of amounts we reimburse Delek Holdings, or our general partner, as the case may be, for the services provided to us under the Partnership Agreement. These expenses could also include reimbursement and indemnification amounts from Delek Holdings, as provided under the Omnibus Agreement. Additionally, the Partnership is required to reimburse Delek Holdings for direct or allocated costs and expenses incurred by Delek Holdings on behalf of the Partnership and for charges Delek Holdings incurred for the management and operation of our logistics assets, including an annual fee for various centralized corporate services, which are included in general and administrative expenses. In addition to these transactions, we purchase refined products and bulk biofuels from Delek Holdings, the costs of which are included in cost of materials and other. A summary of revenue, purchases from affiliates and expense transactions with Delek Holdings and its affiliates are as follows (in thousands): Year Ended December 31, 2020 2019 2018 Revenues $ 382,666 $ 261,014 $ 240,809 Purchases from Affiliates $ 205,581 $ 285,539 $ 349,089 Operating and maintenance expenses $ 43,985 $ 49,904 $ 36,182 General and administrative expenses $ 12,557 $ 7,977 $ 8,250 Quarterly Cash Distribution

Revenues

Revenues	12 Months Ended
	Dec. 31, 2020
Revenue from Contract with Customer [Abstract]
Revenues	Revenues We generate revenue by charging fees for gathering, transporting, offloading and storing crude oil; for storing intermediate products and feed stocks; for distributing, transporting and storing refined products; for marketing refined products output of Delek Holdings' Tyler and Big Spring refineries; and for wholesale marketing in the West Texas area. A significant portion of our revenue is derived from long-term commercial agreements with Delek Holdings, which provide for annual fee adjustments for increases or decreases in the CPI, PPI or the FERC index (refer to Note 4 for a more detailed description of these agreements). In addition to the services we provide to Delek Holdings, we also generate substantial revenue from crude oil, intermediate and refined products transportation services for, and terminalling and marketing services to, third parties primarily in Texas, New Mexico, Tennessee and Arkansas. Certain of these services are provided pursuant to contractual agreements with third parties. Payment terms require customers to pay shortly after delivery and do not contain significant financing components. Delek Holdings, directly or indirectly, accounted for 67.4%, 44.8% and 36.6% of our total revenues for the years ended December 31, 2020, 2019 and 2018, respectively. Sunoco LP accounted for 5.6%, 14.5% and 15.9% of our total revenues for the years ended December 31, 2020, 2019 and 2018, respectively. The majority of our commercial agreements with Delek Holdings meet the definition of a lease because: (1) performance of the contracts is dependent on specified property, plant or equipment and (2) it is remote that one or more parties other than Delek Holdings will take more than a minor amount of the output associated with the specified property, plant or equipment. As part of our adoption of ASC 842, Leases ("ASC 842"), we applied the permitted practical expedient to not separate lease and non-lease components under the predominance principle to designated asset classes associated with the provision of logistics services. We have determined that the predominant component of the related agreements currently in effect is the lease component. Therefore, the combined component is accounted for under the applicable lease accounting guidance. Of our $464.8 million net property, plant, and equipment balance as of December 31, 2020, $396.8 million is subject to operating leases under our commercial agreements. These agreements do not include options for the lessee to purchase our leased assets, nor do they include any material residual value guarantees or material restrictive covenants. The following table represents a disaggregation of revenue for each reportable segment for the periods indicated (in thousands): Year Ended December 31, 2020 Pipelines and Transportation Wholesale Marketing and Terminalling Consolidated Service Revenue - Third Party $ 17,596 $ 634 $ 18,230 Service Revenue - Affiliate 17,768 33,632 51,400 Product Revenue - Third Party — 162,522 162,522 Product Revenue - Affiliate — 71,178 71,178 Lease Revenue - Affiliate (1) 216,105 43,983 260,088 Total Revenue $ 251,469 $ 311,949 $ 563,418 (1) Net of $7.2 million of amortization expense for the year ended December 31, 2020, related to a customer contract intangible asset recorded in the wholesale marketing and terminalling segment. Year Ended December 31, 2019 Pipelines and Transportation Wholesale Marketing and Terminalling Consolidated Service Revenue - Third Party $ 23,107 $ 623 $ 23,730 Service Revenue - Affiliate — 35,208 35,208 Product Revenue - Third Party — 299,248 299,248 Product Revenue - Affiliate — 31,941 31,941 Lease Revenue - Affiliate (1) 155,211 38,654 193,865 Total Revenue $ 178,318 $ 405,674 $ 583,992 (1) Net of $7.2 million of amortization expense for the year ended December 31, 2019, related to a customer contract intangible asset recorded in the wholesale marketing and terminalling segment. As of December 31, 2020, we expect to recognize approximately $1.5 billion in lease revenues related to our unfulfilled performance obligations pertaining to the minimum volume commitments and capacity utilization under the non-cancelable terms of our commercial agreements with Delek Holdings. Most of these agreements have an initial term ranging from five ten Our unfulfilled performance obligations as of December 31, 2020 were as follows (in thousands): 2021 $ 269,181 2022 251,043 2023 241,631 2024 166,697 2025 and thereafter 589,715 Total expected revenue on remaining performance obligations $ 1,518,267

Net Income Per Unit

Net Income Per Unit	12 Months Ended
	Dec. 31, 2020
Earnings Per Share [Abstract]
Net Income Per Unit	Net Income Per Unit Basic net income per unit applicable to limited partners is computed by dividing limited partners' interest in net income by the weighted-average number of outstanding common units. Prior to August 13, 2020, we had more than one class of participating securities and used the two class method to calculate the net income per unit applicable to the limited partners. The classes of participating units prior to August 13, 2020 consisted of limited partner units, general partner units and IDRs. Pursuant to the IDR Restructuring Transaction, the IDRs were eliminated and the 2% general partner economic interest was converted to a non-economic general partner interest. Effective August 13, 2020, the common limited partner units are the only participating security for cash distributions. Refer to Note 12 - Equity for a discussion of the elimination of the IDRs and conversion of the 2% general partner economic interest effective August 13, 2020. The two-class method was based on the weighted-average number of common units outstanding during the period. Basic net income per unit applicable to limited partners was computed by dividing limited partners’ interest in net income, after deducting our general partner’s 2% interest and IDRs, by the weighted-average number of outstanding common units. Our net income was allocated to our general partner and limited partners in accordance with their respective partnership percentages after giving effect to priority income allocations for IDRs, which are held by our general partner pursuant to our Partnership Agreement. Earnings in excess of distributions were allocated to our general partner and limited partners based on their respective ownership interests. The IDRs were paid following the close of each quarter. As discussed in Note 4 - Related Party Transactions, pursuant to Amendment No. 2 to the Partnership Agreement, an agreement was reached for a waiver of distributions in respect of the IDRs for the GP Additional Units associated with the 5.0 million Additional Units issued in connection with the Big Spring Gathering Assets Acquisition for at least two years, through at least the distribution for the quarter ending March 31, 2022. The IDR Waiver essentially reduced the distribution made to the holders of the IDRs during this period, as the holders would not receive a share of the distribution made on the GP Additional Units. An additional waiver letter was signed that waived all of the distributions for the first quarter of 2020 on the Additional Units with respect to base distributions and the IDRs. Refer to Note 4 for additional details. Subsequently, the IDRs were eliminated in the IDR Restructuring Transaction on August 13, 2020. Diluted net income per unit applicable to common limited partners includes the effects of potentially dilutive units on our common units. As of December 31, 2020, the only potentially dilutive units outstanding consist of unvested phantom units. Our distributions earned with respect to a given period are declared subsequent to quarter end. Therefore, the table below represents total cash distributions applicable to the period in which the distributions are earned. The date of distribution for the distributions earned during the quarterly period ended December 31, 2020 is February 9, 2021. The calculation of net income per unit is as follows (dollars in thousands, except units and per unit amounts): Year Ended December 31, 2020 2019 2018 Net income attributable to partners $ 159,256 $ 96,749 $ 90,182 Less: General partner's distribution (including IDRs) (1) 18,618 33,492 25,777 Less: Limited partners' distribution 127,070 83,873 76,113 Earning in excess (deficit) of distributions $ 13,568 $ (20,616) $ (11,708) General partner's earnings: Distributions (including IDRs) (1) $ 18,618 $ 33,492 $ 25,777 Allocation of earnings in excess (deficit) of distributions 106 (412) (234) Total general partner's earnings $ 18,724 $ 33,080 $ 25,543 Limited partners' earnings on common units: Distributions $ 127,070 $ 83,873 $ 76,113 Allocation of earnings in excess (deficit) of distributions 13,462 (20,204) (11,474) Total limited partners' earnings on common units $ 140,532 $ 63,669 $ 64,639 Weighted average limited partner units outstanding: Common units - basic 33,594,284 24,413,294 24,390,286 Common units - diluted 33,597,418 24,418,641 24,396,881 Net income per limited partner unit: Common - basic $ 4.18 $ 2.61 $ 2.65 Common - diluted (2) $ 4.18 $ 2.61 $ 2.65 (1) Prior to August 13, 2020, 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. In connection with the IDR Restructuring Transaction on August 13, 2020, the IDRs were eliminated and the general partner interest became a non-economic general partner interest. See Note 12 for further discussion related to IDRs. (2) There were 5,201 and 1,776 outstanding common unit equivalents excluded from the diluted earnings per unit calculation during both years ended December 31, 2020

Inventory

Inventory	12 Months Ended
	Dec. 31, 2020
Inventory, Net [Abstract]
Inventory	InventoryInventories consisted of $3.1 million and $12.6 million of refined petroleum products as of December 31, 2020 and 2019, respectively, each of which are net of lower of cost or net realizable value reserve of a nominal amount. Inventory is stated at the lower of cost or net realizable value, with cost determined on a first-in, first-out basis. We recognize lower of cost or net realizable value charges as a component of cost of materials and other in the consolidated statements of income and comprehensive income.

Property, Plant and Equipment

Property, Plant and Equipment	12 Months Ended
	Dec. 31, 2020
Property, Plant and Equipment [Abstract]
Property, Plant and Equipment	Property, Plant and Equipment Property, plant and equipment, at cost, consist of the following (in thousands): December 31, 2020 2019 Land $ 14,533 $ 4,458 Building and building improvements 2,742 1,853 Pipelines, tanks and terminals 606,116 427,287 Asset retirement obligation assets 2,073 2,073 Other equipment 30,803 16,634 Construction in process 36,015 9,020 Property, plant and equipment 692,282 461,325 Less: accumulated depreciation (227,470) (166,281) Property, plant and equipment, net $ 464,812 $ 295,044 Property, plant and equipment, accumulated depreciation and depreciation expense by reporting segment as of and for the years ended December 31, 2020 and 2019 are as follows (in thousands): As of and For the Year Ended December 31, 2020 Pipelines and Transportation Wholesale Marketing and Terminalling Consolidated Property, plant and equipment $ 580,631 $ 111,651 $ 692,282 Less: accumulated depreciation (176,020) (51,450) (227,470) Property, plant and equipment, net $ 404,611 $ 60,201 $ 464,812 Depreciation expense $ 27,682 $ 8,049 $ 35,731 As of and For the Year Ended December 31, 2019 Pipelines and Transportation Wholesale Marketing and Terminalling Consolidated Property, plant and equipment $ 354,429 $ 106,896 $ 461,325 Less: Accumulated depreciation (125,771) (40,510) (166,281) Property, plant and equipment, net $ 228,658 $ 66,386 $ 295,044 Depreciation expense $ 20,803 $ 5,898 $ 26,701

Goodwill

Goodwill	12 Months Ended
	Dec. 31, 2020
Goodwill and Intangible Assets Disclosure [Abstract]
Goodwill	Goodwill Goodwill represents the excess of the aggregate purchase price over the fair value of the identifiable net assets acquired and is not amortized. Our goodwill relates to the West Texas assets contributed to us by Delek Marketing & Supply, LLC ("Delek Marketing"), a direct wholly owned subsidiary of Delek Holdings, in connection with our initial public offering and to the purchase price allocation of certain of our third party acquisitions. We perform an annual assessment of whether goodwill retains its value. This assessment is done more frequently if indicators of potential impairment exist. We performed our annual goodwill impairment review in the fourth quarter of 2020, 2019 and 2018. We performed a qualitative assessment for the years ended December 31, 2020, December 31, 2019 and December 31, 2018. In 2020, 2019 and 2018, the annual impairment review resulted in the determination that no indicators of impairment of goodwill were present. Our goodwill in our wholesale marketing and terminalling segment amounted to $7.5 million as of December 31, 2020, 2019 and 2018. Our goodwill in our pipelines and transportation segment amounted to $4.7 million as of December 31, 2020, 2019 and 2018.

Other Intangible Assets

Other Intangible Assets	12 Months Ended
	Dec. 31, 2020
Goodwill and Intangible Assets Disclosure [Abstract]
Other Intangible Assets	Other Intangible Assets Our identifiable intangible assets are as follows (in thousands): Useful Accumulated As of December 31, 2020 Life Gross Amortization Net Intangible assets subject to amortization: Marketing contract 20 144,219 (20,431) 123,788 Intangible assets not subject to amortization: Rights-of-way assets Indefinite 36,316 36,316 Total $ 180,535 $ (20,431) $ 160,104 Useful Accumulated As of December 31, 2019 Life Gross Amortization Net Intangible assets subject to amortization: Marketing contract 20 144,219 (13,220) $ 130,999 Intangible assets not subject to amortization: Rights-of-way assets Indefinite 15,597 15,597 Total $ 159,816 $ (13,220) $ 146,596

Long-Term Obligations

Long-Term Obligations	12 Months Ended
	Dec. 31, 2020
Debt Disclosure [Abstract]
Long-Term Obligations	Long-Term Obligations DKL Credit Facility On September 28, 2018, the Partnership entered into a third amended and restated senior secured revolving credit agreement (hereafter, the "DKL Credit Facility") with Fifth Third Bank ("Fifth Third"), as administrative agent, and a syndicate of lenders with total lender commitments of $850.0 million. The DKL Credit Facility contains a dual currency borrowing tranche that permits draw downs in U.S. or Canadian dollars. The DKL Credit Facility also contains an accordion feature whereby the Partnership can increase the size of the credit facility to an aggregate of $1.0 billion, subject to receiving increased or new commitments from lenders and the satisfaction of certain other conditions precedent. The obligations under the DKL Credit Facility remain secured by first priority liens on substantially all of the Partnership's and its subsidiaries' tangible and intangible assets. Additionally, Delek Marketing, a subsidiary of Delek Holdings, had provided a limited guaranty of the Partnership's obligations under the DKL Credit Facility. Delek Marketing's guaranty was (i) limited to an amount equal to the principal amount, plus unpaid and accrued interest, of a promissory note made by Delek Holdings in favor of Delek Marketing (the "Holdings Note") and (ii) secured by Delek Marketing's pledge of the Holdings Note to the lenders under the DKL Credit Facility. Effective March 30, 2020, Delek Marketing's limited guaranty and pledge of the Holdings Note was terminated pursuant to a guaranty and pledge release approved by the required lenders under the DKL Credit Facility. In connection with the IDR Restructuring Transaction, the Partnership entered into a First Amendment to the DKL Credit Facility (the "First Amendment") which, among other things, permitted the exchange of the IDRs and the general partner interest in the Partnership for the non-economic general partner interest, the newly issued limited partner interests in the Partnership, plus $45.0 million in cash. The First Amendment also modified the total leverage and senior leverage ratios (as defined in the DKL Credit Facility) calculations to reduce the total funded debt (as defined in the DKL Credit Facility) component thereof by the total amount of unrestricted consolidated cash and cash equivalents on the balance sheet of the Partnership and its subsidiaries up to $20.0 million. The DKL Credit Facility has a maturity date of September 28, 2023. Borrowings denominated in U.S. dollars bear interest at either a U.S. dollar prime rate, plus an applicable margin, or the London Interbank Offered Rate ("LIBOR") plus an applicable margin, at the election of the borrowers. Borrowings denominated in Canadian dollars bear interest at either a Canadian dollar prime rate, plus an applicable margin, or the Canadian Dealer Offered Rate, plus an applicable margin, at the election of the borrowers. The applicable margin in each case and the fee payable for any unused revolving commitments vary based upon the Partnership's most recent total leverage ratio calculation delivered to the lenders, as called for and defined under the terms of the DKL Credit Facility. At December 31, 2020, the weighted average interest rate for our borrowings under the facility was approximately 2.44%. Additionally, the DKL Credit Facility requires us to pay a leverage ratio dependent quarterly fee on the average unused revolving commitment. As of December 31, 2020, this fee was 0.35% per year. As of December 31, 2020, we had $746.6 million of outstanding borrowings under the DKL Credit Facility, with no letters of credit in place. Unused credit commitments under the DKL Credit Facility as of December 31, 2020 were $103.4 million. 6.750% Senior Notes Due 2025 On May 23, 2017, the Partnership and Delek Logistics Finance Corp., a Delaware corporation and a wholly owned subsidiary of the Partnership (“Finance Corp.” and together with the Partnership, the “Issuers”), issued $250.0 million in aggregate principal amount of 6.75% senior notes due 2025 (the “2025 Notes”) at a discount. The 2025 Notes are general unsecured senior obligations of the Issuers. The 2025 Notes are unconditionally guaranteed jointly and severally on a senior unsecured basis by the Partnership's existing subsidiaries (other than Finance Corp., the "Guarantors") and will be unconditionally guaranteed on the same basis by certain of the Partnership’s future subsidiaries. The 2025 Notes rank equal in right of payme nt with all existing and future senior indebtedness of the Issuers, and senior in right of payment to any future subordinated indebtedness of the Issuers. Interest on the 2025 Notes is payable semi-annually in arrears on each May 15 and November 15, commencing November 15, 2017. Beginning on May 15, 2020, th e Issuers may, subject to certain conditions and limitations, redeem all or part of the 2025 Notes at a redemption price of 105.063% of the redeemed principal for the twelve-month period beginning on May 15, 2020, 103.375% for the twelve-month period beginning on May 15, 2021, 101.688% for the twelve-month period beginning on May 15, 2022 and 100.00% beginning on May 15, 2023 and thereafter, plus accrued and unpaid interest, if any. In the event of a change of control, accompanied or followed by a ratings downgrade within a certain period of time, subject to certain conditions and limitations, the Issuers will be obligated to make an offer for the purchase of the 2025 Notes from holders at a price equal to 101% of the principal amount thereof, plus accrued and unpaid interest. On April 25, 2018, we made an offer to exchange the 2025 Notes and the related guarantees that were validly tendered and not validly withdrawn for an equal principal amount of exchange notes that are freely tradeable, as required under the terms of the original indenture. The terms of the exchange notes that were issued in May 2018 as a result of the exchange (also referred to as the "2025 Notes") are substantially identical to the terms of the original 2025 Notes. As of December 31, 2020, we had $250.0 million in outstanding principal amount of the 2025 Notes. As of December 31, 2020, the effective interest rate related to the 2025 Notes was approximately 7.45%. Outstanding borrowings under the 2025 Notes are net of deferred financing costs and debt discount of $3.3 million and $1.0 million, respectively, as of December 31, 2020. Principal maturities of the Partnership's existing third party debt instruments for the next five years and thereafter are as follows as of December 31, 2020 (in thousands): 2021 2022 2023 2024 2025 Thereafter Total DKL Credit Facility $ — $ — $ 746,600 $ — $ — $ — $ 746,600 2025 Notes $ — $ — $ — $ — $ 250,000 $ — $ 250,000

Equity

Equity	12 Months Ended
	Dec. 31, 2020
Equity [Abstract]
Equity	Equity We had 8,697,468 common limited partner units held by the public outstanding as of December 31, 2020. Additionally, as of December 31, 2020, Delek Holdings owned an 80.0% limited partner interest in us, consisting of 34,745,868 common limited partner units. Effective August 13, 2020, the Partnership closed on the IDR Restructuring Transaction, and contemporaneous with this transaction, Delek Holdings purchased a 5.2% ownership interest in our general partner from certain affiliates, who were also members of our general partner's management and board of directors, at fair market value. Delek Holdings now owns 100% of the outstanding ownership interest in our general partner. As part of this transaction, we expensed approximately $1.1 million of transaction costs. In August 2020, we filed a shelf registration statement with the U.S. Securities and Exchange Commission, which subsequently became effective, for the proposed re-sale or other disposition from time to time by Delek Holdings of up to 14.0 million of our common limited partner units. As of December 31, 2020, we did not sell any securities under this shelf registration statement and we will not receive any proceeds from the sale of securities by Delek Holdings. Equity Activity The table below summarizes the changes in the number of units outstanding from December 31, 2018 through December 31, 2020. Common - Public Common - Delek Holdings 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 — — 434 434 Unit-based compensation awards (1) 21,220 — — 21,220 Balance at December 31, 2018 9,109,807 15,294,046 498,038 24,901,891 General partner units issued to maintain 2% interest — — 444 444 Unit-based compensation awards (1) 21,772 — — 21,772 Balance at December 31, 2019 9,131,579 15,294,046 498,482 24,924,107 General partner units issued to maintain 2% interest — — 102,196 102,196 Unit-based compensation awards (1) 17,711 — — 17,711 Big Spring Gathering Assets Acquisition equity issuance — 5,000,000 — 5,000,000 Delek Holdings unit purchases from public (451,822) 451,822 — — General Partner units converted to non-economic general partner interest — — (600,678) (600,678) Common limited partner units issued in IDR Restructuring Transaction — 14,000,000 — 14,000,000 Balance at December 31, 2020 8,697,468 34,745,868 — 43,443,336 (1) Unit-based compensation awards are presented net of 926 and 598 units withheld for taxes as of December 31, 2020 and 2018, respectively. There were no units withheld for taxes as of December 31, 2019. Issuance of Additional Securities Our Partnership Agreement authorizes us to issue an unlimited number of additional partnership securities for the consideration and on the terms and conditions determined by our general partner without the approval of the unitholders. Costs associated with the issuance of securities are allocated to all unitholders' capital accounts based on their ownership interest at the time of issuance. Allocations of Net Income Our Partnership Agreement contains provisions for the allocation of net income and loss to the unitholders. For purposes of maintaining partner capital accounts, the Partnership Agreement specifies that items of income and loss shall be allocated among the partners in accordance with their respective percentage interest. Prior to August 13, 2020, normal allocations were made according to percentage interests after giving effect to priority income allocations in an amount equal to incentive cash distributions allocated 100% to our general partner. Effective August 13, 2020, the IDRs were eliminated and the 2% general partner economic interest was converted to a non-economic general partner interest that no longer receives cash distributions. The following table presents the allocation of the general partner's interest in net income (in thousands, except percentage of ownership interest): Year Ended December 31, 2020 2019 2018 Net income attributable to partners $ 159,256 $ 96,749 $ 90,182 Less: General partner's IDRs (17,632) (31,781) (24,224) Net income available to partners $ 141,624 $ 64,968 $ 65,958 General partner's ownership interest 2.0 % 2.0 % 2.0 % General partner's allocated interest in net income 1,092 1,299 1,319 General partner's IDRs 17,632 31,781 24,224 Total general partner's interest in net income $ 18,724 $ 33,080 $ 25,543 Incentive Distribution Rights Effective August 13, 2020, the Partnership closed on the IDR Restructuring Transaction and the general partner no longer receives any cash distributions. Prior to August 13, 2020, our general partner was entitled to 2.0% of all quarterly distributions that we make prior to our liquidation. Our general partner had the right, but not the obligation, to contribute up to a proportionate amount of capital to us to maintain its current general partner interest. Our general partner held IDRs that entitled it to receive increasing percentages, up to a maximum of 48.0%, of the cash we distributed from operating surplus (as defined in our Partnership Agreement) in excess of 0.43125 per unit per quarter. The maximum distribution was 48.0% and did not include any distributions that our general partner or its affiliates may have received on common or general partner units that it owns. As of August 12, 2020, the IDRs held by our general partner were entitled to receive the maximum distribution. Cash Distributions Our Partnership Agreement sets forth the calculation to be used to determine the amount and priority of available cash distributions that our limited partner unitholders and general partner will receive. The cash distributions for periods before August 13, 2020 include distributions to the 2% general partner interest which was converted to non-economic general partner interest and IDRs which were permanently eliminated. Our distributions earned with respect to a given period are declared subsequent to quarter end. 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 December 31, 2018 $ 0.810 $ 3.24 $ 26,949 February 12, 2019 February 4, 2019 March 31, 2019 $ 0.820 $ 3.28 $ 27,438 May 14, 2019 May 7, 2019 June 30, 2019 $ 0.850 $ 3.40 $ 28,914 August 13, 2019 August 5, 2019 September 30, 2019 $ 0.880 $ 3.52 $ 30,379 November 12, 2019 November 4, 2019 December 31, 2019 $ 0.885 $ 3.54 $ 30,634 February 12, 2020 February 4, 2020 March 31, 2020 $ 0.890 $ 3.56 $ 30,878 May 12, 2020 May 5, 2020 June 30, 2020 $ 0.900 $ 3.60 $ 35,969 August 12, 2020 August 7, 2020 September 30, 2020 $ 0.905 $ 3.62 $ 39,308 November 12, 2020 November 6, 2020 December 31, 2020 $ 0.910 $ 3.64 $ 39,533 February 9, 2021 February 2, 2021 The allocations of total quarterly cash distributions made to general and limited partners for the years ended December 31, 2020, 2019 and 2018 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): Year Ended December 31, 2020 2019 2018 General partner's distributions: General partner's distributions $ 986 $ 1,711 $ 1,553 General partner's IDRs 17,632 31,781 24,224 Total general partner's distributions 18,618 33,492 25,777 Limited partners' distributions: Common limited partners' distributions 127,070 83,873 76,113 Total cash distributions $ 145,688 $ 117,365 $ 101,890 Cash distributions per limited partner unit $ 3.605 $ 3.440 $ 3.120

Equity Based Compensation

Equity Based Compensation	12 Months Ended
	Dec. 31, 2020
Share-based Payment Arrangement, Noncash Expense [Abstract]
Equity Based Compensation	Equity Based Compensation The Delek Logistics GP, LLC 2012 Long-Term Incentive Plan (the "LTIP") was adopted by the Delek Logistics GP, LLC board of directors in connection with the completion of our initial public offering in November 2012. The LTIP is administered by the Conflicts Committee of the board of directors. Equity-based compensation expense is included in general and administrative expenses in the accompanying consolidated statements of income and comprehensive income and is immaterial for the years ended December 31, 2020, 2019 and 2018. See Note 2 for additional information on terms and measurement considerations.

Equity Method Investments

Equity Method Investments	12 Months Ended
	Dec. 31, 2020
Equity Method Investments and Joint Ventures [Abstract]
Equity Method Investments	Equity Method Investments In May 2019, the Partnership, through its wholly owned indirect subsidiary DKL Pipeline, LLC (“DKL Pipeline”), entered into a Contribution and Subscription Agreement (the “Contribution Agreement”) with Plains Pipeline, L.P. (“Plains”) and Red River Pipeline Company LLC (“Red River”). Pursuant to the Contribution Agreement, DKL Pipeline contributed $124.7 million, substantially all of which was financed by borrowings under the DKL Credit Facility, to Red River in exchange for a 33% membership interest in Red River and DKL Pipeline’s admission as a member of Red River. In addition, we contributed $0.4 million of start up capital pursuant to the Amended and Restated Limited Liability Company Agreement. During the third quarter of 2020, Red River, which owns a crude oil pipeline running from Cushing, Oklahoma to Longview, Texas, completed a planned expansion project to increase the pipeline capacity and commenced operations on the completed expansion project on October 1, 2020. We contributed $3.5 million related to such expansion project in May 2019. During the year ended December 31, 2020, we made additional capital contributions totaling $12.2 million based on capital calls received. Summarized financial information for Red River on a 100% basis is shown below (in thousands): Year Ended Year Ended December 31, 2020 December 31, 2019 Current Assets $ 13,488 $ 9,278 Non-current Assets $ 413,259 $ 381,778 Current liabilities $ 7,789 $ 8,291 Year Ended For the period December 31, 2020 April 24, 2019 - December 31, 2019 Revenues $ 51,001 $ 38,352 Gross profit $ 31,103 $ 25,919 Operating income $ 30,382 $ 25,497 Net income $ 30,404 $ 25,548 We have two joint ventures that have constructed separate crude oil pipeline systems and related ancillary assets, which are serving third parties and subsidiaries of Delek Holdings. We own a 50% membership interest in the entity formed with an affiliate of Plains All American Pipeline, L.P. ("CP LLC") to operate one of these pipeline systems and a 33% membership interest in the entity formed with Rangeland Energy II, LLC ("Rangeland Energy") to operate the other pipeline system. During 2018, Rangeland Energy was acquired by Andeavor and the legal entity in which we have an equity investment became Andeavor Logistics RIO Pipeline LLC ("Andeavor Logistics"). Combined summarized financial information for these two equity method investees on a 100% basis is shown below (in thousands): Year Ended Year Ended December 31, 2020 December 31, 2019 Current assets $ 20,763 $ 29,476 Non-current assets $ 253,862 $ 262,300 Current liabilities $ 1,496 $ 6,391 Non-current liabilities $ — $ 8 Year Ended Year Ended Year Ended December 31, 2020 December 31, 2019 December 31, 2018 Revenues $ 55,482 $ 48,703 $ 35,050 Gross profit $ 36,904 $ 30,473 $ 17,690 Operating income $ 34,951 $ 28,503 $ 12,909 Net Income $ 34,977 $ 28,601 $ 15,701 The Partnership's investments in these three entities were financed through a combination of cash from operations and borrowings under the DKL Credit Facility. As of December 31, 2020 and December 31, 2019, the Partnership's investment balance in these joint ventures was $253.7 million and $247.0 million, respectively. We do not consolidate any part of the assets or liabilities or operating results of our equity method investees. Our share of net income or loss of the investees will increase or decrease, as applicable, the carrying value of our investments in unconsolidated affiliates. With respect to our equity method investments, we determined that these entities do not represent variable interest entities and consolidation is not required. We have the ability to exercise significant influence over each of these joint ventures through our participation in the management committees, which make all significant decisions. However, since all significant decisions require the consent of the other investor(s) without regard to economic interest, we have determined that we have joint control and have applied the equity method of accounting. Our investment in these joint ventures is reflected in our pipelines and transportation segment.

Segment Data

Segment Data	12 Months Ended
	Dec. 31, 2020
Segment Reporting [Abstract]
Segment Data	Segment Data We aggregate our operating segments into two reportable segments: (i) pipelines and transportation; and (ii) wholesale marketing and terminalling. Our operating segments adhere to the accounting policies used for our consolidated financial statements. Our operating segments are managed separately because each segment requires different industry knowledge, technology and marketing strategies. Decisions concerning the allocation of resources and assessment of operating performance are made based on this segmentation. Management measures the operating performance of each of its reportable segments based on segment contribution margin. Segment contribution margin is defined as net revenues less cost of materials and other and operating expenses, excluding depreciation and amortization. The following is a summary of business segment operating performance as measured by contribution margin for the periods indicated (in thousands): Year Ended December 31, 2020 2019 2018 Pipelines and Transportation Net revenues: Affiliate $ 233,873 $ 155,211 $ 138,418 Third party 17,596 23,107 15,149 Total pipelines and transportation 251,469 178,318 153,567 Cost of materials and other 45,934 22,826 19,878 Operating expenses (excluding depreciation and amortization) 42,267 54,827 39,934 Segment contribution margin $ 163,268 $ 100,665 $ 93,755 Capital spending (1) $ 7,631 $ 6,600 $ 6,840 Wholesale Marketing and Terminalling Net revenues: Affiliate (2) $ 148,793 $ 105,803 $ 102,391 Third party 163,156 299,871 401,651 Total wholesale marketing and terminalling 311,949 405,674 504,042 Cost of materials and other 223,160 313,647 409,183 Operating expenses (excluding depreciation and amortization) 14,012 19,330 18,810 Segment contribution margin $ 74,777 $ 72,697 $ 76,049 Capital spending (1) $ 7,818 $ 3,387 $ 4,725 Consolidated Net revenues: Affiliate $ 382,666 $ 261,014 $ 240,809 Third party 180,752 322,978 416,800 Total Consolidated 563,418 583,992 657,609 Cost of materials and other 269,094 336,473 429,061 Operating expenses (excluding depreciation and amortization presented below) 56,279 74,157 58,744 Contribution margin 238,045 173,362 169,804 General and administrative expenses 22,587 20,815 17,166 Depreciation and amortization 35,731 26,701 25,990 Other operating (income) expense, net (66) 34 891 Operating income $ 179,793 $ 125,812 $ 125,757 Capital spending (1) $ 15,449 $ 9,987 $ 11,565 (1) Capital spending excludes transaction costs capitalized in the amount of $0.4 million that relate to the Big Spring Logistics Assets Acquisition for the year ended December 31, 2018. Additionally, capital spending for the year ended December 31, 2020, excludes transaction costs capitalized in the amount of $0.3 million that relate to the Trucking Assets Acquisition and $0.7 million that relate to the Big Spring Gathering Assets Acquisition. (2) Affiliate revenue for the wholesale marketing and terminalling segment is presented net of amortization expense pertaining to the Marketing Contract Intangible Acquisition. See Note 3 for additional information. The following table summarizes the total assets for each segment as of December 31, 2020 and 2019 (in thousands). Assets for each segment includes property, plant and equipment, equity method investments, intangible assets and inventory. Year Ended December 31, 2020 2019 Pipelines and transportation $ 723,317 $ 509,666 Wholesale marketing and terminalling 206,918 214,259 Other 26,182 20,522 Total assets $ 956,417 $ 744,447

Income Taxes

Income Taxes	12 Months Ended
	Dec. 31, 2020
Income Tax Disclosure [Abstract]
Income Taxes	Income Taxes For tax purposes, each partner of the Partnership is required to take into account its share of income, gain, loss and deduction in computing its federal and state income tax liabilities, regardless of whether cash distributions are made to such partner by the Partnership. The taxable income reportable to each partner takes into account differences between the tax basis and fair market value of our assets, the acquisition price of such partner's units and the taxable income allocation requirements under our Partnership Agreement. The Partnership is not a taxable entity for federal income tax purposes. While most states do not impose an entity level tax on partnership income, the Partnership is subject to entity level tax in both Tennessee and Texas. The Partnership does not file a separate Texas tax return. Our results of operations are included in Delek Holdings’ consolidated return. However, the provisions of ASC 740 have been followed as if we were a stand-alone entity. As a result, the Partnership must record deferred income taxes for the differences between book and tax bases of its assets and liabilities based on those states' enacted tax rates and laws that will be in effect when the differences are expected to reverse. As of December 31, 2020 and 2019, the total non-current deferred tax liability was $0.6 million and $0.2 million, respectively. These amounts are included in other non-current liabilities in our accompanying consolidated balance sheets. The majority component of our non-current deferred tax liabilities as of December 31, 2020 and 2019, respectively, was depreciation and amortization. The difference between the actual income tax expense and the tax expense computed by applying the statutory federal income tax rate to income before income taxes is attributable to the following (in thousands): Year Ended December 31, 2020 2019 2018 State income taxes $ 223 $ 967 $ 534 Income tax expense $ 223 $ 967 $ 534 Income tax expense (benefit) is as follows (in thousands): Year Ended December 31, 2020 2019 2018 Current $ (178) $ 471 $ 382 Deferred $ 401 496 152 Total $ 223 $ 967 $ 534 Delek Holdings files a consolidated Texas gross margin tax return, and tax payments for the Partnership are paid by Delek Holdings. Therefore, a portion of the current tax payable is included in accounts receivable/payable from related parties. As of both December 31, 2020 and 2019, income taxes payable were immaterial and were included in accounts receivable/payable from related parties in the accompanying consolidated balance sheets. Taxes that are determined on a consolidated basis apply the “benefits for loss” allocation method; thus, tax attributes are realized when used in the combined tax return to the extent that they have been subject to a valuation allowance. We are no longer subject to audit through 2015. We recognize accrued interest and penalties related to unrecognized tax benefits as an adjustment to the current provision for income taxes. There were no uncertain tax positions recorded as of December 31, 2020 or 2019, and there were no interest or penalties

Commitments and Contingencies

Commitments and Contingencies	12 Months Ended
	Dec. 31, 2020
Commitments and Contingencies Disclosure [Abstract]
Commitments and Contingencies	Commitments and Contingencies Litigation In the ordinary conduct of our business, we are from time to time subject to lawsuits, investigations and claims, including environmental claims and employee-related matters. Although we cannot predict with certainty the ultimate resolution of lawsuits, investigations and claims asserted against us, including civil penalties or other enforcement actions, we do not believe that any currently pending legal proceeding or proceedings to which we are a party will have a material adverse effect on our financial statements. See "Crude Oil and Other Releases" below for discussion of an enforcement action. Environmental Health and Safety We are subject to extensive federal, state and local environmental and safety laws and regulations enforced by various agencies, including the Environmental Protection Agency (the "EPA"), the United States Department of Transportation, the Occupational Safety and Health Administration, as well as numerous state, regional and local environmental, safety and pipeline agencies. These laws and regulations govern the discharge of materials into the environment, waste management practices and pollution prevention measures, as well as the safe operation of our pipelines and the safety of our workers and the public. Numerous permits or other authorizations are required under these laws and regulations for the operation of our terminals, pipelines, saltwells, trucks and related operations, and may be subject to revocation, modification and renewal. These laws and permits raise potential exposure to future claims and lawsuits involving environmental and safety matters, which could include soil and water contamination, air pollution, personal injury and property damage allegedly caused by substances which we handled, used, released or disposed of, transported, or that relate to pre-existing conditions for which we have assumed responsibility. We believe that our current operations are in substantial compliance with existing environmental and safety requirements. However, there have been and we expect that there will continue to be ongoing discussions about environmental and safety matters between us and federal and state authorities, including notices of violations, citations and other enforcement actions, some of which have resulted or may result in changes to operating procedures and in capital expenditures. While it is often difficult to quantify future environmental or safety related expenditures, we anticipate that continuing capital investments and changes in operating procedures will be required to comply with existing and new requirements, as well as evolving interpretations and more strict enforcement of existing laws and regulations. Releases of hydrocarbons or hazardous substances into the environment could, to the extent the event is not insured, or is not a reimbursable event under the Omnibus Agreement, subject us to substantial expenses, including costs to respond to, contain and remediate a release, to comply with applicable laws and regulations and to resolve claims by third parties for personal injury, property damage or natural resources damages. Crude Oil and Other Releases We have experienced several crude oil and other releases involving our assets. There were no material releases that occurred during the year ended December 31, 2020, and there were five releases that occurred throughout the year 2019. Cleanup operations and site maintenance and remediation efforts on these and other releases are at various stages of completion. The majority of the remediation efforts for these releases are substantially completed or have received regulatory closure. With the exception of the Sulphur Springs release defined below, we expect regulatory closure in 2021 for the release sites that have not yet received it. Many of the releases have occurred on our system of common carrier pipelines which gather crude in southern Arkansas and northern Louisiana, and which are primarily located within 60 miles of Delek Holdings’ El Dorado refinery ("El Dorado Gathering System"). During the year ended December 31, 2019, we decommissioned certain sections of the El Dorado Gathering System in an effort to improve the safety and integrity of the system. The decommissioning of these sections was completed in August 2019. The project did not have a material effect on our financial results. Regulatory authorities could require additional remediation based on the results of our remediation efforts. We may incur additional expenses as a result of further scrutiny by regulatory authorities and continued compliance with laws and regulations to which our assets are subject. As of December 31, 2020, we have accrued $0.3 million for remediation and other such matters related to these releases. On October 3, 2019, a release of diesel fuel involving one of our pipelines occurred near Sulphur Springs, Texas (the "Sulphur Springs Release"). Cleanup operations and site maintenance and remediation on this release have been substantially completed where such costs incurred totaled $7.1 million during 2019. During the year ended December 31, 2020, we incurred approximately $0.5 million of additional costs related to final clean-up of this release. Ground water monitoring wells were installed in the third quarter of 2020 and will be monitored quarterly until the site is closed. Additionally, in the third quarter of 2020 we conducted creek bed sediment sampling and the results indicated no issues with the groundwater. In the fourth quarter of 2020 we submitted an actual property assessment report (the "APAR") that assessed site conditions and recommends closure of the site. We filed suit in January 2020 against a third party contractor, seeking damages related to this release. We have not received notification that any legal action with respect to fines and penalties will be pursued by the regulatory agencies. Expenses incurred for the remediation of these crude oil and other releases are included in operating expenses in our consolidated statements of income and comprehensive income. The majority of our releases have been subsequently reimbursed by Delek Holdings pursuant to the terms of the Omnibus Agreement, with the exception of the Sulphur Springs Release above as it is not covered under the Omnibus Agreement. Reimbursements are recorded as a reduction to operating expense. We do not believe the total costs associated with these events, whether alone or in the aggregate, including any fines or penalties and net of available insurance, indemnification or reimbursement, will have a material adverse effect upon our business, financial condition or results of operations During the years ended December 31, 2020 and 2019, we recorded approximately $0.1 million and $0.4 million of expense, respectively, which is net of total reimbursable costs of $0.1 million and $4.8 million for the years ended December 31, 2020 and 2019, respectively, from Delek Holdings pursuant to the terms of the Omnibus Agreement. In March 2013, a release of crude oil occurred from a pumping facility at our Magnolia Station located West of Delek Holdings' El Dorado Refinery (the "Magnolia Release"). On July 13, 2018, the United States Department of Justice (the "DOJ") and the State of Arkansas filed a civil action against two of our wholly-owned subsidiaries, Delek Logistics Operating, LLC and SALA Gathering Systems, LLC, in the United States District Court (the "Court") for the Western District of Arkansas related to the Magnolia Release. In December 2018, the Partnership, the United States and the State of Arkansas reached an agreement to settle the claims related to the Magnolia Release abandoning the demand for a compliance audit at the Magnolia terminal in exchange for settlement payments totaling $2.2 million. On November 8, 2019, a consent decree was entered with the Court and on November 20, 2019 final payments were made to the State of Arkansas in the amount of $0.6 million and to the DOJ in the amount of $1.7 million, which amounts include a nominal amount of interest.

Leases

Leases	12 Months Ended
	Dec. 31, 2020
Leases [Abstract]
Leases	Leases We lease certain pipeline and transportation equipment. Leases with an initial term of 12 months or less are not recorded on the balance sheet; we recognize lease expense for these leases on a straight-line basis over the lease term. Our leases do not have any outstanding renewal options. Certain leases also include options to purchase the leased equipment. Certain of our lease agreements include rates based on equipment usage and others include rate inflationary indices based increases. Our lease agreements do not contain any material residual value guarantees or material restrictive covenants. The following table presents additional information related to our operating leases in accordance ASC 842: Year Ended December 31, Year Ended December 31, (in thousands) 2020 2019 Lease Cost (1) Operating lease cost $ 7,478 $ 4,643 Short-term lease cost (2) 1,852 850 Variable lease costs 1,002 — Total lease cost $ 10,332 $ 5,493 Other Information (1) Cash paid for amounts included in the measurement of lease liabilities: Operating cash flows from operating leases $ (7,478) $ (4,643) Leased assets obtained in exchange for new operating lease liabilities $ 26,528 $ 1,285 Leased assets obtained in exchange for new financing lease liabilities $ 5,562 $ — December 31, 2020 December 31, 2019 Weighted-average remaining lease term (years) for operating leases 3.56 4.00 Weighted-average discount rate (3) operating leases 6.0 % — % Weighted-average remaining lease term (years) for finance lease 2.92 0.00 Weighted-average discount rate (3) finance lease 1.8 % — % (1) Includes an immaterial amount of financing lease cost. (2) Includes an immaterial amount of variable lease cost. (3) Our discount rate is primarily based on our incremental borrowing rate in accordance with ASC 842. The following is an estimate of the maturity of our lease liabilities for operating leases having remaining noncancellable terms in excess of one year as of December 31, 2020 (in thousands) under ASC 842: 2021 $ 7,989 2022 9,896 2023 6,317 2024 5,698 2025 3,601 Thereafter 1,736 Total lease payments $ 35,237 Less: Interest 11,128 Present value of lease liabilities $ 24,109 The following is an estimate of the maturity of our lease liabilities for financing lease having remaining noncancellable terms in excess of one year as of December 31, 2020 (in thousands) under ASC 842: 2021 $ 2,060 2022 1,902 2023 1,585 Total lease payment $ 5,547 Less: Interest 136 Present values of lease liabilities $ 5,411

Selected Quarterly Financial Da

Selected Quarterly Financial Data (Unaudited)	12 Months Ended
	Dec. 31, 2020
Selected Quarterly Financial Information [Abstract]
Selected Quarterly Financial Data (Unaudited)	Selected Quarterly Financial Data (Unaudited) Quarterly financial information for the years ended December 31, 2020 and 2019 is summarized below. The quarterly financial information summarized below has been prepared by management and is unaudited (in thousands, except per unit data). For the Three Month Periods Ended March 31, 2020 June 30, 2020 September 30, 2020 December 31, 2020 Net revenues $ 163,401 $ 117,637 $ 142,268 $ 140,112 Operating income $ 35,042 $ 47,881 $ 51,765 $ 45,105 Net income $ 27,796 $ 44,415 $ 46,328 $ 40,717 Limited partners' interest in net income $ 18,719 $ 34,768 $ 46,328 $ 40,717 Net income per limited partner unit: Common - basic $ 0.76 $ 1.18 $ 1.26 $ 0.94 Common - diluted $ 0.76 $ 1.18 $ 1.26 $ 0.94 For the Three Month Periods Ended March 31, 2019 June 30, 2019 September 30, 2019 December 31, 2019 Net revenues $ 152,483 $ 155,342 $ 137,556 $ 138,610 Operating income $ 29,111 $ 32,256 $ 34,729 $ 29,715 Net income $ 19,696 $ 24,885 $ 30,530 $ 21,638 Limited partners' interest in net income $ 12,426 $ 16,806 $ 21,635 $ 12,804 Net income per limited partner unit: Common - basic $ 0.51 $ 0.69 $ 0.89 $ 0.52 Common - diluted $ 0.51 $ 0.69 $ 0.89 $ 0.52

Subsequent Events

Subsequent Events	12 Months Ended
	Dec. 31, 2020
Subsequent Events [Abstract]
Subsequent Events	Subsequent EventsDistribution DeclarationOn January 22, 2021, our general partner's board of directors declared a quarterly cash distribution of $0.910 per unit, paid on February 9, 2021, to unitholders of record on February 2, 2021.

Accounting Policies (Policies)

Accounting Policies (Policies)	12 Months Ended
	Dec. 31, 2020
Accounting Policies [Abstract]
Organization	Organization As used in this report, the terms "Delek Logistics Partners, LP," the "Partnership," "we," "us," or "our" may refer to Delek Logistics Partners, LP, one or more of its consolidated subsidiaries or all of them taken as a whole.
Basis of Presentation	Basis of Presentation Our consolidated financial statements include the accounts of the Partnership and its subsidiaries. We have evaluated subsequent events through the filing of this Annual Report on Form 10-K. Any material subsequent events that occurred during this time have been properly recognized or disclosed in our financial statements. The preparation of our financial statements in conformity with U.S. generally accepted accounting principles (“GAAP”) and in accordance with the rules and regulations of the Securities and Exchange Commission (“SEC”) requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities and disclosure of contingent assets and liabilities at the date of the
Reclassifications	Reclassifications Certain immaterial reclassifications have been made to prior period presentation in order to conform to the current year presentation.
Segment Reporting	Segment Reporting We are an energy business focused on crude oil, intermediate and refined products pipeline and storage activities and wholesale marketing, terminalling and offloading activities. Management reviews operating results in two reportable segments: (i) pipelines and transportation and (ii) wholesale marketing and terminalling. • The assets and investments reported in the pipeline and transportation segment provide crude oil gathering and crude oil, intermediate and refined products transportation and storage services to Delek Holdings' refining operations and independent third parties. • The wholesale marketing and terminalling segment provides marketing services for the refined products output of the Delek Holdings' refineries, engages in wholesale activity at our terminals and terminals owned by third parties, whereby we purchase light product for sale and exchange to third parties, and provides terminalling services at our refined products terminals to independent third parties and Delek Holdings.
Cash and Cash Equivalents	Cash and Cash EquivalentsWe maintain cash and cash equivalents in accounts with large, U.S. financial institutions. Any highly liquid investments purchased with an original maturity of three months or less are considered to be cash equivalents.
Accounts Receivable	Accounts ReceivableAccounts receivable primarily consists of trade receivables generated in the ordinary course of business. We perform on-going credit evaluations of our customers and generally do not require collateral on accounts receivable. All accounts receivable amounts are considered to be fully collectible.
Inventory	InventoryInventory consists of refined products, which are stated at the lower of cost or net realizable value, with cost determined on a first-in, first-out ("FIFO") basis
Property, Plant and Equipment	Property, Plant and Equipment Assets acquired in conjunction with business acquisitions are recorded at estimated fair market value in accordance with the purchase method of accounting as prescribed in Accounting Standards Codification ("ASC") 805, Business Combinations ("ASC 805"). Other acquisitions of property and equipment are carried at cost. Acquisitions of net assets that do not constitute a business are accounted for by allocating the cost of the acquisition to individual assets acquired and liabilities assumed on a relative fair value basis and shall not give rise to goodwill as prescribed in ASC 805. Betterments, renewals and extraordinary repairs that extend the life of an asset are capitalized. Maintenance and repairs are charged to expense as incurred. Depreciation is computed using the straight-line method over management’s estimated useful lives of the related assets. The estimated useful lives are as follows: Years Buildings and building improvements 15-40 Pipelines, tanks and terminals 15-40 Asset retirement obligation assets 15-50 Other equipment 3-15
Intangible Assets	Intangible Assets Intangible assets consist of indefinite-lived rights of way and a marketing contract intangible. The marketing contract intangible is amortized on a straight-line basis over a 20 year period as a component of net revenues from affiliates. Acquired intangible assets determined to have an indefinite useful life are not amortized, but are tested for impairment in connection with our evaluation of long-lived assets as events and circumnstances indicate that the assets might be impaired.
Property, Plant and Equipment and Intangibles Impairment	Property, Plant and Equipment and Intangibles Impairment Property, plant and equipment and intangibles are evaluated for impairment whenever indicators of impairment exist. In accordance with ASC 360, Property, Plant and Equipment and ASC 350, Intangibles - Goodwill and Other , we evaluate the realizability of these long-lived assets as events occur that might indicate potential impairment. In doing so, we assess whether the carrying amount of the asset is recoverable by estimating the sum of the future cash flows expected to result from the use of the asset, undiscounted and without interest charges. If the carrying amount is more than the recoverable amount, an impairment charge must be recognized based on the fair value of the asset.
Goodwill and Potential Impairment	Goodwill and Potential Impairment Goodwill in an acquisition represents the excess of the aggregate purchase price over the fair value of the identifiable net assets. Goodwill is reviewed at least annually during the fourth quarter for impairment, or more frequently if indicators of impairment exist, such as disruptions in our business, unexpected significant declines in operating results or a sustained market capitalization decline. Goodwill is evaluated for impairment by comparing the carrying amount of the reporting unit to its estimated fair value. The Company adopted ASU 2017-04, Goodwill and Other (Topic 350); Simplifying the Test for Goodwill Impairment , during the fourth quarter of 2018. In accordance with this guidance, a goodwill impairment charge is recognized for the amount that the carrying amount of a reporting unit, including
Equity Method Investments	Equity Method Investments For equity investments that are not required to be consolidated under the variable or voting interest model, we evaluate the level of influence we are able to exercise over an entity’s operations to determine whether to use the equity method of accounting. Our judgment regarding the level of influence over an equity method investment includes considering key factors such as our ownership interest, participation in policy-making and other significant decisions and material intercompany transactions. Equity investments for which we determine we have significant influence are accounted for as equity method investments. Amounts recognized for equity method investments are included in equity method investments in our consolidated balance sheets and adjusted for our share of the net earnings and losses of the investee, dividends received and cash distributions from the investee, which are separately stated in our consolidated statements of income and comprehensive income and our consolidated statements of cash flows. We evaluate our equity method investments presented for impairment whenever events or changes in circumstances indicate that the carrying amounts of such investments may be impaired. A loss is recorded in earnings in the current period if a decline in the value of an equity method investment is determined to be other than temporary.
Fair Value of Financial Instruments	Fair Value of Financial Instruments The fair values of financial instruments are estimated based upon current market conditions and quoted market prices for the same or similar instruments. Management estimates that the carrying value approximates fair value for all of our assets and liabilities that fall under the scope of ASC 825, Financial Instruments
Self Insurance Reserves	Self-Insurance ReservesWe have no employees. Rather, we are managed by the directors and officers of our general partner. However, Delek Holdings employees providing services to the Partnership are covered under Delek Holdings’ insurance programs. Delek Holdings has workers' compensation and liability insurance with varying retentions and deductibles with limits that management considers adequate.
Environmental Expenditures	Environmental Expenditures It is our policy to accrue environmental and clean-up related costs of a non-capital nature when it is both probable that a liability has been incurred and the amount can be reasonably estimated. Environmental liabilities represent the current estimated costs to investigate and remediate contamination at sites where we have environmental exposure. This estimate is based on assessments of the extent of the contamination, the selected remediation technology and review of applicable environmental regulations, typically considering estimated activities and costs for 15 years, and up to 30 years if a longer period is believed reasonably necessary. Such estimates may require judgment with respect to costs, time frame and extent of required remedial and clean-up activities. Accruals for estimated costs from environmental remediation obligations generally are recognized no later than completion of the remedial feasibility study and include, but are not limited to, costs to perform remedial actions and costs of machinery and equipment that are dedicated to the remedial actions and that do not have an alternative use. Such accruals are adjusted as further information develops or circumstances change. We discount environmental liabilities to their present value if payments are fixed or reliably determinable. Expenditures for equipment necessary for environmental issues relating to ongoing operations are capitalized. Estimated recoveries of costs from other parties are recorded on an undiscounted basis as assets when their realization is deemed probable.
Asset Retirement Obligations	Asset Retirement Obligations We recognize liabilities which represent the fair value of a legal obligation to perform asset retirement activities, including those that are conditional on a future event, when the amount can be reasonably estimated. These obligations are related to the required cleanout of our pipelines and terminal tanks and removal of certain above-grade portions of our pipelines situated on right-of-way property.
Revenue Recognition	Revenue Recognition Revenue is measured based on consideration specified in a contract with a customer. The Partnership recognizes revenue when it satisfies a performance obligation by transferring control over a product or by providing services to a customer. Service, Product and Lease Revenues. Revenues for products sold are generally recognized upon delivery of product, which is when title and control of the product is transferred. Transaction prices for these products are typically at market rates for the product at the time of delivery. Service revenues are recognized as crude oil, intermediate and refined products are shipped through, delivered by or stored in our pipelines, trucks, terminals and storage facility assets, as applicable. We do not recognize product revenues for these services, as the product does not represent a promised good in the context of ASC 606, Revenue from Contracts with Customers ("ASC 606"). All service revenues are based on regulated tariff rates or contractual rates. Payment terms require customers to pay shortly after delivery and do not contain significant financing components. Certain agreements for gathering, transportation, storage, terminalling, and offloading with Delek Holdings were considered operating leases under ASC 840, Leases ("ASC 840"). As part of the adoption of ASC 842, we applied the permitted practical expedient to not separate lease and non-lease components under the predominance principle to designated asset classes associated with the provision of logistics services. We have determined that the predominant component of the related agreements currently in effect is the lease component. Therefore, the combined component is accounted for under the applicable lease accounting guidance. Refer to Note 5 for further information. Up-Front payments to Customers. We record up-front payments to customers in accordance with ASC 606. We evaluate the nature of each payment, the rights and obligations under the related contract, and whether the payment meets the definition of an asset. When an asset is recognized for an up-front payment to a customer, the asset is amortized, as a reduction of revenue, in a manner that reflects the pattern and period over which the asset is expected to provide benefit. Revenues Related to Reimbursements. In addition to the agreements noted above, we have cost reimbursement provisions in certain of our agreements with Delek Holdings that provide for reimbursement to the Company for certain costs, including certain capital expenditures. Such reimbursements are recorded in other long-term liabilities and are amortized to revenue over the life of the underlying revenue agreement corresponding to the asset. Cost of Materials and Other and Operating Expenses Cost of materials and other includes (i) all costs of purchased refined products, additives and related transportation of such products, (ii) costs associated with the operation of our trucking assets, which primarily include allocated employee costs and other costs related to fuel, truck leases and repairs and maintenance, (iii) the cost of pipeline capacity leased from a third-party, and (iv) gains and losses related to our commodity hedging activities. Operating expenses include the costs associated with the operation of owned terminals and pipelines and terminalling expense at third-party locations, excluding depreciation and amortization. These costs primarily include outside services, allocated employee costs, repairs and maintenance costs and energy and utility costs. Operating expenses related to the wholesale business are excluded from cost of sales because they primarily relate to costs associated with selling the products through our wholesale business. Depreciation and amortization is separately presented in our consolidated statement of income and disclosed by reportable segment in Note 15.
Deferred Financing Costs	Deferred Financing CostsDeferred financing costs are included in other non-current assets in the accompanying consolidated balance sheets and represent expenses related to issuing and amending our revolving credit facility. Deferred financing costs associated with our 6.750% Senior Notes are included as a reduction to the associated debt balance in the accompanying consolidated balance sheets. These costs represent expenses related to issuing the senior notes. These amounts are amortized ratably over the remaining term of the respective financing and are included in interest expense in the accompanying consolidated statements of income and comprehensive income.
Operating Leases	Leases In accordance with ASC 842-20, Leases - Lessee ("ASC 842-20"), we classify leases with contractual terms longer than twelve months as either operating or finance. Finance leases are generally those leases that are highly specialized or allow us to substantially utilize or pay for the entire asset over its useful life. All other leases are classified as operating leases. We lease primarily transportation equipment. Our leases do not have any outstanding renewal options. Certain leases also include options to purchase the leased equipment. Certain of our lease agreements include rates based on equipment usage. Our lease agreements do not contain any material residual value guarantees or material restrictive covenants. For all leases that include fixed rental rate increases, these are included in our fixed lease payments. Our leases may include variable payments, based on changes on price or other indices, that are expensed as incurred. We calculate the total lease expense for the entire noncancelable lease period, considering renewals for all periods for which it is reasonably certain to be exercised, and record lease expense on a straight-line basis in the accompanying consolidated statements of income. Accordingly, a lease liability is recognized for these leases and is calculated to be the present value of the fixed lease payments, as defined by ASC 842-20, using a discount rate based on our incremental borrowing rate. A corresponding right-of-use asset is recognized based on the lease liability and adjusted for certain costs and prepayments.
Income Taxes	Income Taxes We are not a taxable entity for federal income tax purposes or the income taxes of those states that follow the federal income tax treatment of partnerships. Instead, for purposes of these income taxes, each partner of the Partnership is required to take into account its share of items of income, gain, loss and deduction in computing its federal and state income tax liabilities, regardless of whether cash distributions are made to such partner by the Partnership. The taxable income reportable to each partner takes into account differences between the tax basis and fair market value of our assets and financial reporting bases of assets and liabilities, the acquisition price of such partner's units and the taxable income allocation requirements under the Partnership's Second Amended and Restated Agreement of Limited Partnership, as amended (the "Partnership Agreement"). We are subject to income taxes in certain states that do not follow the federal tax treatment of Partnerships. These taxes are accounted for under the provisions of ASC 740, Income Taxes ("ASC 740"). This statement generally requires the Partnership to record deferred income taxes for the differences between the book and tax bases of its assets and liabilities, which are measured using enacted tax rates and laws that will be in effect when the differences are expected to reverse. Deferred income tax expense or benefit represents the net change during the year in our deferred income tax assets and liabilities, exclusive of the amounts held in other comprehensive income.
Equity based Compensation	Equity Based Compensation Our general partner provides equity-based compensation to officers, directors and employees of our general partner or its affiliates, and certain consultants, affiliates of our general partner or other individuals who perform services for us, which may include unit options, restricted units, phantom units, unit appreciation rights, distribution equivalent rights, other unit-based awards and unit awards. The fair value of our phantom units is determined based on the closing market price of our common units on the grant date. The estimated fair value of our phantom units is amortized over the vesting period using the straight line method. Awards vest over one five
Net Income per Limited Partner Unit	Net Income per Limited Partner Unit Basic net income per unit applicable to limited partners is computed by dividing limited partners’ interest in net income by the weighted-average number of outstanding common units. Prior to August 13, 2020, we had more than one class of participating securities and used the two class method to calculate the net income per unit applicable to the limited partners. The classes of participating units prior to August 13, 2020 consisted of limited partner units, general partner units and IDRs. Pursuant to the IDR Restructuring Transaction, the IDRs were eliminated and the 2.0% general partner economic interest was converted to a non-economic general partner interest. Effective August 13, 2020, the common limited partner units are the only participating security for cash distributions. Refer to Notes 6 and 12 for further discussion.
New Accounting Pronouncements Adopted during 2020	New Accounting Pronouncements Adopted During 2020 ASU 2018-13, Fair Value Measurement - Changes to the Disclosure Requirements for Fair Value Measurement In August 2018, the Financial Accounting Standards Board (the "FASB") issued guidance related to disclosure requirements for fair value measurements. The pronouncement eliminates, modifies and adds disclosure requirements for fair value measurements. The pronouncement is effective for fiscal years, and for interim periods within those fiscal years, beginning after December 15, 2019. We adopted this guidance on January 1, 2020 and the adoption did not have a material impact on our business, financial condition or results of operations. ASU 2016-13, Financial Instruments - Measurement of Credit Losses on Financial Instruments In June 2016, the FASB issued guidance requiring the measurement of all expected credit losses for financial assets held at the reporting date based on historical experience, current conditions, and reasonable and supportable forecasts. Organizations will now use forward-looking information to better inform their credit loss estimates. This guidance is effective for interim and annual periods beginning after December 15, 2019. We adopted this guidance on January 1, 2020 using the modified retrospective approach as of the adoption date. The adoption did not have a material impact on the Partnership’s operating results, financial position or disclosures. ASU 2018-15, Intangible - Customer's Accounting for Implementation Costs Incurred in a Cloud Computing Arrangement That Is a Service Contract In August 2018, the FASB issued guidance related to customers' accounting for implementation costs incurred in a cloud computing arrangement that is considered a service contract. This pronouncement aligns the requirements for capitalizing implementation costs in such arrangements with the requirements for capitalizing implementation costs incurred to develop or obtain internal-use software. This pronouncement is effective for fiscal years, and for interim periods within those fiscal years, beginning after December 15, 2019. Entities can choose to adopt the new guidance prospectively or retrospectively. We adopted this guidance on January 1, 2020 and elected the prospective method. The adoption did not have a material impact on the Partnership's financial condition or results of operations. New Accounting Pronouncements Not Yet Adopted ASU 2019-12, Simplifying the Accounting for Income Taxes In December 2019, the FASB issued guidance which is intended to simplify various aspects related to accounting for income taxes, eliminate certain exceptions within Accounting Standard Codification ("ASC") 740 and clarify certain aspects of the current guidance to promote consistency among reporting entities. The pronouncement is effective for fiscal years, and for interim periods within those fiscal years, beginning after December 15, 2020. We expect to adopt this guidance on the effective date and do not expect adopting this new guidance will have a material impact on our business, financial condition and results of operations. ASU 2020-01, Investments—Equity Securities (Topic 321), Investments—Equity Method and Joint Ventures (Topic 323), and Derivatives and Hedging (Topic 815)—Clarifying the Interactions between Topic 321, Topic 323, and Topic 815 In January 2020, the FASB issued ASU 2020-01 which is intended to clarify interactions between the guidance to account for certain equity securities under Topics 321, 323 and 815, and improve current GAAP by reducing diversity in practice and increasing comparability of accounting. The pronouncement is effective for fiscal years and interim periods within those fiscal years beginning after December 15, 2020. We expect to adopt this guidance on the effective date and do not expect adopting this new guidance will have a material impact on our business, financial condition and results of operations. ASU 2020-04, Facilitation of the Effects of Reference Rate Reform on Financial Reporting (Topic 848) In March 2020, the FASB issued an amendment which is intended to provide temporary optional expedients and exceptions to GAAP guidance on contracts, hedge accounting and other transactions affected by the expected market transition from the London Interbank Offered Rate (LIBOR) and other interbank rates. This guidance is effective for all entities any time beginning on March 12, 2020 through December 31, 2022 and may be applied from the beginning of an interim period that includes the issuance date of the ASU. The Partnership is currently evaluating the impact this guidance may have on its consolidated financial statements and related disclosures.

Accounting Policies (Tables)

Accounting Policies (Tables)	12 Months Ended
	Dec. 31, 2020
Accounting Policies [Abstract]
Property, Plant and Equipment	Depreciation is computed using the straight-line method over management’s estimated useful lives of the related assets. The estimated useful lives are as follows: Years Buildings and building improvements 15-40 Pipelines, tanks and terminals 15-40 Asset retirement obligation assets 15-50 Other equipment 3-15 Property, plant and equipment, at cost, consist of the following (in thousands): December 31, 2020 2019 Land $ 14,533 $ 4,458 Building and building improvements 2,742 1,853 Pipelines, tanks and terminals 606,116 427,287 Asset retirement obligation assets 2,073 2,073 Other equipment 30,803 16,634 Construction in process 36,015 9,020 Property, plant and equipment 692,282 461,325 Less: accumulated depreciation (227,470) (166,281) Property, plant and equipment, net $ 464,812 $ 295,044 Property, plant and equipment, accumulated depreciation and depreciation expense by reporting segment as of and for the years ended December 31, 2020 and 2019 are as follows (in thousands): As of and For the Year Ended December 31, 2020 Pipelines and Transportation Wholesale Marketing and Terminalling Consolidated Property, plant and equipment $ 580,631 $ 111,651 $ 692,282 Less: accumulated depreciation (176,020) (51,450) (227,470) Property, plant and equipment, net $ 404,611 $ 60,201 $ 464,812 Depreciation expense $ 27,682 $ 8,049 $ 35,731 As of and For the Year Ended December 31, 2019 Pipelines and Transportation Wholesale Marketing and Terminalling Consolidated Property, plant and equipment $ 354,429 $ 106,896 $ 461,325 Less: Accumulated depreciation (125,771) (40,510) (166,281) Property, plant and equipment, net $ 228,658 $ 66,386 $ 295,044 Depreciation expense $ 20,803 $ 5,898 $ 26,701
Schedule of Change in Asset Retirement Obligation	The reconciliation of the beginning and ending carrying amounts of asset retirement obligations as of December 31, 2020 and 2019 is as follows (in thousands): December 31, 2020 2019 Beginning balance $ 5,588 $ 5,191 Accretion expense 427 397 Ending balance $ 6,015 $ 5,588

Related Party Transactions (Tab

Related Party Transactions (Tables)	12 Months Ended
	Dec. 31, 2020
Related Party Transactions [Abstract]
Commercial Agreements	Our material commercial agreements with Delek Holdings include the following: Asset/Operation Initiation Date Initial/Maximum Term (years) (1) Service Minimum Throughput Commitment (bpd) Fee (/bbl) El Dorado Assets and El Dorado Gathering System (2) : Crude Oil Pipelines (non-gathered) November 2012 5 / 15 Crude oil and refined products transportation 46,000 (3) $1.05 (4) Refined Products Pipelines November 2012 5 / 15 40,000 $0.12 El Dorado Gathering System November 2012 5 / 15 Crude oil gathering 14,000 $2.83 (4) East Texas Crude Logistics System (2) : Crude Oil Pipelines November 2012 5 / 15 Crude oil transportation and storage 35,000 $0.50 (5) Storage November 2012 5 / 15 N/A $309,892/month East Texas Marketing November 2012 10 (6) Marketing products for Tyler Refinery 50,000 $0.82 (6) Big Sandy Terminal: (2) Refined Products Transportation November 2012 5 / 15 Refined products transportation, dedicated terminalling services and storage for the Tyler Refinery 5,000 $0.62 Terminalling November 2012 5 / 15 5,000 $0.62 Storage November 2012 5 / 15 N/A $61,923/month Tyler Throughput and Tankage (2) : Refined Products Throughput July 2013 8 / 16 Dedicated Terminalling and storage 50,000 $0.38 Storage July 2013 8 / 16 N/A $894,648/month Memphis Pipeline June 1, 2018 5 Refined Products Transportation 11,000 $1.28 El Dorado Throughput and Tankage (2) : Refined Products Throughput February 2014 8 / 16 Dedicated terminalling and storage 11,000 $0.54 Storage February 2014 8 / 16 N/A $1,400,478/month El Dorado Assets Throughput: Light Crude Throughput March 2015 9 / 15 Dedicated Offloading Services N/A (7) $1.08 Heavy Crude Throughput March 2015 9 / 15 Dedicated Offloading Services N/A (7) $2.43 Pipelines, Storage and Throughput Facilities Agreement (Big Spring Logistics Assets): Crude Oil and Refined Products Throughput March 1, 2018 10 / 15 Pipeline throughput 104,300 $0.05 Rail Offloading March 1, 2018 10 / 15 Offloading services 4,500 $0.41 Terminalling March 1, 2018 10 / 15 Dedicated Terminalling 29,250 $0.68 Storage March 1, 2018 10 / 15 Storage NA $1,411,406/month Asphalt Services Agreement (Big Spring Logistics Assets): Terminalling March 1, 2018 10 / 15 Dedicated Asphalt Terminalling and Storage 1,020 to 2,380 based on seasonality $8.52 Storage March 1, 2018 10 / 15 N/A $468,703/month Marketing Agreement (Big Spring Logistics Assets): Marketing Services March 1, 2018 10 / 15 Dedicated Marketing and Selling 65,000 $0.51 - $0.73 Throughput and Deficiency Agreement (Big Spring Gathering Assets) Gathering System March 31, 2020 10 / 20 Gathering and Transportation Services 120,000 $0.70 Re-delivery System March 30, 2020 10 / 20 50,000 $0.25 Pipelines, Throughput and Offloading Facilities Agreement (Big Spring Logistics Assets) Fintex / Magellen Pipeline April 1, 2020 2 Refined Products 20,000 $0.63 Crude Oil Offloading January 1, 2020 2 Crude Oil Offloading 15,120 $0.90 Storage April 1, 2020 2 Storage N/A $240,000/month LPG Rack January 1, 2020 2 Truck Unloading Facility 4,500 $5.00 Transportation Services Agreement Trucking Services May 1, 2020 10 / 14 Transportation Services N/A $39,000,000/Minimum Annual Revenue Commitment (1) Maximum term gives effect to the extension of the commercial agreement pursuant to the terms thereof. (2) The current term of the agreement was extended through March 31, 2024 in connection with the amendment and restatement of the DKL Credit Facility (as defined in Note 11). While the current terms of the agreement were extended, the upcoming renewal terms were reduced. Therefore, the overall duration of the maximum term remains unchanged. (3) Excludes volumes gathered on the El Dorado Gathering System (the "El Dorado Gathering System"). (4) Volumes gathered on the El Dorado Gathering System will not be subject to an additional fee for transportation on our El Dorado Assets (the "El Dorado Assets") to the El Dorado Refinery. (5) For any volumes in excess of 50,000 bpd, the throughput fee will be $0.74/bbl. (6) For any volumes in excess of 50,000 bpd, the throughput fee will be $0.78/bbl. Following the primary term, the marketing agreement automatically renews for a successive one-year term, unless either party provides notice of non-renewal 10 months prior to the expiration of the then-current term. The initial primary term for the marketing agreement has been extended through 2027.
Purchases and Expense Transactions From Affiliates	A summary of revenue, purchases from affiliates and expense transactions with Delek Holdings and its affiliates are as follows (in thousands): Year Ended December 31, 2020 2019 2018 Revenues $ 382,666 $ 261,014 $ 240,809 Purchases from Affiliates $ 205,581 $ 285,539 $ 349,089 Operating and maintenance expenses $ 43,985 $ 49,904 $ 36,182 General and administrative expenses $ 12,557 $ 7,977 $ 8,250

Revenues (Tables)

Revenues (Tables)	12 Months Ended
	Dec. 31, 2020
Revenue from Contract with Customer [Abstract]
Disaggregation of Revenue	The following table represents a disaggregation of revenue for each reportable segment for the periods indicated (in thousands): Year Ended December 31, 2020 Pipelines and Transportation Wholesale Marketing and Terminalling Consolidated Service Revenue - Third Party $ 17,596 $ 634 $ 18,230 Service Revenue - Affiliate 17,768 33,632 51,400 Product Revenue - Third Party — 162,522 162,522 Product Revenue - Affiliate — 71,178 71,178 Lease Revenue - Affiliate (1) 216,105 43,983 260,088 Total Revenue $ 251,469 $ 311,949 $ 563,418 (1) Net of $7.2 million of amortization expense for the year ended December 31, 2020, related to a customer contract intangible asset recorded in the wholesale marketing and terminalling segment. Year Ended December 31, 2019 Pipelines and Transportation Wholesale Marketing and Terminalling Consolidated Service Revenue - Third Party $ 23,107 $ 623 $ 23,730 Service Revenue - Affiliate — 35,208 35,208 Product Revenue - Third Party — 299,248 299,248 Product Revenue - Affiliate — 31,941 31,941 Lease Revenue - Affiliate (1) 155,211 38,654 193,865 Total Revenue $ 178,318 $ 405,674 $ 583,992 (1) Net of $7.2 million of amortization expense for the year ended December 31, 2019, related to a customer contract intangible asset recorded in the wholesale marketing and terminalling segment.
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction	Our unfulfilled performance obligations as of December 31, 2020 were as follows (in thousands): 2021 $ 269,181 2022 251,043 2023 241,631 2024 166,697 2025 and thereafter 589,715 Total expected revenue on remaining performance obligations $ 1,518,267

Net Income Per Unit (Tables)

Net Income Per Unit (Tables)	12 Months Ended
	Dec. 31, 2020
Earnings Per Share [Abstract]
Net Income Per Unit	The calculation of net income per unit is as follows (dollars in thousands, except units and per unit amounts): Year Ended December 31, 2020 2019 2018 Net income attributable to partners $ 159,256 $ 96,749 $ 90,182 Less: General partner's distribution (including IDRs) (1) 18,618 33,492 25,777 Less: Limited partners' distribution 127,070 83,873 76,113 Earning in excess (deficit) of distributions $ 13,568 $ (20,616) $ (11,708) General partner's earnings: Distributions (including IDRs) (1) $ 18,618 $ 33,492 $ 25,777 Allocation of earnings in excess (deficit) of distributions 106 (412) (234) Total general partner's earnings $ 18,724 $ 33,080 $ 25,543 Limited partners' earnings on common units: Distributions $ 127,070 $ 83,873 $ 76,113 Allocation of earnings in excess (deficit) of distributions 13,462 (20,204) (11,474) Total limited partners' earnings on common units $ 140,532 $ 63,669 $ 64,639 Weighted average limited partner units outstanding: Common units - basic 33,594,284 24,413,294 24,390,286 Common units - diluted 33,597,418 24,418,641 24,396,881 Net income per limited partner unit: Common - basic $ 4.18 $ 2.61 $ 2.65 Common - diluted (2) $ 4.18 $ 2.61 $ 2.65 (1) Prior to August 13, 2020, 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. In connection with the IDR Restructuring Transaction on August 13, 2020, the IDRs were eliminated and the general partner interest became a non-economic general partner interest. See Note 12 for further discussion related to IDRs. (2) There were 5,201 and 1,776 outstanding common unit equivalents excluded from the diluted earnings per unit calculation during both years ended December 31, 2020

Property, Plant and Equipment (

Property, Plant and Equipment (Tables)	12 Months Ended
	Dec. 31, 2020
Property, Plant and Equipment [Abstract]
Property, Plant and Equipment	Depreciation is computed using the straight-line method over management’s estimated useful lives of the related assets. The estimated useful lives are as follows: Years Buildings and building improvements 15-40 Pipelines, tanks and terminals 15-40 Asset retirement obligation assets 15-50 Other equipment 3-15 Property, plant and equipment, at cost, consist of the following (in thousands): December 31, 2020 2019 Land $ 14,533 $ 4,458 Building and building improvements 2,742 1,853 Pipelines, tanks and terminals 606,116 427,287 Asset retirement obligation assets 2,073 2,073 Other equipment 30,803 16,634 Construction in process 36,015 9,020 Property, plant and equipment 692,282 461,325 Less: accumulated depreciation (227,470) (166,281) Property, plant and equipment, net $ 464,812 $ 295,044 Property, plant and equipment, accumulated depreciation and depreciation expense by reporting segment as of and for the years ended December 31, 2020 and 2019 are as follows (in thousands): As of and For the Year Ended December 31, 2020 Pipelines and Transportation Wholesale Marketing and Terminalling Consolidated Property, plant and equipment $ 580,631 $ 111,651 $ 692,282 Less: accumulated depreciation (176,020) (51,450) (227,470) Property, plant and equipment, net $ 404,611 $ 60,201 $ 464,812 Depreciation expense $ 27,682 $ 8,049 $ 35,731 As of and For the Year Ended December 31, 2019 Pipelines and Transportation Wholesale Marketing and Terminalling Consolidated Property, plant and equipment $ 354,429 $ 106,896 $ 461,325 Less: Accumulated depreciation (125,771) (40,510) (166,281) Property, plant and equipment, net $ 228,658 $ 66,386 $ 295,044 Depreciation expense $ 20,803 $ 5,898 $ 26,701

Other Intangible Assets (Tables

Other Intangible Assets (Tables)	12 Months Ended
	Dec. 31, 2020
Goodwill and Intangible Assets Disclosure [Abstract]
Schedule of Intangible Assets	Our identifiable intangible assets are as follows (in thousands): Useful Accumulated As of December 31, 2020 Life Gross Amortization Net Intangible assets subject to amortization: Marketing contract 20 144,219 (20,431) 123,788 Intangible assets not subject to amortization: Rights-of-way assets Indefinite 36,316 36,316 Total $ 180,535 $ (20,431) $ 160,104 Useful Accumulated As of December 31, 2019 Life Gross Amortization Net Intangible assets subject to amortization: Marketing contract 20 144,219 (13,220) $ 130,999 Intangible assets not subject to amortization: Rights-of-way assets Indefinite 15,597 15,597 Total $ 159,816 $ (13,220) $ 146,596

Long-Term Obligations (Tables)

Long-Term Obligations (Tables)	12 Months Ended
	Dec. 31, 2020
Debt Disclosure [Abstract]
Schedule of Maturities of Long-term Debt	Principal maturities of the Partnership's existing third party debt instruments for the next five years and thereafter are as follows as of December 31, 2020 (in thousands): 2021 2022 2023 2024 2025 Thereafter Total DKL Credit Facility $ — $ — $ 746,600 $ — $ — $ — $ 746,600 2025 Notes $ — $ — $ — $ — $ 250,000 $ — $ 250,000

Equity (Tables)

Equity (Tables)	12 Months Ended
	Dec. 31, 2020
Equity [Abstract]
Schedule of Capital Units	The table below summarizes the changes in the number of units outstanding from December 31, 2018 through December 31, 2020. Common - Public Common - Delek Holdings 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 — — 434 434 Unit-based compensation awards (1) 21,220 — — 21,220 Balance at December 31, 2018 9,109,807 15,294,046 498,038 24,901,891 General partner units issued to maintain 2% interest — — 444 444 Unit-based compensation awards (1) 21,772 — — 21,772 Balance at December 31, 2019 9,131,579 15,294,046 498,482 24,924,107 General partner units issued to maintain 2% interest — — 102,196 102,196 Unit-based compensation awards (1) 17,711 — — 17,711 Big Spring Gathering Assets Acquisition equity issuance — 5,000,000 — 5,000,000 Delek Holdings unit purchases from public (451,822) 451,822 — — General Partner units converted to non-economic general partner interest — — (600,678) (600,678) Common limited partner units issued in IDR Restructuring Transaction — 14,000,000 — 14,000,000 Balance at December 31, 2020 8,697,468 34,745,868 — 43,443,336 (1) Unit-based compensation awards are presented net of 926 and 598 units withheld for taxes as of December 31, 2020 and 2018, respectively. There were no units withheld for taxes as of December 31, 2019.
Schedule of Calculation of Net Income Applicable to Partners	The following table presents the allocation of the general partner's interest in net income (in thousands, except percentage of ownership interest): Year Ended December 31, 2020 2019 2018 Net income attributable to partners $ 159,256 $ 96,749 $ 90,182 Less: General partner's IDRs (17,632) (31,781) (24,224) Net income available to partners $ 141,624 $ 64,968 $ 65,958 General partner's ownership interest 2.0 % 2.0 % 2.0 % General partner's allocated interest in net income 1,092 1,299 1,319 General partner's IDRs 17,632 31,781 24,224 Total general partner's interest in net income $ 18,724 $ 33,080 $ 25,543
Schedule of Distributions Made to Members or Limited Partners, by Distribution	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 December 31, 2018 $ 0.810 $ 3.24 $ 26,949 February 12, 2019 February 4, 2019 March 31, 2019 $ 0.820 $ 3.28 $ 27,438 May 14, 2019 May 7, 2019 June 30, 2019 $ 0.850 $ 3.40 $ 28,914 August 13, 2019 August 5, 2019 September 30, 2019 $ 0.880 $ 3.52 $ 30,379 November 12, 2019 November 4, 2019 December 31, 2019 $ 0.885 $ 3.54 $ 30,634 February 12, 2020 February 4, 2020 March 31, 2020 $ 0.890 $ 3.56 $ 30,878 May 12, 2020 May 5, 2020 June 30, 2020 $ 0.900 $ 3.60 $ 35,969 August 12, 2020 August 7, 2020 September 30, 2020 $ 0.905 $ 3.62 $ 39,308 November 12, 2020 November 6, 2020 December 31, 2020 $ 0.910 $ 3.64 $ 39,533 February 9, 2021 February 2, 2021 The allocations of total quarterly cash distributions made to general and limited partners for the years ended December 31, 2020, 2019 and 2018 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): Year Ended December 31, 2020 2019 2018 General partner's distributions: General partner's distributions $ 986 $ 1,711 $ 1,553 General partner's IDRs 17,632 31,781 24,224 Total general partner's distributions 18,618 33,492 25,777 Limited partners' distributions: Common limited partners' distributions 127,070 83,873 76,113 Total cash distributions $ 145,688 $ 117,365 $ 101,890 Cash distributions per limited partner unit $ 3.605 $ 3.440 $ 3.120

Equity Method Investments (Tabl

Equity Method Investments (Tables)	12 Months Ended
	Dec. 31, 2020
Equity Method Investments and Joint Ventures [Abstract]
Equity Method Investments	Summarized financial information for Red River on a 100% basis is shown below (in thousands): Year Ended Year Ended December 31, 2020 December 31, 2019 Current Assets $ 13,488 $ 9,278 Non-current Assets $ 413,259 $ 381,778 Current liabilities $ 7,789 $ 8,291 Year Ended For the period December 31, 2020 April 24, 2019 - December 31, 2019 Revenues $ 51,001 $ 38,352 Gross profit $ 31,103 $ 25,919 Operating income $ 30,382 $ 25,497 Net income $ 30,404 $ 25,548 Combined summarized financial information for these two equity method investees on a 100% basis is shown below (in thousands): Year Ended Year Ended December 31, 2020 December 31, 2019 Current assets $ 20,763 $ 29,476 Non-current assets $ 253,862 $ 262,300 Current liabilities $ 1,496 $ 6,391 Non-current liabilities $ — $ 8 Year Ended Year Ended Year Ended December 31, 2020 December 31, 2019 December 31, 2018 Revenues $ 55,482 $ 48,703 $ 35,050 Gross profit $ 36,904 $ 30,473 $ 17,690 Operating income $ 34,951 $ 28,503 $ 12,909 Net Income $ 34,977 $ 28,601 $ 15,701

Segment Data (Tables)

Segment Data (Tables)	12 Months Ended
	Dec. 31, 2020
Segment Reporting [Abstract]
Schedule of Segment Reporting Information, by Segment	The following is a summary of business segment operating performance as measured by contribution margin for the periods indicated (in thousands): Year Ended December 31, 2020 2019 2018 Pipelines and Transportation Net revenues: Affiliate $ 233,873 $ 155,211 $ 138,418 Third party 17,596 23,107 15,149 Total pipelines and transportation 251,469 178,318 153,567 Cost of materials and other 45,934 22,826 19,878 Operating expenses (excluding depreciation and amortization) 42,267 54,827 39,934 Segment contribution margin $ 163,268 $ 100,665 $ 93,755 Capital spending (1) $ 7,631 $ 6,600 $ 6,840 Wholesale Marketing and Terminalling Net revenues: Affiliate (2) $ 148,793 $ 105,803 $ 102,391 Third party 163,156 299,871 401,651 Total wholesale marketing and terminalling 311,949 405,674 504,042 Cost of materials and other 223,160 313,647 409,183 Operating expenses (excluding depreciation and amortization) 14,012 19,330 18,810 Segment contribution margin $ 74,777 $ 72,697 $ 76,049 Capital spending (1) $ 7,818 $ 3,387 $ 4,725 Consolidated Net revenues: Affiliate $ 382,666 $ 261,014 $ 240,809 Third party 180,752 322,978 416,800 Total Consolidated 563,418 583,992 657,609 Cost of materials and other 269,094 336,473 429,061 Operating expenses (excluding depreciation and amortization presented below) 56,279 74,157 58,744 Contribution margin 238,045 173,362 169,804 General and administrative expenses 22,587 20,815 17,166 Depreciation and amortization 35,731 26,701 25,990 Other operating (income) expense, net (66) 34 891 Operating income $ 179,793 $ 125,812 $ 125,757 Capital spending (1) $ 15,449 $ 9,987 $ 11,565 (1) Capital spending excludes transaction costs capitalized in the amount of $0.4 million that relate to the Big Spring Logistics Assets Acquisition for the year ended December 31, 2018. Additionally, capital spending for the year ended December 31, 2020, excludes transaction costs capitalized in the amount of $0.3 million that relate to the Trucking Assets Acquisition and $0.7 million that relate to the Big Spring Gathering Assets Acquisition. (2) Affiliate revenue for the wholesale marketing and terminalling segment is presented net of amortization expense pertaining to the Marketing Contract Intangible Acquisition. See Note 3 for additional information. The following table summarizes the total assets for each segment as of December 31, 2020 and 2019 (in thousands). Assets for each segment includes property, plant and equipment, equity method investments, intangible assets and inventory. Year Ended December 31, 2020 2019 Pipelines and transportation $ 723,317 $ 509,666 Wholesale marketing and terminalling 206,918 214,259 Other 26,182 20,522 Total assets $ 956,417 $ 744,447

Income Taxes (Tables)

Income Taxes (Tables)	12 Months Ended
	Dec. 31, 2020
Income Tax Disclosure [Abstract]
Schedule of Effective Income Tax Rate Reconciliation	The difference between the actual income tax expense and the tax expense computed by applying the statutory federal income tax rate to income before income taxes is attributable to the following (in thousands): Year Ended December 31, 2020 2019 2018 State income taxes $ 223 $ 967 $ 534 Income tax expense $ 223 $ 967 $ 534
Schedule of Components of Income Tax Expense (Benefit)	Income tax expense (benefit) is as follows (in thousands): Year Ended December 31, 2020 2019 2018 Current $ (178) $ 471 $ 382 Deferred $ 401 496 152 Total $ 223 $ 967 $ 534

Leases (Tables)

Leases (Tables)	12 Months Ended
	Dec. 31, 2020
Leases [Abstract]
Lease, Cost	The following table presents additional information related to our operating leases in accordance ASC 842: Year Ended December 31, Year Ended December 31, (in thousands) 2020 2019 Lease Cost (1) Operating lease cost $ 7,478 $ 4,643 Short-term lease cost (2) 1,852 850 Variable lease costs 1,002 — Total lease cost $ 10,332 $ 5,493 Other Information (1) Cash paid for amounts included in the measurement of lease liabilities: Operating cash flows from operating leases $ (7,478) $ (4,643) Leased assets obtained in exchange for new operating lease liabilities $ 26,528 $ 1,285 Leased assets obtained in exchange for new financing lease liabilities $ 5,562 $ — December 31, 2020 December 31, 2019 Weighted-average remaining lease term (years) for operating leases 3.56 4.00 Weighted-average discount rate (3) operating leases 6.0 % — % Weighted-average remaining lease term (years) for finance lease 2.92 0.00 Weighted-average discount rate (3) finance lease 1.8 % — % (1) Includes an immaterial amount of financing lease cost. (2) Includes an immaterial amount of variable lease cost. (3)
Maturities of Operating Lease Liabilities	The following is an estimate of the maturity of our lease liabilities for operating leases having remaining noncancellable terms in excess of one year as of December 31, 2020 (in thousands) under ASC 842: 2021 $ 7,989 2022 9,896 2023 6,317 2024 5,698 2025 3,601 Thereafter 1,736 Total lease payments $ 35,237 Less: Interest 11,128 Present value of lease liabilities $ 24,109
Maturities of Finance Lease Liabilities	The following is an estimate of the maturity of our lease liabilities for financing lease having remaining noncancellable terms in excess of one year as of December 31, 2020 (in thousands) under ASC 842: 2021 $ 2,060 2022 1,902 2023 1,585 Total lease payment $ 5,547 Less: Interest 136 Present values of lease liabilities $ 5,411

Selected Quarterly Financial _2

Selected Quarterly Financial Data (Unaudited) (Tables)	12 Months Ended
	Dec. 31, 2020
Selected Quarterly Financial Information [Abstract]
Schedule of Quarterly Financial Data	The quarterly financial information summarized below has been prepared by management and is unaudited (in thousands, except per unit data). For the Three Month Periods Ended March 31, 2020 June 30, 2020 September 30, 2020 December 31, 2020 Net revenues $ 163,401 $ 117,637 $ 142,268 $ 140,112 Operating income $ 35,042 $ 47,881 $ 51,765 $ 45,105 Net income $ 27,796 $ 44,415 $ 46,328 $ 40,717 Limited partners' interest in net income $ 18,719 $ 34,768 $ 46,328 $ 40,717 Net income per limited partner unit: Common - basic $ 0.76 $ 1.18 $ 1.26 $ 0.94 Common - diluted $ 0.76 $ 1.18 $ 1.26 $ 0.94 For the Three Month Periods Ended March 31, 2019 June 30, 2019 September 30, 2019 December 31, 2019 Net revenues $ 152,483 $ 155,342 $ 137,556 $ 138,610 Operating income $ 29,111 $ 32,256 $ 34,729 $ 29,715 Net income $ 19,696 $ 24,885 $ 30,530 $ 21,638 Limited partners' interest in net income $ 12,426 $ 16,806 $ 21,635 $ 12,804 Net income per limited partner unit: Common - basic $ 0.51 $ 0.69 $ 0.89 $ 0.52 Common - diluted $ 0.51 $ 0.69 $ 0.89 $ 0.52

General (Details)

General (Details) shares in Millions, $ in Millions	Aug. 13, 2020USD ($)shares
Line of Credit | Revolving Credit Facility | DKL Revolver | Fifth Third Bank
Related Party Transaction [Line Items]
Cash consideration received | $	$ 45
General Partnership
Related Party Transaction [Line Items]
General partner economic interest, percent	2.00%
Delek US Holdings, Inc. | Delek Logistics
Related Party Transaction [Line Items]
Business combination, consideration transferred equity interests issues and issuable, shares | shares	14
Delek US Holdings, Inc. | General Partnership
Related Party Transaction [Line Items]
Business acquisition, percentage of voting interests acquired	5.20%

Accounting Policies - Segment R

Accounting Policies - Segment Reporting and Accounts Receivable (Details)	12 Months Ended
	Dec. 31, 2020USD ($)customersegment	Dec. 31, 2019USD ($)customer
Concentration Risk [Line Items]
Number of reportable segments | segment	2
Allowance for doubtful accounts | $	$ 0	$ 0
Accounts Receivable | Customer Concentration Risk
Concentration Risk [Line Items]
Number of customers | customer	1	1
Concentration risk, percentage	49.90%	52.50%

Accounting Policies - Inventory

Accounting Policies - Inventory (Details)	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019
Supplier Concentration Risk | Inventory purchased | Wholesale Marketing and Terminalling | Delek
Concentration Risk [Line Items]
Concentration risk, percentage	91.80%	78.10%

Accounting Policies - Intangibl

Accounting Policies - Intangible Assets (Details)	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019
Marketing contract
Acquired Finite-Lived Intangible Assets [Line Items]
Estimated useful life (years)	20 years	20 years

Accounting Policies - Property,

Accounting Policies - Property, Plant and Equipment (Details)	12 Months Ended
	Dec. 31, 2020
Minimum | Buildings and building improvements
Estimated useful life (years)	15 years
Minimum | Pipelines, tanks and terminals
Estimated useful life (years)	15 years
Minimum | Asset retirement obligation assets
Estimated useful life (years)	15 years
Minimum | Other equipment
Estimated useful life (years)	3 years
Maximum | Buildings and building improvements
Estimated useful life (years)	40 years
Maximum | Pipelines, tanks and terminals
Estimated useful life (years)	40 years
Maximum | Asset retirement obligation assets
Estimated useful life (years)	50 years
Maximum | Other equipment
Estimated useful life (years)	15 years

Accounting Policies - Asset Ret

Accounting Policies - Asset Retirement Obligations (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Asset Retirement Obligation, Roll Forward Analysis [Roll Forward]
Beginning balance	$ 5,588	$ 5,191
Accretion expense	427	397	$ 359
Ending balance	$ 6,015	$ 5,588	$ 5,191

Accounting Policies - Deferred

Accounting Policies - Deferred Financing Costs (Details)	Dec. 31, 2020	May 23, 2017
Senior Notes | 2025 Notes
Debt Instrument [Line Items]
Debt instrument, interest rate, stated percentage	6.75%	6.75%

Accounting Policies - Equity Ba

Accounting Policies - Equity Based Compensation (Details)	12 Months Ended
	Dec. 31, 2020
Minimum
Accounting Policies [Abstract]
Award vesting period	1 year
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]
Award vesting period	1 year
Maximum
Accounting Policies [Abstract]
Award vesting period	5 years
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]
Award vesting period	5 years

Accounting Policies - Net Incom

Accounting Policies - Net Income per Limited Partner Unit (Details)	Aug. 13, 2020
Delek Logistics G P
Net income per unit [Line Items]
General partner economic interest, percent	2.00%

Acquisitions (Details)

Acquisitions (Details) $ / shares in Units, $ in Thousands	May 01, 2020USD ($)Truck_Trailer	Mar. 31, 2020USD ($)storage_tankmibbl$ / sharesshares	Mar. 01, 2018USD ($)storage_tankunderground_saltwell	Dec. 31, 2020USD ($)shares	Dec. 31, 2019USD ($)	Dec. 31, 2018USD ($)
Business Acquisition [Line Items]
Big Spring Gathering Assets Acquisition equity issuance | shares				5,000,000
Intangible assets				$ 160,104	$ 146,596
Delek Trucking
Business Acquisition [Line Items]
Purchase price of asset acquisition	$ 48,000
Number of trucks and trailers | Truck_Trailer	150
Asset acquisition, carry value of assets acquired	$ 13,300
Asset acquisition, carry value of assets acquired, owned assets	500
Asset acquisition, carry value of assets acquired, right-of-use assets	12,800
Asset acquisition, transaction cost	$ 300
Capitalized acquisition costs				300
Big Spring Logistic Assets
Business Acquisition [Line Items]
Purchase price of asset acquisition			$ 170,800
Number of storage tanks | storage_tank			70
Number of underground salt wells | underground_saltwell			4
Excess of cash paid over carrying value			$ 98,800
Carrying value of assets acquired			72,000
Assumed asset retirement obligation			800
Capitalized acquisition costs			400			$ 400
Intangible assets			$ 144,200
Amortization period			20 years
Big Spring Gathering Asset
Business Acquisition [Line Items]
Purchase price of asset acquisition		$ 100,000
Asset acquisition, carry value of assets acquired		209,500
Asset acquisition, transaction cost		$ 700
Big Spring Gathering Assets Acquisition equity issuance | shares		5,000,000
Number of miles of gathering systems | mi		200
Number of storage tanks | storage_tank		65
Total storage of terminals | bbl		650,000
Asset acquisition, equity interest transferred as consideration, market price | $ / shares		$ 9.10
Asset acquisition, equity interest transferred as consideration, value		$ 109,500
Capitalized acquisition costs				$ 700

Related Party Transactions - Co

Related Party Transactions - Commercial Agreements (Details) - Delek

May 01, 2020USD ($)

Apr. 01, 2020USD ($)bbl$ / bbl

Mar. 31, 2020bbl$ / bbl

Mar. 30, 2020bbl$ / bbl

Jan. 01, 2020bbl$ / bbl

Jun. 01, 2018bbl$ / bbl

Mar. 01, 2018USD ($)bbl$ / bbl

Mar. 31, 2015USD ($)$ / bbl

Feb. 28, 2014USD ($)bbl$ / bbl

Jul. 31, 2013USD ($)bbl$ / bbl

Nov. 30, 2012USD ($)bbl$ / bbl

Dec. 31, 2020

Minimum

Related Party Transaction [Line Items]

Term of agreement (years)

5 years

Maximum

Related Party Transaction [Line Items]

Term of agreement (years)

10 years

Lion Pipeline System and Gathering System | Crude Oil Pipeline

Related Party Transaction [Line Items]

Minimum throughput commitment (bpd) | bbl

46,000

Throughput commitment tariff rate (dollars per barrel)

1.05

Lion Pipeline System and Gathering System | Crude Oil Pipeline | Minimum

Related Party Transaction [Line Items]

Term of agreement (years)

5 years

Lion Pipeline System and Gathering System | Crude Oil Pipeline | Maximum

Related Party Transaction [Line Items]

Term of agreement (years)

15 years

Lion Pipeline System and Gathering System | Refined Product Pipeline

Related Party Transaction [Line Items]

Minimum throughput commitment (bpd) | bbl

40,000

Throughput commitment tariff rate (dollars per barrel)

0.12

Lion Pipeline System and Gathering System | Refined Product Pipeline | Minimum

Related Party Transaction [Line Items]

Term of agreement (years)

5 years

Lion Pipeline System and Gathering System | Refined Product Pipeline | Maximum

Related Party Transaction [Line Items]

Term of agreement (years)

15 years

Lion Pipeline System and Gathering System | Gathering Assets

Related Party Transaction [Line Items]

Minimum throughput commitment (bpd) | bbl

14,000

Throughput commitment tariff rate (dollars per barrel)

2.83

Lion Pipeline System and Gathering System | Gathering Assets | Minimum

Related Party Transaction [Line Items]

Term of agreement (years)

5 years

Lion Pipeline System and Gathering System | Gathering Assets | Maximum

Related Party Transaction [Line Items]

Term of agreement (years)

15 years

East Texas Crude Logistics System

Related Party Transaction [Line Items]

Throughput volume subject to additional fee (bpd) | bbl

50,000

Throughput commitment rate, additional for excess barrels (dollars per barrel)

0.74

East Texas Crude Logistics System | Crude Oil Pipeline

Related Party Transaction [Line Items]

Minimum throughput commitment (bpd) | bbl

35,000

Throughput commitment tariff rate (dollars per barrel)

0.50

East Texas Crude Logistics System | Crude Oil Pipeline | Minimum

Related Party Transaction [Line Items]

Term of agreement (years)

5 years

East Texas Crude Logistics System | Crude Oil Pipeline | Maximum

Related Party Transaction [Line Items]

Term of agreement (years)

15 years

East Texas Crude Logistics System | Storage

Related Party Transaction [Line Items]

Minimum monthly storage fee revenue, amount | $

$ 309,892

East Texas Crude Logistics System | Storage | Minimum

Related Party Transaction [Line Items]

Term of agreement (years)

5 years

East Texas Crude Logistics System | Storage | Maximum

Related Party Transaction [Line Items]

Term of agreement (years)

15 years

East Texas Marketing

Related Party Transaction [Line Items]

Term of agreement (years)

10 years

Minimum throughput commitment (bpd) | bbl

50,000

Throughput commitment tariff rate (dollars per barrel)

0.82

Throughput volume subject to additional fee (bpd) | bbl

50,000

Throughput commitment rate, additional for excess barrels (dollars per barrel)

0.78

Big Sandy Terminal | Refined Product Pipeline

Related Party Transaction [Line Items]

Minimum throughput commitment (bpd) | bbl

5,000

Throughput commitment tariff rate (dollars per barrel)

0.62

Big Sandy Terminal | Refined Product Pipeline | Minimum

Related Party Transaction [Line Items]

Term of agreement (years)

5 years

Big Sandy Terminal | Refined Product Pipeline | Maximum

Related Party Transaction [Line Items]

Term of agreement (years)

15 years

Big Sandy Terminal | Storage

Related Party Transaction [Line Items]

Minimum monthly storage fee revenue, amount | $

$ 61,923

Big Sandy Terminal | Storage | Minimum

Related Party Transaction [Line Items]

Term of agreement (years)

5 years

Big Sandy Terminal | Storage | Maximum

Related Party Transaction [Line Items]

Term of agreement (years)

15 years

Big Sandy Terminal | Big Sandy Terminal

Related Party Transaction [Line Items]

Minimum throughput commitment (bpd) | bbl

5,000

Throughput commitment tariff rate (dollars per barrel)

0.62

Big Sandy Terminal | Big Sandy Terminal | Minimum

Related Party Transaction [Line Items]

Term of agreement (years)

5 years

Big Sandy Terminal | Big Sandy Terminal | Maximum

Related Party Transaction [Line Items]

Term of agreement (years)

15 years

Tyler Terminal Throughput and Tankage

Related Party Transaction [Line Items]

Minimum throughput commitment (bpd) | bbl

50,000

Throughput commitment tariff rate (dollars per barrel)

0.38

Tyler Terminal Throughput and Tankage | Minimum

Related Party Transaction [Line Items]

Term of agreement (years)

8 years

Tyler Terminal Throughput and Tankage | Maximum

Related Party Transaction [Line Items]

Term of agreement (years)

16 years

Tyler Terminal Throughput and Tankage | Storage

Related Party Transaction [Line Items]

Minimum monthly storage fee revenue, amount | $

$ 894,648

Tyler Terminal Throughput and Tankage | Storage | Minimum

Related Party Transaction [Line Items]

Term of agreement (years)

8 years

Tyler Terminal Throughput and Tankage | Storage | Maximum

Related Party Transaction [Line Items]

Term of agreement (years)

16 years

Memphis Pipeline

Related Party Transaction [Line Items]

Term of agreement (years)

5 years

Minimum throughput commitment (bpd) | bbl

11,000

Throughput commitment tariff rate (dollars per barrel)

1.28

El Dorado Throughput and Tankage | Refined Product Pipeline

Related Party Transaction [Line Items]

Minimum throughput commitment (bpd) | bbl

11,000

Throughput commitment tariff rate (dollars per barrel)

0.54

El Dorado Throughput and Tankage | Refined Product Pipeline | Minimum

Related Party Transaction [Line Items]

Term of agreement (years)

8 years

El Dorado Throughput and Tankage | Refined Product Pipeline | Maximum

Related Party Transaction [Line Items]

Term of agreement (years)

16 years

El Dorado Throughput and Tankage | Storage

Related Party Transaction [Line Items]

Minimum monthly storage fee revenue, amount | $

$ 1,400,478

El Dorado Throughput and Tankage | Storage | Minimum

Related Party Transaction [Line Items]

Term of agreement (years)

8 years

El Dorado Throughput and Tankage | Storage | Maximum

Related Party Transaction [Line Items]

Term of agreement (years)

16 years

El Dorado Assets

Related Party Transaction [Line Items]

Minimum throughput fee | $

$ 1,600,000

El Dorado Assets | Light Crude Oil

Related Party Transaction [Line Items]

Throughput commitment tariff rate (dollars per barrel)

1.08

El Dorado Assets | Light Crude Oil | Minimum

Related Party Transaction [Line Items]

Term of agreement (years)

9 years

El Dorado Assets | Light Crude Oil | Maximum

Related Party Transaction [Line Items]

Term of agreement (years)

15 years

El Dorado Assets | Heavy Crude Oil

Related Party Transaction [Line Items]

Throughput commitment tariff rate (dollars per barrel)

2.43

El Dorado Assets | Heavy Crude Oil | Minimum

Related Party Transaction [Line Items]

Term of agreement (years)

9 years

El Dorado Assets | Heavy Crude Oil | Maximum

Related Party Transaction [Line Items]

Term of agreement (years)

15 years

Big Spring Pipeline, Storage And Throughput Facilities Agreement | Refined Product Pipeline

Related Party Transaction [Line Items]

Minimum throughput commitment (bpd) | bbl

104,300

Throughput commitment tariff rate (dollars per barrel)

0.05

Big Spring Pipeline, Storage And Throughput Facilities Agreement | Refined Product Pipeline | Minimum

Related Party Transaction [Line Items]

Term of agreement (years)

10 years

Big Spring Pipeline, Storage And Throughput Facilities Agreement | Refined Product Pipeline | Maximum

Related Party Transaction [Line Items]

Term of agreement (years)

15 years

Big Spring Pipeline, Storage And Throughput Facilities Agreement | Storage

Related Party Transaction [Line Items]

Minimum monthly storage fee revenue, amount | $

$ 1,411,406

Big Spring Pipeline, Storage And Throughput Facilities Agreement | Storage | Minimum

Related Party Transaction [Line Items]

Term of agreement (years)

10 years

Big Spring Pipeline, Storage And Throughput Facilities Agreement | Storage | Maximum

Related Party Transaction [Line Items]

Term of agreement (years)

15 years

Big Spring Pipeline, Storage And Throughput Facilities Agreement | Rail Offloading

Related Party Transaction [Line Items]

Minimum throughput commitment (bpd) | bbl

4,500

Throughput commitment tariff rate (dollars per barrel)

0.41

Big Spring Pipeline, Storage And Throughput Facilities Agreement | Rail Offloading | Minimum

Related Party Transaction [Line Items]

Term of agreement (years)

10 years

Big Spring Pipeline, Storage And Throughput Facilities Agreement | Rail Offloading | Maximum

Related Party Transaction [Line Items]

Term of agreement (years)

15 years

Big Spring Pipeline, Storage And Throughput Facilities Agreement | Dedicated Terminalling Services

Related Party Transaction [Line Items]

Minimum throughput commitment (bpd) | bbl

29,250

Throughput commitment tariff rate (dollars per barrel)

0.68

Big Spring Pipeline, Storage And Throughput Facilities Agreement | Dedicated Terminalling Services | Minimum

Related Party Transaction [Line Items]

Term of agreement (years)

10 years

Big Spring Pipeline, Storage And Throughput Facilities Agreement | Dedicated Terminalling Services | Maximum

Related Party Transaction [Line Items]

Term of agreement (years)

15 years

Big Spring Asphalt Services Agreement | Storage

Related Party Transaction [Line Items]

Minimum monthly storage fee revenue, amount | $

$ 468,703

Big Spring Asphalt Services Agreement | Storage | Minimum

Related Party Transaction [Line Items]

Term of agreement (years)

10 years

Big Spring Asphalt Services Agreement | Storage | Maximum

Related Party Transaction [Line Items]

Term of agreement (years)

15 years

Big Spring Asphalt Services Agreement | Dedicated Asphalt Terminalling

Related Party Transaction [Line Items]

Throughput commitment tariff rate (dollars per barrel)

8.52

Big Spring Asphalt Services Agreement | Dedicated Asphalt Terminalling | Minimum

Related Party Transaction [Line Items]

Term of agreement (years)

10 years

Minimum throughput commitment (bpd) | bbl

1,020

Big Spring Asphalt Services Agreement | Dedicated Asphalt Terminalling | Maximum

Related Party Transaction [Line Items]

Term of agreement (years)

15 years

Minimum throughput commitment (bpd) | bbl

2,380

Big Spring Marketing Agreement | Dedicated Marketing and Selling

Related Party Transaction [Line Items]

Minimum throughput commitment (bpd) | bbl

65,000

Big Spring Marketing Agreement | Dedicated Marketing and Selling | Minimum

Related Party Transaction [Line Items]

Term of agreement (years)

10 years

Throughput commitment tariff rate (dollars per barrel)

0.51

Big Spring Marketing Agreement | Dedicated Marketing and Selling | Maximum

Related Party Transaction [Line Items]

Term of agreement (years)

15 years

Throughput commitment tariff rate (dollars per barrel)

0.73

Delek Permian Throughput and Deficiency Agreement | Gathering and Transportation Services

Related Party Transaction [Line Items]

Minimum throughput commitment (bpd) | bbl

120,000

50,000

Throughput commitment tariff rate (dollars per barrel)

0.70

0.25

Delek Permian Throughput and Deficiency Agreement | Gathering and Transportation Services | Minimum

Related Party Transaction [Line Items]

Term of agreement (years)

10 years

10 years

Delek Permian Throughput and Deficiency Agreement | Gathering and Transportation Services | Maximum

Related Party Transaction [Line Items]

Term of agreement (years)

20 years

20 years

Big Spring Pipeline, Storage And Offloading Facilities Agreement | Refined Product Pipeline

Related Party Transaction [Line Items]

Minimum throughput commitment (bpd) | bbl

20,000

Throughput commitment tariff rate (dollars per barrel)

0.63

Big Spring Pipeline, Storage And Offloading Facilities Agreement | Refined Product Pipeline | Minimum

Related Party Transaction [Line Items]

Term of agreement (years)

2 years

Big Spring Pipeline, Storage And Offloading Facilities Agreement | Storage

Related Party Transaction [Line Items]

Minimum monthly storage fee revenue, amount | $

$ 240,000

Big Spring Pipeline, Storage And Offloading Facilities Agreement | Storage | Minimum

Related Party Transaction [Line Items]

Term of agreement (years)

2 years

Big Spring Pipeline, Storage And Offloading Facilities Agreement | Crude Oil Offloading

Related Party Transaction [Line Items]

Minimum throughput commitment (bpd) | bbl

15,120

Throughput commitment tariff rate (dollars per barrel)

0.90

Big Spring Pipeline, Storage And Offloading Facilities Agreement | Crude Oil Offloading | Minimum

Related Party Transaction [Line Items]

Term of agreement (years)

2 years

Big Spring Pipeline, Storage And Offloading Facilities Agreement | Truck Unloading Facility

Related Party Transaction [Line Items]

Minimum throughput commitment (bpd) | bbl

4,500

Throughput commitment tariff rate (dollars per barrel)

5

Big Spring Pipeline, Storage And Offloading Facilities Agreement | Truck Unloading Facility | Minimum

Related Party Transaction [Line Items]

Term of agreement (years)

2 years

Transportation Services Agreement | Transportation Services

Related Party Transaction [Line Items]

Minimum Revenue Commitment | $

$ 39,000,000

Transportation Services Agreement | Transportation Services | Minimum

Related Party Transaction [Line Items]

Term of agreement (years)

10 years

Transportation Services Agreement | Transportation Services | Maximum

Related Party Transaction [Line Items]

Term of agreement (years)

14 years

Related Party Transactions - Om

Related Party Transactions - Omnibus Agreement (Details) - Omnibus Agreement - Delek - USD ($) $ in Millions	Mar. 01, 2018	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Related Party Transaction [Line Items]
Obligation to pay annual fee	$ 4.7
Delek US
Related Party Transaction [Line Items]
Recovery of direct costs		$ 0.1	$ 4.8
Operating and maintenance expenses | Delek US
Related Party Transaction [Line Items]
Recovery of direct costs		0.1	6.3	$ 8.2
Other Noncurrent Liabilities | Delek US
Related Party Transaction [Line Items]
Reimbursement of capital expenditures by Delek Holdings		$ 0.6	$ 3.7	$ 5

Related Party Transactions - Ot

Related Party Transactions - Other Agreements (Details) - USD ($) $ in Millions	Aug. 13, 2020	Mar. 31, 2020	Mar. 31, 2020	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018	Mar. 01, 2020	Feb. 29, 2020
Related Party Transaction [Line Items]
Delek Holdings unit purchases from public				0
Stock repurchased during period, value			$ 5
Big spring gathering assets acquisition equity				5,000,000
Limited liability company or limited partnership, members or limited partners, ownership interest, shares				34,700,000
Revolving Credit Facility | DKL Revolver | Fifth Third Bank | Line of Credit
Related Party Transaction [Line Items]
Cash consideration received	$ 45
Common- Delek | Limited Partner
Related Party Transaction [Line Items]
Delek Holdings unit purchases from public				(451,822)
Big spring gathering assets acquisition equity				5,000,000
Big Spring Gathering Asset
Related Party Transaction [Line Items]
Big spring gathering assets acquisition equity		5,000,000
General Partnership
Related Party Transaction [Line Items]
General partner economic interest, percent	2.00%
Delek US Holdings, Inc.
Related Party Transaction [Line Items]
Delek's limited partner interest				80.00%
Delek Logistics G P
Related Party Transaction [Line Items]
General partner economic interest, percent	2.00%
Delek US Holdings, Inc. | General Partnership
Related Party Transaction [Line Items]
Business acquisition, percentage of voting interests acquired	5.20%
Delek's ownership interest in general partner	100.00%
Delek US Holdings, Inc. | Delek Logistics
Related Party Transaction [Line Items]
Business combination, consideration transferred equity interests issues and issuable, shares	14,000,000
Delek
Related Party Transaction [Line Items]
Related party ownership percentage in company		70.50%	70.50%				62.60%	64.50%
Operating and maintenance expenses | Partnership Agreement | General Partner
Related Party Transaction [Line Items]
Payment for management fee				$ 29.4	$ 25	$ 21.1

Related Party Transactions - Su

Related Party Transactions - Summary of Transactions (Details) - USD ($) $ in Thousands		12 Months Ended
		Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Related Party Transaction [Line Items]
Revenues	[1]	$ 382,666	$ 261,014	$ 240,809
Delek
Related Party Transaction [Line Items]
Revenues		382,666	261,014	240,809
General and administrative expenses		12,557	7,977	8,250
Purchases from Affiliates | Delek
Related Party Transaction [Line Items]
Purchases from Affiliates		205,581	285,539	349,089
Operating and maintenance expenses | Delek
Related Party Transaction [Line Items]
Operating and maintenance expenses		43,985	49,904	$ 36,182
DPG Management Agreement, Operating Service And Construction Fee Paid To Partnership | Delek
Related Party Transaction [Line Items]
Operating and maintenance expenses		$ 2,000	$ 6,100
[1]	See Note 4 for a description of our material affiliate revenue transactions.

Related Party Transactions - Qu

Related Party Transactions - Quarterly Cash Distributions Paid (Details) - USD ($) $ in Thousands

Feb. 09, 2021

Jan. 22, 2021

Nov. 12, 2020

Aug. 12, 2020

May 12, 2020

Feb. 12, 2020

Nov. 12, 2019

Aug. 13, 2019

May 14, 2019

Feb. 12, 2019

Dec. 31, 2020

Dec. 31, 2019

Dec. 31, 2018

Related Party Transaction [Line Items]

Distribution Made to Limited Partner, Cash Distributions Paid

$ 39,308

$ 35,969

$ 30,878

$ 30,634

$ 30,379

$ 28,914

$ 27,438

$ 26,949

$ 136,800

$ 113,700

$ 97,700

Subsequent Event

Related Party Transaction [Line Items]

Distribution Made to Limited Partner, Cash Distributions Paid

$ 39,533

Cash distributions declared

$ 39,500

Delek

Related Party Transaction [Line Items]

Distribution Made to Limited Partner, Cash Distributions Paid

$ 105,300

$ 83,000

$ 70,100

Delek | Subsequent Event

Related Party Transaction [Line Items]

Distribution Made to Limited Partner, Cash Distributions Paid

$ 31,600

Revenues - Narrative (Details)

Revenues - Narrative (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Disaggregation of Revenue [Line Items]
Property, plant and equipment, net	$ 464,812	$ 295,044
Customer Concentration Risk | Revenue Benchmark | Delek US
Disaggregation of Revenue [Line Items]
Concentration risk, percentage	67.40%	44.80%	36.60%
Customer Concentration Risk | Revenue Benchmark | Sunoco
Disaggregation of Revenue [Line Items]
Concentration risk, percentage	5.60%	14.50%	15.90%
Assets Leased to Others
Disaggregation of Revenue [Line Items]
Property, plant and equipment, net	$ 396,800

Revenues - Disaggregation of Re

Revenues - Disaggregation of Revenue (Details) - USD ($) $ in Thousands	3 Months Ended								12 Months Ended
	Dec. 31, 2020	Sep. 30, 2020	Jun. 30, 2020	Mar. 31, 2020	Dec. 31, 2019	Sep. 30, 2019	Jun. 30, 2019	Mar. 31, 2019	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Disaggregation of Revenue [Line Items]
Revenue from contracts with customers	$ 140,112	$ 142,268	$ 117,637	$ 163,401	$ 138,610	$ 137,556	$ 155,342	$ 152,483	$ 563,418	$ 583,992	$ 657,609
Lease Revenue - Affiliate									260,088	193,865
Amortization of customer contract intangible assets									7,211	7,211	6,009
Service Revenue - Third Party
Disaggregation of Revenue [Line Items]
Revenue from contracts with customers									18,230	23,730
Service Revenue - Affiliate
Disaggregation of Revenue [Line Items]
Revenue from contracts with customers									51,400	35,208
Product Revenue - Third Party
Disaggregation of Revenue [Line Items]
Revenue from contracts with customers									162,522	299,248
Product Revenue - Affiliate
Disaggregation of Revenue [Line Items]
Revenue from contracts with customers									71,178	31,941
Pipelines and Transportation
Disaggregation of Revenue [Line Items]
Revenue from contracts with customers									251,469	178,318	153,567
Lease Revenue - Affiliate									216,105	155,211
Pipelines and Transportation | Service Revenue - Third Party
Disaggregation of Revenue [Line Items]
Revenue from contracts with customers									17,596	23,107
Pipelines and Transportation | Service Revenue - Affiliate
Disaggregation of Revenue [Line Items]
Revenue from contracts with customers									17,768	0
Pipelines and Transportation | Product Revenue - Third Party
Disaggregation of Revenue [Line Items]
Revenue from contracts with customers									0	0
Pipelines and Transportation | Product Revenue - Affiliate
Disaggregation of Revenue [Line Items]
Revenue from contracts with customers									0	0
Wholesale Marketing and Terminalling
Disaggregation of Revenue [Line Items]
Revenue from contracts with customers									311,949	405,674	$ 504,042
Lease Revenue - Affiliate									43,983	38,654
Wholesale Marketing and Terminalling | Service Revenue - Third Party
Disaggregation of Revenue [Line Items]
Revenue from contracts with customers									634	623
Wholesale Marketing and Terminalling | Service Revenue - Affiliate
Disaggregation of Revenue [Line Items]
Revenue from contracts with customers									33,632	35,208
Wholesale Marketing and Terminalling | Product Revenue - Third Party
Disaggregation of Revenue [Line Items]
Revenue from contracts with customers									162,522	299,248
Wholesale Marketing and Terminalling | Product Revenue - Affiliate
Disaggregation of Revenue [Line Items]
Revenue from contracts with customers									$ 71,178	$ 31,941

Revenues - Remaining Performanc

Revenues - Remaining Performance Obligation (Details) $ in Thousands	12 Months Ended
	Dec. 31, 2020USD ($)
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Revenue, remaining performance obligation	$ 1,518,267
Minimum | Delek
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Term of agreement (years)	5 years
Maximum | Delek
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Term of agreement (years)	10 years
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2021-01-01
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Revenue, remaining performance obligation	$ 269,181
Revenue, remaining performance obligation, expected timing of satisfaction	1 year
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2022-01-01
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Revenue, remaining performance obligation	$ 251,043
Revenue, remaining performance obligation, expected timing of satisfaction	1 year
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2023-01-01
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Revenue, remaining performance obligation	$ 241,631
Revenue, remaining performance obligation, expected timing of satisfaction	1 year
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2024-01-01
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Revenue, remaining performance obligation	$ 166,697
Revenue, remaining performance obligation, expected timing of satisfaction	1 year
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2025-01-01
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Revenue, remaining performance obligation	$ 589,715
Revenue, remaining performance obligation, expected timing of satisfaction

Net Income Per Unit (Details)

Net Income Per Unit (Details) - USD ($) $ / shares in Units, $ in Thousands	Aug. 13, 2020	Mar. 31, 2020	Dec. 31, 2020	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Net income per unit [Line Items]
Big Spring Gathering Assets Acquisition equity issuance				5,000,000
Net Income Attributable To Partners				$ 159,256	$ 96,749	$ 90,182
Earning in excess (deficit) of distributions				$ 13,568	$ (20,616)	$ (11,708)
Weighted average limited partner units outstanding:
Common units - (basic) (in units)				33,594,284	24,413,294	24,390,286
Common units - (diluted) (in units)				33,597,418	24,418,641	24,396,881
Net income per limited partner unit:
Common units - basic (in usd per unit)				$ 4.18	$ 2.61	$ 2.65
Common - diluted (in usd per unit)				$ 4.18	$ 2.61	$ 2.65
Footnote [Abstract]
Common units excluded from computation of earnings per share (in units)				5,201	0	1,776
Big Spring Gathering Asset
Net income per unit [Line Items]
Big Spring Gathering Assets Acquisition equity issuance		5,000,000
Delek Logistics G P
Net income per unit [Line Items]
General partner economic interest, percent	2.00%
General Partnership
Net income per unit [Line Items]
General partner economic interest, percent	2.00%
Footnote [Abstract]
General partner's ownership interest				2.00%	2.00%	2.00%
Maximum
Footnote [Abstract]
Distribution payment targets (in usd per unit)			$ 0.43125
General Partner
Net income per unit [Line Items]
Big Spring Gathering Assets Acquisition equity issuance				0
Net Income Attributable To Partners				$ 18,724	$ 33,080	$ 25,543
General partner's distribution				18,618	33,492	25,777
Earning in excess (deficit) of distributions				106	(412)	(234)
Total earnings				18,724	33,080	25,543
Limited Partner
Net income per unit [Line Items]
Limited partners' distribution				127,070	83,873	76,113
Earning in excess (deficit) of distributions				13,462	(20,204)	(11,474)
Total earnings				$ 140,532	$ 63,669	$ 64,639
Weighted average limited partner units outstanding:
Common units - (basic) (in units)				33,594,284	24,413,294	24,390,286
Common units - (diluted) (in units)				33,597,418	24,418,641	24,396,881
Net income per limited partner unit:
Common units - basic (in usd per unit)				$ 4.18	$ 2.61	$ 2.65
Common - diluted (in usd per unit)				$ 4.18	$ 2.61	$ 2.65

Inventory (Details)

Inventory (Details) - USD ($) $ in Thousands	Dec. 31, 2020	Dec. 31, 2019
Inventory, Net [Abstract]
Inventory	$ 3,127	$ 12,617

Property, Plant and Equipment_2

Property, Plant and Equipment (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019
Property, Plant and Equipment [Line Items]
Property, plant and equipment	$ 692,282	$ 461,325
Less: accumulated depreciation	(227,470)	(166,281)
Property, plant and equipment, net	464,812	295,044
Depreciation expense	35,731	26,701
Pipelines and Transportation
Property, Plant and Equipment [Line Items]
Property, plant and equipment	580,631	354,429
Less: accumulated depreciation	(176,020)	(125,771)
Property, plant and equipment, net	404,611	228,658
Depreciation expense	27,682	20,803
Wholesale Marketing and Terminalling
Property, Plant and Equipment [Line Items]
Property, plant and equipment	111,651	106,896
Less: accumulated depreciation	(51,450)	(40,510)
Property, plant and equipment, net	60,201	66,386
Depreciation expense	8,049	5,898
Land
Property, Plant and Equipment [Line Items]
Property, plant and equipment	14,533	4,458
Building and building improvements
Property, Plant and Equipment [Line Items]
Property, plant and equipment	2,742	1,853
Pipelines, tanks and terminals
Property, Plant and Equipment [Line Items]
Property, plant and equipment	606,116	427,287
Asset retirement obligation assets
Property, Plant and Equipment [Line Items]
Property, plant and equipment	2,073	2,073
Other equipment
Property, Plant and Equipment [Line Items]
Property, plant and equipment	30,803	16,634
Construction in process
Property, Plant and Equipment [Line Items]
Property, plant and equipment	$ 36,015	$ 9,020

Goodwill (Details)

Goodwill (Details) - USD ($)	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Goodwill [Line Items]
Goodwill, impairment loss	$ 0	$ 0	$ 0
Goodwill	12,203,000	12,203,000
Wholesale Marketing and Terminalling
Goodwill [Line Items]
Goodwill	7,500,000	7,500,000	7,500,000
Pipelines and Transportation
Goodwill [Line Items]
Goodwill	$ 4,700,000	$ 4,700,000	$ 4,700,000

Other Intangible Assets (Detail

Other Intangible Assets (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019
Other Intangible Assets [Line Items]
Accumulated amortization	$ (20,431)	$ (13,220)
Intangible assets, net	123,788	130,999
Intangible assets, gross	180,535	159,816
Intangible assets, net	160,104	146,596
Rights-of-way assets
Other Intangible Assets [Line Items]
Rights-of-way assets	$ 36,316	$ 15,597
Marketing contract
Other Intangible Assets [Line Items]
Estimated useful life (years)	20 years	20 years
Intangible assets, gross	$ 144,219	$ 144,219
Accumulated amortization	(20,431)	(13,220)
Intangible assets, net	$ 123,788	$ 130,999

Other Intangible Assets - Narra

Other Intangible Assets - Narrative (Details) - Supply contract - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Other Intangible Assets [Line Items]
Amortization of Intangible Assets	$ 7.2	$ 7.2	$ 6.1
Finite-Lived Intangible Assets, Net, Amortization Expense, Fiscal Year Maturity [Abstract]
2021	7.2
2022	7.2
2023	7.2
2024	7.2
2025	$ 7.2

Long-Term Obligations - DKL Cre

Long-Term Obligations - DKL Credit Facility (Details) - Revolving Credit Facility - Fifth Third Bank - Line of Credit - USD ($) $ in Thousands	Aug. 13, 2020	Dec. 31, 2020	Sep. 28, 2018
Debt Instrument [Line Items]
Weighted average interest rate		2.44%
Second Amended and Restated Credit Agreement
Debt Instrument [Line Items]
Unused capacity, commitment fee percentage		0.35%
Line of credit facility, amount outstanding		$ 746,600
Letters of credit		0
Available borrowing capacity		$ 103,400
DKL Revolver
Debt Instrument [Line Items]
Maximum borrowing capacity			$ 850,000
Maximum borrowing capacity under accordion feature			$ 1,000,000
Cash consideration received	$ 45,000
Increase (decrease) in restricted cash	$ 20,000

Long-Term Obligations - 6.750%

Long-Term Obligations - 6.750% Senior Notes Due 2025 (Details) - Senior Notes - 2025 Notes - USD ($) $ in Thousands	May 23, 2017	Dec. 31, 2020
Debt Instrument [Line Items]
Debt instrument, face amount	$ 250,000
Debt instrument, interest rate, stated percentage	6.75%	6.75%
Line of credit facility, amount outstanding		$ 250,000
Effective interest rate		7.45%
Debt Issuance Costs, Net		$ 3,300
Debt Instrument, Unamortized Discount		$ 1,000
Twelve-Month Period Beginning on May 15, 2020
Debt Instrument [Line Items]
Debt instrument, redemption price, percentage of principal amount redeemed	105.063%
Twelve-Month Period Beginning on May 15, 2021
Debt Instrument [Line Items]
Debt instrument, redemption price, percentage of principal amount redeemed	103.375%
Twelve-Month Period Beginning on May 15, 2022
Debt Instrument [Line Items]
Debt instrument, redemption price, percentage of principal amount redeemed	101.688%
Twelve-Month Period Beginning on May 15, 2023
Debt Instrument [Line Items]
Debt instrument, redemption price, percentage of principal amount redeemed	100.00%
Debt Instrument, Redemption, Change Of Control
Debt Instrument [Line Items]
Debt instrument, redemption price, percentage of principal amount redeemed	101.00%

Long-Term Obligations - Maturit

Long-Term Obligations - Maturities of Long-term Debt (Details) $ in Thousands	Dec. 31, 2020USD ($)
DKL Credit Facility | Revolving Credit Facility | Fifth Third Bank | Line of Credit
Debt Instrument [Line Items]
2021	$ 0
2022	0
2023	746,600
2024	0
2025	0
Thereafter	0
Total	746,600
2025 Notes | Senior Notes
Debt Instrument [Line Items]
2021	0
2022	0
2023	0
2024	0
2025	250,000
Thereafter	0
Total	$ 250,000

Equity - Narrative (Details)

Equity - Narrative (Details) - USD ($) $ / shares in Units, $ in Millions	Aug. 13, 2020	Dec. 31, 2020	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018	Aug. 31, 2020
Limited Partners' Capital Account [Line Items]
Maximum percentage increase of cash distributions from operating surplus			48.00%
Maximum
Limited Partners' Capital Account [Line Items]
Distribution payment targets (in usd per unit)		$ 0.43125
Delek US Holdings, Inc.
Limited Partners' Capital Account [Line Items]
Delek's limited partner interest			80.00%
General Partnership
Limited Partners' Capital Account [Line Items]
General partner economic interest, percent	2.00%
General partner's ownership interest			2.00%	2.00%	2.00%
General Partnership | Delek US Holdings, Inc.
Limited Partners' Capital Account [Line Items]
Business acquisition, percentage of voting interests acquired	5.20%
Delek's ownership interest in general partner	100.00%
Business combination, acquisition related costs	$ 1.1
Delek Logistics G P
Limited Partners' Capital Account [Line Items]
General partner economic interest, percent	2.00%
Common - Public
Limited Partners' Capital Account [Line Items]
Common unitholders, outstanding (in units)		8,697,468	8,697,468
Common - Delek Holdings
Limited Partners' Capital Account [Line Items]
Common unitholders, outstanding (in units)		34,745,868	34,745,868
Limited Partner | Delek US
Limited Partners' Capital Account [Line Items]
Limited partners interest in partnership, shares						14,000,000
Limited Partner | Common - Public
Limited Partners' Capital Account [Line Items]
Common unitholders, outstanding (in units)		8,697,468	8,697,468	9,131,579
Limited Partner | Common - Delek Holdings
Limited Partners' Capital Account [Line Items]
Common unitholders, outstanding (in units)		34,745,868	34,745,868	15,294,046

Equity - Units Rollforward (Det

Equity - Units Rollforward (Details) - shares	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Increase (Decrease) in Partners' Capital [Roll Forward]
Beginning balance (in units)	24,924,107	24,901,891	24,880,237
General partner units issued to maintain 2% interest	102,196	444	434
Unit-based compensation awards (in units)	17,711	21,772	21,220
Big Spring Gathering Assets Acquisition equity issuance	5,000,000
Delek Holdings unit purchases from public	0
General Partner units converted to non-economic general partner interest	(600,678)
Common limited partner units issued in IDR Restructuring Transaction	14,000,000
Ending balance (in units)	43,443,336	24,924,107	24,901,891
Units withheld for taxes (in units)	926	0	598
General Partnership
Increase (Decrease) in Partners' Capital [Roll Forward]
General partner's ownership interest	2.00%	2.00%	2.00%
General Partner
Increase (Decrease) in Partners' Capital [Roll Forward]
Beginning balance (in units)	498,482	498,038	497,604
General partner units issued to maintain 2% interest	102,196	444	434
Unit-based compensation awards (in units)	0	0	0
Big Spring Gathering Assets Acquisition equity issuance	0
Delek Holdings unit purchases from public	0
General Partner units converted to non-economic general partner interest	(600,678)
Common limited partner units issued in IDR Restructuring Transaction	0
Ending balance (in units)	0	498,482	498,038
Common - Public | Limited Partner
Increase (Decrease) in Partners' Capital [Roll Forward]
Beginning balance (in units)	9,131,579	9,109,807	9,088,587
General partner units issued to maintain 2% interest	0	0	0
Unit-based compensation awards (in units)	17,711	21,772	21,220
Big Spring Gathering Assets Acquisition equity issuance	0
Delek Holdings unit purchases from public	(451,822)
General Partner units converted to non-economic general partner interest	0
Common limited partner units issued in IDR Restructuring Transaction	0
Ending balance (in units)	8,697,468	9,131,579	9,109,807
Common - Delek Holdings | Limited Partner
Increase (Decrease) in Partners' Capital [Roll Forward]
Beginning balance (in units)	15,294,046	15,294,046	15,294,046
General partner units issued to maintain 2% interest	0	0	0
Unit-based compensation awards (in units)	0	0	0
Big Spring Gathering Assets Acquisition equity issuance	5,000,000
Delek Holdings unit purchases from public	451,822
General Partner units converted to non-economic general partner interest	0
Common limited partner units issued in IDR Restructuring Transaction	14,000,000
Ending balance (in units)	34,745,868	15,294,046	15,294,046

Equity - Net income applicable

Equity - Net income applicable to partners (Details) - USD ($) $ in Thousands		12 Months Ended
		Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Equity [Abstract]
Net income attributable to partners		$ 159,256	$ 96,749	$ 90,182
Less: General partner's IDRs		(17,632)	(31,781)	(24,224)
Net income available to partners		141,624	64,968	65,958
General partner's allocated interest in net income		1,092	1,299	1,319
General partner's IDRs		17,632	31,781	24,224
Total general partner's interest in net income	[1]	$ 18,724	$ 33,080	$ 25,543
[1]	See Note 4 for a description of the IDR Restructuring Transaction.

Equity - Cash distributions (De

Equity - Cash distributions (Details) - USD ($) $ / shares in Units, $ in Thousands	Feb. 09, 2021	Nov. 12, 2020	Aug. 12, 2020	May 12, 2020	Feb. 12, 2020	Nov. 12, 2019	Aug. 13, 2019	May 14, 2019	Feb. 12, 2019	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Distribution Made to Limited Partner [Line Items]
Total Quarterly Distribution Per Limited Partner Unit		$ 0.905	$ 0.900	$ 0.890	$ 0.885	$ 0.880	$ 0.850	$ 0.820	$ 0.810
Total Quarterly Distribution Per Limited Partner Unit, Annualized		$ 3.62	$ 3.60	$ 3.56	$ 3.54	$ 3.52	$ 3.40	$ 3.28	$ 3.24
Total Cash Distribution, including general partner interest and IDRs (in thousands)		$ 39,308	$ 35,969	$ 30,878	$ 30,634	$ 30,379	$ 28,914	$ 27,438	$ 26,949	$ 136,800	$ 113,700	$ 97,700
Less: General partner's IDRs										17,632	31,781	24,224
Total cash distributions										$ 145,688	$ 117,365	$ 101,890
Cash distributions per limited partner unit (in usd per unit)										$ 3.605	$ 3.440	$ 3.120
Subsequent Event
Distribution Made to Limited Partner [Line Items]
Total Quarterly Distribution Per Limited Partner Unit	$ 0.910
Total Quarterly Distribution Per Limited Partner Unit, Annualized	$ 3.64
Total Cash Distribution, including general partner interest and IDRs (in thousands)	$ 39,533
General Partner
Distribution Made to Limited Partner [Line Items]
General partner's distributions										$ 986	$ 1,711	$ 1,553
Less: General partner's IDRs										17,632	31,781	24,224
Total general partner's distributions										18,618	33,492	25,777
Limited Partner
Distribution Made to Limited Partner [Line Items]
Limited partners' distribution										$ 127,070	$ 83,873	$ 76,113

Equity Method Investments - Nar

Equity Method Investments - Narrative (Details) $ in Thousands	1 Months Ended	12 Months Ended
	May 31, 2019USD ($)	Dec. 31, 2020USD ($)joint_venture	Dec. 31, 2019USD ($)	Dec. 31, 2018USD ($)
Schedule of Equity Method Investments [Line Items]
Equity method investments		$ 253,675	$ 246,984
Equity method investment contributions		$ 12,175	$ 139,294	$ 173
Number of joint ventures | joint_venture		3
Red River
Schedule of Equity Method Investments [Line Items]
Equity method investments	$ 124,700
Equity method investment, ownership percentage	33.00%
Red River Start Up Capital
Schedule of Equity Method Investments [Line Items]
Equity method investment contributions	$ 400
Red River Expansion
Schedule of Equity Method Investments [Line Items]
Equity method investment contributions	$ 3,500	$ 12,200
CP LLC And Rangeland Energy
Schedule of Equity Method Investments [Line Items]
Number of joint ventures | joint_venture		2
CP LLC
Schedule of Equity Method Investments [Line Items]
Equity method investment, ownership percentage		50.00%
Rangeland Rio
Schedule of Equity Method Investments [Line Items]
Equity method investment, ownership percentage		33.00%

Equity Method Investments - Sum

Equity Method Investments - Summarized Financial Information (Details) - USD ($) $ in Thousands	3 Months Ended								8 Months Ended	12 Months Ended
	Dec. 31, 2020	Sep. 30, 2020	Jun. 30, 2020	Mar. 31, 2020	Dec. 31, 2019	Sep. 30, 2019	Jun. 30, 2019	Mar. 31, 2019	Dec. 31, 2019	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Schedule of Equity Method Investments [Line Items]
Current assets	$ 29,309				$ 33,570				$ 33,570	$ 29,309	$ 33,570
Current liabilities	28,300				35,082				35,082	28,300	35,082
Non-current liabilities	1,036,418				860,484				860,484	1,036,418	860,484
Revenues	140,112	$ 142,268	$ 117,637	$ 163,401	138,610	$ 137,556	$ 155,342	$ 152,483		563,418	583,992	$ 657,609
Operating income	45,105	$ 51,765	$ 47,881	$ 35,042	29,715	$ 34,729	$ 32,256	$ 29,111		179,793	125,812	125,757
Net income attributable to partners										159,256	96,749	90,182
Red River | Red River
Schedule of Equity Method Investments [Line Items]
Current assets	13,488				9,278				9,278	13,488	9,278
Non-current assets	413,259				381,778				381,778	413,259	381,778
Current liabilities	7,789				8,291				8,291	7,789	8,291
Revenues									38,352	51,001
Red River | Equity Method Investment, Nonconsolidated Investee or Group of Investees
Schedule of Equity Method Investments [Line Items]
Gross profit									25,919	31,103
Operating income									25,497	30,382
Net income attributable to partners									25,548	30,404
Joint Ventures | Equity Method Investment, Nonconsolidated Investee or Group of Investees
Schedule of Equity Method Investments [Line Items]
Current assets	20,763				29,476				29,476	20,763	29,476
Non-current assets	253,862				262,300				262,300	253,862	262,300
Current liabilities	1,496				6,391				6,391	1,496	6,391
Non-current liabilities	$ 0				$ 8				$ 8	0	8
Revenues										55,482	48,703	35,050
Gross profit										36,904	30,473	17,690
Operating income										34,951	28,503	12,909
Net income attributable to partners										$ 34,977	$ 28,601	$ 15,701

Segment Data - Narrative (Detai

Segment Data - Narrative (Details)	12 Months Ended
	Dec. 31, 2020segment
Segment Reporting [Abstract]
Number of reportable segments	2

Segment Data - Schedule of Segm

Segment Data - Schedule of Segments (Details) - USD ($) $ in Thousands		3 Months Ended								12 Months Ended
		Dec. 31, 2020	Sep. 30, 2020	Jun. 30, 2020	Mar. 31, 2020	Dec. 31, 2019	Sep. 30, 2019	Jun. 30, 2019	Mar. 31, 2019	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018	Mar. 01, 2018
Segment Reporting Information [Line Items]
Affiliate	[1]									$ 382,666	$ 261,014	$ 240,809
Third party										180,752	322,978	416,800
Revenue from contracts with customers		$ 140,112	$ 142,268	$ 117,637	$ 163,401	$ 138,610	$ 137,556	$ 155,342	$ 152,483	563,418	583,992	657,609
Cost of materials and other										269,094	336,473	429,061
Operating expenses (excluding depreciation and amortization)										56,279	74,157	58,744
Segment contribution margin										238,045	173,362	169,804
General and administrative expenses										22,587	20,815	17,166
Depreciation and amortization										35,731	26,701	25,990
Other operating (income) expense, net										(66)	34	891
Operating income		45,105	$ 51,765	$ 47,881	$ 35,042	29,715	$ 34,729	$ 32,256	$ 29,111	179,793	125,812	125,757
Capital spending										15,449	9,987	11,565
Total assets		956,417				744,447				956,417	744,447
Big Spring Logistic Assets
Segment Reporting Information [Line Items]
Capitalized acquisition costs												400	$ 400
Delek Trucking
Segment Reporting Information [Line Items]
Capitalized acquisition costs		300								300
Big Spring Gathering Asset
Segment Reporting Information [Line Items]
Capitalized acquisition costs		700								700
Pipelines and Transportation
Segment Reporting Information [Line Items]
Affiliate										233,873	155,211	138,418
Third party										17,596	23,107	15,149
Revenue from contracts with customers										251,469	178,318	153,567
Operating expenses (excluding depreciation and amortization)										42,267	54,827	39,934
Segment contribution margin										163,268	100,665	93,755
Capital spending										7,631	6,600	6,840
Total assets		723,317				509,666				723,317	509,666
Pipelines and Transportation | Service
Segment Reporting Information [Line Items]
Cost of materials and other										45,934	22,826	19,878
Wholesale Marketing and Terminalling
Segment Reporting Information [Line Items]
Affiliate										148,793	105,803	102,391
Third party										163,156	299,871	401,651
Revenue from contracts with customers										311,949	405,674	504,042
Operating expenses (excluding depreciation and amortization)										14,012	19,330	18,810
Segment contribution margin										74,777	72,697	76,049
Capital spending										7,818	3,387	4,725
Total assets		206,918				214,259				206,918	214,259
Wholesale Marketing and Terminalling | Service
Segment Reporting Information [Line Items]
Cost of materials and other										223,160	313,647	$ 409,183
Other
Segment Reporting Information [Line Items]
Total assets		$ 26,182				$ 20,522				$ 26,182	$ 20,522
[1]	See Note 4 for a description of our material affiliate revenue transactions.

Income Taxes - Narrative (Detai

Income Taxes - Narrative (Details) - USD ($)	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Income Tax Disclosure [Abstract]
Deferred tax liabilities	$ 616,000	$ 215,000
Uncertain tax positions	0	0
Uncertain tax positions, income tax penalties and interest expense	$ 0	$ 0	$ 0

Income Taxes - Reconciliation o

Income Taxes - Reconciliation of Actual Income Tax Expense to Statutory (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Income Tax Disclosure [Abstract]
State income taxes	$ 223	$ 967	$ 534
Total	$ 223	$ 967	$ 534

Income Taxes - Components of In

Income Taxes - Components of Income Tax Expense (Benefit) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Income Tax Disclosure [Abstract]
Current	$ (178)	$ 471	$ 382
Deferred income taxes	401	496	152
Total	$ 223	$ 967	$ 534

Commitments and Contingencies -

Commitments and Contingencies - Crude Oil Releases (Details) $ in Millions	Nov. 20, 2019USD ($)	Dec. 31, 2020USD ($)crudeOilRelease	Dec. 31, 2019USD ($)crudeOilRelease	Dec. 31, 2018USD ($)
Loss Contingencies [Line Items]
Number of crude oil releases | crudeOilRelease		0	5
Environmental exit costs, costs accrued to date		$ 0.5	$ 7.1
Expense recorded, net of total reimbursable costs		0.1	0.4
Operating and maintenance expenses
Loss Contingencies [Line Items]
Accrual for environmental loss contingencies		0.3
Delek US | Omnibus Agreement | Delek
Loss Contingencies [Line Items]
Recovery of direct costs		0.1	4.8
Delek US | Operating and maintenance expenses | Omnibus Agreement | Delek
Loss Contingencies [Line Items]
Recovery of direct costs		$ 0.1	6.3	$ 8.2
Other Current Liabilities | Magnolia Station Spill | Magnolia Station Spill
Loss Contingencies [Line Items]
Accrual for environmental loss contingencies				$ 2.2
State of Arkansas | Other Current Liabilities | Magnolia Station Spill | Magnolia Station Spill
Loss Contingencies [Line Items]
Environmental remediation expense	$ 0.6
DOJ | Other Current Liabilities | Magnolia Station Spill | Magnolia Station Spill
Loss Contingencies [Line Items]
Environmental remediation expense			$ 1.7

Leases - Lease Cost and Other I

Leases - Lease Cost and Other Information (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019
Leases [Abstract]
Operating lease cost	$ 7,478	$ 4,643
Short-term lease cost	1,852	850
Variable lease costs	1,002	0
Total lease cost	10,332	5,493
Cash paid for amounts included in the measurement of lease liabilities:
Operating cash flows from operating leases	(7,478)	(4,643)
Leased assets obtained in exchange for new operating lease liabilities	26,528	1,285
Leased assets obtained in exchange for new financing lease liabilities	$ 5,562	$ 0
Weighted-average remaining lease term (years) for operating leases	3 years 6 months 21 days	4 years
Weighted-average discount rate operating leases	6.00%	0.00%
Weighted-average remaining lease term (years) for finance lease	2 years 11 months 1 day	0 years
Weighted-average discount rate finance lease	1.80%	0.00%

Leases - Lease Payments, Operat

Leases - Lease Payments, Operating Lease Maturity (Details) $ in Thousands	Dec. 31, 2020USD ($)
Operating Leases, under 842:
2021	$ 7,989
2022	9,896
2023	6,317
2024	5,698
2025	3,601
Thereafter	1,736
Total lease payments	35,237
Less: Interest	11,128
Present value of lease liabilities	$ 24,109

Leases - Lease Payments, Financ

Leases - Lease Payments, Finance Lease Maturity (Details) $ in Thousands	Dec. 31, 2020USD ($)
Finance Lease, Liability, Payment, Due [Abstract]
2021	$ 2,060
2022	1,902
2023	1,585
Total lease payment	5,547
Less: Interest	136
Present values of lease liabilities	$ 5,411

Selected Quarterly Financial _3

Selected Quarterly Financial Data (Unaudited) (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended								12 Months Ended
	Dec. 31, 2020	Sep. 30, 2020	Jun. 30, 2020	Mar. 31, 2020	Dec. 31, 2019	Sep. 30, 2019	Jun. 30, 2019	Mar. 31, 2019	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Revenues	$ 140,112	$ 142,268	$ 117,637	$ 163,401	$ 138,610	$ 137,556	$ 155,342	$ 152,483	$ 563,418	$ 583,992	$ 657,609
Operating income	45,105	51,765	47,881	35,042	29,715	34,729	32,256	29,111	179,793	125,812	125,757
Net income	40,717	46,328	44,415	27,796	21,638	30,530	24,885	19,696	159,256	96,749	90,182
Limited partners' interest in net income	$ 40,717	$ 46,328	$ 34,768	$ 18,719	$ 12,804	$ 21,635	$ 16,806	$ 12,426	$ 140,532	$ 63,669	$ 64,639
Net income per limited partner unit:
Common - basic (in usd per unit)									$ 4.18	$ 2.61	$ 2.65
Common - diluted (in usd per unit)									$ 4.18	$ 2.61	$ 2.65
Common Units
Net income per limited partner unit:
Common - basic (in usd per unit)	$ 0.94	$ 1.26	$ 1.18	$ 0.76	$ 0.52	$ 0.89	$ 0.69	$ 0.51
Common - diluted (in usd per unit)	$ 0.94	$ 1.26	$ 1.18	$ 0.76	$ 0.52	$ 0.89	$ 0.69	$ 0.51

Subsequent Events (Details)

Subsequent Events (Details) - $ / shares	Feb. 09, 2021	Nov. 12, 2020	Aug. 12, 2020	May 12, 2020	Feb. 12, 2020	Nov. 12, 2019	Aug. 13, 2019	May 14, 2019	Feb. 12, 2019
Subsequent Event [Line Items]
Cash distributions per limited partner unit (in usd per unit)		$ 0.905	$ 0.900	$ 0.890	$ 0.885	$ 0.880	$ 0.850	$ 0.820	$ 0.810
Subsequent Event
Subsequent Event [Line Items]
Cash distributions per limited partner unit (in usd per unit)	$ 0.910