10-Q

UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

______________________________________________________________________________________

FORM 10-Q

______________________________________________________________________________________

(Mark One)

ý QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934

For the quarterly period ended March 31, 2018

OR

¨ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934

For the transition period from ____________ to _____________                    

Commission File Number: 1-32225

_____________________________________________________________________________________

HOLLY ENERGY PARTNERS, L.P.

(Exact name of registrant as specified in its charter)

 ______________________________________________________________________________________

Delaware	20-0833098
(State or other jurisdiction of incorporation or organization)	(I.R.S. Employer Identification No.)
2828 N. Harwood, Suite 1300 Dallas, Texas	75201
(Address of principal executive offices)	(Zip code)

(214) 871-3555

(Registrant’s telephone number, including area code)

________________________________________________________________

(Former name, former address and former fiscal year, if changed since last report)

________________________________________________________________

Indicate by check mark whether the registrant (1) has filed all reports required to be filed by Section 13 or 15(d) of the Securities Exchange Act of 1934 during the preceding 12 months (or for such shorter period that the registrant was required to file such reports), and (2) has been subject to such filing requirements for the past 90 days.     Yes  ý    No  ¨

Indicate by check mark whether the registrant has submitted electronically and posted on its corporate Web site, if any, every Interactive Data File required to be submitted and posted pursuant to Rule 405 of Regulation S-T (§232.405 of this chapter) during the preceding 12 months (or for such shorter period that the registrant was required to submit and post such files).    Yes   ý    No  ¨

Indicate by check mark whether the registrant is a large accelerated filer, an accelerated filer, a non-accelerated filer smaller reporting company, or an emerging growth company. See the definitions of “large accelerated filer,” “accelerated filer,” “smaller reporting company” and “emerging growth” company in Rule 12b-2 of the Exchange Act.

Large accelerated filer	ý	Accelerated filer	¨	Non-accelerated filer	¨	Smaller reporting company	¨
Emerging growth company	¨

If an emerging growth company, indicate by check mark if the registrant has elected not to use the extended transition period for complying with any new or revised financial accounting standards provided pursuant to Section 13(a) of the Exchange Act. ¨

Indicate by check mark whether the registrant is a shell company (as defined by Rule 12b-2 of the Exchange Act).    Yes  ¨ No  ý

The number of the registrant’s outstanding common units at April 27, 2018, was 105,421,124.

Table of Contentsril 19,

HOLLY ENERGY PARTNERS, L.P.

INDEX

	FORWARD-LOOKING STATEMENTS		3
PART I. FINANCIAL INFORMATION			4
	Item 1.	Financial Statements (Unaudited)	4
		Consolidated Balance Sheets	4
		Consolidated Statements of Income	5
		Consolidated Statements of Comprehensive Income	6
		Consolidated Statements of Cash Flows	7
		Consolidated Statement of Equity	8
		Notes to Consolidated Financial Statements	9
	Item 2.	Management's Discussion and Analysis of Financial Condition and Results of Operations	28
	Item 3.	Quantitative and Qualitative Disclosures About Market Risk	39
	Item 4.	Controls and Procedures	39
PART II. OTHER INFORMATION			40
	Item 1.	Legal Proceedings	40
	Item 1A.	Risk Factors	40
	Item 6.	Exhibits	40
		Index to Exhibits	41
		SIGNATURES	41

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Table of Contentsril 19,

FORWARD-LOOKING STATEMENTS

This Quarterly Report on Form 10-Q contains certain “forward-looking statements” within the meaning of the federal securities laws. All statements, other than statements of historical fact included in this Form 10-Q, including, but not limited to, those under “Results of Operations” and “Liquidity and Capital Resources” in Item 2 “Management’s Discussion and Analysis of Financial Condition and Results of Operations” in Part I are forward-looking statements. Forward-looking statements use words such as “anticipate,” “project,” “expect,” “plan,” “goal,” “forecast,” “intend,” “should,” “would,” “could,” “believe,” “may,” and similar expressions and statements regarding our plans and objectives for future operations. These statements are based on our beliefs and assumptions and those of our general partner using currently available information and expectations as of the date hereof, are not guarantees of future performance and involve certain risks and uncertainties. Although we and our general partner believe that such expectations reflected in such forward-looking statements are reasonable, neither we nor our general partner can give assurance that our expectations will prove to be correct. All statements concerning our expectations for future results of operations are based on forecasts for our existing operations and do not include the potential impact of any future acquisitions. Our forward-looking statements are subject to a variety of risks, uncertainties and assumptions. If one or more of these risks or uncertainties materialize, or if underlying assumptions prove incorrect, our actual results may vary materially from those anticipated, estimated, projected or expected. Certain factors could cause actual results to differ materially from results anticipated in the forward-looking statements. These factors include, but are not limited to:

• risks and uncertainties with respect to the actual quantities of petroleum products and crude oil shipped on our pipelines and/or terminalled, stored or throughput in our terminals;

• the economic viability of HollyFrontier Corporation, Delek US Holdings, Inc. and our other customers;

• the demand for refined petroleum products in markets we serve;

• our ability to purchase and integrate future acquired operations;

• our ability to complete previously announced or contemplated acquisitions;

• the availability and cost of additional debt and equity financing;

• the possibility of reductions in production or shutdowns at refineries utilizing our pipeline and terminal facilities;

• the effects of current and future government regulations and policies;

• our operational efficiency in carrying out routine operations and capital construction projects;

• the possibility of terrorist attacks and the consequences of any such attacks;

• general economic conditions;

• the impact of recent changes in the tax laws and regulations that affect master limited partnerships; and

• other financial, operational and legal risks and uncertainties detailed from time to time in our Securities and Exchange Commission filings.

Cautionary statements identifying important factors that could cause actual results to differ materially from our expectations are set forth in this Form 10-Q, including, without limitation, the forward-looking statements that are referred to above. When considering forward-looking statements, you should keep in mind the known material risk factors and other cautionary statements set forth in our Annual Report on Form 10-K for the year ended December 31, 2017, in “Management’s Discussion and Analysis of Financial Condition and Results of Operations” and in “Risk Factors.” All forward-looking statements included in this Form 10-Q and all subsequent written or oral forward-looking statements attributable to us or persons acting on our behalf are expressly qualified in their entirety by these cautionary statements. The forward-looking statements speak only as of the date made and, other than as required by law, we undertake no obligation to publicly update or revise any forward-looking statements, whether as a result of new information, future events or otherwise.

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Table of Contentsril 19,

PART I. FINANCIAL INFORMATION

Item 1. Financial Statements

HOLLY ENERGY PARTNERS, L.P.

CONSOLIDATED BALANCE SHEETS

(In thousands, except unit data)

	March 31, 2018		December 31, 2017
	(Unaudited)
ASSETS
Current assets:
Cash and cash equivalents	$	8,565	$	7,776
Accounts receivable:
Trade	14,534		12,803
Affiliates	41,631		51,501
	56,165		64,304
Prepaid and other current assets	3,008		2,311
Total current assets	67,738		74,391
Properties and equipment, net	1,561,054		1,569,471
Intangible assets, net	125,427		129,463
Goodwill	268,166		266,716
Equity method investments	84,678		85,279
Other assets	27,726		28,794
Total assets	$	2,134,789	$	2,154,114
LIABILITIES AND EQUITY
Current liabilities:
Accounts payable:
Trade	$	13,213	$	14,547
Affiliates	10,741		7,725
	23,954		22,272
Accrued interest	6,079		13,256
Deferred revenue	8,497		9,598
Accrued property taxes	6,136		4,652
Other current liabilities	7,602		5,707
Total current liabilities	52,268		55,485
Long-term debt	1,390,952		1,507,308
Other long-term liabilities	15,711		15,843
Deferred revenue	47,740		47,272
Class B unit	43,870		43,141
Equity:
Partners’ equity:
Common unitholders (105,421,124 and 101,568,955 units issued and outstanding     at March 31, 2018 and December 31, 2017, respectively)	493,404		393,959
Noncontrolling interest	90,844		91,106
Total equity	584,248		485,065
Total liabilities and equity	$	2,134,789	$	2,154,114

See accompanying notes.

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Table of Contentsril 19,

HOLLY ENERGY PARTNERS, L.P.

CONSOLIDATED STATEMENTS OF INCOME

(Unaudited)

(In thousands, except per unit data)

	Three Months Ended March 31,
	2018			2017
Revenues:
Affiliates	$	101,428		$	89,025
Third parties	27,456			16,609
	128,884			105,634
Operating costs and expenses:
Operations (exclusive of depreciation and amortization)	36,202			32,489
Depreciation and amortization	25,142			18,777
General and administrative	3,122			2,634
	64,466			53,900
Operating income	64,418			51,734
Other income (expense):
Equity in earnings of equity method investments	1,279			1,840
Interest expense	(17,581		)	(13,539		)
Interest income	515			102
Loss on early extinguishment of debt	—			(12,225		)
Gain on sale of assets and other	86			73
	(15,701		)	(23,749		)
Income before income taxes	48,717			27,985
State income tax benefit (expense)	(82		)	(106		)
Net income	48,635			27,879
Allocation of net income attributable to noncontrolling interests	(2,467		)	(2,316		)
Net income attributable to the partners	46,168			25,563
General partner interest in net income attributable to the Partnership, including incentive distributions	—			(17,138		)
Limited partners’ interest in net income	$	46,168		$	8,425
Limited partners’ per unit interest in earnings—basic and diluted	$	0.44		$	0.13
Weighted average limited partners’ units outstanding	103,836			63,113

See accompanying notes.

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HOLLY ENERGY PARTNERS, L.P.

CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME

(Unaudited)

(In thousands)

	Three Months Ended March 31,
	2018			2017
Net income	$	48,635		$	27,879
Other comprehensive income:
Change in fair value of cash flow hedging instruments	—			76
Reclassification adjustment to net income on partial settlement of cash flow hedge	—			(13		)
Other comprehensive income	—			63
Comprehensive income before noncontrolling interest	48,635			27,942
Allocation of comprehensive income to noncontrolling interests	(2,467		)	(2,316		)
Comprehensive income attributable to the partners	$	46,168		$	25,626

See accompanying notes.

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Table of Contentsril 19,

HOLLY ENERGY PARTNERS, L.P.

CONSOLIDATED STATEMENTS OF CASH FLOWS

(Unaudited)

(In thousands)

	Three Months Ended March 31,
	2018			2017
Cash flows from operating activities
Net income	$	48,635		$	27,879
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization	25,142			18,777
(Gain) loss on sale of assets	(22		)	(58		)
Amortization of deferred charges	757			770
Equity-based compensation expense	837			433
Equity in earnings of equity method investments, net of distributions	243			273
Loss on early extinguishment of debt	—			12,225
(Increase) decrease in operating assets:
Accounts receivable—trade	(1,731		)	375
Accounts receivable—affiliates	9,870			7,733
Prepaid and other current assets	(697		)	(282		)
Increase (decrease) in operating liabilities:
Accounts payable—trade	(814		)	(1,122		)
Accounts payable—affiliates	3,016			(9,943		)
Accrued interest	(7,177		)	(13,551		)
Deferred revenue	687			551
Accrued property taxes	1,484			9
Other current liabilities	375			(328		)
Other, net	(85		)	(106		)
Net cash provided by operating activities	80,520			43,635
Cash flows from investing activities
Additions to properties and equipment	(12,612		)	(8,265		)
Proceeds from sale of assets	22			424
Distributions in excess of equity in earnings of equity investments	358			3,016
Net cash used for investing activities	(12,232		)	(4,825		)
Cash flows from financing activities
Borrowings under credit agreement	227,000			380,000
Repayments of credit agreement borrowings	(343,500		)	(86,000		)
Redemption of 6.5% Senior Notes	—			(309,750		)
Proceeds from issuance of common units	114,529			37,563
Distributions to HEP unitholders	(63,496		)	(54,805		)
Distributions to noncontrolling interest	(2,000		)	(2,000		)
Distribution to HFC for El Dorado tanks	—			(103		)
Contributions from general partner	297			—
Units withheld for tax withholding obligations	(58		)	(35		)
Deferred financing costs	6			—
Other	(277		)	(330		)
Net cash used by financing activities	(67,499		)	(35,460		)
Cash and cash equivalents
Increase (decrease) for the period	789			3,350
Beginning of period	7,776			3,657
End of period	$	8,565		$	7,007

See accompanying notes.

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Table of Contentsril 19,

HOLLY ENERGY PARTNERS, L.P.

CONSOLIDATED STATEMENT OF EQUITY

(Unaudited)

(In thousands)

	Common Units			Noncontrolling Interest			Total Equity
Balance December 31, 2017	$	393,959		$	91,106		$	485,065
Issuance of common units	114,376			—			114,376
Distributions to HEP unitholders	(63,496		)	—			(63,496		)
Distributions to noncontrolling interest	—			(2,000		)	(2,000		)
Amortization of restricted and performance units	837			—			837
Class B unit accretion	(729		)	—			(729		)
Cumulative transition adjustment for adoption of revenue recognition standard	1,320			—			1,320
Other	240			—			240
Net income	46,897			1,738			48,635
Balance March 31, 2018	$	493,404		$	90,844		$	584,248

See accompanying notes.

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Table of Contentsril 19,

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS

(Unaudited)

Note 1: Description of Business and Presentation of Financial Statements

Holly Energy Partners, L.P. (“HEP”), together with its consolidated subsidiaries, is a publicly held master limited partnership. As of March 31, 2018, HollyFrontier Corporation (“HFC”) and its subsidiaries own a 57% limited partner interest and the non-economic general partner interest in HEP. We commenced operations on July 13, 2004, upon the completion of our initial public offering. In these consolidated financial statements, the words “we,” “our,” “ours” and “us” refer to HEP unless the context otherwise indicates.

On October 31, 2017, we closed on an equity restructuring transaction with HEP Logistics Holdings, L.P. (“HEP Logistics”), a wholly-owned subsidiary of HFC and the general partner of HEP, pursuant to which the incentive distribution rights (“IDRs”) held by HEP Logistics were canceled, and HEP Logistics' 2% general partner interest in HEP was converted into a non-economic general partner interest in HEP. In consideration, we issued 37,250,000 of our common units to HEP Logistics. In addition, HEP Logistics agreed to waive $2.5 million of limited partner cash distributions for each of twelve consecutive quarters beginning with the first quarter the units issued as consideration were eligible to receive distributions. As a result of this transaction, no distributions were made on the general partner interest after October 31, 2017.

On January 25, 2018, we entered into a common unit purchase agreement in which certain purchasers agreed to purchase in a private placement 3,700,000 common units representing limited partner interests, at a price of $29.73 per common unit. The private placement closed on February 6, 2018, and we received proceeds of approximately $110 million, which were used to repay indebtedness under our revolving credit facility.

We own and operate petroleum product and crude oil pipelines, terminal, tankage and loading rack facilities and refinery processing units that support HFC’s refining and marketing operations in the Mid-Continent, Southwest and Northwest regions of the United States and Delek US Holdings, Inc.’s (“Delek”) refinery in Big Spring, Texas. Additionally, we own a 75% interest in UNEV Pipeline, LLC (“UNEV”), a 50% interest in the Osage Pipe Line Company, LLC (“Osage”) and a 50% interest in the Cheyenne Pipeline LLC.

We operate in two reportable segments, a Pipelines and Terminals segment and a Refinery Processing Unit segment. Disclosures around these segments are discussed in Note 15.

We generate revenues by charging tariffs for transporting petroleum products and crude oil through our pipelines, by charging fees for terminalling and storing refined products and other hydrocarbons, providing other services at our storage tanks and terminals and by charging fees for processing hydrocarbon feedstocks through our refinery processing units. We do not take ownership of products that we transport, terminal, store or process, and therefore, we are not exposed directly to changes in commodity prices.

The consolidated financial statements included herein have been prepared without audit, pursuant to the rules and regulations of the United States Securities and Exchange Commission (the “SEC”). The interim financial statements reflect all adjustments, which, in the opinion of management, are necessary for a fair presentation of our results for the interim periods. Such adjustments are considered to be of a normal recurring nature. Although certain notes and other information required by U.S. generally accepted accounting principles (“GAAP”) have been condensed or omitted, we believe that the disclosures in these consolidated financial statements are adequate to make the information presented not misleading. These consolidated financial statements should be read in conjunction with our Annual Report on Form 10-K for the year ended December 31, 2017. Results of operations for interim periods are not necessarily indicative of the results of operations that will be realized for the year ending December 31, 2018.

Principles of Consolidation and Common Control Transactions

The consolidated financial statements include our accounts and those of subsidiaries and joint ventures that we control. All significant intercompany transactions and balances have been eliminated.

Most of our acquisitions from HFC occurred while we were a consolidated variable interest entity (“VIE”) of HFC. Therefore, as an entity under common control with HFC, we recorded these acquisitions on our balance sheets at HFC's historical basis instead of our purchase price or fair value.

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Accounting Pronouncements Adopted During the Periods Presented

Share-Based Compensation

In March 2016, an accounting standard update was issued which simplifies the accounting for employee share-based payment transactions, including the accounting for income taxes, forfeitures and statutory tax withholding requirements, as well as classification in the statement of cash flows. We adopted this standard effective January 1, 2017, with no impact to our financial condition or results of operations. The new standard also requires that employee taxes paid when an employer withholds units for

tax withholding purposes be reported as financing activities in the statement of cash flows on a retrospective basis. Previously, this activity was included in our operating activities. The impact of this change for the three months ended March 31, 2017 was not material to our consolidated statement of cash flows. Finally, consistent with our existing policy, we have elected to account for forfeitures on an estimated basis.

Revenue Recognition

In May 2014, an accounting standard update was issued requiring revenue to be recognized when promised goods or services are transferred to customers in an amount that reflects the expected consideration for these goods or services. This standard had an effective date of January 1, 2018, and we have accounted for the new guidance using the modified retrospective implementation method, whereby a cumulative effect adjustment is recorded to retained earnings as of the date of initial application. In preparing

for adoption, we evaluated the terms, conditions and performance obligations under our existing contracts with customers. Furthermore, we implemented policies to comply with this new standard. See Note 3 for additional information on our revenue recognition policies.

Business Combinations

In December 2014, an accounting standard update was issued to provide new guidance on the definition of a business in relation to accounting for identifiable intangible assets in business combinations. This standard had an effective date of January 1, 2018, and had no effect on our financial condition, results of operations or cash flows.

Financial Assets and Liabilities

In January 2016, an accounting standard update was issued requiring changes in the accounting and disclosures for financial instruments. This standard was effective beginning with our 2018 reporting year and had no effect on our financial condition, results of operations or cash flows.

Accounting Pronouncements Not Yet Adopted

Leases

In February 2016, an accounting standard update was issued requiring leases to be measured and recognized as a lease liability, with a corresponding right-of-use asset on the balance sheet. This standard has an effective date of January 1, 2019, and we are evaluating the impact of this standard. In preparing for adoption, we have identified, reviewed and evaluated contracts containing lease and embedded lease arrangements. Additionally, we have acquired software and are implementing systems to facilitate lease capture and related accounting treatment.

Note 2: Acquisitions

SLC Pipeline and Frontier Aspen

On October 31, 2017, we acquired the remaining 75% interest in SLC Pipeline LLC (“SLC Pipeline”) and the remaining 50% interest in Frontier Aspen LLC (“Frontier Aspen”) from subsidiaries of Plains All American Pipeline, L,P. (“Plains”), for cash consideration of $250 million. Prior to this acquisition, we held noncontrolling interests of 25% of SLC Pipeline and 50% of Frontier Aspen. As a result of the acquisitions, SLC Pipeline and Frontier Aspen are wholly-owned subsidiaries of HEP.

These acquisitions were accounted for as a business combination achieved in stages. Our pre-existing equity method investments in SLC Pipeline and Frontier Aspen were remeasured at an acquisition date fair value of $112 million since we now have a controlling interest, and we recognized a gain on the remeasurement in the fourth quarter of 2017 of $36.3 million. The fair value of our pre-existing equity method investments in SLC Pipeline and Frontier Aspen was estimated using Level 3 Inputs under the income method for these entities, adjusted for lack of control and marketability.

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The total consideration of $363.8 million, consisting of initial cash consideration of $250 million, working capital adjustments of $1.8 million and the fair value of our preexisting equity method investments in SLC Pipeline and Frontier Aspen of $112 million, was allocated to the acquisition date fair value of assets and liabilities acquired as of the October 31, 2017 acquisition date, with the excess purchase price recorded as goodwill. The following summarizes the value of assets and liabilities acquired:

	(in thousands)
Cash and cash equivalents	$	4,609
Accounts receivable	4,919
Prepaid and other current assets	253
Properties and equipment	277,016
Intangible assets	70,182
Goodwill	11,615
Accounts payable	(3,311		)
Accrued property taxes	(1,438		)
Other current liabilities	(65		)
Net assets acquired	$	363,780

We have assigned a preliminary estimate of fair value to the assets acquired and liabilities assumed, and, therefore, our allocation

may change once all needed information has become available and we complete our valuations.

SLC Pipeline is the owner of a 95-mile crude pipeline that transports crude oil into the Salt Lake City area from the Utah terminal

of the Frontier Pipeline (defined below) and from Wahsatch Station. Frontier Aspen is the owner of a 289-mile crude pipeline from Casper, Wyoming to Frontier Station, Utah (the “Frontier Pipeline”) that supplies Canadian and Rocky Mountain crudes to Salt Lake City area refiners through a connection to the SLC Pipeline.

Note 3: Revenues

Revenues are generally recognized as products are shipped through our pipelines and terminals, feedstocks are processed through our refinery processing units or other services are rendered. The majority of our contracts with customers meet the definition of a lease since (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 the customer will take more than a minor amount of the output associated with the specified property, plant, or equipment. Therefore, we bifurcate the consideration received between lease and service revenue. The service component is within the scope of Accounting Standards Codification (“ASC”) 606, which largely codified ASU 2014-09.

Several of our contracts include incentive or reduced tariffs once a certain quarterly volume is met. Revenue from the variable element of these transactions is recognized based on the actual volumes shipped as it relates specifically to rendering the services during the applicable quarter.

We adopted the new revenue recognition standard (see Note 1) using the modified retrospective method, whereby the cumulative effect of applying the new standard was recorded as an adjustment to the opening balance of retained earnings as well as the carrying amounts of assets and liabilities as of January 1, 2018, which had no impact on our cash flows. The following table reflects the cumulative effect of adoption as of January 1, 2018:

	Prior to Adoption		Increase (Decrease)			As Adjusted
	(In millions)
Deferred revenue	$	9,598	$	(1,320	)	$	8,278
Partners’ equity: Common unitholders	$	393,959	$	1,320		$	395,279

The majority of our long-term transportation contracts specify minimum volume requirements, whereby, we bill a customer for a minimum level of shipments in the event a customer ships below their contractual requirements. If there are no future performance obligations, we will recognize these deficiency payments in revenue.

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In certain of these throughput agreements, a customer may later utilize such shortfall billings as credit towards future volume shipments in excess of its minimum levels within its respective contractual shortfall make-up period. Such amounts represent an obligation to perform future services, which may be initially deferred and later recognized as revenue based on estimated future shipping levels, including the likelihood of a customer’s ability to utilize such amounts prior to the end of the contractual shortfall make-up period. We recognize the service portion of these deficiency payments in revenue when we do not expect we will be required to satisfy these performance obligations in the future based on the pattern of rights exercised by the customer. During the first quarter of 2018, we recognized $3.6 million of these deficiency payments in revenue, of which $2.2 million related to deficiency payments billed in prior periods, and we have recorded $2.5 million as deferred revenue.

	March 31, 2018			January 1, 2018
	(In thousands)
Contract asset	$	1,711		$	—
Contract liability	$	(2,479	)	$	(2,713	)

The contract assets and liabilities include both lease and service components. We recognized $2.2 million in revenue during the three months ended March 31, 2018, that was previously included in contract liability as of January 1, 2018.

As of March 31, 2018, we expect to recognize $2.5 billion in revenue related to our unfulfilled performance obligations under the terms of our long-term throughput agreements and operating leases expiring in 2019 through 2036. These agreements provide for changes in the minimum revenue guarantees annually for increases or decreases in the Producer Price Index (“PPI”) or Federal Energy Regulatory Commission (“FERC”) index, with certain contracts having provisions that limit the level of the rate increases or decreases. We expect to recognize revenue for these unfulfilled performance obligation as shown in the table below (amounts shown in table include both service and lease revenues):

Years Ending December 31,	(In millions)
Remainder of 2018	$	284
2019	350
2020	300
2021	293
2022	267
Thereafter	1,004
Total	$	2,498

Payment terms under our contracts with customers are consistent with industry norms and are typically payable within 10 to 30 days of the date of invoice.

Disaggregated revenues are as follows:

	Three Months Ended March 31,
	2018		2017
	(In thousands)
Pipelines	$	72,169	$	52,447
Terminals, tanks and loading racks	38,181		33,807
Refinery processing units	18,534		19,380
	$	128,884	$	105,634

During the three months ended March 31, 2018, lease revenues amounted to $71.0 million and service revenues amounted to $57.9 million. Both of these revenues were recorded within affiliates and third parties revenues on our consolidated statement of income.

Note 4: Financial Instruments

Our financial instruments consist of cash and cash equivalents, accounts receivable, accounts payable, debt and interest rate swaps. The carrying amounts of cash equivalents, accounts receivable and accounts payable approximate fair value due to the short-term maturity of these instruments. Debt consists of outstanding principal under our revolving credit agreement (which approximates fair value as interest rates are reset frequently at current interest rates) and our fixed interest rate senior notes.

Fair value measurements are derived using inputs (assumptions that market participants would use in pricing an asset or liability) including assumptions about risk. GAAP categorizes inputs used in fair value measurements into three broad levels as follows:

• (Level 1) Quoted prices in active markets for identical assets or liabilities.

• (Level 2) Observable inputs other than quoted prices included in Level 1, such as quoted prices for similar assets and liabilities in active markets, similar assets and liabilities in markets that are not active or can be corroborated by observable market data.

• (Level 3) Unobservable inputs that are supported by little or no market activity and that are significant to the fair value of the assets or liabilities. This includes valuation techniques that involve significant unobservable inputs.

The carrying amounts and estimated fair values of our senior notes were as follows:

		March 31, 2018				December 31, 2017
Financial Instrument	Fair Value Input Level	Carrying Value		Fair Value		Carrying Value		Fair Value
		(In thousands)
Liabilities:
6% Senior notes	Level 2	495,452		511,740		495,308		525,120
		$	495,452	$	511,740	$	495,308	$	525,120

Level 2 Financial Instruments

Our senior notes are measured at fair value using Level 2 inputs. The fair value of the senior notes is based on market values provided by a third-party bank, which were derived using market quotes for similar type debt instruments. See Note 8 for additional information.

Note 5: Properties and Equipment

The carrying amounts of our properties and equipment are as follows:

	March 31, 2018		December 31, 2017
	(In thousands)
Pipelines, terminals and tankage	$	1,541,596	$	1,541,722
Refinery assets	347,338		347,338
Land and right of way	86,445		86,484
Construction in progress	24,134		12,029
Other	36,210		35,659
	2,035,723		2,023,232
Less accumulated depreciation	474,669		453,761
	$	1,561,054	$	1,569,471

We capitalized $0.1 million and $0.2 million during the three months ended March 31, 2018 and 2017, respectively, in interest attributable to construction projects.

Depreciation expense was $20.9 million and $16.9 million for the three months ended March 31, 2018 and 2017, respectively, and includes depreciation of assets acquired under capital leases.

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Note 6: Intangible Assets

Intangible assets include transportation agreements and customer relationships that represent a portion of the total purchase price of certain assets acquired from Delek in 2005, from HFC in 2008 prior to HEP becoming a consolidated VIE of HFC and from Plains in 2017.

The carrying amounts of our intangible assets are as follows:

	Useful Life	March 31, 2018		December 31, 2017
		(In thousands)
Delek transportation agreement	30 years	$	59,933	$	59,933
HFC transportation agreement	10-15 years	75,131		75,131
Customer relationships	10 years	69,282		69,282
Other		50		50
		204,396		204,396
Less accumulated amortization		78,969		74,933
		$	125,427	$	129,463

Amortization expense was $4.0 million and $1.7 million for the three months ended March 31, 2018 and 2017, respectively. We estimate amortization expense to be $14.0 million for each of the next four years and $9.8 million in 2023.

We have additional transportation agreements with HFC resulting from historical transactions consisting of pipeline, terminal and tankage assets contributed to us or acquired from HFC. These transactions occurred while we were a consolidated VIE of HFC; therefore, our basis in these agreements is zero and does not reflect a step-up in basis to fair value.

Note 7: Employees, Retirement and Incentive Plans

Direct support for our operations is provided by Holly Logistic Services, L.L.C. (“HLS”), an HFC subsidiary, which utilizes personnel employed by HFC who are dedicated to performing services for us. Their costs, including salaries, bonuses, payroll taxes, benefits and other direct costs, are charged to us monthly in accordance with an omnibus agreement that we have with HFC. These employees participate in the retirement and benefit plans of HFC. Our share of retirement and benefit plan costs was $1.8 million and $1.7 million for the three months ended March 31, 2018 and 2017, respectively.

Under HLS’s secondment agreement with HFC (the “Secondment Agreement”), certain employees of HFC are seconded to HLS to provide operational and maintenance services for certain of our processing, refining, pipeline and tankage assets, and HLS reimburses HFC for its prorated portion of the wages, benefits, and other costs related to these employees.

We have a Long-Term Incentive Plan for employees and non-employee directors who perform services for us. The Long-Term Incentive Plan consists of four components: restricted or phantom units, performance units, unit options and unit appreciation rights. Our accounting policy for the recognition of compensation expense for awards with pro-rata vesting (a significant proportion of our awards) is to expense the costs ratably over the vesting periods.

As of March 31, 2018, we had two types of incentive-based awards outstanding, which are described below. The compensation cost charged against income was $0.8 million and $0.3 million for the three months ended March 31, 2018 and 2017, respectively. We currently purchase units in the open market instead of issuing new units for settlement of all unit awards under our Long-Term Incentive Plan. As of March 31, 2018, 2,500,000 units were authorized to be granted under our Long-Term Incentive Plan, of which 1,323,089 have not yet been granted, assuming no forfeitures of the unvested units and full achievement of goals for the unvested performance units.

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Restricted and Phantom Units

Under our Long-Term Incentive Plan, we grant restricted units to non-employee directors and phantom units to selected employees who perform services for us, with most awards vesting over a period of one to three years. We previously granted restricted units to selected employees who perform services for us, which vest over a period of three years. Although full ownership of the units does not transfer to the recipients until the units vest, the recipients have distribution rights on these units from the date of grant, and the recipients of the restricted units have voting rights on the restricted units from the date of grant.

The fair value of each restricted or phantom unit award is measured at the market price as of the date of grant and is amortized on a straight-line basis over the requisite service period for each separately vesting portion of the award.

A summary of restricted and phantom unit activity and changes during the three months ended March 31, 2018, is presented below:

Restricted and Phantom Units	Units	Weighted Average Grant-Date Fair Value
Outstanding at January 1, 2018 (nonvested)	119,009	$	34.77
Granted	12,890	30.23
Outstanding at March 31, 2018 (nonvested)	131,899	$	34.33

No restricted units were vested and transferred to recipients during the three months ended March 31, 2018. As of March 31, 2018, there was $2.3 million of total unrecognized compensation expense related to unvested restricted and phantom unit grants, which is expected to be recognized over a weighted-average period of 1.3 years.

Performance Units

Under our Long-Term Incentive Plan, we grant performance units to selected officers who perform services for us. Performance units granted are payable in common units at the end of a three-year performance period based upon the growth in our distributable cash flow per common unit over the performance period. As of March 31, 2018, estimated unit payouts for outstanding nonvested performance unit awards ranged between 100% and 150% of the target number of performance units granted.

We granted 2,764 performance units during the three months ended March 31, 2018. Performance units granted in 2017 and 2018 vest over a three-year performance period ending December 31, 2020 and 2021, respectively, and are payable in HEP common units. The number of units actually earned will be based on the growth of our distributable cash flow per common unit over the performance period, and can range from 50% to 150% of the target number of performance units granted. Although common units are not transferred to the recipients until the performance units vest, the recipients have distribution rights with respect to the common units from the date of grant.

A summary of performance unit activity and changes for the three months ended March 31, 2018, is presented below:

Performance Units	Units
Outstanding at January 1, 2018 (nonvested)	36,911
Granted	2,764
Vesting and transfer of common units to recipients	(4,283	)
Outstanding at March 31, 2018 (nonvested)	35,392

The grant date fair value of performance units vested and transferred to recipients during both the three months ended March 31, 2018 and 2017 was $0.1 million. Based on the weighted average fair value of performance units outstanding at March 31, 2018, of $1.2 million, there was $0.8 million of total unrecognized compensation expense related to nonvested performance units, which is expected to be recognized over a weighted-average period of 1.8 years.

During the three months ended March 31, 2018, we did not purchase any common units in the open market for the issuance and

settlement of unit awards under our Long-Term Incentive Plan.

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Note 8: Debt

Credit Agreement

We have a $1.4 billion senior secured revolving credit facility (the “Credit Agreement”) expiring in July 2022. The Credit Agreement is available to fund capital expenditures, investments, acquisitions, distribution payments and working capital and for general partnership purposes. The Credit Agreement is also available to fund letters of credit up to a $50 million sub-limit, and it contains an accordion feature giving us the ability to increase the size of the facility by up to $300 million with additional lender commitments.

Our obligations under the Credit Agreement are collateralized by substantially all of our assets, and indebtedness under the Credit Agreement is guaranteed by our material, wholly-owned subsidiaries.  The Credit Agreement requires us to maintain compliance with certain financial covenants consisting of total leverage, senior secured leverage, and interest coverage.  It also limits or restricts our ability to engage in certain activities.  If, at any time prior to the expiration of the Credit Agreement, HEP obtains two investment grade credit ratings, the Credit Agreement will become unsecured and many of the covenants, limitations, and restrictions will be eliminated.

We may prepay all loans at any time without penalty, except for tranche breakage costs.  If an event of default exists under the Credit Agreement, the lenders will be able to accelerate the maturity of all loans outstanding and exercise other rights and remedies.  We were in compliance with the covenants as of March 31, 2018.

Senior Notes

On July 19, 2016, we closed a private placement of $400 million in aggregate principal amount of 6% senior unsecured notes due in 2024 (the “ 6% Senior Notes”). On September 22, 2017, we closed a private placement of an additional $100 million in aggregate principal amount of the 6% Senior Notes for a combined aggregate principal amount outstanding of $500 million maturing in 2024.

The 6% Senior Notes are unsecured and impose certain restrictive covenants, including limitations on our ability to incur additional indebtedness, make investments, sell assets, incur certain liens, pay distributions, enter into transactions with affiliates and enter into mergers. We were in compliance with the restrictive covenants for the 6% Senior Notes as of March 31, 2018. At any time when the 6% Senior Notes are rated investment grade by both Moody’s and Standard & Poor’s and no default or event of default exists, we will not be subject to many of the foregoing covenants. Additionally, we have certain redemption rights at varying premiums over face value under the 6% Senior Notes.

Indebtedness under the 6% Senior Notes is guaranteed by our wholly-owned subsidiaries.

On January 4, 2017, we redeemed the $300 million aggregate principal amount of 6.5% senior notes due in 2020 (the “6.5% Senior Notes”) at a redemption cost of $309.8 million at which time we recognized a $12.2 million early extinguishment loss consisting of a $9.8 million debt redemption premium and unamortized discount and financing costs of $2.4 million. We funded the redemption with borrowings under our Credit Agreement.

Long-term Debt

The carrying amounts of our long-term debt are as follows:

	March 31, 2018			December 31, 2017
	(In thousands)
Credit Agreement
Amount outstanding	$	895,500		$	1,012,000
6% Senior Notes
Principal	500,000			500,000
Unamortized premium and debt issuance costs	(4,548		)	(4,692		)
	495,452			495,308
Total long-term debt	$	1,390,952		$	1,507,308

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Interest Rate Risk Management

The two interest rate swaps that hedged our exposure to the cash flow risk caused by the effects of LIBOR changes on $150 million of Credit Agreement advances matured on July 31, 2017. The swaps had effectively converted $150 million of our LIBOR based debt to fixed rate debt.

Interest Expense and Other Debt Information

Interest expense consists of the following components:

	Three Months Ended March 31,
	2018		2017
	(In thousands)
Interest on outstanding debt:
Credit Agreement, net of interest on interest rate swaps	$	8,944	$	6,449
6.5% Senior Notes	—		162
6% Senior Notes	7,500		6,000
Amortization of discount and deferred debt issuance costs	757		770
Commitment fees and other	477		354
Total interest incurred	17,678		13,735
Less capitalized interest	97		196
Net interest expense	$	17,581	$	13,539
Cash paid for interest	$	16,599	$	26,517

Capital Lease Obligations

We have capital lease obligations related to vehicle leases with initial terms of 33 to 48 months. Such obligations totaled $2.2 million and $1.9 million as of March 31, 2018 and December 31, 2017, respectively, and are included in other current and long-term liabilities on the consolidated balance sheets. The total cost of assets under capital leases was $5.7 million and $5.1 million as of March 31, 2018 and December 31, 2017, respectively, with accumulated depreciation of $3.5 million and $3.3 million as of March 31, 2018 and December 31, 2017, respectively. We include depreciation of capital leases in depreciation and amortization in our consolidated statements of income.

Note 9: Significant Customers

All revenues are domestic revenues, of which 84% are currently generated from our two largest customers: HFC and Delek.

The following table presents the percentage of total revenues generated by each of these customers:

	Three Months Ended March 31,
	2018		2017
HFC	79	%	84	%
Delek	5	%	8	%

Note 10: Related Party Transactions

We serve HFC’s refineries under long-term pipeline, terminal and tankage throughput agreements, and refinery processing unit tolling agreements expiring from 2019 to 2036. Under these agreements, HFC agrees to transport, store and process throughput volumes of refined product, crude oil and feedstocks on our pipelines, terminals, tankage, loading rack facilities and refinery processing units that result in minimum annual payments to us. These minimum annual payments or revenues are subject to annual rate adjustments on July 1st each year generally based on increases or decreases in PPI or the FERC index. As of March 31, 2018, these agreements with HFC require minimum annualized payments to us of $332.7 million.

If HFC fails to meet its minimum volume commitments under the agreements in any quarter, it will be required to pay us the amount of any shortfall in cash by the last day of the month following the end of the quarter. Under certain of these agreements, a shortfall payment may be applied as a credit in the following four quarters after its minimum obligations are met.

Under certain provisions of an omnibus agreement we have with HFC (the “Omnibus Agreement”), we pay HFC an annual administrative fee (currently $2.5 million) for the provision by HFC or its affiliates of various general and administrative services to us. This fee does not include the salaries of personnel employed by HFC who perform services for us on behalf of HLS or the cost of their employee benefits, which are charged to us separately by HFC. Also, we reimburse HFC and its affiliates for direct expenses they incur on our behalf.

Related party transactions with HFC are as follows:

• Revenues received from HFC were $101.4 million and $89.0 million for the three months ended March 31, 2018 and 2017, respectively.

• HFC charged us general and administrative services under the Omnibus Agreement of $0.6 million for each of the three months ended March 31, 2018 and 2017.

• We reimbursed HFC for costs of employees supporting our operations of $12.7 million and $11.4 million for the three months ended March 31, 2018 and 2017, respectively.

• HFC reimbursed us $1.2 million and $1.3 million for the three months ended March 31, 2018 and 2017, respectively, for expense and capital projects.

• We distributed $36.3 million and $30.3 million in the three months ended March 31, 2018 and 2017, respectively, to HFC as regular distributions on its common units in the three months ended March 31, 2018 and on its common units and general partner interest, including general partner incentive distributions, in the three months ended March 31, 2017.

• Accounts receivable from HFC were $41.6 million and $51.5 million at March 31, 2018, and December 31, 2017, respectively.

• Accounts payable to HFC were $10.7 million and $7.7 million at March 31, 2018, and December 31, 2017, respectively.

• Deferred revenue in the consolidated balance sheets at March 31, 2018 and December 31, 2017, includes $0.9 million and $4.4 million, respectively, relating to certain shortfall billings to HFC. It is possible that HFC may not exceed its minimum obligations to receive credit for any of the $0.9 million deferred at March 31, 2018.

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• We received operating lease payments from HFC for use of our Artesia and Tulsa railyards of $0.5 million and $0.1 million for the three months ended March 31, 2018 and 2017, respectively.

• On October 31, 2017, we closed on an equity restructuring transaction with HEP Logistics, a wholly-owned subsidiary of HFC and the general partner of HEP, pursuant to which the incentive distribution rights held by HEP Logistics were canceled, and HEP Logistics' 2% general partner interest in HEP was converted into a non-economic general partner interest in HEP. In consideration, we issued 37,250,000 of our common units to HEP Logistics. In addition, HEP Logistics agreed to waive $2.5 million of limited partner cash distributions for each of twelve consecutive quarters beginning with the first quarter the units issued as consideration were eligible to receive distributions.

Note 11: Partners’ Equity, Income Allocations and Cash Distributions

As of March 31, 2018, HFC held 59,630,030 of our common units, constituting a 57%limited partner interest in us, and held the

non-economic general partner interest. Additionally, HEP Logistics, our general partner, owned all incentive distribution rights through October 31, 2017, at which time we closed on an equity restructuring transaction with HEP Logistics pursuant to which the incentive distribution rights were canceled. See Note 1 for a description of this equity restructuring transaction.

On January 25, 2018, we entered into a common unit purchase agreement in which certain purchasers agreed to purchase in a private placement 3,700,000 common units representing limited partnership interests, at a price of $29.73 per common unit. The private placement closed on February 6, 2018, and we received proceeds of approximately $110 million, which were used to repay indebtedness under our Credit Agreement.

Continuous Offering Program

We have a continuous offering program under which we may issue and sell common units from time to time, representing limited partner interests, up to an aggregate gross sales amount of $200 million. For the three months ended March 31, 2018, HEP issued 152,169 units under this program, providing approximately $4.6 million in gross proceeds. As of March 31, 2018, HEP has issued 2,394,076 units under this program, providing $81.7 million in gross proceeds.

We intend to use our net proceeds for general partnership purposes, which may include funding working capital, repayment of debt, acquisitions and capital expenditures. Amounts repaid under our credit facility may be reborrowed from time to time.

Allocations of Net Income

Net income attributable to HEP is allocated to the partners based on their weighted-average ownership percentage during the period.

Prior to the equity restructuring of the general partner interest owned by HEP Logistics described in Note 1 that occurred on October 31, 2017, net income attributable to HEP was allocated between limited partners and the general partner interest in accordance with the provisions of the partnership agreement. HEP net income allocated to the general partner included incentive distributions that were declared subsequent to quarter end. After incentive distributions and other priority allocations were allocated to the general partner, the remaining net income attributable to HEP was allocated to the partners based on their weighted-average ownership percentage during the period.

The following table presents the allocation of the general partner interest in net income for the periods presented below:

	Three Months Ended March 31,
	2018		2017
	(In thousands)
General partner interest in net income	$	—	$	511
General partner incentive distribution	—		16,627
Total general partner interest in net income	$	—	$	17,138

Cash Distributions

On April 19, 2018, we announced our cash distribution for the first quarter of 2018 of $0.6550 per unit. The distribution is payable on all common units and will be paid May 10, 2018, to all unitholders of record on April 30, 2018. However, HEP Logistics will waive $2.5 million in limited partner cash distributions in accordance with the equity restructuring discussed in Note 1.

Prior to the equity restructuring of the general partner interest owned by HEP Logistics that occurred on October 31, 2017, our general partner, HEP Logistics, was entitled to incentive distributions if the amount we distributed with respect to any quarter exceeded specified target levels. After the restructuring of the general partner interest, the general partner interest was no longer entitled to any distributions.

The following table presents the allocation of our regular quarterly cash distributions to the general and limited partners for the periods in which they apply. Our distributions are declared subsequent to quarter end; therefore, the amounts presented do not reflect distributions paid during the periods presented below.

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	Three Months Ended March 31,
	2018		2017
	(In thousands, except per unit data)
General partner interest in distribution	$	—	$	1,148
General partner incentive distribution	—		16,627
Total general partner distribution	—		17,775
Limited partner distribution	66,551		39,632
Total regular quarterly cash distribution	$	66,551	$	57,407
Cash distribution per unit applicable to limited partners	$	0.6550	$	0.6200

As a master limited partnership, we distribute our available cash, which historically has exceeded our net income attributable to HEP because depreciation and amortization expense represents a non-cash charge against income. The result is a decline in our partners’ equity since our regular quarterly distributions have exceeded our quarterly net income attributable to HEP. Additionally, if the asset contributions and acquisitions from HFC had occurred while we were not a consolidated variable interest entity of HFC, our acquisition cost, in excess of HFC’s historical basis in the transferred assets, would have been recorded in our financial statements at the time of acquisition as increases to our properties and equipment and intangible assets instead of decreases to our partners’ equity.

Note 12: Net Income Per Limited Partner Unit

Net income per unit applicable to the limited partners is computed using the two-class method, since we have more than one participating security as of March 31, 2018, common units and restricted units. Prior to the equity restructuring transaction described in Note 1, which was effective October 31, 2017, we had participating securities which included the aforementioned common units and restricted units as well as general partner units and IDRs. After the equity restructuring, the general partner interest was no longer entitled to any distributions, and none were made on the general partner interest after October 31, 2017.

To the extent net income attributable to the partners exceeds or is less than cash distributions, this difference is allocated to the partners based on their weighted-average ownership percentage during the period, after consideration of any priority allocations of earnings. Our dilutive securities, restricted units, are immaterial for all periods presented.

For purposes of applying the two-class method, including the allocation of cash distributions in excess of earnings, net income per limited partner unit is computed as follows:

	Three Months Ended March 31,
	2018			2017
	(In thousands)
Net income attributable to the partners	$	46,168		$	25,563
Less: General partner’s distribution declared (including IDRs)	—			(17,775		)
Limited partner’s distribution declared on common units	(66,551		)	(39,632		)
Distributions in excess of net income attributable to the partners	$	(20,383	)	$	(31,844	)

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	General Partner (including IDRs)			Limited Partners’ Common Units			Total
	(In thousands, except per unit data)
Three Months Ended March 31, 2018
Net income attributable to the partners:
Distributions declared	$	—		$	66,551		$	66,551
Distributions in excess of net income attributable to the partners				(20,383		)	(20,383		)
Net income attributable to the partners	$	—		$	46,168		$	46,168
Weighted average limited partners' units outstanding				103,836
Limited partners' per unit interest in earnings - basic and diluted				$	0.44
Three Months Ended March 31, 2017
Net income attributable to the partners:
Distributions declared	$	17,775		$	39,632		$	57,407
Distributions in excess of net income attributable to the partners	(637		)	(31,207		)	(31,844		)
Net income attributable to the partners	$	17,138		$	8,425		$	25,563
Weighted average limited partners' units outstanding				63,113
Limited partners' per unit interest in earnings - basic and diluted				$	0.13

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Note 13: Environmental

We incurred no expenses for the three months ended March 31, 2018 and 2017 for environmental remediation obligations. The accrued environmental liability, net of expected recoveries from indemnifying parties, reflected in our consolidated balance sheets was $6.4 million and $6.5 million at March 31, 2018 and December 31, 2017, respectively, of which $4.9 million and $5.0 million, respectively, were classified as other long-term liabilities. These accruals include remediation and monitoring costs expected to be incurred over an extended period of time.

Under the Omnibus Agreement and certain transportation agreements and purchase agreements with HFC, HFC has agreed to indemnify us, subject to certain monetary and time limitations, for environmental noncompliance and remediation liabilities associated with certain assets transferred to us from HFC and occurring or existing prior to the date of such transfers. As of March 31, 2018 and December 31, 2017, our consolidated balance sheets included additional accrued environmental liabilities of $0.7 million and $0.8 million, respectively, for HFC indemnified liabilities, and other assets included equal and offsetting balances representing amounts due from HFC related to indemnifications for environmental remediation liabilities.

Note 14: Contingencies

We are a party to various legal and regulatory proceedings, none of which we believe will have a material adverse impact on our financial condition, results of operations or cash flows.

Note 15: Operating Segments

Although financial information is reviewed by our chief operating decision makers from a variety of perspectives, they view the business in two operating segments: pipelines and terminals, and refinery processing units. These operating segments adhere to the accounting polices used for our consolidated financial statements.

The pipelines and terminals segment has been aggregated as both pipeline and terminals (1) have similar economic characteristics,(2) similarly provide logistics services of transportation and storage of petroleum products, (3) similarly support the petroleum refining business, including distribution of its products, (4) have principally the same customers and (5) are subject to similar regulatory requirements.

We evaluate the performance of each segment based on its respective operating income. Certain general and administrative expenses and interest and financing costs are excluded from segment operating income as they are not directly attributable to a specific operating segment. Identifiable assets are those used by the segment, whereas other assets are principally equity method investments, cash, deposits and other assets that are not associated with a specific reportable operating segment.

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	Three Months Ended March 31,
	2018			2017
Revenues:
Pipelines and terminals - affiliate	$	82,894		$	69,645
Pipelines and terminals - third-party	27,456			16,609
Refinery processing units - affiliate	18,534			19,380
Total segment revenues	$	128,884		$	105,634
Segment operating income:
Pipelines and terminals	$	60,213		$	46,485
Refinery processing units	7,327			7,883
Total segment operating income	67,540			54,368
Unallocated general and administrative expenses	(3,122		)	(2,634		)
Interest and financing costs, net	(17,066		)	(25,662		)
Equity in earnings of unconsolidated affiliates	1,279			1,840
Gain on sale of assets and other	86			73
Income before income taxes	$	48,717		$	27,985
Capital Expenditures:
Pipelines and terminals	$	12,612		$	8,129
Refinery processing units	—			136
Total capital expenditures	$	12,612		$	8,265

	March 31, 2018		December 31, 2017
	(in thousands)
Identifiable assets:
Pipelines and terminals (1)	$	1,711,880	$	1,728,074
Refinery processing units	324,570		328,585
Other	98,339		97,455
Total identifiable assets	$	2,134,789	$	2,154,114

(1) Includes goodwill of $268.2 million and $266.7 million as of March 31, 2018 and December 31, 2017, respectively.

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Note 16: Supplemental Guarantor/Non-Guarantor Financial Information

Obligations of HEP (“Parent”) under the 6% Senior Notes have been jointly and severally guaranteed by each of its direct and indirect 100% owned subsidiaries (“Guarantor Subsidiaries”). These guarantees are full and unconditional, subject to certain customary release provisions. These circumstances include (i) when a Guarantor Subsidiary is sold or sells all or substantially all of its assets, (ii) when a Guarantor Subsidiary is declared “unrestricted” for covenant purposes, (iii) when a Guarantor Subsidiary’s guarantee of other indebtedness is terminated or released and (iv) when the requirements for legal defeasance or covenant defeasance or to discharge the senior notes have been satisfied.

The following financial information presents condensed consolidating balance sheets, statements of comprehensive income, and statements of cash flows of the Parent, the Guarantor Subsidiaries and the Non-Guarantor Subsidiaries. The information has been presented as if the Parent accounted for its ownership in the Guarantor Subsidiaries, and the Guarantor Restricted Subsidiaries accounted for the ownership of the Non-Guarantor Non-Restricted Subsidiaries, using the equity method of accounting.

Condensed Consolidating Balance Sheet

March 31, 2018	Parent		Guarantor Restricted Subsidiaries		Non-Guarantor Non-Restricted Subsidiaries		Eliminations			Consolidated
	(In thousands)
ASSETS
Current assets:
Cash and cash equivalents	$	2	$	1,485	$	7,078	$	—		$	8,565
Accounts receivable	—		51,428		4,935		(198		)	56,165
Prepaid and other current assets	226		2,427		355		—			3,008
Total current assets	228		55,340		12,368		(198		)	67,738
Properties and equipment, net	—		1,204,672		356,382		—			1,561,054
Investment in subsidiaries	1,879,597		272,530		—		(2,152,127		)	—
Intangible assets, net	—		125,427		—		—			125,427
Goodwill	—		268,166		—		—			268,166
Equity method investments	—		84,678		—		—			84,678
Other assets	11,096		16,630		—		—			27,726
Total assets	$	1,890,921	$	2,027,443	$	368,750	$	(2,152,325	)	$	2,134,789
LIABILITIES AND EQUITY
Current liabilities:
Accounts payable	$	—	$	20,691	$	3,461	$	(198	)	$	23,954
Accrued interest	6,079		—		—		—			6,079
Deferred revenue	—		8,497		—		—			8,497
Accrued property taxes	—		4,423		1,713		—			6,136
Other current liabilities	226		7,376		—		—			7,602
Total current liabilities	6,305		40,987		5,174		(198		)	52,268
Long-term debt	1,390,952		—		—		—			1,390,952
Other long-term liabilities	260		15,249		202		—			15,711
Deferred revenue	—		47,740		—		—			47,740
Class B unit	—		43,870		—		—			43,870
Equity - partners	493,404		1,879,597		272,530		(2,152,127		)	493,404
Equity - noncontrolling interest	—		—		90,844		—			90,844
Total liabilities and equity	$	1,890,921	$	2,027,443	$	368,750	$	(2,152,325	)	$	2,134,789

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Condensed Consolidating Balance Sheet

December 31, 2017	Parent		Guarantor Restricted Subsidiaries		Non-Guarantor Non-Restricted Subsidiaries		Eliminations			Consolidated
	(In thousands)
ASSETS
Current assets:
Cash and cash equivalents	$	2	$	511	$	7,263	$	—		$	7,776
Accounts receivable	—		59,448		5,038		(182		)	64,304
Prepaid and other current assets	13		2,016		282		—			2,311
Total current assets	15		61,975		12,583		(182		)	74,391
Properties and equipment, net	—		1,213,626		355,845		—			1,569,471
Investment in subsidiaries	1,902,285		273,319		—		(2,175,604		)	—
Intangible assets, net	—		129,463		—		—			129,463
Goodwill	—		266,716		—		—			266,716
Equity method investments	—		85,279		—		—			85,279
Other assets	11,753		17,041		—		—			28,794
Total assets	$	1,914,053	$	2,047,419	$	368,428	$	(2,175,786	)	$	2,154,114
LIABILITIES AND EQUITY
Current liabilities:
Accounts payable	$	—	$	20,928	$	1,526	$	(182	)	$	22,272
Accrued interest	12,500		756		—		—			13,256
Deferred revenue	—		8,540		1,058		—			9,598
Accrued property taxes	—		3,431		1,221		—			4,652
Other current liabilities	—		5,707		—		—			5,707
Total current liabilities	12,500		39,362		3,805		(182		)	55,485
Long-term debt	1,507,308		—		—		—			1,507,308
Other long-term liabilities	286		15,359		198		—			15,843
Deferred revenue	—		47,272		—		—			47,272
Class B unit	—		43,141		—		—			43,141
Equity - partners	393,959		1,902,285		273,319		(2,175,604		)	393,959
Equity - noncontrolling interest	—		—		91,106		—			91,106
Total liabilities and equity	$	1,914,053	$	2,047,419	$	368,428	$	(2,175,786	)	$	2,154,114

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Condensed Consolidating Statement of Comprehensive Income

Three Months Ended March 31, 2018	Parent			Guarantor Restricted Subsidiaries			Non-Guarantor Non-restricted Subsidiaries			Eliminations			Consolidated
	(In thousands)
Revenues:
Affiliates	$	—		$	94,291		$	7,137		$	—		$	101,428
Third parties	—			19,978			7,478			—			27,456
	—			114,269			14,615			—			128,884
Operating costs and expenses:
Operations (exclusive of depreciation and amortization)	—			32,664			3,538			—			36,202
Depreciation and amortization				21,001			4,141			—			25,142
General and administrative	1,280			1,842			—			—			3,122
	1,280			55,507			7,679			—			64,466
Operating income (loss)	(1,280		)	58,762			6,936			—			64,418
Other income (expense):
Equity in earnings of subsidiaries	65,052			5,212			—			(70,264		)	—
Equity in earnings of equity method investments	—			1,279			—			—			1,279
Interest expense	(17,649		)	68			—			—			(17,581		)
Interest income	—			515			—			—			515
Gain on sale of assets and other	45			28			13			—			86
	47,448			7,102			13			(70,264		)	(15,701		)
Income before income taxes	46,168			65,864			6,949			(70,264		)	48,717
State income tax expense	—			(82		)	—			—			(82		)
Net income	46,168			65,782			6,949			(70,264		)	48,635
Allocation of net income attributable to noncontrolling interests	—			(730		)	(1,737		)	—			(2,467		)
Net income attributable to the partners	46,168			65,052			5,212			(70,264		)	46,168
Other comprehensive income	—			—			—			—			—
Comprehensive income attributable to the partners	$	46,168		$	65,052		$	5,212		$	(70,264	)	$	46,168

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Condensed Consolidating Statement of Comprehensive Income

Three Months Ended March 31, 2017	Parent			Guarantor Restricted Subsidiaries			Non-Guarantor Non-Restricted Subsidiaries			Eliminations			Consolidated
	(In thousands)
Revenues:
Affiliates	$	—		$	80,776		$	8,249		$	—		$	89,025
Third parties	—			11,003			5,606			—			16,609
	—			91,779			13,855			—			105,634
Operating costs and expenses:
Operations (exclusive of depreciation and amortization)	—			29,092			3,397			—			32,489
Depreciation and amortization	—			14,853			3,924			—			18,777
General and administrative	1,155			1,479			—			—			2,634
	1,155			45,424			7,321			—			53,900
Operating income (loss)	(1,155		)	46,355			6,534			—			51,734
Other income (expense):
Equity in earnings of subsidiaries	45,283			4,901			—			(50,184		)	—
Equity in earnings of equity method investments	—			1,840			—			—			1,840
Interest expense	(6,340		)	(7,199		)	—			—			(13,539		)
Interest income	—			102			—			—			102
Loss on early extinguishment of debt	(12,225		)	—			—			—			(12,225		)
Gain on sale of assets and other	—			72			1			—			73
	26,718			(284		)	1			(50,184		)	(23,749		)
Income before income taxes	25,563			46,071			6,535			(50,184		)	27,985
State income tax expense	—			(106		)	—			—			(106		)
Net income	25,563			45,965			6,535			(50,184		)	27,879
Allocation of net income attributable to noncontrolling interests	—			(682		)	(1,634		)	—			(2,316		)
Net income attributable to the partners	25,563			45,283			4,901			(50,184		)	25,563
Other comprehensive income	63			63			—			(63		)	63
Comprehensive income attributable to the partners	$	25,626		$	45,346		$	4,901		$	(50,247	)	$	25,626

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Condensed Consolidating Statement of Cash Flows

Three Months Ended March 31, 2018	Parent			Guarantor Restricted Subsidiaries			Non-Guarantor Non-Restricted Subsidiaries			Eliminations			Consolidated
	(In thousands)
Cash flows from operating activities	$	(23,679	)	$	98,013		$	11,398		$	(5,212	)	$	80,520
Cash flows from investing activities
Additions to properties and equipment	—			(9,029		)	(3,583		)	—			(12,612		)
Distributions from UNEV in excess of earnings	—			788			—			(788		)	—
Proceeds from sale of assets	—			22			—			—			22
Distributions in excess of equity in earnings of equity investments	—			358			—			—			358
	—			(7,861		)	(3,583		)	(788		)	(12,232		)
Cash flows from financing activities
Net repayments under credit agreement	(116,500		)	—			—			—			(116,500		)
Net intercompany financing activities	89,060			(89,060		)	—			—			—
Proceeds from issuance of common units	114,376			153			—			—			114,529
Contribution from general partner	297			—			—			—			297
Distributions to HEP unitholders	(63,496		)	—			—			—			(63,496		)
Distributions to noncontrolling interests	—			—			(8,000		)	6,000			(2,000		)
Units withheld for tax withholding obligations	(58		)	—			—			—			(58		)
Deferred financing cost	—			6			—			—			6
Other	—			(277		)	—			—			(277		)
	23,679			(89,178		)	(8,000		)	6,000			(67,499		)
Cash and cash equivalents
Increase (decrease) for the period	—			974			(185		)	—			789
Beginning of period	2			511			7,263			—			7,776
End of period	$	2		$	1,485		$	7,078		$	—		$	8,565

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Condensed Consolidating Statement of Cash Flows

Three Months Ended March 31, 2017	Parent			Guarantor Restricted Subsidiaries			Non-Guarantor Non-Restricted Subsidiaries			Eliminations			Consolidated
	(In thousands)
Cash flows from operating activities	$	(20,262	)	$	58,062		$	10,736		$	(4,901	)	$	43,635
Cash flows from investing activities
Additions to properties and equipment	—			(7,902		)	(363		)	—			(8,265		)
Proceeds from sale of assets	—			424			—			—			424
Distributions from UNEV in excess of earnings	—			1,099			—			(1,099		)	—
Distributions in excess of equity in earnings of equity investments	—			3,016			—			—			3,016
	—			(3,363		)	(363		)	(1,099		)	(4,825		)
Cash flows from financing activities
Net borrowings under credit agreement	—			294,000			—			—			294,000
Net intercompany financing activities	344,781			(344,781		)	—			—			—
Redemption of senior notes	(309,750		)	—			—			—			(309,750		)
Proceeds from issuance of common units	39,371			(1,808		)	—			—			37,563
Distributions to HEP unitholders	(54,807		)	2			—			—			(54,805		)
Distributions to noncontrolling interests	—			—			(8,000		)	6,000			(2,000		)
Distribution to HFC for El Dorado tanks	(103		)	—			—			—			(103		)
Contributions from general partner	805			(805		)	—			—			—
Units withheld for tax withholding obligations	(35		)	—			—			—			(35		)
Other	—			(330		)	—			—			(330		)
	20,262			(53,722		)	(8,000		)	6,000			(35,460		)
Cash and cash equivalents
Decrease for the period	—			977			2,373			—			3,350
Beginning of period	2			301			3,354			—			3,657
End of period	$	2		$	1,278		$	5,727		$	—		$	7,007

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Item 2. Management’s Discussion and Analysis of Financial Condition and Results of Operations

This Item 2, including but not limited to the sections under “Results of Operations” and “Liquidity and Capital Resources,” contains forward-looking statements. See “Forward-Looking Statements” at the beginning of Part I of this Quarterly Report on Form 10-Q. In this document, the words “we,” “our,” “ours” and “us” refer to Holly Energy Partners, L. P. (“HEP”) and its consolidated subsidiaries or to HEP or an individual subsidiary and not to any other person.

OVERVIEW

HEP is a Delaware limited partnership. We own and operate petroleum product and crude oil pipelines, terminal, tankage and loading rack facilities and refinery processing units that support the refining and marketing operations of HollyFrontier Corporation (“HFC”) in the Mid-Continent, Southwest and Northwest regions of the United States and Delek US Holdings, Inc.’s (“Delek”) refinery in Big Spring, Texas. HEP, through its subsidiaries and joint ventures, owns and/or operates petroleum product and crude pipelines, tankage and terminals in Texas, New Mexico, Arizona, Washington, Idaho, Oklahoma, Utah, Nevada, Wyoming and Kansas as well as refinery processing units in Utah and Kansas. HFC owned a 57% of our outstanding common units and the non-economic general partnership interest, as of March 31, 2018.

On October 31, 2017, we closed on an equity restructuring transaction with HEP Logistics Holdings, L.P. (“HEP Logistics”), a wholly-owned subsidiary of HFC and the general partner of HEP, pursuant to which the incentive distribution rights (“IDRs”) held by HEP Logistics were canceled, and HEP Logistics' 2% general partner interest in HEP was converted into a non-economic general partner interest in HEP. In consideration, we issued 37,250,000 of our common units to HEP Logistics. In addition, HEP Logistics agreed to waive $2.5 million of limited partner cash distributions for each of twelve consecutive quarters beginning with the first quarter the units issued as consideration were eligible to receive distributions. As a result of this transaction, no distributions were made on the general partner interest after October 31, 2017.

We generate revenues by charging tariffs for transporting petroleum products and crude oil through our pipelines, by charging fees for terminalling and storing refined products and other hydrocarbons, providing other services at our storage tanks and terminals and charging a tolling fee per barrel or thousand standard cubic feet of feedstock throughput in our refinery processing units. We do not take ownership of products that we transport, terminal, store or process, and therefore, we are not directly exposed to changes in commodity prices.

We believe the long-term growth of global refined product demand and US crude production should support high utilization rates for the refineries we serve, which in turn will support volumes in our product pipelines, crude gathering systems and terminals.

Acquisitions

On October 31, 2017, we acquired the remaining 75% interest in SLC Pipeline LLC (“SLC Pipeline”) and the remaining 50% interest in Frontier Aspen LLC (“Frontier Aspen”) from subsidiaries of Plains All American Pipeline, L.P. (“Plains”), for cash consideration of $250 million. Prior to this acquisition, we held noncontrolling interests of 25% of SLC Pipeline and 50% of Frontier Aspen. As a result of the acquisitions, SLC Pipeline and Frontier Aspen are wholly-owned subsidiaries of HEP.

This acquisition was accounted for as a business combination achieved in stages with the consideration allocated to the acquisition date fair value of assets and liabilities acquired. The preexisting equity interests in SLC Pipeline and Frontier Aspen were remeasured at acquisition date fair value since we have a controlling interest as a result, and we recognized a gain on the remeasurement in the fourth quarter of 2017 of $36.3 million.

SLC Pipeline is the owner of a 95-mile crude pipeline that transports crude oil into the Salt Lake City area from the Utah terminal of the Frontier Pipeline and from Wahsatch Station. Frontier Aspen is the owner of a 289-mile crude pipeline from Casper, Wyoming to Frontier Station, Utah that supplies Canadian and Rocky Mountain crudes to Salt Lake City area refiners through a connection to the SLC Pipeline.

Agreements with HFC and Delek

We serve HFC’s refineries under long-term pipeline, terminal, tankage and refinery processing unit throughput agreements expiring from 2019 to 2036. Under these agreements, HFC agrees to transport, store and process throughput volumes of refined product, crude oil and feedstocks on our pipelines, terminal, tankage, loading rack facilities and refinery processing units that result in minimum annual payments to us. These minimum annual payments or revenues are subject to annual rate adjustments on July 1st

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Table of Contentsril 19,

each year, based on the Producer Price Index (“PPI”) or Federal Energy Regulatory Commission (“FERC”) index. As of March 31, 2018, these agreements with HFC require minimum annualized payments to us of $332.7 million.

If HFC fails to meet its minimum volume commitments under the agreements in any quarter, it will be required to pay us the amount of any shortfall in cash by the last day of the month following the end of the quarter. Under certain of the agreements, a shortfall payment may be applied as a credit in the following four quarters after minimum obligations are met.

We have a pipelines and terminals agreement with Delek expiring in 2020 under which Delek has agreed to transport on our pipelines and throughput through our terminals volumes of refined products that result in a minimum level of annual revenue that is also subject to annual tariff rate adjustments. We also have a capacity lease agreement under which we lease Delek space on our Orla to El Paso pipeline for the shipment of refined product. The terms under this lease agreement expire beginning in 2018

through 2022. As of March 31, 2018, these agreements with Delek require minimum annualized payments to us of $33 million.

A significant reduction in revenues under these agreements could have a material adverse effect on our results of operations.

Under certain provisions of an omnibus agreement we have with HFC (“Omnibus Agreement”), we pay HFC an annual administrative fee, currently $2.5 million, for the provision by HFC or its affiliates of various general and administrative services to us. This fee does not include the salaries of personnel employed by HFC who perform services for us on behalf of Holly Logistic Services, L.L.C. (“HLS”), or the cost of their employee benefits, which are separately charged to us by HFC. We also reimburse HFC and its affiliates for direct expenses they incur on our behalf.

Under HLS’s Secondment Agreement with HFC, certain employees of HFC are seconded to HLS to provide operational and maintenance services for certain of our processing, refining, pipeline and tankage assets, and HLS reimburses HFC for its prorated portion of the wages, benefits, and other costs of these employees for our benefit.

We have a long-term strategic relationship with HFC. Our current growth plan is to continue to pursue purchases of logistic and other assets at HFC’s existing refining locations in New Mexico, Utah, Oklahoma, Kansas and Wyoming. We also expect to work with HFC on logistic asset acquisitions in conjunction with HFC’s refinery acquisition strategies. Furthermore, we plan to continue to pursue third-party logistic asset acquisitions that are accretive to our unitholders and increase the diversity of our revenues.

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RESULTS OF OPERATIONS (Unaudited)

Income, Distributable Cash Flow and Volumes

The following tables present income, distributable cash flow and volume information for the three months ended March 31, 2018 and 2017.

	Three Months Ended March 31,						Change from
	2018			2017			2017
	(In thousands, except per unit data)
Revenues:
Pipelines:
Affiliates—refined product pipelines	$	21,294		$	17,744		$	3,550
Affiliates—intermediate pipelines	8,469			5,284			3,185
Affiliates—crude pipelines	19,797			16,881			2,916
	49,560			39,909			9,651
Third parties—refined product pipelines	13,582			12,538			1,044
Third parties—crude pipelines	9,027			—			9,027
	72,169			52,447			19,722
Terminals, tanks and loading racks:
Affiliates	33,334			29,736			3,598
Third parties	4,847			4,071			776
	38,181			33,807			4,374
Affiliates—refinery processing units	18,534			19,380			(846		)
Total revenues	128,884			105,634			23,250
Operating costs and expenses:
Operations (exclusive of depreciation and amortization)	36,202			32,489			3,713
Depreciation and amortization	25,142			18,777			6,365
General and administrative	3,122			2,634			488
	64,466			53,900			10,566
Operating income	64,418			51,734			12,684
Other income (expense):
Equity in earnings of equity method investments	1,279			1,840			(561		)
Interest expense, including amortization	(17,581		)	(13,539		)	(4,042		)
Interest income	515			102			413
Loss on early extinguishment of debt	—			(12,225		)	12,225
Gain on sale of assets and other	86			73			13
	(15,701		)	(23,749		)	8,048
Income before income taxes	48,717			27,985			20,732
State income tax expense	(82		)	(106		)	24
Net income	48,635			27,879			20,756
Allocation of net income attributable to noncontrolling interests	(2,467		)	(2,316		)	(151		)
Net income attributable to the partners	46,168			25,563			20,605
General partner interest in net income attributable to the partners (1)	—			(17,138		)	17,138
Limited partners’ interest in net income	$	46,168		$	8,425		$	37,743
Limited partners’ earnings per unit—basic and diluted(1)	$	0.44		$	0.13		$	0.31
Weighted average limited partners’ units outstanding	103,836			63,113			40,723
EBITDA(2)	$	88,458		$	57,883		$	30,575
Distributable cash flow(3)	$	69,099		$	57,289		$	11,810
Volumes (bpd)
Pipelines:
Affiliates—refined product pipelines	144,805			107,266			37,539
Affiliates—intermediate pipelines	126,993			104,340			22,653
Affiliates—crude pipelines	360,409			268,890			91,519
	632,207			480,496			151,711
Third parties—refined product pipelines	72,239			85,141			(12,902		)
Third parties – crude pipelines	126,014			—			126,014
	830,460			565,637			264,823
Terminals and loading racks:
Affiliates	390,481			374,923			15,558
Third parties	62,352			69,647			(7,295		)
	452,833			444,570			8,263
Affiliates—refinery processing units	66,875			62,829			4,046
Total for pipelines and terminal and refinery processing unit assets (bpd)	1,350,168			1,073,036			277,132

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(1) Prior to the equity restructuring transaction on October 31, 2017, net income attributable to Holly Energy Partners was allocated between limited partners and the general partner interest in accordance with the provisions of the partnership agreement. HEP net income allocated to the general partner included incentive distributions that were declared subsequent to quarter end. There were no distributions made on the general partner interest after October 31, 2017 and general partner distributions were $17.8 million for the three months ended March 31, 2017.

(2) Earnings before interest, taxes, depreciation and amortization (“EBITDA”) is calculated as net income attributable to the partners plus (i) interest expense, net of interest income, (ii) state income tax and (iii) depreciation and amortization. EBITDA is not a calculation based upon generally accepted accounting principles (“GAAP”). However, the amounts included in the EBITDA calculation are derived from amounts included in our consolidated financial statements. EBITDA should not be considered as an alternative to net income attributable to the partners or operating income, as an indication of our operating performance or as an alternative to operating cash flow as a measure of liquidity. EBITDA is not necessarily comparable to similarly titled measures of other companies. EBITDA is presented here because it is a widely used financial indicator used by investors and analysts to measure performance. EBITDA is also used by our management for internal analysis and as a basis for compliance with financial covenants. Set forth below is our calculation of EBITDA.

	Three Months Ended March 31,
	2018			2017
	(In thousands)
Net income attributable to the partners	$	46,168		$	25,563
Add (subtract):
Interest expense	16,824			12,769
Interest income	(515		)	(102		)
Amortization of discount and deferred debt issuance costs	757			770
State income tax expense	82			106
Depreciation and amortization	25,142			18,777
EBITDA	$	88,458		$	57,883

(3) Distributable cash flow is not a calculation based upon GAAP. However, the amounts included in the calculation are derived from amounts presented in our consolidated financial statements, with the general exceptions of maintenance capital expenditures. Distributable cash flow should not be considered in isolation or as an alternative to net income or operating income as an indication of our operating performance or as an alternative to operating cash flow as a measure of liquidity. Distributable cash flow is not necessarily comparable to similarly titled measures of other companies. Distributable cash flow is presented here because it is a widely accepted financial indicator used by investors to compare partnership performance. It is also used by management for internal analysis and for our performance units. We believe that this measure provides investors an enhanced perspective of the operating performance of our assets and the cash our business is generating. Set forth below is our calculation of distributable cash flow.

	Three Months Ended March 31,
	2018			2017
	(In thousands)
Net income attributable to the partners	$	46,168		$	25,563
Add (subtract):
Depreciation and amortization	25,142			18,777
Amortization of discount and deferred debt issuance costs	757			770
Loss on early extinguishment of debt	—			12,225
Customer billings greater / (less) than revenue recognized	(1,681		)	1,178
Maintenance capital expenditures (4)	(318		)	(825		)
Decrease in environmental liability	(140		)	(246		)
Decrease in reimbursable deferred revenue	(1,177		)	(925		)
Other non-cash adjustments	348			772
Distributable cash flow	$	69,099		$	57,289

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(4) Maintenance capital expenditures are capital expenditures made to replace partially or fully depreciated assets in order to maintain the existing operating capacity of our assets and to extend their useful lives. Maintenance capital expenditures include expenditures required to maintain equipment reliability, tankage and pipeline integrity, safety and to address environmental regulations.

	March 31, 2018		December 31, 2017
	(In thousands)
Balance Sheet Data
Cash and cash equivalents	$	8,565	$	7,776
Working capital	$	15,470	$	18,906
Total assets	$	2,134,789	$	2,154,114
Long-term debt	$	1,390,952	$	1,507,308
Partners’ equity (5)	$	493,404	$	393,959

(5) As a master limited partnership, we distribute our available cash, which historically has exceeded our net income attributable to the partners because depreciation and amortization expense represents a non-cash charge against income. The result is a decline in partners’ equity since our regular quarterly distributions have exceeded our quarterly net income attributable to the partners. Additionally, if the assets contributed and acquired from HFC while we were a consolidated VIE of HFC had been acquired from third parties, our acquisition cost in excess of HFC’s basis in the transferred assets would have been recorded in our financial statements as increases to our properties and equipment and intangible assets at the time of acquisition instead of decreases to partners’ equity.

Results of Operations—Three Months Ended March 31, 2018 Compared with Three Months Ended March 31, 2017

Summary

Net income attributable to the partners for the first quarter was $46.2 million ($0.44 per basic and diluted limited partner unit) compared to $25.6 million ($0.13 per basic and diluted limited partner unit) for the first quarter of 2017. The increase in earnings is primarily due to higher pipeline throughputs and revenues as well as increased earnings related to our acquisition of the remaining interest in the SLC and Frontier pipelines in the fourth quarter 2017, partially offset by higher interest expense. In addition, the first quarter of 2017 included a charge of $12.2 million related to the early redemption of our previously outstanding $300 million aggregate principal amount, 6.5% Senior Notes due in 2020 (the “6.5% Senior Notes”).

Our major shippers are obligated to make deficiency payments to us if they do not meet their minimum volume shipping obligations. Revenues for the three months ended March 31, 2018, include the recognition of $2.2 million of prior shortfalls billed to shippers in 2017 compared to revenues for the three months ended March 31, 2017, which included the recognition of $2.1 million of prior shortfalls billed to shippers in 2016. Additional net shortfall billings of $2.0 million associated with certain guaranteed shipping contracts were deferred during the three months ended March 31, 2018.

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Revenues

Revenues for the quarter were $128.9 million, an increase of $23.3 million compared to the first quarter of 2017 primarily due to revenues from the SLC and Frontier Aspen pipelines acquired in the fourth quarter of 2017 and the turnaround at HFC’s Navajo refinery during the first quarter of 2017. Overall pipeline volumes increased 47% compared to the three months ended March 31, 2017, largely due to the volumes from the SLC and Frontier Aspen pipelines acquired in the fourth quarter of 2017 as well as lower volumes in the first quarter of 2017 due to lower production at HFC’s Navajo refinery during the turnaround in the first quarter of 2017.

Revenues from our refined product pipelines were $34.9 million, an increase of $4.6 million compared to the first quarter of 2017, and shipments averaged 217.0 million barrels per day (“mbpd”) compared to 192.4 mbpd for the first quarter of 2017. Revenues and volumes both increased primarily due to the turnaround at HFC's Navajo refinery in the first quarter of 2017.

Revenues from our intermediate pipelines were $8.5 million, an increase of $3.2 million, on shipments averaging 127.0 mbpd compared to 104.3 mbpd for the first quarter of 2017. These increases were principally due to the turnaround at HFC's Navajo refinery in the first quarter of 2017.

Revenues from our crude pipelines were $28.8 million, an increase of $11.9 million, on shipments averaging 486.4 mbpd compared to 268.9 mbpd for the first quarter of 2017. The increases are mainly attributable to our acquisition of the remaining interest in the SLC and Frontier pipelines in the fourth quarter of 2017 as well as increased volumes on our crude pipeline systems in New Mexico and Texas.

Revenues from terminal, tankage and loading rack fees were $38.2 million, an increase of $4.4 million compared to the first quarter of 2017. Refined products and crude oil terminalled in the facilities averaged 452.8 mbpd compared to 444.6 mbpd for the first quarter of 2017. These increases are primarily due to higher volumes in several of our terminals as well as an adjustment in revenue recognition.

Revenues from refinery processing units were $18.5 million, a decrease of $0.8 million on throughputs averaging 66.9 mbpd compared to 62.8 mbpd for the first quarter of 2017. The decrease in revenue is principally due to lower throughputs at the Woods Cross refinery due to maintenance.

Operations Expense

Operations (exclusive of depreciation and amortization) expense for the three months ended March 31, 2018, increased by $3.7 million compared to the three months ended March 31, 2017. The increase is primarily due to new operating costs and expenses related to our acquisition of the remaining interest in the SLC and Frontier pipelines in the fourth quarter of 2017.

Depreciation and Amortization

Depreciation and amortization for the three months ended March 31, 2018, increased by $6.4 million compared to the three months ended March 31, 2017. The increase is primarily due to depreciation and amortization related to our acquisition of the remaining interest in the SLC and Frontier pipelines in the fourth quarter of 2017.

General and Administrative

General and administrative costs for the three months ended March 31, 2018, increased by $0.5 million compared to the three months ended March 31, 2017, mainly due to higher incentive compensation and professional fees.

Equity in Earnings of Equity Method Investments

	Three Months Ended March 31,
Equity Method Investment	2018		2017
	(in thousands)
SLC Pipeline LLC	$	—	$	118
Frontier Aspen LLC	—		564
Osage Pipe Line Company, LLC	642		202
Cheyenne Pipeline LLC	637		956
Total	$	1,279	$	1,840

Interest Expense

Interest expense for the three months ended March 31, 2018, totaled $17.6 million, an increase of $4.0 million compared to the three months ended March 31, 2017. The increase is primarily due to interest expense associated with the private placement of an additional $100 million in aggregate principal amount of our 6% Senior Notes due in 2024 completed in the third quarter of

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2017, higher average balances outstanding under our senior secured revolving credit facility during the first quarter of 2018, and market interest rate increases under that facility. Our aggregate effective interest rates were 4.9% and 4.3% for the three months ended March 31, 2018 and 2017, respectively.

State Income Tax

We recorded state income tax expense of $82,000 and $106,000 for the three months ended March 31, 2018 and 2017, respectively. All tax expense is solely attributable to the Texas margin tax.

LIQUIDITY AND CAPITAL RESOURCES

Overview

We have a $1.4 billion senior secured revolving credit facility (the “Credit Agreement”) expiring in July 2022. The Credit Agreement is available to fund capital expenditures, investments, acquisitions, distribution payments and working capital and for general partnership purposes. The Credit Agreement is also available to fund letters of credit up to a $50 million sub-limit, and it contains an accordion feature giving us the ability to increase the size of the facility by up to $300 million with additional lender commitments.

During the three months ended March 31, 2018, we received advances totaling $227.0 million and repaid $343.5 million, resulting in a net decrease of $116.5 million under the Credit Agreement and an outstanding balance of $895.5 million at March 31, 2018. As of March 31, 2018, we have no letters of credit outstanding under the Credit Agreement and the available capacity under the Credit Agreement was $504.5 million. Amounts repaid under our credit facility may be reborrowed from time to time.

If any particular lender under the Credit Agreement could not honor its commitment, we believe the unused capacity that would be available from the remaining lenders would be sufficient to meet our borrowing needs. Additionally, we review publicly available information on the lenders in order to monitor their financial stability and assess their ongoing ability to honor their commitments under the Credit Agreement. We do not expect to experience any difficulty in the lenders’ ability to honor their respective commitments, and if it were to become necessary, we believe there would be alternative lenders or options available.

On January 25, 2018, we entered into a common unit purchase agreement in which certain purchasers agreed to purchase in a private placement 3,700,000 common units representing limited partnership interests, at a price of $29.73 per common unit. The private placement closed on February 6, 2018, and we received proceeds of approximately $110 million, which were used to repay indebtedness under the Credit Agreement.

We have a continuous offering program under which we may issue and sell common units from time to time, representing limited partner interests, up to an aggregate gross sales amount of $200 million. For the three months ended March 31, 2018, HEP issued 152,169 units under this program, providing approximately $4.6 million in gross proceeds. We intend to use the net proceeds for general partnership purposes, which may include funding working capital, repayment of debt, acquisitions and capital expenditures. As of March 31, 2018, HEP has issued 2,394,076 units under this program, providing $81.7 million in gross proceeds.

Under our registration statement filed with the SEC using a “shelf” registration process, we currently have the authority to raise up to $2.0 billion, less amounts issued under the $200 million continuous offering program, by offering securities, through one or more prospectus supplements that would describe, among other things, the specific amounts, prices and terms of any securities offered and how the proceeds would be used. Any proceeds from the sale of securities would be used for general business purposes, which may include, among other things, funding acquisitions of assets or businesses, working capital, capital expenditures, investments in subsidiaries, the retirement of existing debt and/or the repurchase of common units or other securities.

We believe our current cash balances, future internally generated funds and funds available under the Credit Agreement will provide sufficient resources to meet our working capital liquidity needs for the foreseeable future.

In February 2018, we paid a regular cash distribution of $0.6500 on all units in an aggregate amount of $63.5 million after deducting HEP Logistics' waiver of $2.5 million of limited partner cash distributions.

Cash and cash equivalents increased by $0.8 million during the three months ended March 31, 2018. The cash flows provided by operating activities of $80.5 million were greater than the cash flows used for financing activities of $67.5 million and investing activities of $12.2 million. Working capital decreased by $3.4 million to $15.5 million at March 31, 2018, from $18.9 million at December 31, 2017.

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Cash Flows—Operating Activities

Cash flows from operating activities increased by $36.9 million from $43.6 million for the three months ended March 31, 2017, to $80.5 million for the three months ended March 31, 2018. The increase is due primarily to increased receipts from customers and lower payments for operating and interest expenses during the three months ended March 31, 2018, as compared to the three months ended March 31, 2017.

Cash Flows—Investing Activities

Cash flows used for investing activities were $12.2 million for the three months ended March 31, 2018, compared to $4.8 million for the three months ended March 31, 2017, an increase of $7.4 million. During the three months ended March 31, 2018 and 2017, we invested $12.6 million and $8.3 million in additions to properties and equipment, respectively. During the three months ended March 31, 2018 and 2017, we also received $0.4 million and $3.0 million, respectively, for distributions in excess of equity in earnings of equity investments, respectively.

Cash Flows—Financing Activities

Cash flows used for financing activities were $67.5 million for the three months ended March 31, 2018, compared to $35.5 million for the three months ended March 31, 2017, an increase of $32.0 million. During the three months ended March 31, 2018, we received $227.0 million and repaid $343.5 million in advances under the Credit Agreement. We also received net proceeds of $114.5 million from the issuance of common units. Additionally, we paid $63.5 million in regular quarterly cash distributions to our limited partners and $2.0 million to our noncontrolling interest. During the three months ended March 31, 2017, we received $380.0 million and repaid $86.0 million in advances under the Credit Agreement. We redeemed our 6.5% Senior Notes at a redemption cost of $309.8 million. We paid $54.8 million in regular quarterly cash distributions to our general and limited partners, and distributed $2.0 million to our noncontrolling interest. We also received net proceeds of $37.6 million from the issuance of common units under our continuous offering program.

Capital Requirements

Our pipeline and terminalling operations are capital intensive, requiring investments to maintain, expand, upgrade or enhance existing operations and to meet environmental and operational regulations. Our capital requirements have consisted of, and are expected to continue to consist of, maintenance capital expenditures and expansion capital expenditures. “Maintenance capital expenditures” represent capital expenditures to replace partially or fully depreciated assets to maintain the operating capacity of existing assets. Maintenance capital expenditures include expenditures required to maintain equipment reliability, tankage and pipeline integrity, safety and to address environmental regulations. “Expansion capital expenditures” represent capital expenditures to expand the operating capacity of existing or new assets, whether through construction or acquisition. Expansion capital expenditures include expenditures to acquire assets, to grow our business and to expand existing facilities, such as projects that increase throughput capacity on our pipelines and in our terminals. Repair and maintenance expenses associated with existing assets that are minor in nature and do not extend the useful life of existing assets are charged to operating expenses as incurred.

Each year the board of directors of HLS, our ultimate general partner, approves our annual capital budget, which specifies capital projects that our management is authorized to undertake. Additionally, at times when conditions warrant or as new opportunities arise, additional projects may be approved. The funds allocated for a particular capital project may be expended over a period in excess of a year, depending on the time required to complete the project. Therefore, our planned capital expenditures for a given year consist of expenditures approved for capital projects included in the current year’s capital budget as well as, in certain cases, expenditures approved for capital projects in capital budgets for prior years. We are forecasting to spend $8 million for maintenance capital expenditures and approximately $45 million to $55 million for expansion capital expenditures in 2018. We expect the majority of the expansion capital budget to be invested in refined product pipeline expansions, crude system enhancements, new storage tanks, and enhanced blending capabilities at our racks. In addition to our capital budget, we may spend funds periodically to perform capital upgrades or additions to our assets where a customer reimburses us for such costs. The upgrades or additions would generally benefit the customer over the remaining life of the related service agreements.

We expect that our currently planned sustaining and maintenance capital expenditures, as well as expenditures for acquisitions and capital development projects, will be funded with cash generated by operations, the sale of additional limited partner common units, the issuance of debt securities and advances under our Credit Agreement, or a combination thereof. With volatility and uncertainty at times in the credit and equity markets, there may be limits on our ability to issue new debt or equity financing. Additionally, due to pricing movements in the debt and equity markets, we may not be able to issue new debt and equity securities at acceptable pricing. Without additional capital beyond amounts available under the Credit Agreement, our ability to obtain funds for some of these capital projects may be limited.

Under the terms of the transaction to acquire HFC’s 75% interest in UNEV Pipeline, LLC (“UNEV”), we issued to HFC a Class B unit comprising a noncontrolling equity interest in a wholly-owned subsidiary subject to redemption to the extent that HFC is entitled to a 50% interest in our share of annual UNEV earnings before interest, income taxes, depreciation, and amortization

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above $30 million beginning July 1, 2015, and ending in June 2032, subject to certain limitations. However, to the extent earnings thresholds are not achieved, no redemption payments are required. No redemption payments have been required to date.

Credit Agreement

We have a $1.4 billion senior secured revolving credit facility (the “Credit Agreement”) expiring in July 2022. The Credit Agreement is available to fund capital expenditures, investments, acquisitions, distribution payments and working capital and for general partnership purposes. The Credit Agreement is also available to fund letters of credit up to a $50 million sub-limit, and it contains an accordion feature giving us the ability to increase the size of the facility by up to $300 million with additional lender commitments.

Our obligations under the Credit Agreement are collateralized by substantially all of our assets, and indebtedness under the Credit Agreement is guaranteed by our material, wholly-owned subsidiaries.  The Credit Agreement requires us to maintain compliance with certain financial covenants consisting of total leverage, senior secured leverage, and interest coverage.  It also limits or restricts our ability to engage in certain activities.  If, at any time prior to the expiration of the Credit Agreement, HEP obtains two investment grade credit ratings, the Credit Agreement will become unsecured and many of the covenants, limitations, and restrictions will be eliminated.

We may prepay all loans at any time without penalty, except for tranche breakage costs.  If an event of default exists under the Credit Agreement, the lenders will be able to accelerate the maturity of all loans outstanding and exercise other rights and remedies.  We were in compliance with all covenants as of March 31, 2018.

Senior Notes

On January 4, 2017, we redeemed the $300 million aggregate principal amount of our 6.5% Senior Notes due in 2020 at a redemption cost of $309.8 million, at which time we recognized a $12.2 million early extinguishment loss. We funded the redemption with borrowings under our Credit Agreement.

We have $500 million in aggregate principal amount of 6% Senior Notes due in 2024. We used the net proceeds from our offerings of the 6% Senior Notes to repay indebtedness under our Credit Agreement.

The 6% Senior Notes are unsecured and impose certain restrictive covenants, including limitations on our ability to incur additional indebtedness, make investments, sell assets, incur certain liens, pay distributions, enter into transactions with affiliates, and enter into mergers. We were in compliance with the restrictive covenants for the 6% Senior Notes as of March 31, 2018. At any time when the 6% Senior Notes are rated investment grade by both Moody’s and Standard & Poor’s and no default or event of default exists, we will not be subject to many of the foregoing covenants. Additionally, we have certain redemption rights at varying premiums over face value under the 6% Senior Notes.

Indebtedness under the 6% Senior Notes is guaranteed by our wholly-owned subsidiaries.

Long-term Debt

The carrying amounts of our long-term debt are as follows:

	March 31, 2018			December 31, 2017
	(In thousands)
Credit Agreement	$	895,500		$	1,012,000
6% Senior Notes
Principal	500,000			500,000
Unamortized debt issuance costs	(4,548		)	(4,692		)
	495,452			495,308
Total long-term debt	$	1,390,952		$	1,507,308

See “Risk Management” for a discussion of our interest rate swaps.

Contractual Obligations

There were no significant changes to our long-term contractual obligations during this period.

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Impact of Inflation

Inflation in the United States has been relatively moderate in recent years and did not have a material impact on our results of operations for the three months ended March 31, 2018 and 2017. PPI has increased an average of 0.4% annually over the past five calendar years, including an increase of 3.2% and a decrease of 1.0% in 2017 and 2016, respectively.

The substantial majority of our revenues are generated under long-term contracts that provide for increases or decreases in our rates and minimum revenue guarantees annually for increases or decreases in the PPI. Certain of these contracts have provisions that limit the level of annual PPI percentage rate increases or decreases. A significant and prolonged period of high inflation or a significant and prolonged period of negative inflation could adversely affect our cash flows and results of operations if costs increase at a rate greater than the fees we charge our shippers.

Environmental Matters

Our operation of pipelines, terminals, and associated facilities in connection with the transportation and storage of refined products and crude oil is subject to stringent and complex federal, state, and local laws and regulations governing the discharge of materials into the environment, or otherwise relating to the protection of the environment. As with the industry generally, compliance with existing and anticipated laws and regulations increases our overall cost of business, including our capital costs to construct, maintain, and upgrade equipment and facilities. While these laws and regulations affect our maintenance capital expenditures and net income, we believe that they do not affect our competitive position given that the operations of our competitors are similarly affected. However, these laws and regulations, and the interpretation or enforcement thereof, are subject to frequent change by regulatory authorities, and we are unable to predict the ongoing cost to us of complying with these laws and regulations or the future impact of these laws and regulations on our operations. Violation of environmental laws, regulations, and permits can result in the imposition of significant administrative, civil and criminal penalties, injunctions, and construction bans or delays. A major discharge of hydrocarbons or hazardous substances into the environment could, to the extent the event is not insured, subject us to substantial expense, including both the cost to comply with applicable laws and regulations and claims made by employees, neighboring landowners and other third parties for personal injury and property damage.

Under the Omnibus Agreement and certain transportation agreements and purchase agreements with HFC, HFC has agreed to indemnify us, subject to certain monetary and time limitations, for environmental noncompliance and remediation liabilities associated with certain assets transferred to us from HFC and occurring or existing prior to the date of such transfers.

We have an environmental agreement with Delek with respect to pre-closing environmental costs and liabilities relating to the pipelines and terminals acquired from Delek in 2005, under which Delek will indemnify us subject to certain monetary and time limitations.

There are environmental remediation projects in progress that relate to certain assets acquired from HFC. Certain of these projects were underway prior to our purchase and represent liabilities retained by HFC. At March 31, 2018, we had an accrual of $6.4 million that related to environmental clean-up projects for which we have assumed liability or for which the indemnity provided for by HFC has expired or will expire. The remaining projects, including assessment and monitoring activities, are covered under the HFC environmental indemnification discussed above and represent liabilities of HFC.

CRITICAL ACCOUNTING POLICIES

Our discussion and analysis of our financial condition and results of operations are based upon our consolidated financial statements, which have been prepared in accordance with accounting principles generally accepted in the United States. The preparation of these financial statements requires us to make estimates and judgments that affect the reported amounts of assets, liabilities, revenues and expenses, and related disclosure of contingent assets and liabilities as of the date of the financial statements. Actual results may differ from these estimates under different assumptions or conditions. Our significant accounting policies are described in “Item 7. Management’s Discussion and Analysis of Financial Condition and Operations—Critical Accounting Policies” in our Annual Report on Form 10-K for the year ended December 31, 2017. Certain critical accounting policies that materially affect the amounts recorded in our consolidated financial statements include revenue recognition, assessing the possible impairment of certain long-lived assets and goodwill, and assessing contingent liabilities for probable losses. There have been no changes to these policies in 2018. We consider these policies to be the most critical to understanding the judgments that are involved and the uncertainties that could impact our results of operations, financial condition and cash flows.

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Accounting Pronouncements Adopted During the Periods Presented

Share-Based Compensation

In March 2016, an accounting standard update was issued that simplifies the accounting for employee share-based payment transactions, including the accounting for income taxes, forfeitures and statutory tax withholding requirements, as well as classification in the statement of cash flows. We adopted this standard effective January 1, 2017, with no impact to our financial condition or results of operations. The new standard also requires that employee taxes paid when an employer withholds units for tax-withholding purposes be reported as financing activities in the statement of cash flows on a retrospective basis. Previously, this activity was included in operating activities. The impact of this change for the three months ended March 31, 2017 was not material to our consolidated statement of cash flows. Finally, consistent with our existing policy, we have elected to account for forfeitures on an estimated basis.

Revenue Recognition

In May 2014, an accounting standard update was issued requiring revenue to be recognized when promised goods or services are transferred to customers in an amount that reflects the expected consideration for these goods or services. This standard had an effective date of January 1, 2018, and we have accounted for the new guidance using the modified retrospective implementation method, whereby a cumulative effect adjustment is recorded to retained earnings as of the date of initial application. In preparing

for adoption, we evaluated the terms, conditions and performance obligations under our existing contracts with customers. Furthermore, we implemented policies to comply with this new standard. See Note 3, “Revenues”, for additional information on our revenue recognition policies.

Business Combinations

In December 2014, an accounting standard update was issued to provide new guidance on the definition of a business in relation to accounting for identifiable intangible assets in business combinations. This standard had an effective date of January 1, 2018, and had no effect on our financial condition, results of operations or cash flows.

Financial Assets and Liabilities

In January 2016, an accounting standard update was issued requiring changes in the accounting and disclosures for financial instruments. This standard was effective beginning with our 2018 reporting year and had no effect on our financial condition, results of operations or cash flows.

Accounting Pronouncements Not Yet Adopted

Leases

In February 2016, an accounting standard update was issued requiring leases to be measured and recognized as a lease liability, with a corresponding right-of-use asset on the balance sheet. This standard has an effective date of January 1, 2019, and we are evaluating the impact of this standard. In preparing for adoption, we have identified, reviewed and evaluated contracts containing lease and embedded lease arrangements. Additionally, we have acquired software and are implementing systems to facilitate lease capture and related accounting treatment.

RISK MANAGEMENT

The two interest rate swaps that hedged our exposure to the cash flow risk caused by the effects of LIBOR changes on $150 million of Credit Agreement advances matured on July 31, 2017. The swaps had effectively converted $150 million of our LIBOR based debt to fixed rate debt.

The market risk inherent in our debt positions is the potential change arising from increases or decreases in interest rates as discussed below.

At March 31, 2018, we had an outstanding principal balance of $500 million on our 6% Senior Notes. A change in interest rates generally would affect the fair value of the 6% Senior Notes, but not our earnings or cash flows. At March 31, 2018, the fair value of our 6% Senior Notes was $511.7 million. We estimate a hypothetical 10% change in the yield-to-maturity applicable to the 6% Senior Notes at March 31, 2018, would result in a change of approximately $15 million in the fair value of the underlying 6% Senior Notes.

For the variable rate Credit Agreement, changes in interest rates would affect cash flows, but not the fair value. At March 31, 2018, borrowings outstanding under the Credit Agreement were $895.5 million. A hypothetical 10% change in interest rates applicable to the Credit Agreement would not materially affect our cash flows.

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Our operations are subject to normal hazards of operations, including fire, explosion and weather-related perils. We maintain various insurance coverages, including business interruption insurance, subject to certain deductibles. We are not fully insured against certain risks because such risks are not fully insurable, coverage is unavailable, or premium costs, in our judgment, do not justify such expenditures.

We have a risk management oversight committee that is made up of members from our senior management.  This committee monitors our risk environment and provides direction for activities to mitigate, to an acceptable level, identified risks that may adversely affect the achievement of our goals.

Item 3. Quantitative and Qualitative Disclosures About Market Risk

Market risk is the risk of loss arising from adverse changes in market rates and prices. See “Risk Management” under “Management’s Discussion and Analysis of Financial Condition and Results of Operations” for a discussion of market risk exposures that we have with respect to our long-term debt, which disclosure should be read in conjunction with the quantitative and qualitative disclosures about market risk contained in our Annual Report on Form 10-K for the fiscal year ended December 31, 2017.

Since we do not own products shipped on our pipelines or terminalled at our terminal facilities, we do not have direct market risks associated with commodity prices.

Item 4. Controls and Procedures

(a) Evaluation of disclosure controls and procedures

Our principal executive officer and principal financial officer have evaluated, as required by Rule 13a-15(b) under the Securities Exchange Act of 1934 (the “Exchange Act”), our disclosure controls and procedures (as defined in Rules 13a-15(e) and 15d-15(e) under the Exchange Act) as of the end of the period covered by this quarterly report on Form 10-Q. Our disclosure controls and procedures are designed to provide reasonable assurance that the information we are required to disclose in the reports that we file or submit under the Exchange Act is accumulated and communicated to our management, including our principal executive officer and principal financial officer, as appropriate, to allow timely decisions regarding required disclosure and is recorded, processed, summarized and reported within the time periods specified in the Securities and Exchange Commission’s rules and forms. Based upon the evaluation, our principal executive officer and principal financial officer have concluded that our disclosure controls and procedures were effective as of March 31, 2018, at a reasonable level of assurance.

(b) Changes in internal control over financial reporting

There have been no changes in our internal control over financial reporting (as defined in Rule 13a-15(f) under the Exchange Act) that occurred during our last fiscal quarter that have materially affected or are reasonably likely to materially affect our internal control over financial reporting.

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PART II. OTHER INFORMATION

Item 1. Legal Proceedings

We are a party to various legal and regulatory proceedings, which we believe will not have a material adverse impact on our financial condition, results of operations or cash flows.

Item 1A. Risk Factors

There have been no material changes in our risk factors as previously disclosed in Part 1, “Item 1A. Risk Factors” of our Annual Report on Form 10-K for the fiscal year ended December 31, 2017. In addition to the other information set forth in this quarterly report, you should consider carefully the factors discussed in our 2017 Form 10-K, which could materially affect our business, financial condition or future results. The risks described in our 2017 Form 10-K are not the only risks we face. Additional risks and uncertainties not currently known to us or that we currently deem to be immaterial may also materially and adversely affect our business, financial condition or future results.

Item 6. Exhibits

The Exhibit Index on page 42 of this Quarterly Report on Form 10-Q lists the exhibits that are filed or furnished, as applicable, as part of this Quarterly Report on Form 10-Q.

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Exhibit Index

Exhibit Number	Description
3.1	Amended and Restated Agreement of Limited Partnership of Holly Energy Partners, L.P. (incorporated by reference to Exhibit 3.1 to Registrant’s Current Report on Form 8-K filed on November 1, 2017, File No. 1-32225).
3.2	First Amended and Restated Agreement of Limited Partnership of Holly Energy Partners - Operating Company, L.P. (incorporated by reference to Exhibit 3.2 of Registrant’s Quarterly Report on Form 10-Q for the quarterly period ended June 30, 2004, File No. 1-32225).
3.3	First Amended and Restated Agreement of Limited Partnership of HEP Logistics Holdings, L.P. (incorporated by reference to Exhibit 3.4 of Registrant’s Quarterly Report on Form 10-Q for its quarterly period ended June 30, 2004, File No. 1-32225).
3.4	First Amended and Restated Limited Liability Company Agreement of Holly Logistic Services, L.L.C. (incorporated by reference to Exhibit 3.5 of Registrant’s Quarterly Report on Form 10-Q for its quarterly period ended June 30, 2004, File No. 1-32225).
3.5	Amendment No. 1 to the First Amended and Restated Limited Liability Company Agreement of Holly Logistic Services, L.L.C., dated April 27, 2011 (incorporated by reference to Exhibit 3.1 of Registrant’s Form 8-K Current Report filed on May 3, 2011, File No. 1-32225).
3.6	First Amended and Restated Limited Liability Company Agreement of HEP Logistics GP, L.L.C. (incorporated by reference to Exhibit 3.6 of Registrant’s Quarterly Report on Form 10-Q for its quarterly period ended June 30, 2004, File No. 1-32225).
4.1	Registration Rights Agreement, dated February 6, 2018, by and among Holly Energy Partners L.P. and the various Purchasers party thereto (incorporated by reference to Exhibit 4.1 to the Registrant’s Current Report on Form 8-K filed on February 7, 2018, File No. 1-32225).
10.1	Eighteenth Amended and Restated Omnibus Agreement, dated as of January 19, 2018, effective December 8, 2017, by and among HollyFrontier Corporation, Holly Energy Partners, L.P. and certain of their respective subsidiaries (incorporated by reference to Exhibit 10.21 to the Registrant’s Annual Report on Form 10-K for the fiscal year ended December 31, 2017, File No. 1-32225).
10.2	Common Unit Purchase Agreement, dated as of January 25, 2018, by and among Holly Energy Partners, L.P. and the various Purchasers named therein (incorporated by reference to Exhibit 10.1 to the Registrant’s Current Report on Form 8-K filed on January 26, 2018, File No. 1-32225).
31.1*	Certification of Chief Executive Officer under Section 302 of the Sarbanes-Oxley Act of 2002.
31.2*	Certification of Chief Financial Officer under Section 302 of the Sarbanes-Oxley Act of 2002.
32.1**	Certification of Chief Executive Officer under Section 906 of the Sarbanes-Oxley Act of 2002.
32.2**	Certification of Chief Financial Officer under Section 906 of the Sarbanes-Oxley Act of 2002.

101++ The following financial information from Holly Energy Partners, L.P.’s Quarterly Report on Form 10-Q for the quarter ended March 31, 2018, formatted in XBRL (Extensible Business Reporting Language): (i) Consolidated Balance Sheets, (ii) Consolidated Statements of Income, (iii) Consolidated Statements of Comprehensive Income, (iv) Consolidated Statements of Cash Flows, (v) Consolidated Statement of Partners’ Equity, and (vi) Notes to Consolidated Financial Statements.

*	Filed herewith.
**	Furnished herewith.
++	Filed electronically herewith.

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HOLLY ENERGY PARTNERS, L.P.

SIGNATURES

Pursuant to the requirements of the Securities and Exchange Act of 1934, the Registrant has duly caused this report to be signed on its behalf by the undersigned thereunto duly authorized.

	HOLLY ENERGY PARTNERS, L.P.
	(Registrant)
		By: HEP LOGISTICS HOLDINGS, L.P. its General Partner
		By: HOLLY LOGISTIC SERVICES, L.L.C. its General Partner
Date: May 2, 2018		/s/    Richard L. Voliva III
		Richard L. Voliva III
		Executive Vice President and Chief Financial Officer (Principal Financial Officer)
Date: May 2, 2018		/s/    Kenneth P. Norwood
		Kenneth P. Norwood
		Vice President and Controller (Principal Accounting Officer)

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EX-31.1

Exhibit 31.1

CERTIFICATION

I, George J. Damiris, certify that:

1. I have reviewed this quarterly report on Form 10-Q of Holly Energy Partners, L.P;

2. Based on my knowledge, this report does not contain any untrue statement of a material fact or omit to state a material fact necessary to make the statements made, in light of the circumstances under which such statements were made, not misleading with respect to the period covered by this report;

3. Based on my knowledge, the financial statements, and other financial information included in this report, fairly present in all material respects the financial condition, results of operations and cash flows of the registrant as of, and for, the periods presented in this report;

4. The registrant’s other certifying officers and I are responsible for establishing and maintaining disclosure controls and procedures (as defined in Exchange Act Rules 13a-15(e) and 15d-15(e)) and internal control over financial reporting (as defined in Exchange Act Rules 13a-15(f) and 15d-15(f)) for the registrant and have:

a. designed such disclosure controls and procedures, or caused such disclosure controls and procedures to be designed under our supervision, to ensure that material information relating to the registrant, including its consolidated subsidiaries, is made known to us by others within those entities, particularly during the period in which this report is being prepared;

b. designed such internal control over financial reporting, or caused such internal control over financial reporting to be designed under our supervision, to provide reasonable assurance regarding the reliability of financial reporting and the preparation of financial statements for external purposes in accordance with generally accepted accounting principles;

c. evaluated the effectiveness of the registrant’s disclosure controls and procedures and presented in this report our conclusions about the effectiveness of the disclosure controls and procedures, as of the end of the period covered by this report based on such evaluation; and

d. disclosed in this report any change in the registrant’s internal control over financial reporting that occurred during the registrant's most recent fiscal quarter (the registrant's fourth fiscal quarter in the case of an annual report) that has materially affected, or is reasonably likely to materially affect, the registrant’s internal control over financial reporting; and

5. The registrant’s other certifying officers and I have disclosed, based on our most recent evaluation of internal control over financial reporting, to the registrant’s auditors and the audit committee of registrant’s board of directors (or persons performing the equivalent function):

a. all significant deficiencies and material weaknesses in the design or operation of internal control over financial reporting which are reasonably likely to adversely affect the registrant’s ability to record, process, summarize and report financial information; and

b. any fraud, whether or not material, that involves management or other employees who have a significant role in the registrant’s internal control over financial reporting.

Date: May 2, 2018	/s/ George J. Damiris
	George J. Damiris
	Chief Executive Officer

EX-31.2

Exhibit 31.2

CERTIFICATION

I, Richard L. Voliva III, certify that:

1. I have reviewed this quarterly report on Form 10-Q of Holly Energy Partners, L.P;

2. Based on my knowledge, this report does not contain any untrue statement of a material fact or omit to state a material fact necessary to make the statements made, in light of the circumstances under which such statements were made, not misleading with respect to the period covered by this report;

3. Based on my knowledge, the financial statements, and other financial information included in this report, fairly present in all material respects the financial condition, results of operations and cash flows of the registrant as of, and for, the periods presented in this report;

4. The registrant’s other certifying officers and I are responsible for establishing and maintaining disclosure controls and procedures (as defined in Exchange Act Rules 13a-15(e) and 15d-15(e)) and internal control over financial reporting (as defined in Exchange Act Rules 13a-15(f) and 15d-15(f)) for the registrant and have:

a. designed such disclosure controls and procedures, or caused such disclosure controls and procedures to be designed under our supervision, to ensure that material information relating to the registrant, including its consolidated subsidiaries, is made known to us by others within those entities, particularly during the period in which this report is being prepared;

b. designed such internal control over financial reporting, or caused such internal control over financial reporting to be designed under our supervision, to provide reasonable assurance regarding the reliability of financial reporting and the preparation of financial statements for external purposes in accordance with generally accepted accounting principles;

c. evaluated the effectiveness of the registrant’s disclosure controls and procedures and presented in this report our conclusions about the effectiveness of the disclosure controls and procedures, as of the end of the period covered by this report based on such evaluation; and

d. disclosed in this report any change in the registrant’s internal control over financial reporting that occurred during the registrant's most recent fiscal quarter (the registrant's fourth fiscal quarter in the case of an annual report) that has materially affected, or is reasonably likely to materially affect, the registrant’s internal control over financial reporting; and

5. The registrant’s other certifying officers and I have disclosed, based on our most recent evaluation of internal control over financial reporting, to the registrant’s auditors and the audit committee of registrant’s board of directors (or persons performing the equivalent function):

a. all significant deficiencies and material weaknesses in the design or operation of internal control over financial reporting which are reasonably likely to adversely affect the registrant’s ability to record, process, summarize and report financial information; and

b. any fraud, whether or not material, that involves management or other employees who have a significant role in the registrant’s internal control over financial reporting.

Date: May 2, 2018	/s/ Richard L. Voliva III
	Richard L. Voliva III
	Executive Vice President and Chief Financial Officer

EX-32.1

Exhibit 32.1

CERTIFICATION OF CHIEF EXECUTIVE

OFFICER OF HOLLY ENERGY PARTNERS, L.P.

PURSUANT TO 18 U.S.C. SECTION 1350

In connection with the accompanying report on Form 10-Q for the quarterly period ended March 31, 2018 and filed with the Securities and Exchange Commission on the date hereof (the “Report”), I, George J. Damiris, Chief Executive Officer of Holly Logistic Services, L.L.C., the general partner of HEP Logistics Holdings, L.P., the general partner of Holly Energy Partners, L.P (the “Company”), hereby certify, pursuant to Section 906 of the Sarbanes-Oxley Act of 2002, that:

1. The Report fully complies with the requirements of Section 13(a) or 15(d) of the Securities Exchange Act of 1934; and

2. The information contained in the Report fairly presents, in all material respects, the financial condition and results of operations of the Company.

Date: May 2, 2018	/s/ George J. Damiris
	George J. Damiris
	Chief Executive Officer

EX-32.2

Exhibit 32.2

CERTIFICATION OF CHIEF FINANCIAL

OFFICER OF HOLLY ENERGY PARTNERS, L.P.

PURSUANT TO 18 U.S.C. SECTION 1350

In connection with the accompanying report on Form 10-Q for the quarterly period ended March 31, 2018 and filed with the Securities and Exchange Commission on the date hereof (the “Report”), I, Richard L. Voliva III, Chief Financial Officer of Holly Logistic Services, L.L.C., the general partner of HEP Logistics Holdings, L.P., the general partner of Holly Energy Partners, L.P (the “Company”), hereby certify, pursuant to Section 906 of the Sarbanes-Oxley Act of 2002, that:

1. The Report fully complies with the requirements of Section 13(a) or 15(d), as applicable, of the Securities Exchange Act of 1934; and

2. The information contained in the Report fairly presents, in all material respects, the financial condition and results of operations of the Company.

Date: May 2, 2018	/s/ Richard L. Voliva III
	Richard L. Voliva III
	Executive Vice President and Chief Financial Officer

XML

Document Entity Information - USD ($)	3 Months Ended
	Mar. 31, 2018	Apr. 27, 2018	Jun. 30, 2017
Entity Information [Line Items]
Entity Registrant Name	HOLLY ENERGY PARTNERS LP
Entity Central Index Key	0001283140
Current Fiscal Year End Date	--12-31
Entity Filer Category	Large Accelerated Filer
Document Type	10-Q
Document Period End Date	Mar. 31, 2018
Document Fiscal Year Focus	2018
Document Fiscal Period Focus	Q1
Amendment Flag	false
Entity Common Stock, Shares Outstanding		105,421,124
Entity Public Float			$ 1,200,000,000

XML

Consolidated Balance Sheets - USD ($) $ in Thousands	Mar. 31, 2018	Dec. 31, 2017
Current assets:
Cash and cash equivalents	$ 8,565	$ 7,776
Accounts receivable:
Trade	14,534	12,803
Affiliates	41,631	51,501
Total accounts receivable	56,165	64,304
Prepaid and other current assets	3,008	2,311
Total current assets	67,738	74,391
Properties and equipment, net	1,561,054	1,569,471
Intangible assets, net	125,427	129,463
Goodwill	268,166	266,716
Equity method investments	84,678	85,279
Other assets	27,726	28,794
Total assets	2,134,789	2,154,114
Accounts payable:
Trade	13,213	14,547
Affiliates	10,741	7,725
Total accounts payable	23,954	22,272
Accrued interest	6,079	13,256
Deferred revenue	8,497	9,598
Accrued property taxes	6,136	4,652
Other current liabilities	7,602	5,707
Total current liabilities	52,268	55,485
Long-term debt	1,390,952	1,507,308
Other long-term liabilities	15,711	15,843
Deferred revenue	47,740	47,272
Class B unit	43,870	43,141
Partners’ equity:
Common unitholders (105,421,124 and 101,568,955 units issued and outstanding at March 31, 2018 and December 31, 2017, respectively	493,404	393,959
Total partners’ equity	493,404	393,959
Noncontrolling interest	90,844	91,106
Total Equity	584,248	485,065
Total liabilities and equity	$ 2,134,789	$ 2,154,114

XML

Consolidated Balance Sheets (Parenthetical) - shares	Mar. 31, 2018	Dec. 31, 2017
Partners' Equity:
Common units issued	105,421,124	101,568,955
Common units outstanding	105,421,124	101,568,955

XML

Consolidated Statements of Income - USD ($) shares in Thousands, $ in Thousands	3 Months Ended
	Mar. 31, 2018	Mar. 31, 2017
Revenues:
Affiliates	$ 101,428	$ 89,025
Third parties	27,456	16,609
Total revenues	128,884	105,634
Operating costs and expenses:
Operations (exclusive of depreciation and amortization)	36,202	32,489
Depreciation and amortization	25,142	18,777
General and administrative	3,122	2,634
Total operating costs and expenses	64,466	53,900
Operating income	64,418	51,734
Other income (expense):
Equity in earnings of equity method investments	1,279	1,840
Interest expense	(17,581)	(13,539)
Interest income	515	102
Loss on early extinguishment of debt	0	(12,225)
Gain on sale of assets and other	86	73
Total other income (expense)	(15,701)	(23,749)
Income before income taxes	48,717	27,985
State income tax benefit (expense)	(82)	(106)
Net Income	48,635	27,879
Allocation of net income attributable to noncontrolling interests	(2,467)	(2,316)
Net income attributable to the partners	46,168	25,563
General partner interest in net income attributable to the Partnership, including incentive distributions	0	(17,138)
Limited partners’ interest in net income	$ 46,168	$ 8,425
Limited partners’ per unit interest in earnings—basic and diluted:	$ 0.44	$ 0.13
Weighted average limited partners’ units outstanding	103,836	63,113

XML

Consolidated Statement of Comprehensive Income - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2018	Mar. 31, 2017
Net income	$ 48,635	$ 27,879
Other comprehensive income:
Change in fair value of cash flow hedging instruments	0	76
Reclassification adjustment to net income on partial settlement of cash flow hedge	0	(13)
Other comprehensive income	0	63
Comprehensive income before noncontrolling interest	48,635	27,942
Allocation of net comprehensive income to noncontrolling interests	(2,467)	(2,316)
Comprehensive income attributable to the partners	$ 46,168	$ 25,626

XML

Consolidated Statements of Cash Flows - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2018	Mar. 31, 2017
Payments to Acquire Machinery and Equipment		$ 103
Cash flows from operating activities
Net income	$ 48,635	27,879
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization	25,142	18,777
(Gain) loss on sale of assets	(22)	(58)
Amortization of deferred charges	757	770
Equity-based compensation expense	837	433
Equity in earnings of equity method investments, net of distributions	243	273
Loss on early extinguishment of debt	0	12,225
(Increase) decrease in operating assets:
Accounts receivable – trade	(1,731)	375
Accounts receivable – affiliates	9,870	7,733
Prepaid and other current assets	(697)	(282)
Increase (decrease) in operating liabilities:
Accounts payable – trade	(814)	(1,122)
Accounts payable – affiliates	(3,016)	9,943
Accrued interest	(7,177)	(13,551)
Deferred revenue	687	551
Accrued property taxes	1,484	9
Other current liabilities	375	(328)
Other, net	(85)	(106)
Net cash provided by operating activities	80,520	43,635
Cash flows from investing activities
Additions to properties and equipment	(12,612)	(8,265)
Proceeds from sale of assets	22	424
Distributions in excess of equity in earnings of equity investments	358	3,016
Net cash used for investing activities	(12,232)	(4,825)
Cash flows from financing activities
Borrowings under credit agreement	227,000	380,000
Repayments of credit agreement borrowings	(343,500)	(86,000)
Redemption of 6.5% Senior Notes	0	(309,750)
Proceeds from Issuance of common units	114,529	37,563
Distributions to HEP unitholders	(63,496)	(54,805)
Distributions to noncontrolling interests	(2,000)	(2,000)
Distribution to HFC for El Dorado tanks	0	(103)
Contributions from general partner	297	0
Units withheld for tax withholding obligations	(58)	(35)
Deferred financing costs	(6)	0
Other	(277)	(330)
Net cash used by financing activities	(67,499)	(35,460)
Cash and cash equivalents
Increase (decrease) for the period	789	3,350
Beginning of period	7,776	3,657
End of period	$ 8,565	$ 7,007

XML

Consolidated Statement of Equity - 3 months ended Mar. 31, 2018 - USD ($) $ in Thousands	Total	Common Units	Noncontrolling Interest
Balance at at Dec. 31, 2017	$ 485,065	$ 393,959	$ 91,106
Increase (Decrease) in Partners' Equity [Roll Forward]
Issuance of common units	114,376	114,376
Distributions to HEP unitholders	(63,496)	(63,496)
Distributions to Noncontrolling Interest	(2,000)		(2,000)
Amortization of restricted and performance units	837	837
Class B unit accretion	(729)	(729)
Cumulative transition adjustment for adoption of revenue recognition standard	1,320	1,320
Other	240	240
Net income	48,635	46,897	1,738
Balance at at Mar. 31, 2018	$ 584,248	$ 493,404	$ 90,844

XML

Description of Business and Presentation of Financial Statements

3 Months Ended

Mar. 31, 2018

Accounting Policies [Abstract]

Description of Business and Presentation of Financial Statements

Description of Business and Presentation of Financial Statements

Holly Energy Partners, L.P. (“HEP”), together with its consolidated subsidiaries, is a publicly held master limited partnership. As of March 31, 2018, HollyFrontier Corporation (“HFC”) and its subsidiaries own a 57% limited partner interest and the non-economic general partner interest in HEP. We commenced operations on July 13, 2004, upon the completion of our initial public offering. In these consolidated financial statements, the words “we,” “our,” “ours” and “us” refer to HEP unless the context otherwise indicates.

On October 31, 2017, we closed on an equity restructuring transaction with HEP Logistics Holdings, L.P. (“HEP Logistics”), a wholly-owned subsidiary of HFC and the general partner of HEP, pursuant to which the incentive distribution rights (“IDRs”) held by HEP Logistics were canceled, and HEP Logistics' 2% general partner interest in HEP was converted into a non-economic general partner interest in HEP. In consideration, we issued 37,250,000 of our common units to HEP Logistics. In addition, HEP Logistics agreed to waive $2.5 million of limited partner cash distributions for each of twelve consecutive quarters beginning with the first quarter the units issued as consideration were eligible to receive distributions. As a result of this transaction, no distributions were made on the general partner interest after October 31, 2017.

On January 25, 2018, we entered into a common unit purchase agreement in which certain purchasers agreed to purchase in a private placement 3,700,000 common units representing limited partner interests, at a price of $29.73 per common unit. The private placement closed on February 6, 2018, and we received proceeds of approximately $110 million, which were used to repay indebtedness under our revolving credit facility.

We own and operate petroleum product and crude oil pipelines, terminal, tankage and loading rack facilities and refinery processing units that support HFC’s refining and marketing operations in the Mid-Continent, Southwest and Northwest regions of the United States and Delek US Holdings, Inc.’s (“Delek”) refinery in Big Spring, Texas. Additionally, we own a 75% interest in UNEV Pipeline, LLC (“UNEV”), a 50% interest in the Osage Pipe Line Company, LLC (“Osage”) and a 50% interest in the Cheyenne Pipeline LLC.

We operate in two reportable segments, a Pipelines and Terminals segment and a Refinery Processing Unit segment. Disclosures around these segments are discussed in Note 15.

We generate revenues by charging tariffs for transporting petroleum products and crude oil through our pipelines, by charging fees for terminalling and storing refined products and other hydrocarbons, providing other services at our storage tanks and terminals and by charging fees for processing hydrocarbon feedstocks through our refinery processing units. We do not take ownership of products that we transport, terminal, store or process, and therefore, we are not exposed directly to changes in commodity prices.

The consolidated financial statements included herein have been prepared without audit, pursuant to the rules and regulations of the United States Securities and Exchange Commission (the “SEC”). The interim financial statements reflect all adjustments, which, in the opinion of management, are necessary for a fair presentation of our results for the interim periods. Such adjustments are considered to be of a normal recurring nature. Although certain notes and other information required by U.S. generally accepted accounting principles (“GAAP”) have been condensed or omitted, we believe that the disclosures in these consolidated financial statements are adequate to make the information presented not misleading. These consolidated financial statements should be read in conjunction with our Annual Report on Form 10-K for the year ended December 31, 2017. Results of operations for interim periods are not necessarily indicative of the results of operations that will be realized for the year ending December 31, 2018.

Principles of Consolidation and Common Control Transactions

The consolidated financial statements include our accounts and those of subsidiaries and joint ventures that we control. All significant intercompany transactions and balances have been eliminated.

Most of our acquisitions from HFC occurred while we were a consolidated variable interest entity (“VIE”) of HFC. Therefore, as an entity under common control with HFC, we recorded these acquisitions on our balance sheets at HFC's historical basis instead of our purchase price or fair value.

Accounting Pronouncements Adopted During the Periods Presented

Share-Based Compensation

In March 2016, an accounting standard update was issued which simplifies the accounting for employee share-based payment transactions, including the accounting for income taxes, forfeitures and statutory tax withholding requirements, as well as classification in the statement of cash flows. We adopted this standard effective January 1, 2017, with no impact to our financial condition or results of operations. The new standard also requires that employee taxes paid when an employer withholds units for

tax withholding purposes be reported as financing activities in the statement of cash flows on a retrospective basis. Previously, this activity was included in our operating activities. The impact of this change for the three months ended March 31, 2017 was not material to our consolidated statement of cash flows. Finally, consistent with our existing policy, we have elected to account for forfeitures on an estimated basis.

Revenue Recognition

In May 2014, an accounting standard update was issued requiring revenue to be recognized when promised goods or services are transferred to customers in an amount that reflects the expected consideration for these goods or services. This standard had an effective date of January 1, 2018, and we have accounted for the new guidance using the modified retrospective implementation method, whereby a cumulative effect adjustment is recorded to retained earnings as of the date of initial application. In preparing

for adoption, we evaluated the terms, conditions and performance obligations under our existing contracts with customers. Furthermore, we implemented policies to comply with this new standard. See Note 3 for additional information on our revenue recognition policies.

Business Combinations

In December 2014, an accounting standard update was issued to provide new guidance on the definition of a business in relation to accounting for identifiable intangible assets in business combinations. This standard had an effective date of January 1, 2018, and had no effect on our financial condition, results of operations or cash flows.

Financial Assets and Liabilities

In January 2016, an accounting standard update was issued requiring changes in the accounting and disclosures for financial instruments. This standard was effective beginning with our 2018 reporting year and had no effect on our financial condition, results of operations or cash flows.

Accounting Pronouncements Not Yet Adopted

Leases

In February 2016, an accounting standard update was issued requiring leases to be measured and recognized as a lease liability, with a corresponding right-of-use asset on the balance sheet. This standard has an effective date of January 1, 2019, and we are evaluating the impact of this standard. In preparing for adoption, we have identified, reviewed and evaluated contracts containing lease and embedded lease arrangements. Additionally, we have acquired software and are implementing systems to facilitate lease capture and related accounting treatment.

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Acquisitions (Notes)

3 Months Ended

Mar. 31, 2018

Acquisitions [Abstract]

Mergers, Acquisitions and Dispositions Disclosures [Text Block]

Acquisitions

SLC Pipeline and Frontier Aspen

On October 31, 2017, we acquired the remaining 75% interest in SLC Pipeline LLC (“SLC Pipeline”) and the remaining 50% interest in Frontier Aspen LLC (“Frontier Aspen”) from subsidiaries of Plains All American Pipeline, L,P. (“Plains”), for cash consideration of $250 million. Prior to this acquisition, we held noncontrolling interests of 25% of SLC Pipeline and 50% of Frontier Aspen. As a result of the acquisitions, SLC Pipeline and Frontier Aspen are wholly-owned subsidiaries of HEP.

These acquisitions were accounted for as a business combination achieved in stages. Our pre-existing equity method investments in SLC Pipeline and Frontier Aspen were remeasured at an acquisition date fair value of $112 million since we now have a controlling interest, and we recognized a gain on the remeasurement in the fourth quarter of 2017 of $36.3 million. The fair value of our pre-existing equity method investments in SLC Pipeline and Frontier Aspen was estimated using Level 3 Inputs under the income method for these entities, adjusted for lack of control and marketability.

The total consideration of $363.8 million, consisting of initial cash consideration of $250 million, working capital adjustments of $1.8 million and the fair value of our preexisting equity method investments in SLC Pipeline and Frontier Aspen of $112 million, was allocated to the acquisition date fair value of assets and liabilities acquired as of the October 31, 2017 acquisition date, with the excess purchase price recorded as goodwill. The following summarizes the value of assets and liabilities acquired:

	(in thousands)
Cash and cash equivalents	$	4,609
Accounts receivable	4,919
Prepaid and other current assets	253
Properties and equipment	277,016
Intangible assets	70,182
Goodwill	11,615
Accounts payable	(3,311		)
Accrued property taxes	(1,438		)
Other current liabilities	(65		)
Net assets acquired	$	363,780

We have assigned a preliminary estimate of fair value to the assets acquired and liabilities assumed, and, therefore, our allocation

may change once all needed information has become available and we complete our valuations.

SLC Pipeline is the owner of a 95-mile crude pipeline that transports crude oil into the Salt Lake City area from the Utah terminal

of the Frontier Pipeline (defined below) and from Wahsatch Station. Frontier Aspen is the owner of a 289-mile crude pipeline from Casper, Wyoming to Frontier Station, Utah (the “Frontier Pipeline”) that supplies Canadian and Rocky Mountain crudes to Salt Lake City area refiners through a connection to the SLC Pipeline.

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Revenues

3 Months Ended

Mar. 31, 2018

Revenue from Contract with Customer [Abstract]

Revenues

Revenues

Revenues are generally recognized as products are shipped through our pipelines and terminals, feedstocks are processed through our refinery processing units or other services are rendered. The majority of our contracts with customers meet the definition of a lease since (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 the customer will take more than a minor amount of the output associated with the specified property, plant, or equipment. Therefore, we bifurcate the consideration received between lease and service revenue. The service component is within the scope of Accounting Standards Codification (“ASC”) 606, which largely codified ASU 2014-09.

Several of our contracts include incentive or reduced tariffs once a certain quarterly volume is met. Revenue from the variable element of these transactions is recognized based on the actual volumes shipped as it relates specifically to rendering the services during the applicable quarter.

We adopted the new revenue recognition standard (see Note 1) using the modified retrospective method, whereby the cumulative effect of applying the new standard was recorded as an adjustment to the opening balance of retained earnings as well as the carrying amounts of assets and liabilities as of January 1, 2018, which had no impact on our cash flows. The following table reflects the cumulative effect of adoption as of January 1, 2018:

	Prior to Adoption		Increase (Decrease)			As Adjusted
	(In millions)
Deferred revenue	$	9,598	$	(1,320	)	$	8,278
Partners’ equity: Common unitholders	$	393,959	$	1,320		$	395,279

The majority of our long-term transportation contracts specify minimum volume requirements, whereby, we bill a customer for a minimum level of shipments in the event a customer ships below their contractual requirements. If there are no future performance obligations, we will recognize these deficiency payments in revenue.

In certain of these throughput agreements, a customer may later utilize such shortfall billings as credit towards future volume shipments in excess of its minimum levels within its respective contractual shortfall make-up period. Such amounts represent an obligation to perform future services, which may be initially deferred and later recognized as revenue based on estimated future shipping levels, including the likelihood of a customer’s ability to utilize such amounts prior to the end of the contractual shortfall make-up period. We recognize the service portion of these deficiency payments in revenue when we do not expect we will be required to satisfy these performance obligations in the future based on the pattern of rights exercised by the customer. During the first quarter of 2018, we recognized $3.6 million of these deficiency payments in revenue, of which $2.2 million related to deficiency payments billed in prior periods, and we have recorded $2.5 million as deferred revenue.

	March 31, 2018			January 1, 2018
	(In thousands)
Contract asset	$	1,711		$	—
Contract liability	$	(2,479	)	$	(2,713	)

The contract assets and liabilities include both lease and service components. We recognized $2.2 million in revenue during the three months ended March 31, 2018, that was previously included in contract liability as of January 1, 2018.

As of March 31, 2018, we expect to recognize $2.5 billion in revenue related to our unfulfilled performance obligations under the terms of our long-term throughput agreements and operating leases expiring in 2019 through 2036. These agreements provide for changes in the minimum revenue guarantees annually for increases or decreases in the Producer Price Index (“PPI”) or Federal Energy Regulatory Commission (“FERC”) index, with certain contracts having provisions that limit the level of the rate increases or decreases. We expect to recognize revenue for these unfulfilled performance obligation as shown in the table below (amounts shown in table include both service and lease revenues):

Years Ending December 31,	(In millions)
Remainder of 2018	$	284
2019	350
2020	300
2021	293
2022	267
Thereafter	1,004
Total	$	2,498

Payment terms under our contracts with customers are consistent with industry norms and are typically payable within 10 to 30 days of the date of invoice.

Disaggregated revenues are as follows:

	Three Months Ended March 31,
	2018		2017
	(In thousands)
Pipelines	$	72,169	$	52,447
Terminals, tanks and loading racks	38,181		33,807
Refinery processing units	18,534		19,380
	$	128,884	$	105,634

During the three months ended March 31, 2018, lease revenues amounted to $71.0 million and service revenues amounted to $57.9 million. Both of these revenues were recorded within affiliates and third parties revenues on our consolidated statement of income.

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Financial Instruments

3 Months Ended

Mar. 31, 2018

Fair Value Disclosures [Abstract]

Financial Instruments

Financial Instruments

Our financial instruments consist of cash and cash equivalents, accounts receivable, accounts payable, debt and interest rate swaps. The carrying amounts of cash equivalents, accounts receivable and accounts payable approximate fair value due to the short-term maturity of these instruments. Debt consists of outstanding principal under our revolving credit agreement (which approximates fair value as interest rates are reset frequently at current interest rates) and our fixed interest rate senior notes.

Fair value measurements are derived using inputs (assumptions that market participants would use in pricing an asset or liability) including assumptions about risk. GAAP categorizes inputs used in fair value measurements into three broad levels as follows:

• (Level 1) Quoted prices in active markets for identical assets or liabilities.

• (Level 2) Observable inputs other than quoted prices included in Level 1, such as quoted prices for similar assets and liabilities in active markets, similar assets and liabilities in markets that are not active or can be corroborated by observable market data.

• (Level 3) Unobservable inputs that are supported by little or no market activity and that are significant to the fair value of the assets or liabilities. This includes valuation techniques that involve significant unobservable inputs.

The carrying amounts and estimated fair values of our senior notes were as follows:

		March 31, 2018				December 31, 2017
Financial Instrument	Fair Value Input Level	Carrying Value		Fair Value		Carrying Value		Fair Value
		(In thousands)
Liabilities:
6% Senior notes	Level 2	495,452		511,740		495,308		525,120
		$	495,452	$	511,740	$	495,308	$	525,120

Level 2 Financial Instruments

Our senior notes are measured at fair value using Level 2 inputs. The fair value of the senior notes is based on market values provided by a third-party bank, which were derived using market quotes for similar type debt instruments. See Note 8 for additional information.

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Properties and Equipment

3 Months Ended

Mar. 31, 2018

Property, Plant and Equipment [Abstract]

Properties and Equipment

Properties and Equipment

The carrying amounts of our properties and equipment are as follows:

	March 31, 2018		December 31, 2017
	(In thousands)
Pipelines, terminals and tankage	$	1,541,596	$	1,541,722
Refinery assets	347,338		347,338
Land and right of way	86,445		86,484
Construction in progress	24,134		12,029
Other	36,210		35,659
	2,035,723		2,023,232
Less accumulated depreciation	474,669		453,761
	$	1,561,054	$	1,569,471

We capitalized $0.1 million and $0.2 million during the three months ended March 31, 2018 and 2017, respectively, in interest attributable to construction projects.

Depreciation expense was $20.9 million and $16.9 million for the three months ended March 31, 2018 and 2017, respectively, and includes depreciation of assets acquired under capital leases.

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Intangible Assets

3 Months Ended

Mar. 31, 2018

Goodwill and Intangible Assets Disclosure [Abstract]

Intangible Assets

Intangible assets include transportation agreements and customer relationships that represent a portion of the total purchase price of certain assets acquired from Delek in 2005, from HFC in 2008 prior to HEP becoming a consolidated VIE of HFC and from Plains in 2017.

The carrying amounts of our intangible assets are as follows:

	Useful Life	March 31, 2018		December 31, 2017
		(In thousands)
Delek transportation agreement	30 years	$	59,933	$	59,933
HFC transportation agreement	10-15 years	75,131		75,131
Customer relationships	10 years	69,282		69,282
Other		50		50
		204,396		204,396
Less accumulated amortization		78,969		74,933
		$	125,427	$	129,463

Amortization expense was $4.0 million and $1.7 million for the three months ended March 31, 2018 and 2017, respectively. We estimate amortization expense to be $14.0 million for each of the next four years and $9.8 million in 2023.

We have additional transportation agreements with HFC resulting from historical transactions consisting of pipeline, terminal and tankage assets contributed to us or acquired from HFC. These transactions occurred while we were a consolidated VIE of HFC; therefore, our basis in these agreements is zero and does not reflect a step-up in basis to fair value.

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Employees, Retirement and Incentive Plans

3 Months Ended

Mar. 31, 2018

Disclosure of Compensation Related Costs, Share-based Payments [Abstract]

Employees, Retirement and Incentive Plans

Employees, Retirement and Incentive Plans

Direct support for our operations is provided by Holly Logistic Services, L.L.C. (“HLS”), an HFC subsidiary, which utilizes personnel employed by HFC who are dedicated to performing services for us. Their costs, including salaries, bonuses, payroll taxes, benefits and other direct costs, are charged to us monthly in accordance with an omnibus agreement that we have with HFC. These employees participate in the retirement and benefit plans of HFC. Our share of retirement and benefit plan costs was $1.8 million and $1.7 million for the three months ended March 31, 2018 and 2017, respectively.

Under HLS’s secondment agreement with HFC (the “Secondment Agreement”), certain employees of HFC are seconded to HLS to provide operational and maintenance services for certain of our processing, refining, pipeline and tankage assets, and HLS reimburses HFC for its prorated portion of the wages, benefits, and other costs related to these employees.

We have a Long-Term Incentive Plan for employees and non-employee directors who perform services for us. The Long-Term Incentive Plan consists of four components: restricted or phantom units, performance units, unit options and unit appreciation rights. Our accounting policy for the recognition of compensation expense for awards with pro-rata vesting (a significant proportion of our awards) is to expense the costs ratably over the vesting periods.

As of March 31, 2018, we had two types of incentive-based awards outstanding, which are described below. The compensation cost charged against income was $0.8 million and $0.3 million for the three months ended March 31, 2018 and 2017, respectively. We currently purchase units in the open market instead of issuing new units for settlement of all unit awards under our Long-Term Incentive Plan. As of March 31, 2018, 2,500,000 units were authorized to be granted under our Long-Term Incentive Plan, of which 1,323,089 have not yet been granted, assuming no forfeitures of the unvested units and full achievement of goals for the unvested performance units.

Restricted and Phantom Units

Under our Long-Term Incentive Plan, we grant restricted units to non-employee directors and phantom units to selected employees who perform services for us, with most awards vesting over a period of one to three years. We previously granted restricted units to selected employees who perform services for us, which vest over a period of three years. Although full ownership of the units does not transfer to the recipients until the units vest, the recipients have distribution rights on these units from the date of grant, and the recipients of the restricted units have voting rights on the restricted units from the date of grant.

The fair value of each restricted or phantom unit award is measured at the market price as of the date of grant and is amortized on a straight-line basis over the requisite service period for each separately vesting portion of the award.

A summary of restricted and phantom unit activity and changes during the three months ended March 31, 2018, is presented below:

Restricted and Phantom Units	Units	Weighted Average Grant-Date Fair Value
Outstanding at January 1, 2018 (nonvested)	119,009	$	34.77
Granted	12,890	30.23
Outstanding at March 31, 2018 (nonvested)	131,899	$	34.33

No restricted units were vested and transferred to recipients during the three months ended March 31, 2018. As of March 31, 2018, there was $2.3 million of total unrecognized compensation expense related to unvested restricted and phantom unit grants, which is expected to be recognized over a weighted-average period of 1.3 years.

Performance Units

Under our Long-Term Incentive Plan, we grant performance units to selected officers who perform services for us. Performance units granted are payable in common units at the end of a three-year performance period based upon the growth in our distributable cash flow per common unit over the performance period. As of March 31, 2018, estimated unit payouts for outstanding nonvested performance unit awards ranged between 100% and 150% of the target number of performance units granted.

We granted 2,764 performance units during the three months ended March 31, 2018. Performance units granted in 2017 and 2018 vest over a three-year performance period ending December 31, 2020 and 2021, respectively, and are payable in HEP common units. The number of units actually earned will be based on the growth of our distributable cash flow per common unit over the performance period, and can range from 50% to 150% of the target number of performance units granted. Although common units are not transferred to the recipients until the performance units vest, the recipients have distribution rights with respect to the common units from the date of grant.

A summary of performance unit activity and changes for the three months ended March 31, 2018, is presented below:

Performance Units	Units
Outstanding at January 1, 2018 (nonvested)	36,911
Granted	2,764
Vesting and transfer of common units to recipients	(4,283	)
Outstanding at March 31, 2018 (nonvested)	35,392

The grant date fair value of performance units vested and transferred to recipients during both the three months ended March 31, 2018 and 2017 was $0.1 million. Based on the weighted average fair value of performance units outstanding at March 31, 2018, of $1.2 million, there was $0.8 million of total unrecognized compensation expense related to nonvested performance units, which is expected to be recognized over a weighted-average period of 1.8 years.

During the three months ended March 31, 2018, we did not purchase any common units in the open market for the issuance and

settlement of unit awards under our Long-Term Incentive Plan.

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Debt

3 Months Ended

Mar. 31, 2018

Debt Instruments [Abstract]

Debt

Debt

Credit Agreement

We have a $1.4 billion senior secured revolving credit facility (the “Credit Agreement”) expiring in July 2022. The Credit Agreement is available to fund capital expenditures, investments, acquisitions, distribution payments and working capital and for general partnership purposes. The Credit Agreement is also available to fund letters of credit up to a $50 million sub-limit, and it contains an accordion feature giving us the ability to increase the size of the facility by up to $300 million with additional lender commitments.

Our obligations under the Credit Agreement are collateralized by substantially all of our assets, and indebtedness under the Credit Agreement is guaranteed by our material, wholly-owned subsidiaries.  The Credit Agreement requires us to maintain compliance with certain financial covenants consisting of total leverage, senior secured leverage, and interest coverage.  It also limits or restricts our ability to engage in certain activities.  If, at any time prior to the expiration of the Credit Agreement, HEP obtains two investment grade credit ratings, the Credit Agreement will become unsecured and many of the covenants, limitations, and restrictions will be eliminated.

We may prepay all loans at any time without penalty, except for tranche breakage costs.  If an event of default exists under the Credit Agreement, the lenders will be able to accelerate the maturity of all loans outstanding and exercise other rights and remedies.  We were in compliance with the covenants as of March 31, 2018.

Senior Notes

On July 19, 2016, we closed a private placement of $400 million in aggregate principal amount of 6% senior unsecured notes due in 2024 (the “ 6% Senior Notes”). On September 22, 2017, we closed a private placement of an additional $100 million in aggregate principal amount of the 6% Senior Notes for a combined aggregate principal amount outstanding of $500 million maturing in 2024.

The 6% Senior Notes are unsecured and impose certain restrictive covenants, including limitations on our ability to incur additional indebtedness, make investments, sell assets, incur certain liens, pay distributions, enter into transactions with affiliates and enter into mergers. We were in compliance with the restrictive covenants for the 6% Senior Notes as of March 31, 2018. At any time when the 6% Senior Notes are rated investment grade by both Moody’s and Standard & Poor’s and no default or event of default exists, we will not be subject to many of the foregoing covenants. Additionally, we have certain redemption rights at varying premiums over face value under the 6% Senior Notes.

Indebtedness under the 6% Senior Notes is guaranteed by our wholly-owned subsidiaries.

On January 4, 2017, we redeemed the $300 million aggregate principal amount of 6.5% senior notes due in 2020 (the “6.5% Senior Notes”) at a redemption cost of $309.8 million at which time we recognized a $12.2 million early extinguishment loss consisting of a $9.8 million debt redemption premium and unamortized discount and financing costs of $2.4 million. We funded the redemption with borrowings under our Credit Agreement.

Long-term Debt

The carrying amounts of our long-term debt are as follows:

	March 31, 2018			December 31, 2017
	(In thousands)
Credit Agreement
Amount outstanding	$	895,500		$	1,012,000
6% Senior Notes
Principal	500,000			500,000
Unamortized premium and debt issuance costs	(4,548		)	(4,692		)
	495,452			495,308
Total long-term debt	$	1,390,952		$	1,507,308

Interest Rate Risk Management

The two interest rate swaps that hedged our exposure to the cash flow risk caused by the effects of LIBOR changes on $150 million of Credit Agreement advances matured on July 31, 2017. The swaps had effectively converted $150 million of our LIBOR based debt to fixed rate debt.

Interest Expense and Other Debt Information

Interest expense consists of the following components:

	Three Months Ended March 31,
	2018		2017
	(In thousands)
Interest on outstanding debt:
Credit Agreement, net of interest on interest rate swaps	$	8,944	$	6,449
6.5% Senior Notes	—		162
6% Senior Notes	7,500		6,000
Amortization of discount and deferred debt issuance costs	757		770
Commitment fees and other	477		354
Total interest incurred	17,678		13,735
Less capitalized interest	97		196
Net interest expense	$	17,581	$	13,539
Cash paid for interest	$	16,599	$	26,517

Capital Lease Obligations

We have capital lease obligations related to vehicle leases with initial terms of 33 to 48 months. Such obligations totaled $2.2 million and $1.9 million as of March 31, 2018 and December 31, 2017, respectively, and are included in other current and long-term liabilities on the consolidated balance sheets. The total cost of assets under capital leases was $5.7 million and $5.1 million as of March 31, 2018 and December 31, 2017, respectively, with accumulated depreciation of $3.5 million and $3.3 million as of March 31, 2018 and December 31, 2017, respectively. We include depreciation of capital leases in depreciation and amortization in our consolidated statements of income.

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Significant Customers

3 Months Ended

Mar. 31, 2018

Risks and Uncertainties [Abstract]

Significant Customers

Significant Customers

All revenues are domestic revenues, of which 84% are currently generated from our two largest customers: HFC and Delek.

The following table presents the percentage of total revenues generated by each of these customers:

	Three Months Ended March 31,
	2018		2017
HFC	79	%	84	%
Delek	5	%	8	%

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Related Party Transactions

3 Months Ended

Mar. 31, 2018

Related Party Transactions [Abstract]

Related Party Transactions

Related Party Transactions

We serve HFC’s refineries under long-term pipeline, terminal and tankage throughput agreements, and refinery processing unit tolling agreements expiring from 2019 to 2036. Under these agreements, HFC agrees to transport, store and process throughput volumes of refined product, crude oil and feedstocks on our pipelines, terminals, tankage, loading rack facilities and refinery processing units that result in minimum annual payments to us. These minimum annual payments or revenues are subject to annual rate adjustments on July 1st each year generally based on increases or decreases in PPI or the FERC index. As of March 31, 2018, these agreements with HFC require minimum annualized payments to us of $332.7 million.

If HFC fails to meet its minimum volume commitments under the agreements in any quarter, it will be required to pay us the amount of any shortfall in cash by the last day of the month following the end of the quarter. Under certain of these agreements, a shortfall payment may be applied as a credit in the following four quarters after its minimum obligations are met.

Under certain provisions of an omnibus agreement we have with HFC (the “Omnibus Agreement”), we pay HFC an annual administrative fee (currently $2.5 million) for the provision by HFC or its affiliates of various general and administrative services to us. This fee does not include the salaries of personnel employed by HFC who perform services for us on behalf of HLS or the cost of their employee benefits, which are charged to us separately by HFC. Also, we reimburse HFC and its affiliates for direct expenses they incur on our behalf.

Related party transactions with HFC are as follows:

• Revenues received from HFC were $101.4 million and $89.0 million for the three months ended March 31, 2018 and 2017, respectively.

• HFC charged us general and administrative services under the Omnibus Agreement of $0.6 million for each of the three months ended March 31, 2018 and 2017.

• We reimbursed HFC for costs of employees supporting our operations of $12.7 million and $11.4 million for the three months ended March 31, 2018 and 2017, respectively.

• HFC reimbursed us $1.2 million and $1.3 million for the three months ended March 31, 2018 and 2017, respectively, for expense and capital projects.

• We distributed $36.3 million and $30.3 million in the three months ended March 31, 2018 and 2017, respectively, to HFC as regular distributions on its common units in the three months ended March 31, 2018 and on its common units and general partner interest, including general partner incentive distributions, in the three months ended March 31, 2017.

• Accounts receivable from HFC were $41.6 million and $51.5 million at March 31, 2018, and December 31, 2017, respectively.

• Accounts payable to HFC were $10.7 million and $7.7 million at March 31, 2018, and December 31, 2017, respectively.

• Deferred revenue in the consolidated balance sheets at March 31, 2018 and December 31, 2017, includes $0.9 million and $4.4 million, respectively, relating to certain shortfall billings to HFC. It is possible that HFC may not exceed its minimum obligations to receive credit for any of the $0.9 million deferred at March 31, 2018.

• We received operating lease payments from HFC for use of our Artesia and Tulsa railyards of $0.5 million and $0.1 million for the three months ended March 31, 2018 and 2017, respectively.

• On October 31, 2017, we closed on an equity restructuring transaction with HEP Logistics, a wholly-owned subsidiary of HFC and the general partner of HEP, pursuant to which the incentive distribution rights held by HEP Logistics were canceled, and HEP Logistics' 2% general partner interest in HEP was converted into a non-economic general partner interest in HEP. In consideration, we issued 37,250,000 of our common units to HEP Logistics. In addition, HEP Logistics agreed to waive $2.5 million of limited partner cash distributions for each of twelve consecutive quarters beginning with the first quarter the units issued as consideration were eligible to receive distributions.

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Partners' Equity

3 Months Ended

Mar. 31, 2018

Partners' Capital [Abstract]

Partners' Equity

Partners’ Equity, Income Allocations and Cash Distributions

As of March 31, 2018, HFC held 59,630,030 of our common units, constituting a 57%limited partner interest in us, and held the

non-economic general partner interest. Additionally, HEP Logistics, our general partner, owned all incentive distribution rights through October 31, 2017, at which time we closed on an equity restructuring transaction with HEP Logistics pursuant to which the incentive distribution rights were canceled. See Note 1 for a description of this equity restructuring transaction.

On January 25, 2018, we entered into a common unit purchase agreement in which certain purchasers agreed to purchase in a private placement 3,700,000 common units representing limited partnership interests, at a price of $29.73 per common unit. The private placement closed on February 6, 2018, and we received proceeds of approximately $110 million, which were used to repay indebtedness under our Credit Agreement.

Continuous Offering Program

We have a continuous offering program under which we may issue and sell common units from time to time, representing limited partner interests, up to an aggregate gross sales amount of $200 million. For the three months ended March 31, 2018, HEP issued 152,169 units under this program, providing approximately $4.6 million in gross proceeds. As of March 31, 2018, HEP has issued 2,394,076 units under this program, providing $81.7 million in gross proceeds.

We intend to use our net proceeds for general partnership purposes, which may include funding working capital, repayment of debt, acquisitions and capital expenditures. Amounts repaid under our credit facility may be reborrowed from time to time.

Allocations of Net Income

Net income attributable to HEP is allocated to the partners based on their weighted-average ownership percentage during the period.

Prior to the equity restructuring of the general partner interest owned by HEP Logistics described in Note 1 that occurred on October 31, 2017, net income attributable to HEP was allocated between limited partners and the general partner interest in accordance with the provisions of the partnership agreement. HEP net income allocated to the general partner included incentive distributions that were declared subsequent to quarter end. After incentive distributions and other priority allocations were allocated to the general partner, the remaining net income attributable to HEP was allocated to the partners based on their weighted-average ownership percentage during the period.

The following table presents the allocation of the general partner interest in net income for the periods presented below:

	Three Months Ended March 31,
	2018		2017
	(In thousands)
General partner interest in net income	$	—	$	511
General partner incentive distribution	—		16,627
Total general partner interest in net income	$	—	$	17,138

Cash Distributions

On April 19, 2018, we announced our cash distribution for the first quarter of 2018 of $0.6550 per unit. The distribution is payable on all common units and will be paid May 10, 2018, to all unitholders of record on April 30, 2018. However, HEP Logistics will waive $2.5 million in limited partner cash distributions in accordance with the equity restructuring discussed in Note 1.

Prior to the equity restructuring of the general partner interest owned by HEP Logistics that occurred on October 31, 2017, our general partner, HEP Logistics, was entitled to incentive distributions if the amount we distributed with respect to any quarter exceeded specified target levels. After the restructuring of the general partner interest, the general partner interest was no longer entitled to any distributions.

The following table presents the allocation of our regular quarterly cash distributions to the general and limited partners for the periods in which they apply. Our distributions are declared subsequent to quarter end; therefore, the amounts presented do not reflect distributions paid during the periods presented below.

	Three Months Ended March 31,
	2018		2017
	(In thousands, except per unit data)
General partner interest in distribution	$	—	$	1,148
General partner incentive distribution	—		16,627
Total general partner distribution	—		17,775
Limited partner distribution	66,551		39,632
Total regular quarterly cash distribution	$	66,551	$	57,407
Cash distribution per unit applicable to limited partners	$	0.6550	$	0.6200

As a master limited partnership, we distribute our available cash, which historically has exceeded our net income attributable to HEP because depreciation and amortization expense represents a non-cash charge against income. The result is a decline in our partners’ equity since our regular quarterly distributions have exceeded our quarterly net income attributable to HEP. Additionally, if the asset contributions and acquisitions from HFC had occurred while we were not a consolidated variable interest entity of HFC, our acquisition cost, in excess of HFC’s historical basis in the transferred assets, would have been recorded in our financial statements at the time of acquisition as increases to our properties and equipment and intangible assets instead of decreases to our partners’ equity.

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Net Income per Limited Partner Unit (Notes)

3 Months Ended

Mar. 31, 2018

Net Income per Limited Partner Unit [Abstract]

Net Income Per Limited Partner Unit

Net Income Per Limited Partner Unit

Net income per unit applicable to the limited partners is computed using the two-class method, since we have more than one participating security as of March 31, 2018, common units and restricted units. Prior to the equity restructuring transaction described in Note 1, which was effective October 31, 2017, we had participating securities which included the aforementioned common units and restricted units as well as general partner units and IDRs. After the equity restructuring, the general partner interest was no longer entitled to any distributions, and none were made on the general partner interest after October 31, 2017.

To the extent net income attributable to the partners exceeds or is less than cash distributions, this difference is allocated to the partners based on their weighted-average ownership percentage during the period, after consideration of any priority allocations of earnings. Our dilutive securities, restricted units, are immaterial for all periods presented.

For purposes of applying the two-class method, including the allocation of cash distributions in excess of earnings, net income per limited partner unit is computed as follows:

	Three Months Ended March 31,
	2018			2017
	(In thousands)
Net income attributable to the partners	$	46,168		$	25,563
Less: General partner’s distribution declared (including IDRs)	—			(17,775		)
Limited partner’s distribution declared on common units	(66,551		)	(39,632		)
Distributions in excess of net income attributable to the partners	$	(20,383	)	$	(31,844	)

	General Partner (including IDRs)			Limited Partners’ Common Units			Total
	(In thousands, except per unit data)
Three Months Ended March 31, 2018
Net income attributable to the partners:
Distributions declared	$	—		$	66,551		$	66,551
Distributions in excess of net income attributable to the partners				(20,383		)	(20,383		)
Net income attributable to the partners	$	—		$	46,168		$	46,168
Weighted average limited partners' units outstanding				103,836
Limited partners' per unit interest in earnings - basic and diluted				$	0.44
Three Months Ended March 31, 2017
Net income attributable to the partners:
Distributions declared	$	17,775		$	39,632		$	57,407
Distributions in excess of net income attributable to the partners	(637		)	(31,207		)	(31,844		)
Net income attributable to the partners	$	17,138		$	8,425		$	25,563
Weighted average limited partners' units outstanding				63,113
Limited partners' per unit interest in earnings - basic and diluted				$	0.13

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Environmental

3 Months Ended

Mar. 31, 2018

Accrual for Environmental Loss Contingencies [Abstract]

Environmental

Environmental

We incurred no expenses for the three months ended March 31, 2018 and 2017 for environmental remediation obligations. The accrued environmental liability, net of expected recoveries from indemnifying parties, reflected in our consolidated balance sheets was $6.4 million and $6.5 million at March 31, 2018 and December 31, 2017, respectively, of which $4.9 million and $5.0 million, respectively, were classified as other long-term liabilities. These accruals include remediation and monitoring costs expected to be incurred over an extended period of time.

Under the Omnibus Agreement and certain transportation agreements and purchase agreements with HFC, HFC has agreed to indemnify us, subject to certain monetary and time limitations, for environmental noncompliance and remediation liabilities associated with certain assets transferred to us from HFC and occurring or existing prior to the date of such transfers. As of March 31, 2018 and December 31, 2017, our consolidated balance sheets included additional accrued environmental liabilities of $0.7 million and $0.8 million, respectively, for HFC indemnified liabilities, and other assets included equal and offsetting balances representing amounts due from HFC related to indemnifications for environmental remediation liabilities.

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Contingencies

3 Months Ended

Mar. 31, 2018

Commitments and Contingencies Disclosure [Abstract]

Contingencies

Contingencies

We are a party to various legal and regulatory proceedings, none of which we believe will have a material adverse impact on our financial condition, results of operations or cash flows.

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Segments (Notes)

3 Months Ended

Mar. 31, 2018

Segment Reporting [Abstract]

Segment Reporting Disclosure [Text Block]

Operating Segments

Although financial information is reviewed by our chief operating decision makers from a variety of perspectives, they view the business in two operating segments: pipelines and terminals, and refinery processing units. These operating segments adhere to the accounting polices used for our consolidated financial statements.

The pipelines and terminals segment has been aggregated as both pipeline and terminals (1) have similar economic characteristics,(2) similarly provide logistics services of transportation and storage of petroleum products, (3) similarly support the petroleum refining business, including distribution of its products, (4) have principally the same customers and (5) are subject to similar regulatory requirements.

We evaluate the performance of each segment based on its respective operating income. Certain general and administrative expenses and interest and financing costs are excluded from segment operating income as they are not directly attributable to a specific operating segment. Identifiable assets are those used by the segment, whereas other assets are principally equity method investments, cash, deposits and other assets that are not associated with a specific reportable operating segment.

	Three Months Ended March 31,
	2018			2017
Revenues:
Pipelines and terminals - affiliate	$	82,894		$	69,645
Pipelines and terminals - third-party	27,456			16,609
Refinery processing units - affiliate	18,534			19,380
Total segment revenues	$	128,884		$	105,634
Segment operating income:
Pipelines and terminals	$	60,213		$	46,485
Refinery processing units	7,327			7,883
Total segment operating income	67,540			54,368
Unallocated general and administrative expenses	(3,122		)	(2,634		)
Interest and financing costs, net	(17,066		)	(25,662		)
Equity in earnings of unconsolidated affiliates	1,279			1,840
Gain on sale of assets and other	86			73
Income before income taxes	$	48,717		$	27,985
Capital Expenditures:
Pipelines and terminals	$	12,612		$	8,129
Refinery processing units	—			136
Total capital expenditures	$	12,612		$	8,265

	March 31, 2018		December 31, 2017
	(in thousands)
Identifiable assets:
Pipelines and terminals (1)	$	1,711,880	$	1,728,074
Refinery processing units	324,570		328,585
Other	98,339		97,455
Total identifiable assets	$	2,134,789	$	2,154,114

(1) Includes goodwill of $268.2 million and $266.7 million as of March 31, 2018 and December 31, 2017, respectively.

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Supplemental Guarantor / Non-Guarantor Financial Information

3 Months Ended

Mar. 31, 2018

Supplemental Guarantor / Non-Guarantor Financial Information [Abstract]

Supplemental Guarantor / Non-Guarantor Financial Information

Supplemental Guarantor/Non-Guarantor Financial Information

Obligations of HEP (“Parent”) under the 6% Senior Notes have been jointly and severally guaranteed by each of its direct and indirect 100% owned subsidiaries (“Guarantor Subsidiaries”). These guarantees are full and unconditional, subject to certain customary release provisions. These circumstances include (i) when a Guarantor Subsidiary is sold or sells all or substantially all of its assets, (ii) when a Guarantor Subsidiary is declared “unrestricted” for covenant purposes, (iii) when a Guarantor Subsidiary’s guarantee of other indebtedness is terminated or released and (iv) when the requirements for legal defeasance or covenant defeasance or to discharge the senior notes have been satisfied.

The following financial information presents condensed consolidating balance sheets, statements of comprehensive income, and statements of cash flows of the Parent, the Guarantor Subsidiaries and the Non-Guarantor Subsidiaries. The information has been presented as if the Parent accounted for its ownership in the Guarantor Subsidiaries, and the Guarantor Restricted Subsidiaries accounted for the ownership of the Non-Guarantor Non-Restricted Subsidiaries, using the equity method of accounting.

Condensed Consolidating Balance Sheet

March 31, 2018	Parent		Guarantor Restricted Subsidiaries		Non-Guarantor Non-Restricted Subsidiaries		Eliminations			Consolidated
	(In thousands)
ASSETS
Current assets:
Cash and cash equivalents	$	2	$	1,485	$	7,078	$	—		$	8,565
Accounts receivable	—		51,428		4,935		(198		)	56,165
Prepaid and other current assets	226		2,427		355		—			3,008
Total current assets	228		55,340		12,368		(198		)	67,738
Properties and equipment, net	—		1,204,672		356,382		—			1,561,054
Investment in subsidiaries	1,879,597		272,530		—		(2,152,127		)	—
Intangible assets, net	—		125,427		—		—			125,427
Goodwill	—		268,166		—		—			268,166
Equity method investments	—		84,678		—		—			84,678
Other assets	11,096		16,630		—		—			27,726
Total assets	$	1,890,921	$	2,027,443	$	368,750	$	(2,152,325	)	$	2,134,789
LIABILITIES AND EQUITY
Current liabilities:
Accounts payable	$	—	$	20,691	$	3,461	$	(198	)	$	23,954
Accrued interest	6,079		—		—		—			6,079
Deferred revenue	—		8,497		—		—			8,497
Accrued property taxes	—		4,423		1,713		—			6,136
Other current liabilities	226		7,376		—		—			7,602
Total current liabilities	6,305		40,987		5,174		(198		)	52,268
Long-term debt	1,390,952		—		—		—			1,390,952
Other long-term liabilities	260		15,249		202		—			15,711
Deferred revenue	—		47,740		—		—			47,740
Class B unit	—		43,870		—		—			43,870
Equity - partners	493,404		1,879,597		272,530		(2,152,127		)	493,404
Equity - noncontrolling interest	—		—		90,844		—			90,844
Total liabilities and equity	$	1,890,921	$	2,027,443	$	368,750	$	(2,152,325	)	$	2,134,789

Condensed Consolidating Balance Sheet

December 31, 2017	Parent		Guarantor Restricted Subsidiaries		Non-Guarantor Non-Restricted Subsidiaries		Eliminations			Consolidated
	(In thousands)
ASSETS
Current assets:
Cash and cash equivalents	$	2	$	511	$	7,263	$	—		$	7,776
Accounts receivable	—		59,448		5,038		(182		)	64,304
Prepaid and other current assets	13		2,016		282		—			2,311
Total current assets	15		61,975		12,583		(182		)	74,391
Properties and equipment, net	—		1,213,626		355,845		—			1,569,471
Investment in subsidiaries	1,902,285		273,319		—		(2,175,604		)	—
Intangible assets, net	—		129,463		—		—			129,463
Goodwill	—		266,716		—		—			266,716
Equity method investments	—		85,279		—		—			85,279
Other assets	11,753		17,041		—		—			28,794
Total assets	$	1,914,053	$	2,047,419	$	368,428	$	(2,175,786	)	$	2,154,114
LIABILITIES AND EQUITY
Current liabilities:
Accounts payable	$	—	$	20,928	$	1,526	$	(182	)	$	22,272
Accrued interest	12,500		756		—		—			13,256
Deferred revenue	—		8,540		1,058		—			9,598
Accrued property taxes	—		3,431		1,221		—			4,652
Other current liabilities	—		5,707		—		—			5,707
Total current liabilities	12,500		39,362		3,805		(182		)	55,485
Long-term debt	1,507,308		—		—		—			1,507,308
Other long-term liabilities	286		15,359		198		—			15,843
Deferred revenue	—		47,272		—		—			47,272
Class B unit	—		43,141		—		—			43,141
Equity - partners	393,959		1,902,285		273,319		(2,175,604		)	393,959
Equity - noncontrolling interest	—		—		91,106		—			91,106
Total liabilities and equity	$	1,914,053	$	2,047,419	$	368,428	$	(2,175,786	)	$	2,154,114

Condensed Consolidating Statement of Comprehensive Income

Three Months Ended March 31, 2018	Parent			Guarantor Restricted Subsidiaries			Non-Guarantor Non-restricted Subsidiaries			Eliminations			Consolidated
	(In thousands)
Revenues:
Affiliates	$	—		$	94,291		$	7,137		$	—		$	101,428
Third parties	—			19,978			7,478			—			27,456
	—			114,269			14,615			—			128,884
Operating costs and expenses:
Operations (exclusive of depreciation and amortization)	—			32,664			3,538			—			36,202
Depreciation and amortization				21,001			4,141			—			25,142
General and administrative	1,280			1,842			—			—			3,122
	1,280			55,507			7,679			—			64,466
Operating income (loss)	(1,280		)	58,762			6,936			—			64,418
Other income (expense):
Equity in earnings of subsidiaries	65,052			5,212			—			(70,264		)	—
Equity in earnings of equity method investments	—			1,279			—			—			1,279
Interest expense	(17,649		)	68			—			—			(17,581		)
Interest income	—			515			—			—			515
Gain on sale of assets and other	45			28			13			—			86
	47,448			7,102			13			(70,264		)	(15,701		)
Income before income taxes	46,168			65,864			6,949			(70,264		)	48,717
State income tax expense	—			(82		)	—			—			(82		)
Net income	46,168			65,782			6,949			(70,264		)	48,635
Allocation of net income attributable to noncontrolling interests	—			(730		)	(1,737		)	—			(2,467		)
Net income attributable to the partners	46,168			65,052			5,212			(70,264		)	46,168
Other comprehensive income	—			—			—			—			—
Comprehensive income attributable to the partners	$	46,168		$	65,052		$	5,212		$	(70,264	)	$	46,168

Condensed Consolidating Statement of Comprehensive Income

Three Months Ended March 31, 2017	Parent			Guarantor Restricted Subsidiaries			Non-Guarantor Non-Restricted Subsidiaries			Eliminations			Consolidated
	(In thousands)
Revenues:
Affiliates	$	—		$	80,776		$	8,249		$	—		$	89,025
Third parties	—			11,003			5,606			—			16,609
	—			91,779			13,855			—			105,634
Operating costs and expenses:
Operations (exclusive of depreciation and amortization)	—			29,092			3,397			—			32,489
Depreciation and amortization	—			14,853			3,924			—			18,777
General and administrative	1,155			1,479			—			—			2,634
	1,155			45,424			7,321			—			53,900
Operating income (loss)	(1,155		)	46,355			6,534			—			51,734
Other income (expense):
Equity in earnings of subsidiaries	45,283			4,901			—			(50,184		)	—
Equity in earnings of equity method investments	—			1,840			—			—			1,840
Interest expense	(6,340		)	(7,199		)	—			—			(13,539		)
Interest income	—			102			—			—			102
Loss on early extinguishment of debt	(12,225		)	—			—			—			(12,225		)
Gain on sale of assets and other	—			72			1			—			73
	26,718			(284		)	1			(50,184		)	(23,749		)
Income before income taxes	25,563			46,071			6,535			(50,184		)	27,985
State income tax expense	—			(106		)	—			—			(106		)
Net income	25,563			45,965			6,535			(50,184		)	27,879
Allocation of net income attributable to noncontrolling interests	—			(682		)	(1,634		)	—			(2,316		)
Net income attributable to the partners	25,563			45,283			4,901			(50,184		)	25,563
Other comprehensive income	63			63			—			(63		)	63
Comprehensive income attributable to the partners	$	25,626		$	45,346		$	4,901		$	(50,247	)	$	25,626

Condensed Consolidating Statement of Cash Flows

Three Months Ended March 31, 2018	Parent			Guarantor Restricted Subsidiaries			Non-Guarantor Non-Restricted Subsidiaries			Eliminations			Consolidated
	(In thousands)
Cash flows from operating activities	$	(23,679	)	$	98,013		$	11,398		$	(5,212	)	$	80,520
Cash flows from investing activities
Additions to properties and equipment	—			(9,029		)	(3,583		)	—			(12,612		)
Distributions from UNEV in excess of earnings	—			788			—			(788		)	—
Proceeds from sale of assets	—			22			—			—			22
Distributions in excess of equity in earnings of equity investments	—			358			—			—			358
	—			(7,861		)	(3,583		)	(788		)	(12,232		)
Cash flows from financing activities
Net repayments under credit agreement	(116,500		)	—			—			—			(116,500		)
Net intercompany financing activities	89,060			(89,060		)	—			—			—
Proceeds from issuance of common units	114,376			153			—			—			114,529
Contribution from general partner	297			—			—			—			297
Distributions to HEP unitholders	(63,496		)	—			—			—			(63,496		)
Distributions to noncontrolling interests	—			—			(8,000		)	6,000			(2,000		)
Units withheld for tax withholding obligations	(58		)	—			—			—			(58		)
Deferred financing cost	—			6			—			—			6
Other	—			(277		)	—			—			(277		)
	23,679			(89,178		)	(8,000		)	6,000			(67,499		)
Cash and cash equivalents
Increase (decrease) for the period	—			974			(185		)	—			789
Beginning of period	2			511			7,263			—			7,776
End of period	$	2		$	1,485		$	7,078		$	—		$	8,565

Condensed Consolidating Statement of Cash Flows

Three Months Ended March 31, 2017	Parent			Guarantor Restricted Subsidiaries			Non-Guarantor Non-Restricted Subsidiaries			Eliminations			Consolidated
	(In thousands)
Cash flows from operating activities	$	(20,262	)	$	58,062		$	10,736		$	(4,901	)	$	43,635
Cash flows from investing activities
Additions to properties and equipment	—			(7,902		)	(363		)	—			(8,265		)
Proceeds from sale of assets	—			424			—			—			424
Distributions from UNEV in excess of earnings	—			1,099			—			(1,099		)	—
Distributions in excess of equity in earnings of equity investments	—			3,016			—			—			3,016
	—			(3,363		)	(363		)	(1,099		)	(4,825		)
Cash flows from financing activities
Net borrowings under credit agreement	—			294,000			—			—			294,000
Net intercompany financing activities	344,781			(344,781		)	—			—			—
Redemption of senior notes	(309,750		)	—			—			—			(309,750		)
Proceeds from issuance of common units	39,371			(1,808		)	—			—			37,563
Distributions to HEP unitholders	(54,807		)	2			—			—			(54,805		)
Distributions to noncontrolling interests	—			—			(8,000		)	6,000			(2,000		)
Distribution to HFC for El Dorado tanks	(103		)	—			—			—			(103		)
Contributions from general partner	805			(805		)	—			—			—
Units withheld for tax withholding obligations	(35		)	—			—			—			(35		)
Other	—			(330		)	—			—			(330		)
	20,262			(53,722		)	(8,000		)	6,000			(35,460		)
Cash and cash equivalents
Decrease for the period	—			977			2,373			—			3,350
Beginning of period	2			301			3,354			—			3,657
End of period	$	2		$	1,278		$	5,727		$	—		$	7,007

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Description of Business and Presentation of Financial Statements Accounting Policy Descriptions (Policies)

3 Months Ended

Mar. 31, 2018

Accounting Policies [Abstract]

Consolidation, Policy

Principles of Consolidation and Common Control Transactions

The consolidated financial statements include our accounts and those of subsidiaries and joint ventures that we control. All significant intercompany transactions and balances have been eliminated.

Most of our acquisitions from HFC occurred while we were a consolidated variable interest entity (“VIE”) of HFC. Therefore, as an entity under common control with HFC, we recorded these acquisitions on our balance sheets at HFC's historical basis instead of our purchase price or fair value.

New Accounting Pronouncements, Policy

Accounting Pronouncements Adopted During the Periods Presented

Share-Based Compensation

In March 2016, an accounting standard update was issued which simplifies the accounting for employee share-based payment transactions, including the accounting for income taxes, forfeitures and statutory tax withholding requirements, as well as classification in the statement of cash flows. We adopted this standard effective January 1, 2017, with no impact to our financial condition or results of operations. The new standard also requires that employee taxes paid when an employer withholds units for

tax withholding purposes be reported as financing activities in the statement of cash flows on a retrospective basis. Previously, this activity was included in our operating activities. The impact of this change for the three months ended March 31, 2017 was not material to our consolidated statement of cash flows. Finally, consistent with our existing policy, we have elected to account for forfeitures on an estimated basis.

Revenue Recognition

In May 2014, an accounting standard update was issued requiring revenue to be recognized when promised goods or services are transferred to customers in an amount that reflects the expected consideration for these goods or services. This standard had an effective date of January 1, 2018, and we have accounted for the new guidance using the modified retrospective implementation method, whereby a cumulative effect adjustment is recorded to retained earnings as of the date of initial application. In preparing

for adoption, we evaluated the terms, conditions and performance obligations under our existing contracts with customers. Furthermore, we implemented policies to comply with this new standard. See Note 3 for additional information on our revenue recognition policies.

Business Combinations

In December 2014, an accounting standard update was issued to provide new guidance on the definition of a business in relation to accounting for identifiable intangible assets in business combinations. This standard had an effective date of January 1, 2018, and had no effect on our financial condition, results of operations or cash flows.

Financial Assets and Liabilities

In January 2016, an accounting standard update was issued requiring changes in the accounting and disclosures for financial instruments. This standard was effective beginning with our 2018 reporting year and had no effect on our financial condition, results of operations or cash flows.

Accounting Pronouncements Not Yet Adopted

Leases

In February 2016, an accounting standard update was issued requiring leases to be measured and recognized as a lease liability, with a corresponding right-of-use asset on the balance sheet. This standard has an effective date of January 1, 2019, and we are evaluating the impact of this standard. In preparing for adoption, we have identified, reviewed and evaluated contracts containing lease and embedded lease arrangements. Additionally, we have acquired software and are implementing systems to facilitate lease capture and related accounting treatment.

Revenue Recognition, Policy

Revenues are generally recognized as products are shipped through our pipelines and terminals, feedstocks are processed through our refinery processing units or other services are rendered. The majority of our contracts with customers meet the definition of a lease since (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 the customer will take more than a minor amount of the output associated with the specified property, plant, or equipment. Therefore, we bifurcate the consideration received between lease and service revenue.

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Acquisitions (Tables)

3 Months Ended

Mar. 31, 2018

Business Acquisition [Line Items]

Schedule of Recognized Identified Assets Acquired and Liabilities Assumed [Table Text Block]

The following summarizes the value of assets and liabilities acquired:

	(in thousands)
Cash and cash equivalents	$	4,609
Accounts receivable	4,919
Prepaid and other current assets	253
Properties and equipment	277,016
Intangible assets	70,182
Goodwill	11,615
Accounts payable	(3,311		)
Accrued property taxes	(1,438		)
Other current liabilities	(65		)
Net assets acquired	$	363,780

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Revenues (Tables)

3 Months Ended

Mar. 31, 2018

Revenue from Contract with Customer [Abstract]

Schedule of Cumulative Effect of Adjustment

The following table reflects the cumulative effect of adoption as of January 1, 2018:

	Prior to Adoption		Increase (Decrease)			As Adjusted
	(In millions)
Deferred revenue	$	9,598	$	(1,320	)	$	8,278
Partners’ equity: Common unitholders	$	393,959	$	1,320		$	395,279

Schedule of Contract Asset and Contract Liability Balances

	March 31, 2018			January 1, 2018
	(In thousands)
Contract asset	$	1,711		$	—
Contract liability	$	(2,479	)	$	(2,713	)

Schedule of Future Performance Obligations

We expect to recognize revenue for these unfulfilled performance obligation as shown in the table below (amounts shown in table include both service and lease revenues):

Years Ending December 31,	(In millions)
Remainder of 2018	$	284
2019	350
2020	300
2021	293
2022	267
Thereafter	1,004
Total	$	2,498

Schedule of Disaggregated Revenue

Disaggregated revenues are as follows:

	Three Months Ended March 31,
	2018		2017
	(In thousands)
Pipelines	$	72,169	$	52,447
Terminals, tanks and loading racks	38,181		33,807
Refinery processing units	18,534		19,380
	$	128,884	$	105,634

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Financial Instruments (Tables)

3 Months Ended

Mar. 31, 2018

Fair Value Disclosures [Abstract]

Schedule of Fair Value, Financial Instruments Measured on Recurring Basis

The carrying amounts and estimated fair values of our senior notes were as follows:

		March 31, 2018				December 31, 2017
Financial Instrument	Fair Value Input Level	Carrying Value		Fair Value		Carrying Value		Fair Value
		(In thousands)
Liabilities:
6% Senior notes	Level 2	495,452		511,740		495,308		525,120
		$	495,452	$	511,740	$	495,308	$	525,120

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Properties and Equipment (Tables)

3 Months Ended

Mar. 31, 2018

Property, Plant and Equipment [Abstract]

Properties and Equipment

The carrying amounts of our properties and equipment are as follows:

	March 31, 2018		December 31, 2017
	(In thousands)
Pipelines, terminals and tankage	$	1,541,596	$	1,541,722
Refinery assets	347,338		347,338
Land and right of way	86,445		86,484
Construction in progress	24,134		12,029
Other	36,210		35,659
	2,035,723		2,023,232
Less accumulated depreciation	474,669		453,761
	$	1,561,054	$	1,569,471

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Intangible Assets (Tables)

3 Months Ended

Mar. 31, 2018

Goodwill and Intangible Assets Disclosure [Abstract]

Schedule of Finite-Lived Intangible Assets by Major Class

The carrying amounts of our intangible assets are as follows:

	Useful Life	March 31, 2018		December 31, 2017
		(In thousands)
Delek transportation agreement	30 years	$	59,933	$	59,933
HFC transportation agreement	10-15 years	75,131		75,131
Customer relationships	10 years	69,282		69,282
Other		50		50
		204,396		204,396
Less accumulated amortization		78,969		74,933
		$	125,427	$	129,463

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Employees, Retirement and Incentive Plans (Tables)

3 Months Ended

Mar. 31, 2018

Disclosure of Compensation Related Costs, Share-based Payments [Abstract]

Schedule of Nonvested Restricted Stock Units Activity

A summary of restricted and phantom unit activity and changes during the three months ended March 31, 2018, is presented below:

Restricted and Phantom Units	Units	Weighted Average Grant-Date Fair Value
Outstanding at January 1, 2018 (nonvested)	119,009	$	34.77
Granted	12,890	30.23
Outstanding at March 31, 2018 (nonvested)	131,899	$	34.33

Schedule of Nonvested Performance-based Units Activity

A summary of performance unit activity and changes for the three months ended March 31, 2018, is presented below:

Performance Units	Units
Outstanding at January 1, 2018 (nonvested)	36,911
Granted	2,764
Vesting and transfer of common units to recipients	(4,283	)
Outstanding at March 31, 2018 (nonvested)	35,392

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Debt (Tables)

3 Months Ended

Mar. 31, 2018

Debt Instruments [Abstract]

Schedule of Long-term Debt Instruments

The carrying amounts of our long-term debt are as follows:

	March 31, 2018			December 31, 2017
	(In thousands)
Credit Agreement
Amount outstanding	$	895,500		$	1,012,000
6% Senior Notes
Principal	500,000			500,000
Unamortized premium and debt issuance costs	(4,548		)	(4,692		)
	495,452			495,308
Total long-term debt	$	1,390,952		$	1,507,308

Schedule of Interest Expense and Other Debt Information

Interest expense consists of the following components:

	Three Months Ended March 31,
	2018		2017
	(In thousands)
Interest on outstanding debt:
Credit Agreement, net of interest on interest rate swaps	$	8,944	$	6,449
6.5% Senior Notes	—		162
6% Senior Notes	7,500		6,000
Amortization of discount and deferred debt issuance costs	757		770
Commitment fees and other	477		354
Total interest incurred	17,678		13,735
Less capitalized interest	97		196
Net interest expense	$	17,581	$	13,539
Cash paid for interest	$	16,599	$	26,517

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Significant Customers (Tables)

3 Months Ended

Mar. 31, 2018

Risks and Uncertainties [Abstract]

Schedules of Concentration of Risk, by Risk Factor

The following table presents the percentage of total revenues generated by each of these customers:

	Three Months Ended March 31,
	2018		2017
HFC	79	%	84	%
Delek	5	%	8	%

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Partners' Equity (Tables)

3 Months Ended

Mar. 31, 2018

Partners' Capital [Abstract]

Schedule of Allocation of General Partner Interest in Net Income

The following table presents the allocation of the general partner interest in net income for the periods presented below:

	Three Months Ended March 31,
	2018		2017
	(In thousands)
General partner interest in net income	$	—	$	511
General partner incentive distribution	—		16,627
Total general partner interest in net income	$	—	$	17,138

For purposes of applying the two-class method, including the allocation of cash distributions in excess of earnings, net income per limited partner unit is computed as follows:

	Three Months Ended March 31,
	2018			2017
	(In thousands)
Net income attributable to the partners	$	46,168		$	25,563
Less: General partner’s distribution declared (including IDRs)	—			(17,775		)
Limited partner’s distribution declared on common units	(66,551		)	(39,632		)
Distributions in excess of net income attributable to the partners	$	(20,383	)	$	(31,844	)

Schedule of Distributions Made to Members or Limited Partners

The following table presents the allocation of our regular quarterly cash distributions to the general and limited partners for the periods in which they apply. Our distributions are declared subsequent to quarter end; therefore, the amounts presented do not reflect distributions paid during the periods presented below.

	Three Months Ended March 31,
	2018		2017
	(In thousands, except per unit data)
General partner interest in distribution	$	—	$	1,148
General partner incentive distribution	—		16,627
Total general partner distribution	—		17,775
Limited partner distribution	66,551		39,632
Total regular quarterly cash distribution	$	66,551	$	57,407
Cash distribution per unit applicable to limited partners	$	0.6550	$	0.6200

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Net Income per Limited Partner Unit (Tables)

3 Months Ended

Mar. 31, 2018

Net Income per Limited Partner Unit [Abstract]

Schedule of Allocation of General Partner Interest in Net Income [Table Text Block]

The following table presents the allocation of the general partner interest in net income for the periods presented below:

	Three Months Ended March 31,
	2018		2017
	(In thousands)
General partner interest in net income	$	—	$	511
General partner incentive distribution	—		16,627
Total general partner interest in net income	$	—	$	17,138

For purposes of applying the two-class method, including the allocation of cash distributions in excess of earnings, net income per limited partner unit is computed as follows:

	Three Months Ended March 31,
	2018			2017
	(In thousands)
Net income attributable to the partners	$	46,168		$	25,563
Less: General partner’s distribution declared (including IDRs)	—			(17,775		)
Limited partner’s distribution declared on common units	(66,551		)	(39,632		)
Distributions in excess of net income attributable to the partners	$	(20,383	)	$	(31,844	)

Earnings per Unit by Type of Partner [Table Text Block]

	General Partner (including IDRs)			Limited Partners’ Common Units			Total
	(In thousands, except per unit data)
Three Months Ended March 31, 2018
Net income attributable to the partners:
Distributions declared	$	—		$	66,551		$	66,551
Distributions in excess of net income attributable to the partners				(20,383		)	(20,383		)
Net income attributable to the partners	$	—		$	46,168		$	46,168
Weighted average limited partners' units outstanding				103,836
Limited partners' per unit interest in earnings - basic and diluted				$	0.44
Three Months Ended March 31, 2017
Net income attributable to the partners:
Distributions declared	$	17,775		$	39,632		$	57,407
Distributions in excess of net income attributable to the partners	(637		)	(31,207		)	(31,844		)
Net income attributable to the partners	$	17,138		$	8,425		$	25,563
Weighted average limited partners' units outstanding				63,113
Limited partners' per unit interest in earnings - basic and diluted				$	0.13

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Segments Segment disclosure (Tables)

3 Months Ended

Mar. 31, 2018

Segment Reporting Information [Line Items]

Segment Reporting Disclosure [Text Block]

Operating Segments

Although financial information is reviewed by our chief operating decision makers from a variety of perspectives, they view the business in two operating segments: pipelines and terminals, and refinery processing units. These operating segments adhere to the accounting polices used for our consolidated financial statements.

The pipelines and terminals segment has been aggregated as both pipeline and terminals (1) have similar economic characteristics,(2) similarly provide logistics services of transportation and storage of petroleum products, (3) similarly support the petroleum refining business, including distribution of its products, (4) have principally the same customers and (5) are subject to similar regulatory requirements.

We evaluate the performance of each segment based on its respective operating income. Certain general and administrative expenses and interest and financing costs are excluded from segment operating income as they are not directly attributable to a specific operating segment. Identifiable assets are those used by the segment, whereas other assets are principally equity method investments, cash, deposits and other assets that are not associated with a specific reportable operating segment.

	Three Months Ended March 31,
	2018			2017
Revenues:
Pipelines and terminals - affiliate	$	82,894		$	69,645
Pipelines and terminals - third-party	27,456			16,609
Refinery processing units - affiliate	18,534			19,380
Total segment revenues	$	128,884		$	105,634
Segment operating income:
Pipelines and terminals	$	60,213		$	46,485
Refinery processing units	7,327			7,883
Total segment operating income	67,540			54,368
Unallocated general and administrative expenses	(3,122		)	(2,634		)
Interest and financing costs, net	(17,066		)	(25,662		)
Equity in earnings of unconsolidated affiliates	1,279			1,840
Gain on sale of assets and other	86			73
Income before income taxes	$	48,717		$	27,985
Capital Expenditures:
Pipelines and terminals	$	12,612		$	8,129
Refinery processing units	—			136
Total capital expenditures	$	12,612		$	8,265

	March 31, 2018		December 31, 2017
	(in thousands)
Identifiable assets:
Pipelines and terminals (1)	$	1,711,880	$	1,728,074
Refinery processing units	324,570		328,585
Other	98,339		97,455
Total identifiable assets	$	2,134,789	$	2,154,114

(1) Includes goodwill of $268.2 million and $266.7 million as of March 31, 2018 and December 31, 2017, respectively.

Schedule of Segment Reporting Information, by Segment [Table Text Block]

We evaluate the performance of each segment based on its respective operating income. Certain general and administrative expenses and interest and financing costs are excluded from segment operating income as they are not directly attributable to a specific operating segment. Identifiable assets are those used by the segment, whereas other assets are principally equity method investments, cash, deposits and other assets that are not associated with a specific reportable operating segment.

	Three Months Ended March 31,
	2018			2017
Revenues:
Pipelines and terminals - affiliate	$	82,894		$	69,645
Pipelines and terminals - third-party	27,456			16,609
Refinery processing units - affiliate	18,534			19,380
Total segment revenues	$	128,884		$	105,634
Segment operating income:
Pipelines and terminals	$	60,213		$	46,485
Refinery processing units	7,327			7,883
Total segment operating income	67,540			54,368
Unallocated general and administrative expenses	(3,122		)	(2,634		)
Interest and financing costs, net	(17,066		)	(25,662		)
Equity in earnings of unconsolidated affiliates	1,279			1,840
Gain on sale of assets and other	86			73
Income before income taxes	$	48,717		$	27,985
Capital Expenditures:
Pipelines and terminals	$	12,612		$	8,129
Refinery processing units	—			136
Total capital expenditures	$	12,612		$	8,265

	March 31, 2018		December 31, 2017
	(in thousands)
Identifiable assets:
Pipelines and terminals (1)	$	1,711,880	$	1,728,074
Refinery processing units	324,570		328,585
Other	98,339		97,455
Total identifiable assets	$	2,134,789	$	2,154,114

(1) Includes goodwill of $268.2 million and $266.7 million as of March 31, 2018 and December 31, 2017, respectively.

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Supplemental Guarantor / Non-Guarantor Financial Information (Tables)

3 Months Ended

Mar. 31, 2018

Supplemental Guarantor / Non-Guarantor Financial Information [Abstract]

Condensed Consolidating Balance Sheet

Condensed Consolidating Balance Sheet

March 31, 2018	Parent		Guarantor Restricted Subsidiaries		Non-Guarantor Non-Restricted Subsidiaries		Eliminations			Consolidated
	(In thousands)
ASSETS
Current assets:
Cash and cash equivalents	$	2	$	1,485	$	7,078	$	—		$	8,565
Accounts receivable	—		51,428		4,935		(198		)	56,165
Prepaid and other current assets	226		2,427		355		—			3,008
Total current assets	228		55,340		12,368		(198		)	67,738
Properties and equipment, net	—		1,204,672		356,382		—			1,561,054
Investment in subsidiaries	1,879,597		272,530		—		(2,152,127		)	—
Intangible assets, net	—		125,427		—		—			125,427
Goodwill	—		268,166		—		—			268,166
Equity method investments	—		84,678		—		—			84,678
Other assets	11,096		16,630		—		—			27,726
Total assets	$	1,890,921	$	2,027,443	$	368,750	$	(2,152,325	)	$	2,134,789
LIABILITIES AND EQUITY
Current liabilities:
Accounts payable	$	—	$	20,691	$	3,461	$	(198	)	$	23,954
Accrued interest	6,079		—		—		—			6,079
Deferred revenue	—		8,497		—		—			8,497
Accrued property taxes	—		4,423		1,713		—			6,136
Other current liabilities	226		7,376		—		—			7,602
Total current liabilities	6,305		40,987		5,174		(198		)	52,268
Long-term debt	1,390,952		—		—		—			1,390,952
Other long-term liabilities	260		15,249		202		—			15,711
Deferred revenue	—		47,740		—		—			47,740
Class B unit	—		43,870		—		—			43,870
Equity - partners	493,404		1,879,597		272,530		(2,152,127		)	493,404
Equity - noncontrolling interest	—		—		90,844		—			90,844
Total liabilities and equity	$	1,890,921	$	2,027,443	$	368,750	$	(2,152,325	)	$	2,134,789

Condensed Consolidating Balance Sheet

December 31, 2017	Parent		Guarantor Restricted Subsidiaries		Non-Guarantor Non-Restricted Subsidiaries		Eliminations			Consolidated
	(In thousands)
ASSETS
Current assets:
Cash and cash equivalents	$	2	$	511	$	7,263	$	—		$	7,776
Accounts receivable	—		59,448		5,038		(182		)	64,304
Prepaid and other current assets	13		2,016		282		—			2,311
Total current assets	15		61,975		12,583		(182		)	74,391
Properties and equipment, net	—		1,213,626		355,845		—			1,569,471
Investment in subsidiaries	1,902,285		273,319		—		(2,175,604		)	—
Intangible assets, net	—		129,463		—		—			129,463
Goodwill	—		266,716		—		—			266,716
Equity method investments	—		85,279		—		—			85,279
Other assets	11,753		17,041		—		—			28,794
Total assets	$	1,914,053	$	2,047,419	$	368,428	$	(2,175,786	)	$	2,154,114
LIABILITIES AND EQUITY
Current liabilities:
Accounts payable	$	—	$	20,928	$	1,526	$	(182	)	$	22,272
Accrued interest	12,500		756		—		—			13,256
Deferred revenue	—		8,540		1,058		—			9,598
Accrued property taxes	—		3,431		1,221		—			4,652
Other current liabilities	—		5,707		—		—			5,707
Total current liabilities	12,500		39,362		3,805		(182		)	55,485
Long-term debt	1,507,308		—		—		—			1,507,308
Other long-term liabilities	286		15,359		198		—			15,843
Deferred revenue	—		47,272		—		—			47,272
Class B unit	—		43,141		—		—			43,141
Equity - partners	393,959		1,902,285		273,319		(2,175,604		)	393,959
Equity - noncontrolling interest	—		—		91,106		—			91,106
Total liabilities and equity	$	1,914,053	$	2,047,419	$	368,428	$	(2,175,786	)	$	2,154,114

Condensed Consolidating Statement of Comprehensive Income

Condensed Consolidating Statement of Comprehensive Income

Three Months Ended March 31, 2018	Parent			Guarantor Restricted Subsidiaries			Non-Guarantor Non-restricted Subsidiaries			Eliminations			Consolidated
	(In thousands)
Revenues:
Affiliates	$	—		$	94,291		$	7,137		$	—		$	101,428
Third parties	—			19,978			7,478			—			27,456
	—			114,269			14,615			—			128,884
Operating costs and expenses:
Operations (exclusive of depreciation and amortization)	—			32,664			3,538			—			36,202
Depreciation and amortization				21,001			4,141			—			25,142
General and administrative	1,280			1,842			—			—			3,122
	1,280			55,507			7,679			—			64,466
Operating income (loss)	(1,280		)	58,762			6,936			—			64,418
Other income (expense):
Equity in earnings of subsidiaries	65,052			5,212			—			(70,264		)	—
Equity in earnings of equity method investments	—			1,279			—			—			1,279
Interest expense	(17,649		)	68			—			—			(17,581		)
Interest income	—			515			—			—			515
Gain on sale of assets and other	45			28			13			—			86
	47,448			7,102			13			(70,264		)	(15,701		)
Income before income taxes	46,168			65,864			6,949			(70,264		)	48,717
State income tax expense	—			(82		)	—			—			(82		)
Net income	46,168			65,782			6,949			(70,264		)	48,635
Allocation of net income attributable to noncontrolling interests	—			(730		)	(1,737		)	—			(2,467		)
Net income attributable to the partners	46,168			65,052			5,212			(70,264		)	46,168
Other comprehensive income	—			—			—			—			—
Comprehensive income attributable to the partners	$	46,168		$	65,052		$	5,212		$	(70,264	)	$	46,168

Condensed Consolidating Statement of Comprehensive Income

Three Months Ended March 31, 2017	Parent			Guarantor Restricted Subsidiaries			Non-Guarantor Non-Restricted Subsidiaries			Eliminations			Consolidated
	(In thousands)
Revenues:
Affiliates	$	—		$	80,776		$	8,249		$	—		$	89,025
Third parties	—			11,003			5,606			—			16,609
	—			91,779			13,855			—			105,634
Operating costs and expenses:
Operations (exclusive of depreciation and amortization)	—			29,092			3,397			—			32,489
Depreciation and amortization	—			14,853			3,924			—			18,777
General and administrative	1,155			1,479			—			—			2,634
	1,155			45,424			7,321			—			53,900
Operating income (loss)	(1,155		)	46,355			6,534			—			51,734
Other income (expense):
Equity in earnings of subsidiaries	45,283			4,901			—			(50,184		)	—
Equity in earnings of equity method investments	—			1,840			—			—			1,840
Interest expense	(6,340		)	(7,199		)	—			—			(13,539		)
Interest income	—			102			—			—			102
Loss on early extinguishment of debt	(12,225		)	—			—			—			(12,225		)
Gain on sale of assets and other	—			72			1			—			73
	26,718			(284		)	1			(50,184		)	(23,749		)
Income before income taxes	25,563			46,071			6,535			(50,184		)	27,985
State income tax expense	—			(106		)	—			—			(106		)
Net income	25,563			45,965			6,535			(50,184		)	27,879
Allocation of net income attributable to noncontrolling interests	—			(682		)	(1,634		)	—			(2,316		)
Net income attributable to the partners	25,563			45,283			4,901			(50,184		)	25,563
Other comprehensive income	63			63			—			(63		)	63
Comprehensive income attributable to the partners	$	25,626		$	45,346		$	4,901		$	(50,247	)	$	25,626

Condensed Consolidating Statement of Cash Flows

Condensed Consolidating Statement of Cash Flows

Three Months Ended March 31, 2018	Parent			Guarantor Restricted Subsidiaries			Non-Guarantor Non-Restricted Subsidiaries			Eliminations			Consolidated
	(In thousands)
Cash flows from operating activities	$	(23,679	)	$	98,013		$	11,398		$	(5,212	)	$	80,520
Cash flows from investing activities
Additions to properties and equipment	—			(9,029		)	(3,583		)	—			(12,612		)
Distributions from UNEV in excess of earnings	—			788			—			(788		)	—
Proceeds from sale of assets	—			22			—			—			22
Distributions in excess of equity in earnings of equity investments	—			358			—			—			358
	—			(7,861		)	(3,583		)	(788		)	(12,232		)
Cash flows from financing activities
Net repayments under credit agreement	(116,500		)	—			—			—			(116,500		)
Net intercompany financing activities	89,060			(89,060		)	—			—			—
Proceeds from issuance of common units	114,376			153			—			—			114,529
Contribution from general partner	297			—			—			—			297
Distributions to HEP unitholders	(63,496		)	—			—			—			(63,496		)
Distributions to noncontrolling interests	—			—			(8,000		)	6,000			(2,000		)
Units withheld for tax withholding obligations	(58		)	—			—			—			(58		)
Deferred financing cost	—			6			—			—			6
Other	—			(277		)	—			—			(277		)
	23,679			(89,178		)	(8,000		)	6,000			(67,499		)
Cash and cash equivalents
Increase (decrease) for the period	—			974			(185		)	—			789
Beginning of period	2			511			7,263			—			7,776
End of period	$	2		$	1,485		$	7,078		$	—		$	8,565

Condensed Consolidating Statement of Cash Flows

Three Months Ended March 31, 2017	Parent			Guarantor Restricted Subsidiaries			Non-Guarantor Non-Restricted Subsidiaries			Eliminations			Consolidated
	(In thousands)
Cash flows from operating activities	$	(20,262	)	$	58,062		$	10,736		$	(4,901	)	$	43,635
Cash flows from investing activities
Additions to properties and equipment	—			(7,902		)	(363		)	—			(8,265		)
Proceeds from sale of assets	—			424			—			—			424
Distributions from UNEV in excess of earnings	—			1,099			—			(1,099		)	—
Distributions in excess of equity in earnings of equity investments	—			3,016			—			—			3,016
	—			(3,363		)	(363		)	(1,099		)	(4,825		)
Cash flows from financing activities
Net borrowings under credit agreement	—			294,000			—			—			294,000
Net intercompany financing activities	344,781			(344,781		)	—			—			—
Redemption of senior notes	(309,750		)	—			—			—			(309,750		)
Proceeds from issuance of common units	39,371			(1,808		)	—			—			37,563
Distributions to HEP unitholders	(54,807		)	2			—			—			(54,805		)
Distributions to noncontrolling interests	—			—			(8,000		)	6,000			(2,000		)
Distribution to HFC for El Dorado tanks	(103		)	—			—			—			(103		)
Contributions from general partner	805			(805		)	—			—			—
Units withheld for tax withholding obligations	(35		)	—			—			—			(35		)
Other	—			(330		)	—			—			(330		)
	20,262			(53,722		)	(8,000		)	6,000			(35,460		)
Cash and cash equivalents
Decrease for the period	—			977			2,373			—			3,350
Beginning of period	2			301			3,354			—			3,657
End of period	$	2		$	1,278		$	5,727		$	—		$	7,007

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Description of Business and Presentation of Financial Statements (Details) - USD ($) $ / shares in Units, $ in Thousands	1 Months Ended	3 Months Ended
	Oct. 31, 2017	Mar. 31, 2018	Mar. 31, 2017	Dec. 31, 2017
Other Ownership Interests [Line Items]
Ownership percentage, controlling interest		57.00%
General partner interest	2.00%
Common Unit, Issued	37,250,000
Limited partner distribution	$ 2,500	$ 66,551	$ 39,632
Partners' Capital Account, Units, Sold in Private Placement		3,700,000
Sale of Stock, Price Per Share		$ 29.73
Proceeds from Issuance of Private Placement		$ 110,000
New Accounting Pronouncement or Change in Accounting Principle, Effect of Adoption, Quantification		$ 1,320
SLC Pipeline [Member]
Other Ownership Interests [Line Items]
Equity Method Investment, Ownership Percentage				75.00%
UNEV Pipeline [Member]
Other Ownership Interests [Line Items]
Equity Method Investment, Ownership Percentage		75.00%
Frontier Pipeline [Member]
Other Ownership Interests [Line Items]
Equity Method Investment, Ownership Percentage		50.00%		50.00%

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Acquisitions (Details) - USD ($) $ in Thousands	3 Months Ended
	Dec. 31, 2017	Mar. 31, 2018	Oct. 31, 2017
Business Acquisition [Line Items]
Step Acquisition, Equity Interest in Acquiree	$ 112,000
Step Acquisition - Remeasurement Gain	36,300
Consideration Transferred	$ 363,800
Business Acquisition Purchase Price			$ 250,000
Working Capital Adjustment		$ 1,800
Assets Acquired - Cash and Equivalents			4,609
Assets Acquired - Receivables			4,919
Assets Acquired - Prepaid and other Current Assets			253
Assets Acquired - Properties and Equipment			277,016
Assets Acquired - Intangible Assets			70,182
Goodwill			11,615
Liabilities Assumed - Accounts Payable			(3,311)
Liabilities Assumed - Accrued Property Taxes			(1,438)
Liabilities Assumed - Other Current Liabilities			(65)
Net Assets Acquired			$ 363,780
SLC Pipeline [Member]
Business Acquisition [Line Items]
Equity Method Investment, Ownership Percentage	75.00%
Frontier Pipeline [Member]
Business Acquisition [Line Items]
Equity Method Investment, Ownership Percentage	50.00%	50.00%

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Revenues - Schedule of Cumulative Effect of Adjustment (Details) - USD ($) $ in Thousands	Mar. 31, 2018	Jan. 01, 2018	Dec. 31, 2017
Revenue, Initial Application Period Cumulative Effect Transition [Line Items]
Deferred revenue	$ 8,497	$ 8,278	$ 9,598
Partners’ equity: Common unitholders	$ 493,404	395,279	393,959
Prior to Adoption
Revenue, Initial Application Period Cumulative Effect Transition [Line Items]
Deferred revenue			9,598
Partners’ equity: Common unitholders			$ 393,959
Increase (Decrease) | Accounting Standards Update 2014-09
Revenue, Initial Application Period Cumulative Effect Transition [Line Items]
Deferred revenue		(1,320)
Partners’ equity: Common unitholders		$ 1,320

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Revenues - Narrative (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2018	Dec. 31, 2017
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Operating Lease, Lease Income	$ 71,000
Recognition of Deferred Revenue	3,600
Deferred revenue, recognized	2,200
Deferred Revenue, Period Increase (Decrease)	2,500
Deferred revenue	47,740	$ 47,272
Sales Revenue, Services, Other	$ 57,900

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Revenues - Narrative, Remaining Performance Obligation (Details) $ in Millions	Mar. 31, 2018 USD ($)
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2018-04-01
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Unfulfilled performance obligations	$ 284
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2019-01-01
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Unfulfilled performance obligations	350
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2020-01-01
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Unfulfilled performance obligations	300
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2021-01-01
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Unfulfilled performance obligations	293
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2022-01-01
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Unfulfilled performance obligations	267
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2023-01-01
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Unfulfilled performance obligations	1,004
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: (nil)
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Unfulfilled performance obligations	$ 2,498

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Revenues - Schedule of Future Performance Obligations (Details) $ in Millions	3 Months Ended
	Mar. 31, 2018 USD ($)
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2018-04-01
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Unfulfilled performance obligations	$ 284
Unfulfilled performance obligations, expected timing	9 months
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2019-01-01
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Unfulfilled performance obligations	$ 350
Unfulfilled performance obligations, expected timing	1 year
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2020-01-01
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Unfulfilled performance obligations	$ 300
Unfulfilled performance obligations, expected timing	1 year
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2021-01-01
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Unfulfilled performance obligations	$ 293
Unfulfilled performance obligations, expected timing	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]
Unfulfilled performance obligations	$ 267
Unfulfilled performance obligations, expected timing	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]
Unfulfilled performance obligations	$ 2,498
Unfulfilled performance obligations, expected timing

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Revenues - Schedule of Contract Asset and Liability Balances (Details) - USD ($) $ in Thousands	Mar. 31, 2018	Jan. 01, 2018
Revenue from Contract with Customer [Abstract]
Contract asset	$ 1,711	$ 0
Contract liability	$ (2,479)	$ (2,713)

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Revenues - Schedule of Disaggregated Revenue (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2018	Mar. 31, 2017
Disaggregation of Revenue [Line Items]
Disaggregated Revenue	$ 128,884	$ 105,634
Pipelines
Disaggregation of Revenue [Line Items]
Disaggregated Revenue	72,169	52,447
Terminals, tanks and loading racks
Disaggregation of Revenue [Line Items]
Disaggregated Revenue	38,181	33,807
Refinery processing units
Disaggregation of Revenue [Line Items]
Disaggregated Revenue	$ 18,534	$ 19,380

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Financial Instruments (Narrative) (Details) - USD ($) $ in Thousands	Mar. 31, 2018	Dec. 31, 2017
Debt Instrument [Line Items]
Senior Notes	$ 100,000
6% Senior notes [Member]
Debt Instrument [Line Items]
Senior Notes	495,452	$ 495,308
Carrying Value [Member]
Debt Instrument [Line Items]
Financial Liabilities Fair Value Disclosure	495,452	495,308
Carrying Value [Member] | 6% Senior notes [Member]
Debt Instrument [Line Items]
Financial Liabilities Fair Value Disclosure		495,308
Fair Value [Member] | Fair value inputs, Level 2 [Member]
Debt Instrument [Line Items]
Financial Liabilities Fair Value Disclosure	511,740	525,120
Fair Value [Member] | 6% Senior notes [Member] | Fair value inputs, Level 2 [Member]
Debt Instrument [Line Items]
Financial Liabilities Fair Value Disclosure	$ 511,740	$ 525,120

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Properties and Equipment (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2018	Mar. 31, 2017	Dec. 31, 2017
Property, Plant and Equipment [Line Items]
Properties and equipment, gross	$ 2,035,723		$ 2,023,232
Less accumulated depreciation	474,669		453,761
Properties and equipment, net	1,561,054		1,569,471
Interest costs, capitalized during period	(97)	$ (196)
Depreciation expense	20,900	$ 16,900
Pipelines, terminals and tankage
Property, Plant and Equipment [Line Items]
Properties and equipment, gross	1,541,596		1,541,722
Refinery Assets
Property, Plant and Equipment [Line Items]
Properties and equipment, gross	347,338		347,338
Land and right of way
Property, Plant and Equipment [Line Items]
Properties and equipment, gross	86,445		86,484
Construction in progress
Property, Plant and Equipment [Line Items]
Properties and equipment, gross	24,134		12,029
Other
Property, Plant and Equipment [Line Items]
Properties and equipment, gross	$ 36,210		$ 35,659

XML

Intangible Assets (Details) - USD ($) $ in Thousands	3 Months Ended		12 Months Ended
	Mar. 31, 2018	Mar. 31, 2017	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2017
Finite-Lived Intangible Assets [Line Items]
Amortization of Intangible Assets	$ 4,000	$ 1,700
Finite-Lived Intangible Assets, Net [Abstract]
Intangible assets, gross	204,396							$ 204,396
Less accumulated amortization	78,969							74,933
Intangible assets, net	125,427							129,463
Delek transportation agreement
Finite-Lived Intangible Assets, Net [Abstract]
Intangible assets, gross	59,933							59,933
HFC transportation agreement
Finite-Lived Intangible Assets, Net [Abstract]
Intangible assets, gross	75,131							75,131
Customer relationships
Finite-Lived Intangible Assets, Net [Abstract]
Intangible assets, gross	69,282							69,282
Other
Finite-Lived Intangible Assets, Net [Abstract]
Intangible assets, gross	$ 50							$ 50
Subsequent Event [Member]
Finite-Lived Intangible Assets [Line Items]
Amortization of Intangible Assets			$ 9,800	$ 14,000,000	$ 14,000,000	$ 14,000,000	$ 14,000

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Employees, Retirement and Incentive Plans Retirement and Benefit Plan Costs (Details) $ in Millions	3 Months Ended
	Mar. 31, 2018 USD ($) Components shares	Mar. 31, 2017 USD ($)
Share-based Compensation Arrangements
Employee benefits and share-based compensation | $	$ 1.8	$ 1.7
Long-term Incentive Plan, Components | Components	4
Compensation costs of incentive awards | $	$ 0.8	$ 0.3
Deferred Bonus [Member]
Share-based Compensation Arrangements
Units authorized under equity-based compensation plans (new) | shares	2,500,000
Number of units available for grant | shares	1,323,089

XML

Employees, Retirement and Incentive Plans Restricted Units (Details) - USD ($) $ / shares in Units, $ in Millions	3 Months Ended
	Mar. 31, 2018	Dec. 31, 2017
Restricted and Phantom Units
Share-based Compensation Arrangements
Nonvested restricted units outstanding	131,899	119,009
Weighted average grant date fair value	$ 34.33	$ 34.77
Granted	12,890
Weighted Average Grant Date Fair Value	$ 30.23
Total unrecognized compensation related to nonvested units	$ 2.3
Weighted average remaining contractual term (years)	1 year 4 months
Performance Shares [Member]
Share-based Compensation Arrangements
Nonvested restricted units outstanding	35,392	36,911
Granted	2,764
Total unrecognized compensation related to nonvested units	$ 0.8
Weighted average remaining contractual term (years)	1 year 9 months
Minimum [Member] | Restricted Stock [Member]
Share-based Compensation Arrangements
Award Vesting Period	1 year
Maximum [Member] | Restricted Stock [Member]
Share-based Compensation Arrangements
Award Vesting Period	3 years

XML

Employees, Retirement and Incentive Plans Performance Units (Details) $ in Millions	3 Months Ended
	Mar. 31, 2018 USD ($) shares
Share-based Compensation Arrangement Instruments [Roll Forward]
Weighted Average Fair Value of Units Outstanding | $	$ 1.2
Performance Shares [Member]
Share-based Compensation Arrangements
Estimated Share Payouts Unit Awards Minimum	100.00%
Estimated Share Payouts Unit Awards Maximum	150.00%
Share-based Compensation Arrangement Instruments [Roll Forward]
Outstanding at January 1, 2018 (nonvested)	36,911
Granted	2,764
Vesting and transfer of common units to recipients	(4,283)
Outstanding at March 31, 2018 (nonvested)	35,392
Fair value of vested units transferred to recipients | $	$ 0.1
Total unrecognized compensation related to nonvested units | $	$ 0.8
Weighted average remaining contractual term (years)	1 year 9 months
Restricted and Phantom Units
Share-based Compensation Arrangement Instruments [Roll Forward]
Outstanding at January 1, 2018 (nonvested)	119,009
Granted	12,890
Outstanding at March 31, 2018 (nonvested)	131,899
Total unrecognized compensation related to nonvested units | $	$ 2.3
Weighted average remaining contractual term (years)	1 year 4 months
Executive Officer [Member] | Performance Shares [Member]
Share-based Compensation Arrangements
Estimated Share Payouts Unit Awards Minimum	50.00%
Estimated Share Payouts Unit Awards Maximum	150.00%

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Debt Senior Notes (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2018	Mar. 31, 2017	Dec. 31, 2017	Jun. 30, 2017
Debt Instrument [Line Items]
Line of Credit Facility, Maximum Borrowing Capacity	$ 1,400,000
Line of Credit Facility, Expiration Date	Jul. 01, 2022
Line of Credit Facility, Capacity Available for Trade Purchases	$ 50,000
Line of Credit Facility, Accordion Feature	300,000
Senior Notes	100,000
Loss on early extinguishment of debt	$ 0	$ (12,225)
6.5% Senior Notes [Member]
Debt Instrument [Line Items]
Principal		$ 300,000
Stated interest rate, senior notes	6.50%	6.50%
Senior Notes Aggregate Redemption Amount		$ 309,800
Loss on early extinguishment of debt		12,200
Unamortized Premium		9,800
Unamortized Discount		$ 2,400
6% Senior notes [Member]
Debt Instrument [Line Items]
Principal	$ 500,000		$ 500,000	$ 400,000
Senior Notes	$ 495,452		$ 495,308
Stated interest rate, senior notes	6.00%

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Debt Long-Term Debt (Details) - USD ($) $ in Thousands	Mar. 31, 2018	Dec. 31, 2017	Jun. 30, 2017	Mar. 31, 2017
Debt Instrument [Line Items]
Credit Agreement	$ 895,500	$ 1,012,000
Senior Notes	100,000
Total long-term debt	1,390,952	1,507,308
6% Senior notes [Member]
Debt Instrument [Line Items]
Principal	500,000	500,000	$ 400,000
Unamortized discount	(4,548)	(4,692)
Senior Notes	$ 495,452	$ 495,308
6.5% Senior Notes [Member]
Debt Instrument [Line Items]
Principal				$ 300,000

XML

Debt Interest Rate Risk Management (Details) - USD ($) $ in Thousands	Mar. 31, 2018	Dec. 31, 2017
Debt Instrument [Line Items]
Line of credit facility, amount outstanding	$ 895,500	$ 1,012,000
London Interbank Offered Rate (LIBOR) [Member] | Interest Rate Swap [Member] | Cash Flow Hedging [Member]
Debt Instrument [Line Items]
Line of credit facility, amount outstanding	$ 150,000	$ 0

XML

Debt Interest Expense and Other Debt Information (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2018	Mar. 31, 2017
Debt Instrument [Line Items]
Interest expense, debt	$ 17,678	$ 13,735
Less capitalized interest	97	196
Interest expense	17,581	13,539
Cash paid for interest	16,599	26,517
Revolving Credit Facility [Member]
Debt Instrument [Line Items]
Interest expense, debt	8,944	6,449
Senior Notes [Member] | 6.5% Senior Notes [Member]
Debt Instrument [Line Items]
Interest expense, debt	0	162
Senior Notes [Member] | 6% Senior notes [Member]
Debt Instrument [Line Items]
Interest expense, debt	7,500	6,000
Amortization discount and deferred debt issuance costs [Member]
Debt Instrument [Line Items]
Interest expense, debt	757	770
Commitment Fees and Other [Member]
Debt Instrument [Line Items]
Interest expense, debt	$ 477	$ 354

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Debt Debt Capital Leases (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2018	Dec. 31, 2017
Capital Leased Assets [Line Items]
Capital Lease Obligations	$ 2.2	$ 1.9
Capital Leased Assets, Gross	5.7	5.1
Capital Leases Accumulated Depreciation	$ 3.5	$ 3.3
Minimum [Member]
Capital Leased Assets [Line Items]
Capital Leases, Term of Contract	33 months
Maximum [Member]
Capital Leased Assets [Line Items]
Capital Leases, Term of Contract	48 months

XML

Significant Customers (Details) - Sales Revenue, Net [Member] - Customers	3 Months Ended
	Mar. 31, 2018	Mar. 31, 2017
Revenue, Major Customer [Line Items]
Concentration risk, percentage of total sales	84.10%
Concentration risk, number of significant customers	2
HFC [Member]
Revenue, Major Customer [Line Items]
Concentration risk, percentage of total sales	79.00%	84.00%
Delek [Member]
Revenue, Major Customer [Line Items]
Concentration risk, percentage of total sales	5.00%	8.00%

XML

Related Party Transactions (Narrative) (Details) - USD ($) $ in Thousands	1 Months Ended	3 Months Ended
	Oct. 31, 2017	Mar. 31, 2018	Dec. 31, 2017	Mar. 31, 2017
Related Party Transaction [Line Items]
Administrative Fee, Related Party		$ 2,500
Revenue from related parties		101,428		$ 89,025
Omnibus Agreement G & A Expenses, Related Party		600
Employee expenses reimbursed to related party		12,700		11,400
Reimbursements received from related parties		1,200		1,300
Accounts receivable due from HFC		41,600	$ 51,500
Accounts payable to HFC		10,741	7,725
Shortfall Payments, Revenue Recognized		2,200
Operating Lease, Lease Income		500		100
General partner interest	2.00%
Common Unit, Issued	37,250,000
Limited partner distribution	$ 2,500	66,551		39,632
Affiliated Entity
Related Party Transaction [Line Items]
Minimum annualized payments		332,700
Distributions to HEP unitholders		36,300		$ 30,300
Shortfall Payments
Related Party Transaction [Line Items]
Shortfall Billings Deferred Revenue		$ 900	$ 4,400

XML

Partners' Equity, Issuances (Details) $ / shares in Units, $ in Millions	3 Months Ended	23 Months Ended
	Mar. 31, 2018 USD ($) $ / shares shares	Mar. 31, 2018 USD ($) $ / shares shares
Capital Unit [Line Items]
Common units held by HFC | shares	59,630,030	59,630,030
Proceeds from Issuance of Private Placement | $	$ 110.0
Ownership percentage, controlling interest	57.00%	57.00%
Common Unit Issuance Program | $	$ 200.0
Gross Proceeds from Issuance of Common Units | $		$ 81.7
Partners' Capital Account, Units, Sold in Private Placement | shares	3,700,000
Sale of Stock, Price Per Share | $ / shares	$ 29.73	$ 29.73
Partners' Capital Account, Units, Sale of Units | shares		2,394,076

XML

Partners' Equity, Allocations of Net Income (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2018	Mar. 31, 2017
Partners' Capital [Abstract]
General Partner Interest in Net Income	$ 0	$ 511
General partner incentive distribution	0	16,627
Net income (Loss) Allocated to Partners After Predecessor Portion	$ 0	$ 17,138

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Partners' Equity, Cash Distributions (Details) - USD ($) $ / shares in Units, $ in Thousands		1 Months Ended	3 Months Ended
	Apr. 19, 2018	Oct. 31, 2017	Jun. 30, 2018	Mar. 31, 2018	Mar. 31, 2017
Distribution Payments [Line Items]
Limited partner distribution		$ 2,500		$ 66,551	$ 39,632
Partner Distributions
General partner interest				0	1,148
General partner incentive distribution				0	16,627
Total general partner distribution				0	17,775
Limited partner distribution		$ 2,500		66,551	39,632
Total regular quarterly cash distributions				$ 66,551	$ 57,407
Cash distribution per unit applicable to limited partners				$ 0.6550	$ 0.6200
Subsequent Event [Member]
Distribution Payments [Line Items]
Dividends Payable, Date Declared	Apr. 19, 2018
Partners' Capital, Distribution Amount Per Share	$ 0.6550
Dividends Payable, Date to be Paid			May 10, 2018
Dividends Payable, Date of Record			Apr. 30, 2018
Limited partner distribution			$ 2,500
Partner Distributions
Limited partner distribution			$ 2,500

XML

Net Income per Limited Partner Unit (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	1 Months Ended	3 Months Ended
	Oct. 31, 2017	Mar. 31, 2018	Mar. 31, 2017
Earnings per Unit by Type of Partner [Line Items]
Net income attributable to the partners		$ 46,168	$ 25,563
General Partners' Distribution Declared		0	(17,775)
Limited partner distribution declared	$ (2,500)	(66,551)	(39,632)
Distributions in Excess of Net Income Attributable to Partnership		(20,383)	(31,844)
Net Income Attributable to Partnership		46,168	25,563
Total Partner Interest in Net Income		$ 66,551	$ 57,407
Weighted average limited partners’ units outstanding		103,836	63,113
Limited partners’ per unit interest in earnings—basic and diluted:		$ 0.44	$ 0.13
General Partner [Member]
Earnings per Unit by Type of Partner [Line Items]
Distributions in Excess of Net Income Attributable to Partnership			$ (637)
Net Income Attributable to Partnership		0	17,138
Limited Partner [Member]
Earnings per Unit by Type of Partner [Line Items]
Distributions in Excess of Net Income Attributable to Partnership		(20,383)	(31,207)
Net Income Attributable to Partnership		$ 46,168	$ 8,425

XML

Environmental Environmental (Details) - USD ($)	3 Months Ended
	Mar. 31, 2018	Mar. 31, 2017	Dec. 31, 2017
Loss Contingencies [Line Items]
Environmental Remediation Expense	$ 0	$ 0
Accrued Environmental Expense	6,400,000		$ 6,500,000
Accrued Environmental Expense, Noncurrent	4,900,000		5,000,000
Affiliated Entity
Loss Contingencies [Line Items]
Accrued Environmental Expense	$ 700,000		$ 800,000

XML

Segments (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2018	Mar. 31, 2017	Dec. 31, 2017
Segment Reporting Information [Line Items]
Revenue, Net	$ 128,884	$ 105,634
Operating Income (Loss)	64,418	51,734
Segment operating profit	67,540	54,368
Unallocated general and administrative	(3,122)	(2,634)
Interest and financing costs, net	(17,066)	(25,662)
Equity in earnings of unconsolidated affiliates	1,279	1,840
Gain on sale of assets and other	86	73
Income before income taxes	48,717	27,985
Property, Plant and Equipment, Additions	12,612	8,265
Assets	2,134,789		$ 2,154,114
Goodwill	268,166		266,716
Pipelines and terminal - affiliate
Segment Reporting Information [Line Items]
Revenue, Net	82,894	69,645
Pipelines and terminals - third party
Segment Reporting Information [Line Items]
Revenue, Net	27,456	16,609
Operating Income (Loss)	60,213	46,485
Property, Plant and Equipment, Additions	12,612	8,129
Assets	1,711,880		1,728,074
Refinery processing units
Segment Reporting Information [Line Items]
Revenue, Net	18,534	19,380
Operating Income (Loss)	7,327	7,883
Property, Plant and Equipment, Additions	0	$ 136
Assets	324,570		328,585
Other
Segment Reporting Information [Line Items]
Assets	$ 98,339		$ 97,455

XML

Supplemental Guarantor / Non-Guarantor Financial Information Condensed Consolidated Balance Sheet (Details) - USD ($) $ in Thousands	Mar. 31, 2018	Jan. 01, 2018	Dec. 31, 2017	Mar. 31, 2017	Dec. 31, 2016
Current assets:
Cash and cash equivalents	$ 8,565		$ 7,776	$ 7,007	$ 3,657
Accounts receivable	56,165		64,304
Prepaid and other current assets	3,008		2,311
Total current assets	67,738		74,391
Properties and equipment, net	1,561,054		1,569,471
Investment in subsidiaries	0		0
Intangible assets, net	125,427		129,463
Goodwill	268,166		266,716
Equity method investments	84,678		85,279
Other assets	27,726		28,794
Assets	2,134,789		2,154,114
Current liabilities:
Accounts payable	23,954		22,272
Accrued interest	6,079		13,256
Deferred revenue	8,497	$ 8,278	9,598
Accrued property taxes	6,136		4,652
Other current liabilities	7,602		5,707
Total current liabilities	52,268		55,485
Long-term debt	1,390,952		1,507,308
Other long-term liabilities	15,711		15,843
Deferred revenue	47,740		47,272
Class B unit	43,870		43,141
Equity - partners	493,404		393,959
Equity - noncontrolling interest	90,844		91,106
Total liabilities and equity	2,134,789		2,154,114
Parent Company [Member]
Current assets:
Cash and cash equivalents	2		2	2	2
Accounts receivable	0		0
Prepaid and other current assets	226		13
Total current assets	228		15
Properties and equipment, net	0		0
Investment in subsidiaries	1,879,597		1,902,285
Intangible assets, net	0		0
Goodwill	0		0
Equity method investments	0		0
Other assets	11,096		11,753
Assets	1,890,921		1,914,053
Current liabilities:
Accounts payable	0		0
Accrued interest	6,079		12,500
Deferred revenue	0		0
Accrued property taxes	0		0
Other current liabilities	226		0
Total current liabilities	6,305		12,500
Long-term debt	1,390,952		1,507,308
Other long-term liabilities	260		286
Deferred revenue	0		0
Class B unit	0		0
Equity - partners	493,404		393,959
Equity - noncontrolling interest	0		0
Total liabilities and equity	1,890,921		1,914,053
Guarantor Subsidiaries [Member]
Current assets:
Cash and cash equivalents	1,485		511	1,278	301
Accounts receivable	51,428		59,448
Prepaid and other current assets	2,427		2,016
Total current assets	55,340		61,975
Properties and equipment, net	1,204,672		1,213,626
Investment in subsidiaries	272,530		273,319
Intangible assets, net	125,427		129,463
Goodwill	268,166		266,716
Equity method investments	84,678		85,279
Other assets	16,630		17,041
Assets	2,027,443		2,047,419
Current liabilities:
Accounts payable	20,691		20,928
Accrued interest	0		756
Deferred revenue	8,497		8,540
Accrued property taxes	4,423		3,431
Other current liabilities	7,376		5,707
Total current liabilities	40,987		39,362
Long-term debt	0		0
Other long-term liabilities	15,249		15,359
Deferred revenue	47,740		47,272
Class B unit	43,870		43,141
Equity - partners	1,879,597		1,902,285
Equity - noncontrolling interest	0		0
Total liabilities and equity	2,027,443		2,047,419
Non-Guarantor Subsidiaries [Member]
Current assets:
Cash and cash equivalents	7,078		7,263	5,727	3,354
Accounts receivable	4,935		5,038
Prepaid and other current assets	355		282
Total current assets	12,368		12,583
Properties and equipment, net	356,382		355,845
Investment in subsidiaries	0		0
Intangible assets, net	0		0
Goodwill	0		0
Equity method investments	0		0
Other assets	0		0
Assets	368,750		368,428
Current liabilities:
Accounts payable	3,461		1,526
Accrued interest	0		0
Deferred revenue	0		1,058
Accrued property taxes	1,713		1,221
Other current liabilities	0		0
Total current liabilities	5,174		3,805
Long-term debt	0		0
Other long-term liabilities	202		198
Deferred revenue	0		0
Class B unit	0		0
Equity - partners	272,530		273,319
Equity - noncontrolling interest	90,844		91,106
Total liabilities and equity	368,750		368,428
Consolidation, Eliminations [Member]
Current assets:
Cash and cash equivalents	0		0	$ 0	$ 0
Accounts receivable	(198)		(182)
Prepaid and other current assets	0		0
Total current assets	(198)		(182)
Properties and equipment, net	0		0
Investment in subsidiaries	(2,152,127)		(2,175,604)
Intangible assets, net	0		0
Goodwill	0		0
Equity method investments	0		0
Other assets	0		0
Assets	(2,152,325)		(2,175,786)
Current liabilities:
Accounts payable	(198)		(182)
Accrued interest	0		0
Deferred revenue	0		0
Accrued property taxes	0		0
Other current liabilities	0		0
Total current liabilities	(198)		(182)
Long-term debt	0		0
Other long-term liabilities	0		0
Deferred revenue	0		0
Class B unit	0		0
Equity - partners	(2,152,127)		(2,175,604)
Equity - noncontrolling interest	0		0
Total liabilities and equity	$ (2,152,325)		$ (2,175,786)

XML

Supplemental Guarantor / Non-Guarantor Financial Information Condensed Consolidating Statement of Comprehensive Income (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2018	Mar. 31, 2017
Revenues [Abstract]
Affiliates	$ 101,428	$ 89,025
Third parties	27,456	16,609
Total revenues	128,884	105,634
Operating costs and expenses [Abstract]
Operations (exclusive of depreciation and amortization)	36,202	32,489
Depreciation and amortization	25,142	18,777
General and administrative	3,122	2,634
Total operating costs and expenses	64,466	53,900
Operating Income (Loss)	64,418	51,734
Equity in earnings of subsidiaries	0	0
Equity in earnings of equity method investments	1,279	1,840
Interest expense	(17,581)	(13,539)
Interest income	515	102
Loss on early extinguishment of debt	0	(12,225)
Gain on sale of assets and other	86	73
Nonoperating Income (Expense)	(15,701)	(23,749)
Income before income taxes	48,717	27,985
State income tax benefit (expense)	(82)	(106)
Net income	48,635	27,879
Allocation of net income attributable to noncontrolling interests	(2,467)	(2,316)
Net income attributable to the partners	46,168	25,563
Other comprehensive income	0	63
Comprehensive income attributable to the partners	46,168	25,626
Parent Company [Member]
Revenues [Abstract]
Affiliates	0	0
Third parties	0	0
Total revenues	0	0
Operating costs and expenses [Abstract]
Operations (exclusive of depreciation and amortization)	0	0
Depreciation and amortization		0
General and administrative	1,280	1,155
Total operating costs and expenses	1,280	1,155
Operating Income (Loss)	(1,280)	(1,155)
Equity in earnings of subsidiaries	65,052	45,283
Equity in earnings of equity method investments	0	0
Interest expense	(17,649)	(6,340)
Interest income	0	0
Loss on early extinguishment of debt		(12,225)
Gain on sale of assets and other	45	0
Nonoperating Income (Expense)	47,448	26,718
Income before income taxes	46,168	25,563
State income tax benefit (expense)	0	0
Net income	46,168	25,563
Allocation of net income attributable to noncontrolling interests	0	0
Net income attributable to the partners	46,168	25,563
Other comprehensive income	0	63
Comprehensive income attributable to the partners	46,168	25,626
Guarantor Subsidiaries [Member]
Revenues [Abstract]
Affiliates	94,291	80,776
Third parties	19,978	11,003
Total revenues	114,269	91,779
Operating costs and expenses [Abstract]
Operations (exclusive of depreciation and amortization)	32,664	29,092
Depreciation and amortization	21,001	14,853
General and administrative	1,842	1,479
Total operating costs and expenses	55,507	45,424
Operating Income (Loss)	58,762	46,355
Equity in earnings of subsidiaries	5,212	4,901
Equity in earnings of equity method investments	1,279	1,840
Interest expense	68	(7,199)
Interest income	515	102
Loss on early extinguishment of debt		0
Gain on sale of assets and other	28	72
Nonoperating Income (Expense)	7,102	(284)
Income before income taxes	65,864	46,071
State income tax benefit (expense)	(82)	(106)
Net income	65,782	45,965
Allocation of net income attributable to noncontrolling interests	(730)	(682)
Net income attributable to the partners	65,052	45,283
Other comprehensive income	0	63
Comprehensive income attributable to the partners	65,052	45,346
Non-Guarantor Subsidiaries [Member]
Revenues [Abstract]
Affiliates	7,137	8,249
Third parties	7,478	5,606
Total revenues	14,615	13,855
Operating costs and expenses [Abstract]
Operations (exclusive of depreciation and amortization)	3,538	3,397
Depreciation and amortization	4,141	3,924
General and administrative	0	0
Total operating costs and expenses	7,679	7,321
Operating Income (Loss)	6,936	6,534
Equity in earnings of subsidiaries	0	0
Equity in earnings of equity method investments	0	0
Interest expense	0	0
Interest income	0	0
Loss on early extinguishment of debt		0
Gain on sale of assets and other	13	1
Nonoperating Income (Expense)	13	1
Income before income taxes	6,949	6,535
State income tax benefit (expense)	0	0
Net income	6,949	6,535
Allocation of net income attributable to noncontrolling interests	(1,737)	(1,634)
Net income attributable to the partners	5,212	4,901
Other comprehensive income	0	0
Comprehensive income attributable to the partners	5,212	4,901
Consolidation, Eliminations [Member]
Revenues [Abstract]
Affiliates	0	0
Third parties	0	0
Total revenues	0	0
Operating costs and expenses [Abstract]
Operations (exclusive of depreciation and amortization)	0	0
Depreciation and amortization	0	0
General and administrative	0	0
Total operating costs and expenses	0	0
Operating Income (Loss)	0	0
Equity in earnings of subsidiaries	(70,264)	(50,184)
Equity in earnings of equity method investments	0	0
Interest expense	0	0
Interest income	0	0
Loss on early extinguishment of debt		0
Gain on sale of assets and other	0	0
Nonoperating Income (Expense)	(70,264)	(50,184)
Income before income taxes	(70,264)	(50,184)
State income tax benefit (expense)	0	0
Net income	(70,264)	(50,184)
Allocation of net income attributable to noncontrolling interests	0	0
Net income attributable to the partners	(70,264)	(50,184)
Other comprehensive income	0	(63)
Comprehensive income attributable to the partners	$ (70,264)	$ (50,247)

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Supplemental Guarantor / Non-Guarantor Financial Information Condensed Consolidating Statement of Cash Flows (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2018	Mar. 31, 2017
Condensed Financial Statements, Captions [Line Items]
Net cash provided by operating activities	$ 80,520	$ 43,635
Cash flows from investing activities
Additions to properties and equipment	(12,612)	(8,265)
Distributions from UNEV in excess of earnings	0
Proceeds from sale of assets	22	424
Proceeds from Noncontrolling Interests		0
Distributions in excess of equity in earnings of equity investments	358	3,016
Net cash used for investing activities	(12,232)	(4,825)
Cash flows from financing activities
Net borrowings (repayments) under credit agreement	(116,500)	294,000
Net intercompany financing activities	0	0
Proceeds from Issuance of common units	114,529	37,563
Redemption of 6.5% Senior Notes	0	(309,750)
Distributions to HEP unitholders	(63,496)	(54,805)
Contributions from general partner	297	0
Distribution to HFC for El Dorado tanks		(103)
Distributions to noncontrolling interests	(2,000)	(2,000)
Units withheld for tax withholding obligations	(58)	(35)
Deferred financing costs	(6)	0
Other	(277)	(330)
Net cash used by financing activities	(67,499)	(35,460)
Increase (decrease) for the period	789	3,350
Beginning of period	7,776	3,657
End of period	8,565	7,007
Parent Company [Member]
Condensed Financial Statements, Captions [Line Items]
Net cash provided by operating activities	(23,679)	(20,262)
Cash flows from investing activities
Additions to properties and equipment	0	0
Distributions from UNEV in excess of earnings	0
Proceeds from sale of assets	0	0
Proceeds from Noncontrolling Interests		0
Distributions in excess of equity in earnings of equity investments	0	0
Net cash used for investing activities	0	0
Cash flows from financing activities
Net borrowings (repayments) under credit agreement	(116,500)	0
Net intercompany financing activities	89,060	344,781
Proceeds from Issuance of common units	114,376	39,371
Redemption of 6.5% Senior Notes		(309,750)
Distributions to HEP unitholders	(63,496)	(54,807)
Contributions from general partner	297	805
Distribution to HFC for El Dorado tanks		(103)
Distributions to noncontrolling interests	0	0
Units withheld for tax withholding obligations	(58)	(35)
Deferred financing costs	0
Other	0	0
Net cash used by financing activities	23,679	20,262
Increase (decrease) for the period	0	0
Beginning of period	2	2
End of period	2	2
Guarantor Subsidiaries [Member]
Condensed Financial Statements, Captions [Line Items]
Net cash provided by operating activities	98,013	58,062
Cash flows from investing activities
Additions to properties and equipment	(9,029)	(7,902)
Distributions from UNEV in excess of earnings	788
Proceeds from sale of assets	22	424
Proceeds from Noncontrolling Interests		1,099
Distributions in excess of equity in earnings of equity investments	358	3,016
Net cash used for investing activities	(7,861)	(3,363)
Cash flows from financing activities
Net borrowings (repayments) under credit agreement	0	294,000
Net intercompany financing activities	(89,060)	(344,781)
Proceeds from Issuance of common units	(153)	(1,808)
Redemption of 6.5% Senior Notes		0
Distributions to HEP unitholders	0	(2)
Contributions from general partner	0	(805)
Distribution to HFC for El Dorado tanks		0
Distributions to noncontrolling interests	0	0
Units withheld for tax withholding obligations	0	0
Deferred financing costs	6
Other	277	330
Net cash used by financing activities	(89,178)	(53,722)
Increase (decrease) for the period	974	977
Beginning of period	511	301
End of period	1,485	1,278
Non-Guarantor Subsidiaries [Member]
Condensed Financial Statements, Captions [Line Items]
Net cash provided by operating activities	11,398	10,736
Cash flows from investing activities
Additions to properties and equipment	(3,583)	(363)
Distributions from UNEV in excess of earnings	0
Proceeds from sale of assets	0	0
Proceeds from Noncontrolling Interests		0
Distributions in excess of equity in earnings of equity investments	0	0
Net cash used for investing activities	(3,583)	(363)
Cash flows from financing activities
Net borrowings (repayments) under credit agreement	0	0
Net intercompany financing activities	0	0
Proceeds from Issuance of common units	0	0
Redemption of 6.5% Senior Notes		0
Distributions to HEP unitholders	0	0
Contributions from general partner	0	0
Distribution to HFC for El Dorado tanks		0
Distributions to noncontrolling interests	(8,000)	(8,000)
Units withheld for tax withholding obligations	0	0
Deferred financing costs	0
Other	0	0
Net cash used by financing activities	(8,000)	(8,000)
Increase (decrease) for the period	(185)	2,373
Beginning of period	7,263	3,354
End of period	7,078	5,727
Consolidation, Eliminations [Member]
Condensed Financial Statements, Captions [Line Items]
Net cash provided by operating activities	(5,212)	(4,901)
Cash flows from investing activities
Additions to properties and equipment	0	0
Distributions from UNEV in excess of earnings	(788)
Proceeds from sale of assets	0	0
Proceeds from Noncontrolling Interests		(1,099)
Distributions in excess of equity in earnings of equity investments	0	0
Net cash used for investing activities	(788)	(1,099)
Cash flows from financing activities
Net borrowings (repayments) under credit agreement	0	0
Net intercompany financing activities	0	0
Proceeds from Issuance of common units	0	0
Redemption of 6.5% Senior Notes		0
Distributions to HEP unitholders	0	0
Contributions from general partner	0	0
Distribution to HFC for El Dorado tanks		0
Distributions to noncontrolling interests	6,000	6,000
Units withheld for tax withholding obligations	0	0
Deferred financing costs	0
Other	0	0
Net cash used by financing activities	6,000	6,000
Increase (decrease) for the period	0	0
Beginning of period	0	0
End of period	$ 0	$ 0