Zenith Energy Logistics Partners (ARCX) 10-Q 6 Aug 15 2015 Q2 Quarterly report Financial data

Document and Entity Information

Document and Entity Information - shares	6 Months Ended
	Jun. 30, 2015	Aug. 03, 2015
Document And Entity Information [Line Items]
Document Type	10-Q
Amendment Flag	false
Document Period End Date	Jun. 30, 2015
Document Fiscal Year Focus	2,015
Document Fiscal Period Focus	Q2
Trading Symbol	ARCX
Entity Registrant Name	Arc Logistics Partners LP
Entity Central Index Key	1,583,744
Current Fiscal Year End Date	--12-31
Entity Filer Category	Accelerated Filer
Common Units [Member]
Document And Entity Information [Line Items]
Entity Common Stock, Shares Outstanding		13,167,744
Subordinated Units [Member]
Document And Entity Information [Line Items]
Entity Common Stock, Shares Outstanding		6,081,081

Condensed Consolidated Balance

Condensed Consolidated Balance Sheets (Unaudited) - USD ($) $ in Thousands	Jun. 30, 2015	Dec. 31, 2014
Current assets:
Cash and cash equivalents	$ 9,960	$ 6,599
Trade accounts receivable	6,760	3,746
Due from related parties	1,250	900
Inventories	298	285
Other current assets	1,253	1,226
Total current assets	19,521	12,756
Property, plant and equipment, net	351,788	195,886
Investment in unconsolidated affiliate	73,997	72,858
Intangible assets, net	83,968	33,189
Goodwill	39,871	15,162
Other assets	4,241	1,737
Total assets	573,386	331,588
Current liabilities:
Accounts payable	2,971	2,136
Accrued expenses	2,678	2,133
Due to general partner	1,658	409
Other liabilities	1,417	34
Total current liabilities	8,724	4,712
Credit facility	176,063	111,063
Other non-current liabilities	$ 21,211	$ 2,747
Commitments and contingencies
Partners’ capital:
General partner interest	$ 0	$ 0
Limited partners’ interest
Non-controlling interests	87,605
Accumulated other comprehensive (loss) income	717	348
Total partners’ capital	367,388	213,066
Total liabilities and partners’ capital	573,386	331,588
Common Units [Member]
Limited partners’ interest
Limited partners' units	189,597	119,130
Subordinated Units [Member]
Limited partners’ interest
Limited partners' units	$ 89,469	$ 93,588

Condensed Consolidated Balance3

Condensed Consolidated Balance Sheets (Unaudited) (Parenthetical) - shares	Jun. 30, 2015	Dec. 31, 2014
Common Units [Member]
Limited partners' units issued	11,388,745	6,867,950
Limited partners' units outstanding	11,388,745	6,867,950
Subordinated Units [Member]
Limited partners' units issued	6,081,081	6,081,081
Limited partners' units outstanding	6,081,081	6,081,081

Condensed Consolidated Statemen

Condensed Consolidated Statements of Operations and Comprehensive Income (Unaudited) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2015	Jun. 30, 2014	Jun. 30, 2015	Jun. 30, 2014
Revenues:
Third-party customers	$ 16,996	$ 12,673	$ 28,375	$ 23,548
Related parties	2,114	2,054	4,292	4,392
Revenues	19,110	14,727	32,667	27,940
Expenses:
Operating expenses	7,012	7,342	13,292	14,473
Selling, general and administrative	4,399	2,030	8,697	3,807
Selling, general and administrative – affiliate	1,086	1,056	2,162	1,940
Depreciation	2,619	1,761	4,462	3,459
Amortization	2,131	1,353	3,376	2,692
Total expenses	17,247	13,542	31,989	26,371
Operating (loss) income	1,863	1,185	678	1,569
Other income (expense):
Equity earnings from unconsolidated affiliate	2,503	2,487	4,992	4,924
Other income	2	3	7	3
Interest expense	(1,518)	(930)	(2,469)	(1,841)
Total other income, net	987	1,560	2,530	3,086
Income before income taxes	2,850	2,745	3,208	4,655
Income taxes	17	3	69	52
Net income	2,833	2,742	3,139	4,603
Net income attributable to non-controlling interests	(645)		(645)
Net income attributable to partners' capital	2,188	2,742	2,494	4,603
Other comprehensive loss	840	(353)	369	(440)
Comprehensive (loss) income attributable to partners’ capital	$ 3,028	$ 2,389	$ 2,863	$ 4,163
Common Units [Member]
Earnings per limited partner unit:
Earnings per limited partner unit, basic and diluted	$ 0.20	$ 0.21	$ 0.23	$ 0.36
Subordinated Units [Member]
Earnings per limited partner unit:
Earnings per limited partner unit, basic and diluted	$ 0.02	$ 0.21	$ 0.02	$ 0.36

Condensed Consolidated Stateme5

Condensed Consolidated Statements of Cash Flows (Unaudited) - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2015	Jun. 30, 2014
Cash flow from operating activities:
Net income	$ 3,139	$ 4,603
Adjustments to reconcile net income to net cash provided by (used in) operating activities:
Depreciation	4,462	3,459
Amortization	3,376	2,692
Equity earnings from unconsolidated affiliate, net of distributions	(615)	(330)
Amortization of deferred financing costs	375	246
Unit-based compensation	2,842
Changes in operating assets and liabilities:
Trade accounts receivable	(2,646)	391
Due from related parties	(718)	(103)
Inventories	(13)	48
Other current assets	(26)	(784)
Accounts payable	469	885
Accrued expenses	544	74
Due to general partner	1,250	339
Other liabilities	148	2,055
Net cash provided by operating activities	12,587	13,575
Cash flows from investing activities:
Capital expenditures	(3,007)	(5,711)
Investment in unconsolidated affiliate	(310)	(681)
Net cash paid for acquisitions	(216,000)
Net cash used in investing activities	(219,317)	(6,392)
Cash flows from financing activities:
Distributions	(10,618)	(7,691)
Deferred financing costs	(2,881)	(230)
Proceeds from equity offering, net	72,081
Equity contribution from non-controlling interests	86,960
Repayments to credit facility		(25,000)
Proceeds from credit facility	65,000	27,500
Distribution equivalent rights paid on unissued units	(451)
Net cash used in financing activities	210,091	(5,421)
Net increase (decrease) in cash and cash equivalents	3,361	1,762
Cash and cash equivalents, beginning of period	6,599	4,454
Cash and cash equivalents, end of period	9,960	6,216
Supplemental disclosure of cash flow information:
Cash paid for interest	2,226	1,714
Cash paid for income taxes	69	52
Non-cash investing and financing activities:
Increase (decrease) in purchases of property plant and equipment in accounts payable and accrued expenses	366	$ (601)
Business acquisition purchase consideration - earn-out liability	$ 19,700

Condensed Consolidated Stateme6

Condensed Consolidated Statements of Partners' Capital (Unaudited) - 6 months ended Jun. 30, 2015 - USD ($) $ in Thousands	Total	Limited Partner Common Interest [Member]	Limited Partner Subordinated Interest [Member]	Non-controlling Interests [Member]	Accumulated Other Comprehensive Income [Member]
Partners' capital, beginning balance at Dec. 31, 2014	$ 213,066	$ 119,130	$ 93,588		$ 348
Net income	3,139	1,627	867	$ 645
Other comprehensive income	369				369
Unit-based compensation	2,842	2,842
Contributions	86,960			86,960
Distribution equivalent rights paid on unissued units	(451)	(451)
Issuance of common units, net of offering costs	72,081	72,081
Distributions	(10,618)	(5,632)	(4,986)
Partners' capital, ending balance at Jun. 30, 2015	$ 367,388	$ 189,597	$ 89,469	$ 87,605	$ 717

Organization and Presentation

Organization and Presentation	6 Months Ended
	Jun. 30, 2015
Organization Consolidation And Presentation Of Financial Statements [Abstract]
Organization and Presentation	Note 1—Organization and Presentation Defined Terms Unless the context clearly indicates otherwise, references in these unaudited condensed consolidated financial statements (“interim statements”) to “Arc Logistics” or the “Partnership” refer to Arc Logistics Partners LP and its subsidiaries. Unless the context clearly indicates otherwise, references to our “General Partner” refer to Arc Logistics GP LLC, the general partner of Arc Logistics. References to “Sponsor” or “Lightfoot” refer to Lightfoot Capital Partners, LP and its general partner, Lightfoot Capital Partners GP LLC. References to “GCAC” refer to Gulf Coast Asphalt Company, L.L.C., which contributed its preferred units in Arc Terminals LP, predecessor to Arc Logistics (“Arc Terminals”), to the Partnership upon the consummation of the Partnership’s initial public offering in November 2013 (“IPO”). References to “Center Oil” refer to GP&W, Inc., d.b.a. Center Oil, and affiliates, including Center Terminal Company-Cleveland, which contributed its limited partner interests in Arc Terminals to the Partnership upon the consummation of the IPO. References to “Gulf LNG Holdings” refer to Gulf LNG Holdings Group, LLC and its subsidiaries, which own a liquefied natural gas regasification and storage facility in Pascagoula, MS, which is referred to herein as the “LNG Facility.” The Partnership owns a 10.3% limited liability company interest in Gulf LNG Holdings, which is referred to herein as the “LNG Interest.” Organization The Partnership is a fee-based, growth-oriented Delaware limited partnership formed by Lightfoot in 2007 to own, operate, develop and acquire a diversified portfolio of complementary energy logistics assets. The Partnership is principally engaged in the terminalling, storage, throughput and transloading of crude oil and petroleum products. The Partnership is focused on growing its business through the optimization, organic development and acquisition of terminalling, storage, rail, pipeline and other energy logistics assets that generate stable cash flows. In November 2013, the Partnership completed its IPO by selling 6,786,869 common units (which includes 786,869 common units issued pursuant to the exercise of the underwriters’ over-allotment option) representing limited partner interests in the Partnership at a price to the public of $19.00 per common unit. Our common units are listed on the New York Stock Exchange under the symbol “ARCX.” In May 2015, the Partnership sold 4,520,795 common units at a price of $16.59 per unit in a private placement as part of the acquisition of Joliet Bulk, Barge & Rail LLC (“JBBR”; and such acquisition, the “JBBR Acquisition”). The Partnership, through Arc Terminals Joliet Holdings LLC (“Joliet Holdings”), a joint venture company owned 60% by the Partnership and 40% by EFS Midstream Holdings LLC (an affiliate of GE Energy Financial Services (“GE EFS”)), acquired all of the membership interests of JBBR from CenterPoint Properties Trust (“CenterPoint”). Refer to “Note 3 – Acquisitions” for further discussion on the JBBR Acquisition. As of June 30, 2015, our Sponsor owned 68,617 common units and 5,146,264 subordinated units representing a 29.9% limited partner interest in us. Our Sponsor also owns and controls our General Partner, which maintains a non-economic general partner interest in us and owns the incentive distribution rights.

Summary of Significant Accounti

Summary of Significant Accounting Policies	6 Months Ended
	Jun. 30, 2015
Accounting Policies [Abstract]
Summary of Significant Accounting Policies	Note 2—Summary of Significant Accounting Policies The Partnership has provided a discussion of significant accounting policies in its Annual Report on Form 10-K for the year ended December 31, 2014 (the “2014 Partnership 10-K”). Certain items from that discussion are repeated or updated below as necessary to assist in the understanding of these interim statements. Basis of Presentation The accompanying interim statements of the Partnership have been prepared in accordance with GAAP for interim financial information and with the instructions to Form 10-Q and Article 10 of Regulation S-X issued by the SEC. Accordingly, they do not include all of the information and footnotes required by GAAP for complete financial statements. In the opinion of management, all adjustments, consisting only of normal recurring adjustments and disclosures necessary for a fair statement of these interim statements have been included. The results reported in these interim statements are not necessarily indicative of the results that may be reported for the entire year or for any other period. These interim statements should be read in conjunction with the Partnership’s consolidated financial statements for the year ended December 31, 2014, which are included in the 2014 Partnership 10-K, as filed with the SEC. The year-end balance sheet data was derived from the audited financial statements, but does not include all disclosures required by GAAP. Use of Estimates The preparation of financial statements in conformity with GAAP requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities and disclosure of contingent assets and liabilities at the date of the financial statements. The most significant estimates relate to the valuation of acquired businesses, goodwill and intangible assets, assessment for impairment of long-lived assets and the useful lives of intangible assets and property, plant and equipment. Actual results could differ from those estimates. Impairment of Long-Lived Assets Long-lived assets are reviewed for impairment whenever events or changes in circumstances indicate that the carrying amount of an asset may not be recoverable. Recoverability of assets to be held and used is measured by a comparison of the carrying amount of an asset to the estimated undiscounted future cash flows expected to be generated by the asset. If the carrying amount of an asset exceeds its estimated future cash flows, an impairment charge is recognized for the amount by which the carrying amount of the asset exceeds the estimated fair value of the asset. Assets to be disposed of are separately presented in the balance sheet and reported at the lower of the carrying amount or fair value less costs to sell and are no longer depreciated. No impairment charges were recorded during the six months ended June 30, 2015. Refer to “Note 5—Property, Plant and Equipment” for discussion on impairments recorded during the year ended December 31, 2014. Goodwill Goodwill represents the excess of consideration paid over the fair value of net assets acquired in a business combination. Goodwill is not amortized but instead is assessed for impairment at least annually or when facts and circumstances warrant. The Partnership determined at December 31, 2014 that there were no impairment charges and subsequent to that date no event indicating an impairment has occurred. A summary of the changes in the carrying amount of goodwill is as follows (in thousands): As of June 30, December 31, 2015 2014 Beginning Balance $ 15,162 $ 15,162 Goodwill acquired 24,709 - Impairment - - Ending Balance $ 39,871 $ 15,162 Refer to “Note 3—Acquisitions – JBBR Acquisition” for discussion on the goodwill recorded in the second quarter of 2015 in connection with the JBBR Acquisition. Deferred Rent The Lease Agreement (as defined in “Note 11—Related Party Transactions—Other Transactions with Related Persons—Operating Lease Agreement” Revenue Recognition Revenues from leased tank storage and delivery services are recognized as the services are performed, evidence of a contractual arrangement exists and collectability is reasonably assured. Revenues also include the sale of excess products and additives which are mixed with customer-owned liquid products. Revenues for the sale of excess products and additives are recognized when title and risk of loss passes to the customer. Fair Value of Financial Instruments Fair value is defined as the price that would be received to sell an asset or paid to transfer a liability in an orderly transaction between market participants at a specified measurement date. Fair value measurements are derived using inputs and assumptions that market participants would use in pricing an asset or liability, including assumptions about risk. GAAP establishes a valuation hierarchy for disclosure of the inputs to valuation used to measure fair value. This three-tier hierarchy classifies fair value amounts recognized or disclosed in the condensed consolidated financial statements based on the observability of inputs used to estimate such fair values. The classification within the hierarchy of a financial asset or liability is determined based on the lowest level input that is significant to the fair value measurement. The hierarchy considers fair value amounts based on observable inputs (Level 1 and 2) to be more reliable and predictable than those based primarily on unobservable inputs (Level 3). At each balance sheet reporting date, the Partnership categorizes its financial assets and liabilities using this hierarchy. The amounts reported in the balance sheet for cash equivalents, accounts receivable, accounts payable and accrued liabilities approximate their fair value because of the short-term maturities of these instruments (Level 1). Because the Credit Facility (as defined in “Note 7 – Debt – Credit Facility” below) has a market rate of interest, its carrying amount approximated fair value (Level 2). In connection with the JBBR Acquisition, Joliet Holdings has an earn-out obligation to CenterPoint which was valued at the time of the JBBR Acquisition, in connection with the purchase price allocation, at approximately $19.7 million. Refer to “Note 3—Acquisitions – JBBR Acquisition” for further discussion on the JBBR Acquisition. Joliet Holdings’ earn-out obligations to CenterPoint will terminate upon the payment, in the aggregate, of $27.0 million. Since the fair value of the contingent consideration obligation is based primarily upon unobservable inputs it is classified as Level 3 in the fair value hierarchy. The contingent consideration obligation, incurred in connection with the JBBR Acquisition, will be revalued at each reporting period and changes to the fair value will be recorded into “Other income (expense)”. Increases or decreases in the fair value of the contingent consideration obligations can result from changes in the assumed timing of revenue and expense estimates. Significant judgement is employed in determining the appropriateness of these assumptions as of the acquisition date and for each subsequent reporting period. Accordingly, future business and economic conditions, can materially impact the amount of contingent consideration expense we record in any given period. No revalue adjustments were necessary during the three and six months ended June 30, 2015. As of June 30, 2015, the Joliet Holdings has incurred $0.2 million related to the earn-out obligation. The Partnership believes that its valuation methods are appropriate and consistent with the values that would be determined by other market participants. However, the use of different methodologies or assumptions to determine fair value of certain financial instruments could result in a different estimate of fair value at the reporting date. Unit-Based Compensation The Partnership recognizes all unit-based compensation to directors, officers, employees and other service providers in the consolidated financial statements based on the fair value of the awards. Fair value for unit-based awards classified as equity awards is determined on the grant date of the award, and this value is recognized as compensation expense ratably over the requisite service or performance period of the equity award. Fair value for equity awards is calculated at the closing price of the common units on the grant date. Fair value for unit-based awards classified as liability awards is calculated at the closing price of the common units on the grant date and is remeasured at each reporting period until the award is settled. Compensation expense related to unit-based awards is included in the “Selling, general and administrative” line item in the accompanying unaudited condensed consolidated statements of operations and comprehensive income. For awards with performance conditions, the expense is accrued over the service period only if the performance condition is considered to be probable of occurring. When awards with performance conditions that were previously considered improbable become probable, the Partnership incurs additional expense in the period that the probability assessment changes (see “Note 9—Equity Plans”). Net Income Per Unit The Partnership uses the two-class method in the computation of earnings per unit since there is more than one participating class of securities. Earnings per common and subordinated unit are determined by dividing net income allocated to the common units and subordinated units, respectively, after deducting the amount allocated to the phantom units, if any, by the weighted average number of outstanding common and subordinated units, respectively, during the period. The overall computation, presentation and disclosure of the Partnership’s limited partners’ net income per unit are made in accordance with the Financial Accounting Standards Board (“FASB”) Accounting Standards Codification (“ASC”) Topic 260 “Earnings per Share.” Segment Reporting The Partnership derives revenue from operating its terminal and transloading facilities. These facilities have been aggregated into one reportable segment because the facilities have similar long-term economic characteristics, products and types of customers. Noncontrolling Interests The Partnership applies the provisions of ASC 810 Consolidations Recently Issued Accounting Pronouncements In May 2014, the FASB issued updated guidance on the reporting and disclosure of revenue recognition. The update requires that an entity recognize revenue to depict the transfer of goods or services to customers in an amount that reflects the consideration to which the entity expects to be entitled in exchange for those goods or services. This update also requires new qualitative and quantitative disclosures about the nature, amount, timing and uncertainty of revenue and cash flows arising from customer contracts, including significant judgments and changes in judgments, information about contract balances and performance obligations, and assets recognized from costs incurred to obtain or fulfill a contract. The Partnership is currently evaluating the potential impact of this authoritative guidance on its financial condition, results of operations, cash flows and related disclosures. In April 2015, the FASB proposed a one year deferral of the effective date, and therefore, this guidance will be effective for the Partnership beginning in the first quarter of 2018, with early adoption optional but not before the original effective date of December 15, 2016. In June 2014, the FASB issued new guidance related to stock compensation. The new standard requires that a performance target that affects vesting, and that could be achieved after the requisite service period, be treated as a performance condition. As such, the performance target should not be reflected in estimating the grant date fair value of the award. This update further clarifies that compensation cost should be recognized in the period in which it becomes probable that the performance target will be achieved and should represent the compensation cost attributable to the periods for which the requisite service has already been rendered. The Partnership does not expect this requirement to have a significant impact on its financial condition, results of operations, cash flows and related disclosures. This guidance will be effective for the Partnership beginning in the first quarter of 2016, with early adoption optional. In February 2015, the FASB issued new guidance related to evaluating entities for inclusion in consolidations for both the variable interest model and for the voting model for limited partnerships and similar entities. The update requires that all reporting entities reevaluate whether they should consolidate certain legal entities. The Partnership does not expect this requirement to have a significant impact on its financial condition, results of operations, cash flows and related disclosures. This guidance will be effective for the Partnership in the first quarter of 2016, with early adoption optional. In April 2015, the FASB issued new guidance related to presentation of debt issuance costs. The update requires debt issuance costs to be presented in the balance sheet as a direct deduction from the carrying value of the associated debt liability, consistent with the presentation of a debt discount. The Partnership is currently assessing the impact that adopting this new accounting guidance will have on its consolidated financial statements and disclosures. This guidance will be effective for the Partnership in the first quarter of 2016, with early adoption optional. In April 2015, the FASB issued new guidance related to the accounting for fees paid in a cloud computing arrangement. The standard clarifies the circumstances under which a cloud computing customer would account for the arrangement as a license of internal-use software under ASC 350-40. The Partnership does not expect this requirement to have a significant impact on its financial condition, results of operations, cash flows and related disclosures. This guidance will be effective for the Partnership in the first quarter of 2016, with early adoption optional. In April 2015, the FASB issued new guidance specifying that for purposes of calculating historical earnings per unit under the two-class method, the earnings (losses) of a transferred business before the date of a drop down transaction should be allocated entirely to the general partner. In that circumstance, the previously reported earnings per unit of the limited partners (which is typically the earnings per unit measure presented in the financial statements) would not change as a result of the drop down transaction. In addition, the standard requires additional qualitative disclosures about how the rights to the earnings (losses) differ before and after the drop down transaction occurs for purposes of computing earnings per unit under the two-class method. The new accounting guidance is effective for the Partnership beginning in the first quarter of 2016, and .

Acquisitions

Acquisitions	6 Months Ended
	Jun. 30, 2015
Business Combinations [Abstract]
Acquisitions	Note 3 – Acquisitions Acquisitions The following acquisitions were accounted for under the acquisition method of accounting whereby management utilized the services of third-party valuation consultants, along with estimates and assumptions provided by management, to estimate the fair value of the net assets acquired. The third-party valuation consultants utilized several appraisal methodologies including income, market and cost approaches to estimate the fair value of the identifiable assets acquired. JBBR Acquisition In May 2015, the Partnership and an affiliate of GE EFS, through Joliet Holdings, purchased all of the membership interests in JBBR from CenterPoint for a base cash purchase price of $216 million (“JBBR Purchase Price”). Joliet Holdings is also required to pay to CenterPoint earn-out payments for each barrel of crude oil that is either delivered to or received by the Joliet Terminal (as defined below) (without duplication) or for which JBBR receives payment under minimum volume commitments regardless of actual throughput activity. Joliet Holdings’ earn-out obligations to CenterPoint will terminate upon the payment, in the aggregate, of $27.0 million. JBBR among other things owns a petroleum products terminal and 4-mile crude oil pipeline located in Joliet, Illinois (“Joliet Terminal”). To finance the Partnership’s portion of the consideration payable by it in connection with the JBBR Acquisition, the Partnership sold 4,520,795 common units at a price of $16.59 per unit in a private placement for proceeds totaling $72.7 million after placement agent commissions and expenses. In addition, the Partnership borrowed $61.0 million under its Credit Facility to partially finance the balance of the purchase price payable by it at the closing of the JBBR Acquisition. Joliet Holdings is consolidated under the voting interest model in the Partnerships operating results. The GE EFS ownership interest in Joliet Holdings is presented separately as a noncontrolling interest. The JBBR Acquisition was accounted for as a business combination in accordance with ASC Topic 805, “Business Combinations” (“ASC 805”). In accordance with ASC 805, the Partnership recorded approximately $19.7 million of additional consideration related to Joliet Holdings’s earn-out payments as contingent consideration. The $19.7 million is recorded on the balance sheet of the Partnership as a liability and will be reduced by any future earn-out payments made to CenterPoint. This liability is subject to remeasurement each reporting period until the full amount of the earn-out has been satisfied. The JBBR Purchase Price exceeded the approximately $211.0 million fair value of the identifiable assets acquired and accordingly, the Partnership recognized goodwill of approximately $24.7 million. The Partnership believes the primary items that generated goodwill are the expected ability to grow the acquired business by leveraging its existing customer relationships and by attracting new customers based on the strategic location of the Joliet Terminal. Furthermore, the Partnership expects that the entire amount of its recorded goodwill will be deductible for tax purposes. Transaction costs incurred by the Partnership in connection with the acquisition, consisting primarily of legal and other professional fees, totaled approximately $1.3 million and were expensed as incurred in accordance with ASC 805 and included in the “Selling, general and administrative” line item in the accompanying consolidated statement of operations and comprehensive income. The following table summarizes the consideration paid and the assets acquired at the JBBR Acquisition closing date (in thousands): Consideration: Cash paid to seller $ 216,000 Earn-out liability recognized 19,700 Total consideration $ 235,700 Allocation of purchase price: Property and equipment $ 156,991 Intangible assets 54,000 Goodwill 24,709 Net assets acquired $ 235,700 Since the JBBR Acquisition closing date in May 2015 through June 30, 2015, the acquired JBBR assets have earned approximately $4.4 million in revenue and $1.6 million of operating income. The unaudited pro forma results related to the JBBR Acquisition have been excluded as the Joliet Terminal was under construction prior to the consummation of the JBBR Acquisition and therefore there were no revenue-producing activities previously associated with the Joliet Terminal. The Joliet Terminal, post-acquisition, is now operating and has begun to generate revenue. In addition, the historical financial information for the Joliet Terminal prior to the acquisition is not indicative of how the Joliet Terminal is being operated since the JBBR Acquisition and would be of no comparative value in understanding the future operations of the Joliet Terminal.

Investment in Unconsolidated Af

Investment in Unconsolidated Affiliate	6 Months Ended
	Jun. 30, 2015
Equity Method Investments And Joint Ventures [Abstract]
Investment in Unconsolidated Affiliate	Note 4—Investment in Unconsolidated Affiliate The Partnership accounts for investments in limited liability companies under the equity method of accounting unless the Partnership’s interest is deemed to be so minor that it may have virtually no influence over operating and financial policies. “Investment in unconsolidated affiliate” consisted of the LNG Interest, and its balances as of June 30, 2015 and December 31, 2014 are represented below (in thousands): Balance at December 31, 2014 $ 72,858 Equity earnings 4,992 Contributions 310 Distributions (4,377 ) Amortization of premium (155 ) Other comprehensive income 369 Balance at June 30, 2015 $ 73,997 Gulf LNG Holdings Acquisition In November 2013, the Partnership purchased the LNG Interest from an affiliate of GE EFS for approximately $72.7 million. The carrying value of the LNG Interest on the date of acquisition was approximately $64.1 million with a purchase price of approximately $72.7 million and the excess paid over the carrying value of approximately $8.6 million. This excess can be attributed to the underlying long lived assets of Gulf LNG Holdings and is therefore being amortized using the straight line method over the remaining useful lives of the respective assets, which is 28 years. The estimated aggregate amortization of this premium for its remaining useful life from June 30, 2015 is as follows (in thousands): Total 2015 $ 154 2016 309 2017 309 2018 309 2019 309 Thereafter 6,753 $ 8,143 Summarized financial information for Gulf LNG Holdings is reported below (in thousands): June 30, December 31, 2015 2014 Balance sheets Current assets $ 7,576 $ 12,537 Noncurrent assets 905,324 918,334 Total assets $ 912,900 $ 930,871 Current liabilities $ 78,291 $ 85,818 Long-term liabilities 701,726 724,755 Member’s equity 132,883 120,298 Total liabilities and member’s equity $ 912,900 $ 930,871 Three Months Ended Six Months Ended June 30, June 30, 2015 2014 2015 2014 Income statements Revenues $ 46,625 $ 46,560 $ 93,249 $ 93,121 Total operating costs and expenses 14,283 14,151 28,489 28,431 Operating income 32,342 32,409 64,760 64,690 Net income $ 24,252 $ 24,147 $ 48,417 $ 47,803

Property, Plant and Equipment

Property, Plant and Equipment	6 Months Ended
	Jun. 30, 2015
Property Plant And Equipment [Abstract]
Property, Plant and Equipment	Note 5—Property, Plant and Equipment The Partnership’s property, plant and equipment consisted of (in thousands): As of June 30, December 31, 2015 2014 Land $ 74,745 $ 49,615 Buildings and site improvements 68,033 36,298 Tanks and trim 101,958 91,463 Pipelines 20,364 - Machinery and equipment 108,536 32,815 Office furniture and equipment 2,381 2,348 Construction in progress 3,061 6,175 379,078 218,714 Less: Accumulated depreciation (27,290 ) (22,828 ) Property, plant and equipment, net $ 351,788 $ 195,886 Due to a change in the operating logistics at the Partnership’s Chillicothe, IL terminal (the “Chillicothe Terminal”) in April 2013, the Partnership evaluated the long-lived assets at the Chillicothe Terminal for impairment as of December 31, 2013 and December 31, 2014. Based upon a market strategy to repurpose the Chillicothe Terminal, the Partnership’s estimate of undiscounted cash flows as of December 31, 2013 indicated that such carrying amounts were expected to be recovered. The Partnership re-evaluated the Chillicothe Terminal and based upon the inability to enter into a service agreement with a new or existing customer, the Partnership recognized a non-cash impairment loss of approximately $6.1 million as of December 31, 2014. The net impact of this impairment was reflected in “Long-lived asset impairment” in the consolidated statement of operations and comprehensive income for the year ended December 31, 2014.

Intangible Assets

Intangible Assets	6 Months Ended
	Jun. 30, 2015
Goodwill And Intangible Assets Disclosure [Abstract]
Intangible Assets	Note 6—Intangible Assets The Partnership’s intangible assets consisted of (in thousands): Estimated As of Useful Lives June 30, December 31, in Years 2015 2014 Customer relationships 21 $ 4,785 $ 4,785 Acquired contracts 2-12 93,900 39,900 Noncompete agreements 2-3 741 741 99,426 45,426 Less: Accumulated amortization (15,458 ) (12,237 ) Intangible assets, net $ 83,968 $ 33,189 The Partnership’s intangible assets are amortized on a straight-line basis over the expected life of each intangible asset. The estimated future amortization expense is approximately $5.2 million for the remainder of 2015, $10.1 million in 2016, $9.7 million in 2017, $8.5 million in 2018, $7.9 million in 2019 and $42.7 million thereafter.

Debt

Debt	6 Months Ended
	Jun. 30, 2015
Debt Disclosure [Abstract]
Debt	Note 7—Debt Credit Facility In November 2013, concurrent with the closing of the IPO, the Partnership entered into the Second Amended and Restated Revolving Credit Agreement (the “Credit Facility”) with a syndicate of lenders, under which Arc Terminals Holdings LLC, a wholly owned subsidiary of the Partnership (“Arc Terminals Holdings”) is the borrower. After several amendments, the Credit Facility currently has up to $275.0 million of borrowing capacity. As of June 30, 2015, the Partnership had borrowings of $176.1 million under the Credit Facility at an interest rate of 3.19%. During the first and second quarters of 2015, the Partnership had a $10 million letter of credit outstanding under its letter of credit sub-facility, which was issued in connection with the JBBR Acquisition. This letter of credit was extinguished when the JBBR Acquisition closed in May 2015. Based on the restrictions under the total leverage ratio covenant, as of June 30, 2015, the Partnership had $42.6 million of available capacity under the Credit Facility. The Credit Facility is available to fund working capital and to finance capital expenditures and other permitted payments and for other lawful corporate purposes and allows the Partnership to request that the maximum amount of the Credit Facility be increased by up to an aggregate principal amount of $100.0 million, subject to receiving increased commitments from lenders or commitments from other financial institutions. The Credit Facility is available for revolving loans, including a sublimit of $5.0 million for swing line loans and a sublimit of $20.0 million for letters of credit. The Partnership’s obligations under the Credit Facility are secured by a first priority lien on substantially all of the Partnership’s material assets (other than the LNG Interest and the assets owned by JBBR and its subsidiaries). The Partnership and each of the Partnership’s existing restricted subsidiaries (other than the borrower) guarantee, and each of the Partnership’s future restricted subsidiaries will also guarantee, the Credit Facility. The Credit Facility matures in November 2018. Loans under the Credit Facility bear interest at a floating rate, based upon the Partnership’s total leverage ratio, equal to, at the Partnership’s option, either (a) a base rate plus a range from 100 to 200 basis points per annum or (b) a LIBOR rate, plus a range of 200 to 300 basis points. The base rate is established as the highest of (i) the rate which SunTrust Bank announces, from time to time, as its prime lending rate, (ii) the daily one-month LIBOR plus 100 basis points per annum and (iii) the federal funds rate plus 50 basis points per annum. The unused portion of the Credit Facility is subject to a commitment fee calculated based upon the Partnership’s total leverage ratio ranging from 0.375% to 0.50% per annum. Upon any event of default, the interest rate will, upon the request of the lenders holding a majority of the commitments, be increased by 2.0% on overdue amounts per annum for the period during which the event of default exists. The Credit Facility contains certain customary representations and warranties, affirmative covenants, negative covenants and events of default. As of June 30, 2015, the Partnership was in compliance with such covenants. The negative covenants include restrictions on the Partnership’s ability to incur additional indebtedness, acquire and sell assets, create liens, enter into certain lease agreements, make investments and make distributions. The Credit Facility requires the Partnership to maintain a total leverage ratio of not more than 4.50 to 1.00, which may increase to up to 5.00 to 1.00 during specified periods following a material permitted acquisition or issuance of over $200.0 million of senior notes, and a minimum interest coverage ratio of not less than 2.50 to 1.00. If the Partnership issues over $200.0 million of senior notes, the Partnership will be subject to an additional financial covenant pursuant to which the Partnership’s secured leverage ratio must not be more than 3.50 to 1.00. The Credit Facility places certain restrictions on the issuance of senior notes. If an event of default occurs, the agent would be entitled to take various actions, including the acceleration of amounts due under the Credit Facility, termination of the commitments under the Credit Facility and all remedial actions available to a secured creditor. The events of default include customary events for a financing agreement of this type, including, without limitation, payment defaults, material inaccuracies of representations and warranties, defaults in the performance of affirmative or negative covenants (including financial covenants), bankruptcy or related defaults, defaults relating to judgments, nonpayment of other material indebtedness and the occurrence of a change in control. In connection with the Credit Facility, the Partnership and the Partnership’s subsidiaries have entered into certain customary ancillary agreements and arrangements, which, among other things, provide that the indebtedness, obligations and liabilities arising under or in connection with the Credit Facility are unconditionally guaranteed by the Partnership and each of the Partnership’s existing restricted subsidiaries (other than the borrower) and each of the Partnership’s future restricted subsidiaries. First Amendment In January 2014, Arc Terminals Holdings, as borrower, and Arc Logistics and its other subsidiaries, as guarantors, entered into the First amendment to the Credit Facility (the “First Amendment”). The First Amendment principally modified certain provisions of the Credit Facility to allow Arc Terminals Holdings to enter into the Lease Agreement relating to the use of petroleum products terminals and pipeline infrastructure located in Portland, Oregon (the “Portland Terminal”). Second Amendment In May 2015, our operating subsidiary, Arc Terminals Holdings, as borrower, together with Arc Logistics and certain of its other subsidiaries, as guarantors, entered into the Second Amendment to the Credit Facility (the “Second Amendment”) as part of its financing for the JBBR Acquisition. Upon the consummation of the JBBR Acquisition in May 2015, the aggregate commitments under the Credit Facility increased from $175 million to $275 million. In addition, the sublimit for letters of credit was increased from $10 million to $20 million.

Partners' Capital and Distribut

Partners' Capital and Distributions	6 Months Ended
	Jun. 30, 2015
Equity [Abstract]
Partners' Capital and Distributions	Note 8—Partners’ Capital and Distributions Cash Distributions The table below summarizes the quarterly distributions related to the Partnership’s quarterly financial results (in thousands, except per unit data): Total Quarterly Total Cash Date of Unitholders Quarter Ended Distribution Per Unit Distribution Distribution Record Date June 30, 2015 $ 0.4250 $ 8,181 August 14, 2015 August 10, 2015 March 31, 2015 $ 0.4100 $ 5,309 May 15, 2015 May 11, 2015 December 31, 2014 $ 0.4100 $ 5,309 February 17, 2015 February 9, 2015 September 30, 2014 $ 0.4100 $ 5,309 November 17, 2014 November 10, 2014 June 30, 2014 $ 0.4000 $ 5,180 August 18, 2014 August 11, 2014 Cash Distribution Policy The partnership agreement provides that the General Partner will make a determination no less frequently than each quarter as to whether to make a distribution, but the partnership agreement does not require the Partnership to pay distributions at any time or in any amount. Instead, the board of directors of the General Partner (the “Board”) has adopted a cash distribution policy that sets forth the General Partner’s intention with respect to the distributions to be made to unitholders. Pursuant to the cash distribution policy, within 60 days after the end of each quarter, the Partnership expects to distribute to the holders of common and subordinated units on a quarterly basis at least the minimum quarterly distribution of $0.3875 per unit, or $1.55 per unit on an annualized basis, to the extent the Partnership has sufficient cash after establishment of cash reserves and payment of fees and expenses, including payments to the General Partner and its affiliates. The Board may change the foregoing distribution policy at any time and from time to time, and even if the cash distribution policy is not modified or revoked, the amount of distributions paid under the policy and the decision to make any distribution is determined solely by the General Partner. As a result, there is no guarantee that the Partnership will pay the minimum quarterly distribution, or any distribution, on the units in any quarter. However, the partnership agreement contains provisions intended to motivate the General Partner to make steady, increasing and sustainable distributions over time. The partnership agreement generally provides that the Partnership will distribute cash each quarter in the following manner: — first , to the holders of common units, until each common unit has received the minimum quarterly distribution of $0.3875 plus any arrearages from prior quarters; — second , to the holders of subordinated units, until each subordinated unit has received the minimum quarterly distribution of $0.3875; and — third , to all unitholders pro rata, until each has received a distribution of $0.4456. If cash distributions to the Partnership’s unitholders exceed $0.4456 per unit in any quarter, the Partnership’s unitholders and the General Partner, as the initial holder of the incentive distribution rights, will receive distributions according to the following percentage allocations: Total Quarterly Distribution Per Unit Target Amount Marginal Percentage Unitholders General above $0.3875 up to $0.4456 100.0 % 0.0 % above $0.4456 up to $0.4844 85.0 % 15.0 % above $0.4844 up to $0.5813 75.0 % 25.0 % above $0.5813 50.0 % 50.0 % The Partnership refers to additional increasing distributions to the General Partner as “incentive distributions.” The principal difference between the Partnership’s common units and subordinated units is that in any quarter during the subordination period, holders of the subordinated units are not entitled to receive any distributions from operating surplus until the common units have received the minimum quarterly distribution for such quarter plus any arrearages in the payment of the minimum quarterly distribution from prior quarters. Subordinated units will not accrue arrearages. The subordination period will end on the first business day after the Partnership has earned and paid at least (1) $1.55 (the minimum quarterly distribution on an annualized basis) on each outstanding common unit and subordinated unit for each of three consecutive, non-overlapping four quarter periods ending on or after September 30, 2016 or (2) $2.325 (150.0% of the annualized minimum quarterly distribution) on each outstanding common unit and subordinated unit and the related distribution on the incentive distribution rights for a four-quarter period ending immediately preceding such date, in each case provided there are no arrearages on the Partnership’s common units at that time. The subordination period will also end upon the removal of the General Partner other than for cause if no subordinated units or common units held by holder(s) of subordinated units or their affiliates are voted in favor of that removal. When the subordination period ends, all subordinated units will convert into common units on a one-for-one basis, and all common units thereafter will no longer be entitled to arrearages.

Equity Plans

Equity Plans	6 Months Ended
	Jun. 30, 2015
Disclosure Of Compensation Related Costs Sharebased Payments [Abstract]
Disclosure of Compensation Related Costs, Share-based Payments	Note 9—Equity Plans 2013 Long-Term Incentive Plan The Board approved and adopted the Arc Logistics Long-Term Incentive Plan (the “2013 Plan”) in November 2013. In July 2014, the Board formed a Compensation Committee (the “Compensation Committee”) to administer the 2013 Plan. Effective as of March 2015, the Board dissolved the Compensation Committee and, on and after such date, the Board serves as the administrative committee (the “Committee”) under the 2013 Plan. Employees (including officers), consultants and directors of the General Partner, the Partnership and its affiliates (the “Partnership Entities”) are eligible to receive awards under the 2013 Plan. The 2013 Plan authorizes up to an aggregate of 2.0 million common units to be available for awards under the 2013 Plan, subject to adjustment as provided in the 2013 Plan. Awards available for grant under the 2013 Plan include, but are not limited to, restricted units, phantom units, unit options, and unit appreciation rights, but only phantom units have been granted under the 2013 Plan to date. Distribution equivalent rights (“DER”) are also available for grant under the 2013 Plan, either alone or in tandem with other specific awards, which entitle the recipient to receive an amount equal to distributions paid on an outstanding common unit. Upon the occurrence of a “change of control” or an award recipient’s termination of service due to death or “disability” (each quoted term, as defined in the 2013 Plan), any outstanding unvested award will vest in full. In July 2014, the Compensation Committee authorized the grant of an aggregate of 939,500 phantom units pursuant to the 2013 Plan to certain employees, consultants and non-employee directors of the Partnership Entities. Awards of phantom units are settled in common units, except that an award of less than 1,000 phantom units is settled in cash. If a phantom unit award recipient experiences a termination of service with the Partnership Entities other than (i) as a result of death or “disability” or (ii) due to certain circumstances in connection with a “change of control,” the Committee, at its sole discretion, may decide to vest all or any portion of the recipient’s unvested phantom units as of the date of such termination or may allow the unvested phantom units to remain outstanding and vest pursuant to the vesting schedule set forth in the applicable award agreement. Of the July 2014 awards, a total of 100,000 phantom units were granted to certain non-employee directors of the Board and are classified as equity awards for accounting purposes (the “Director Grants”). Each Director Grant will be settled in common units and includes a DER. The Director Grants have an aggregate grant date fair value of $2.5 million and vest in equal annual installments over a three-year period starting from the date of grant. For the three and six months ended June 30, 2015, the Partnership recorded approximately $0.2 million and $0.4 million, respectively, of unit-based compensation expense with respect to the Director Grants. As of June 30, 2015, the unrecognized unit-based compensation expense for the Director Grants is approximately $1.7 million, which will be recognized ratably over the remaining term of the awards. Of the July 2014 awards, a total of 832,000 phantom units were granted to employees and certain consultants of the Partnership Entities and are classified as equity awards for accounting purposes (the “Employee Equity Grants”). Each Employee Equity Grant will be settled in common units and includes a DER. The Employee Equity Grants have an aggregate grant date fair value of $21.2 million and vest as follows: (i) 25% of the Employee Equity Grants will vest the day after the end of the Subordination Period (as defined in the Partnership’s limited partnership agreement); and (ii) the three remaining 25% installments of the Employee Equity Grants will vest based on the date on which the Partnership has paid, for three consecutive quarters, distributions to its common and subordinated unitholders at or above a stated level, with (A) 25% of the award vesting after distributions are paid at or above $0.4457 per unit for the required period, (B) 25% of the award vesting after distributions are paid at or above $0.4845 per unit for the required period, and (C) the last 25% of the award vesting after distributions are paid at or above $0.5814 per unit for the required period. To the extent not previously vested, the Employee Equity Grants expire on the fifth anniversary of the date of grant, provided that the expiration date can be extended to the eighth anniversary of the date of grant or longer upon the satisfaction of certain conditions specified in the award agreement. For the three and six months ended June 30, 2015, the Partnership recorded approximately $1.0 million and $2.3 million, respectively, of unit-based compensation expense with respect to the Employee Equity Grants. As of June 30, 2015, the unrecognized unit-based compensation expense for the Employee Equity Grants was approximately $15.7 million, which may be recognized variably over the remaining term of the awards based on the probability of the achievement of the performance vesting requirements. Of the July 2014 awards, a total of 7,500 phantom units were granted to certain employees of the Partnership Entities and are classified as liability awards for accounting purposes (the “Employee Liability Grants”). Each Employee Liability Grant will be settled in cash (as such award consists of less than 1,000 phantom units) and includes a DER. The Employee Liability Grants have an aggregate grant date fair value of $0.2 million and have the same term and vesting requirements as the Employee Equity Grants described in the preceding paragraph. For the three and six months ended June 30, 2015, the Partnership recorded less than $0.1 million of unit-based compensation expense during each period, with respect to the Employee Liability Grants. As of June 30, 2015, the unrecognized unit based compensation expense for the Employee Liability Grants was approximately $0.1 million, which may be recognized variably over the remaining term of the awards based on the probability of the achievement of the performance vesting requirements and is subject to remeasurement each reporting period until the awards settle. In March 2015, the Board authorized the grant of an aggregate of 45,668 phantom units pursuant to the 2013 Plan to certain employees, consultants and non-employee directors of the Partnership Entities (“2015 Equity Grants”). Each 2015 Equity Grant will be settled in common units and includes a DER. The 2015 Equity Grants are classified as equity awards for accounting purposes and have an aggregate grant date fair value of $0.9 million and vest in equal annual installments over a three-year period starting from the date of grant. For the three and six months ended June 30, 2015, the Partnership recorded less than $0.1 million of unit-based compensation expense during each period, with respect to the 2015 Equity Grants. As of June 30, 2015, the unrecognized unit-based compensation expense for the 2015 Equity Grants is approximately $0.8 million, which will be recognized ratably over the remaining term of the awards. During the three months ended June 30, 2015, the Board and Chief Executive Officer authorized the grant of an aggregate of 38,600 phantom units pursuant to the 2013 Plan to certain employees of the Partnership Entities (“2015 Performance Grants”). Each 2015 Performance Grant will be settled in common units and includes a DER. The 2015 Performance Grants are classified as equity awards for accounting purposes and have an aggregate grant date fair value of $0.7 million and have the same term and vesting requirements as the Employee Equity Grants described above. For the three and six months ended June 30, 2015, the Partnership recorded less than $0.1 million of unit-based compensation expense during each period, with respect to the 2015 Performance Grants. As of June 30, 2015, the unrecognized unit-based compensation expense for the 2015 Performance Grants is approximately $0.7 million, which may be recognized variably over the remaining term of the awards based on the probability of the achievement of the performance vesting requirements. Subject to applicable earning criteria, the DER included in each phantom unit award described above entitles the award recipient to a cash payment (or, if applicable, payment of other property) equal to the cash distribution (or, if applicable, distribution of other property) paid on an outstanding common unit to unitholders generally based on the number of common units related to the portion of the award recipient’s phantom units that have not vested and been settled as of the record date for such distribution. Cash distributions paid during the vesting period on phantom units that are classified as equity awards for accounting purposes are reflected initially as a reduction of partners’ capital. Cash distributions paid on such equity awards that are not initially expected to vest or ultimately do not vest are classified as compensation expense. As the probability of vesting changes, these initial categorizations could change. Cash distributions paid during the vesting period on phantom units that are classified as liability awards for accounting purposes are reflected as compensation expense and included in the “Selling, general and administrative” line item in the accompanying unaudited condensed consolidated statements of operations and comprehensive income. During the three and six months ended June 30, 2015, the Partnership paid approximately $0.4 million and $0.8 million, respectively, in DERs to phantom unit holders. For the three and six months ended June 30, 2015, $0.2 million and $0.4 million, respectively, was reflected as a reduction of partners’ capital, and the other $0.2 million and $0.4 million was reflected as compensation expense and included in the “Selling, general and administrative” line item in the accompanying unaudited condensed consolidated statements of operations and comprehensive income. The total compensation expense related to the 2013 Plan for the three and six months ended June 30, 2015 was $1.3 million and $2.9 million, respectively, which was included in the “Selling, general and administrative” line item in the accompanying unaudited condensed consolidated statements of operations and comprehensive income The following table presents phantom units granted pursuant to the 2013 Plan: Equity Awards Liability Awards Six Months Ended Six Months Ended June 30, 2015 June 30, 2015 Number Weighted Avg. Number Weighted Avg. of Phantom Grant Date of Phantom Grant Date Fair Value at Units Fair Value Units Fair Value 6/30/2015 Balance at December 31, 2014 928,500 $ 25.46 7,500 $ 25.46 $ 17.56 Granted 84,268 $ 19.16 - $ - $ - Vested - $ - - $ - $ - Forfeited (6,000 ) $ 25.46 - $ - $ - Balance at June 30, 2015 1,006,768 $ 24.93 7,500 $ 25.46 $ 17.56

Earnings Per Unit

Earnings Per Unit	6 Months Ended
	Jun. 30, 2015
Earnings Per Share [Abstract]
Earnings Per Unit	Note 10—Earnings Per Unit The Partnership uses the two-class method when calculating the net income per unit applicable to limited partners. The two-class method is based on the weighted-average number of common and subordinated units outstanding during the period. Basic net income per unit applicable to limited partners (including subordinated unitholders) is computed by dividing limited partners’ interest in net income, after deducting distributions, if any, by the weighted-average number of outstanding common and subordinated units. Payments made to the Partnership’s unitholders are determined in relation to actual distributions paid and are not based on the net income allocations used in the calculation of net income per unit. Diluted net income per unit applicable to limited partners includes the effects of potentially dilutive units on the Partnership’s units. For the three and six months ended June 30, 2015, the only potentially dilutive units outstanding consisted of the phantom units (see “Note 9—Equity Plans”). For the three and six months ended June 30, 2015, none of the phantom units are considered outstanding and therefore there were no potentially dilutive units outstanding. The following table sets forth the calculation of basic and diluted earnings per limited partner unit for the periods indicated (in thousands, except per unit data): Three Months Ended Six Months Ended June 30, June 30, 2015 2014 2015 2014 Net Income $ 2,188 $ 2,742 $ 2,494 $ 4,603 Less: Distribution equivalent rights for unissued units 231 - 466 - Net income available to limited partners $ 1,957 $ 2,742 $ 2,028 $ 4,603 Numerator for basic and diluted earnings per limited partner unit: Allocation of net income among limited partner interests: Net income allocated to common unitholders $ 1,841 $ 1,454 $ 1,876 $ 2,441 Net income (loss) allocated to subordinated unitholders $ 116 $ 1,288 $ 151 $ 2,162 Net income allocated to limited partners: $ 1,957 $ 2,742 $ 2,027 $ 4,603 Denominator for basic and diluted earnings per limited partner unit: Common units - (basic and diluted) 9,253 6,868 8,067 6,868 Subordinated units - (basic and diluted) 6,081 6,081 6,081 6,081 Earnings per limited partner unit: Common - (basic and diluted) $ 0.20 $ 0.21 $ 0.23 $ 0.36 Subordinated - (basic and diluted) $ 0.02 $ 0.21 $ 0.02 $ 0.36

Related Party Transactions

Related Party Transactions	6 Months Ended
	Jun. 30, 2015
Related Party Transactions [Abstract]
Related Party Transactions	Note 11—Related Party Transactions Agreements with Affiliates Payments to the General Partner and its Affiliates The General Partner conducts, directs and manages all activities of the Partnership. The General Partner is reimbursed on a monthly basis, or such other basis as may be determined, for: (i) all direct and indirect expenses it incurs or payments it makes on behalf of the Partnership and its subsidiaries; and (ii) all other expenses allocable to the Partnership and its subsidiaries or otherwise incurred by the General Partner in connection with operating the Partnership and its subsidiaries’ businesses (including expenses allocated to the General Partner by its affiliates). For the three months ended June 30, 2015 and 2014, the General Partner incurred expenses of $1.1 million and $1.1 million, respectively. For the six months ended June 30, 2015 and 2014, the General Partner incurred expenses of $2.2 million and $1.9 million, respectively. Such expenses are reimbursable from the Partnership and are reflected in the “Selling, general and administrative – affiliate” line on the accompanying unaudited condensed consolidated statements of operations and comprehensive income. As of June 30, 2015 and December 31, 2014, the Partnership had a payable of approximately $1.7 million and $0.4 million, respectively, to the General Partner, which is reflected as “Due to general partner” in the accompanying unaudited condensed consolidated balance sheets. Registration Rights Agreement with the Sponsors In connection with the IPO, the Partnership entered into a registration rights agreement with the Sponsor. Pursuant to the registration rights agreement, the Partnership is required to file, upon request of the Sponsor, a registration statement to register the common units issued to the Sponsor and the common units issuable upon the conversion of the subordinated units held by the Sponsor. In addition, the registration rights agreement gives the Sponsor piggyback registration rights under certain circumstances. The registration rights agreement also includes provisions dealing with holdback agreements, indemnification and contribution and allocation of expenses. These registration rights are transferable to affiliates and, in certain circumstances, to third parties. Other Transactions with Related Persons GCAC Guarantee GCAC guarantees up to $20 million of the Partnership’s Credit Facility. Under certain circumstances, the lenders may release GCAC from such guarantee. Storage and Throughput Agreements with Center Oil During 2007, the Partnership acquired seven terminals from Center Oil for $35.0 million in cash and 750,000 subordinated units in the Partnership. In connection with this purchase, the Partnership entered into a storage and throughput agreement with Center Oil whereby the Partnership provides storage and throughput services for various petroleum products to Center Oil at the terminals acquired by the Partnership in return for a fixed per barrel fee for each outbound barrel of Center Oil product shipped or committed to be shipped. The throughput fee is calculated and due monthly based on the terms and conditions as set forth in the storage and throughput agreement. In addition to the monthly throughput fee, Center Oil is required to pay the Partnership a fixed per barrel fee for any additives added into Center Oil’s product. The term of the storage and throughput agreement extends through June 2017. The agreement will automatically renew for a period of three years at the expiration of the current term at an inflation adjusted rate (subject to a cap), as determined in accordance with the agreement, unless a party delivers a written notice of its election to terminate the storage and throughput agreement at least eighteen months prior to the expiration of the current term. In February 2010, the Partnership acquired a 50% undivided interest in the Baltimore, MD terminal. In connection with the acquisition, the Partnership acquired an existing agreement with Center Oil whereby the Partnership provides ethanol storage and throughput services to Center Oil. The Partnership charges Center Oil a fixed fee for storage and a fee based upon ethanol throughput at the Baltimore, MD terminal. The storage and throughput fees are calculated monthly based on the terms and conditions of the storage and throughput agreement. This agreement was renewed under the one-year evergreen provision and has been extended to May 2016. In May 2011, the Partnership entered into an agreement to provide refined products storage and throughput services to Center Oil at the Baltimore, MD terminal. The Partnership charges Center Oil a fixed fee for storage and a fee for ethanol blending and any additives added to Center Oil’s product. The storage and throughput fees are calculated monthly based on the terms and conditions of the storage and throughput agreement. This agreement was not renewed and expired in May 2015. In May 2013, the Partnership entered into an agreement to provide gasoline storage and throughput services to Center Oil at the Brooklyn, NY terminal. The Partnership charges Center Oil a fixed per barrel fee for each inbound delivery of ethanol and every outbound barrel of product shipped and a fee for any ethanol blending and additives added to Center Oil’s product. The storage and throughput fees are calculated monthly based on the terms and conditions of the storage and throughput agreement. This agreement was renewed under the one-year evergreen provision and has been extended to May 2016. Storage and Throughput Agreements with GCAC In February 2013, the Partnership entered into a storage and throughput agreement with GCAC (the “GCAC Agreement 1”) whereby the Partnership provides storage and throughput services for various petroleum products to GCAC in return for a fixed per barrel storage fee plus a fixed per barrel fee for related throughput and other ancillary services. In addition, the Partnership entered into a second storage and throughput agreement with GCAC (the “GCAC Agreement 2”) whereby the Partnership built an additional 150,000 barrels of storage tanks for GCAC to store and throughput various petroleum products in return for similar economic terms of GCAC Agreement 1. The initial term of GCAC Agreements 1 and 2 is approximately five years. These agreements can be mutually extended by both parties as long as the extension is agreed to 180 days prior to the end of the initial termination date; otherwise the Partnership has the right to lease the storage capacity to any third party. The total revenues associated with the storage and throughput agreements for Center Oil and GCAC and reflected in the “Revenues – Related parties” line on the accompanying unaudited condensed consolidated statements of operations and comprehensive income are as follows (in thousands): Three Months Ended Six Months Ended June 30, June 30, 2015 2014 2015 2014 Center Oil $ 1,661 $ 1,581 $ 3,390 $ 3,466 GCAC 453 473 902 926 Total $ 2,114 $ 2,054 $ 4,292 $ 4,392 The total receivables associated with the storage and throughput agreements for Center Oil and GCAC and reflected in the “Due from related parties” line on the accompanying unaudited condensed consolidated balance sheets are as follows (in thousands): As of June 30, December 31, 2015 2014 Center Oil $ 953 $ 594 GCAC 297 306 Total $ 1,250 $ 900 Operating Lease Agreement In January 2014, the Partnership, through its wholly owned subsidiary, Arc Terminals Holdings, entered into a triple net operating lease agreement relating to the Portland Terminal together with a supplemental co-terminus triple net operating lease agreement for the use of certain pipeline infrastructure at such terminal (such lease agreements, collectively, the “Lease Agreement”), pursuant to which Arc Terminals Holdings leased the Portland Terminal from a wholly owned subsidiary of CorEnergy Infrastructure Trust, Inc. (“CorEnergy”). Arc Logistics guaranteed Arc Terminals Holdings’ obligations under the Lease Agreement. CorEnergy owns a 6.6% direct investment in Lightfoot Capital Partners LP and a 1.5% direct investment in Lightfoot Capital Partners GP LLC, the general partner of Lightfoot Capital Partners LP. The Lease Agreement has a 15-year initial term and may be extended for additional five-year terms at the sole discretion of Arc Terminals Holdings, subject to renegotiated rental payment terms. During the term of the Lease Agreement, Arc Terminals Holdings will make base monthly rental payments and variable rent payments based on the volume of liquid hydrocarbons that flowed through the Portland Terminal in the prior month. The base rent in the initial years of the Lease Agreement was $230,000 per month through July 2014 (prorated for the partial month of January 2014) and are $417,522 for each month thereafter until the end of year five. The base rent also increased each month starting with the month of August 2014 by a factor of 0.00958 of the specified construction costs incurred by LCP Oregon Holdings LLC (“LCP Oregon”) at the Portland Terminal, estimated at $10 million. Assuming such improvements are completed, the base rent will increase by approximately $95,800 per month. As of June 30, 2015, spending on terminal-related projects by CorEnergy since the commencement of the Lease Agreement totaled approximately $8.8 million and, as a result, the base rent has increased by approximately $84,000 per month. The base rent will be increased at the end of year five by the change in the consumer price index for the prior five years, and every year thereafter by the greater of two percent or the change in the consumer price index. The base rent is not influenced by the flow of hydrocarbons. Variable rent will result from the flow of hydrocarbons through the Portland Terminal in excess of a designated threshold of 12,500 barrels per day of oil equivalent. Variable rent is capped at 30% of base rent payments regardless of the level of hydrocarbon throughput. During the three months ended June 30, 2015 and 2014, the expense associated with the Lease Agreement was $1.6 million and $1.6 million, respectively. During the six months ended June 30, 2015 and 2014, the expense associated with the Lease Agreement was $3.2 million and $3.3 million, respectively. During the three and six months ended June 30, 2015 and 2014, there was no variable rent associated with the Lease Agreement. So long as Arc Terminals Holdings is not in default under the Lease Agreement, it shall have the right to purchase the Portland Terminal at the end of the third year of the Lease Agreement and at the end of any month thereafter by delivery of 90 days’ notice (“Purchase Option”). The purchase price shall be the greater of (i) nine times the total of base rent and variable rent for the 12 months immediately preceding the notice and (ii) $65.7 million. If the Purchase Option is not exercised, the Lease Agreement shall remain in place and Arc Terminals Holdings shall continue to pay rent as provided above. Arc Terminals Holdings also has the option to terminate the Lease Agreement on the fifth and tenth anniversaries, by providing written notice 12 months in advance, for a termination fee of approximately $4 million and $6 million, respectively. Joliet LLC Agreement In connection with the JBBR Acquisition, the Partnership and an affiliate of GE EFS entered into an amended and restated limited liability company agreement of Joliet Holdings governing their respective interests in Joliet Holdings (the “Joliet LLC Agreement”). An affiliate of GE EFS owns 40% of Joliet Holdings, while the remaining 60% is owned by the Partnership. GE EFS owns, indirectly, interests in Lightfoot. Lightfoot has a significant interest in the Partnership through its ownership of a 29.9% limited partner interest in the Partnership, 100% of the limited liability company interests in the General Partner and all of the Partnership’s incentive distribution rights. Daniel Castagnola serves on the board of managers of Lightfoot Capital Partners GP LLC and on the Board of the General Partner and is a Managing Director at GE EFS, which is an affiliate of General Electric Capital Corporation. In addition, Arc Terminals Holdings entered into a Management Services Agreement (the “MSA”) with Joliet Holdings to manage and operate the Joliet Terminal. Arc Terminals Holdings is receiving a fixed monthly management fee and reimbursements for out-of-pocket expenses. In addition, Arc Terminals Holdings may receive additional monthly management fees based upon the throughput activity at the Joliet Terminal. During the three and six months ended June 30, 2015, the Partnership was paid $0.4 million, in each period, in fees and reimbursements by Joliet Holdings under the MSA. PIPE Transaction Registration Rights Agreement with PIPE Investors Pursuant to the Unit Purchase Agreement dated as of February 19, 2015 (the “PIPE Purchase Agreement”) among the Partnership and the purchasers named therein (the “PIPE Purchasers”), the Partnership sold 4,520,795 common units at a price of $16.59 per common unit in a private placement (the “PIPE Transaction”) on May 14, 2015 for proceeds totaling $72.7 million after placement agent commissions and expenses, which were used to partially finance the Partnership’s portion of the JBBR Acquisition. As a part of the PIPE Transaction, the Partnership entered into a registration rights agreement (the “PIPE Registration Rights Agreement”), dated May 14, 2015, with the PIPE Purchasers. The issuance of the common units pursuant to the PIPE Purchase Agreement was made in reliance upon an exemption from the registration requirements of the Securities Act of 1933 pursuant to Section 4(a)(2) thereof. Pursuant to the PIPE Registration Rights Agreement, the Partnership filed, and the SEC declared effective, a shelf registration statement registering the common units of the PIPE Purchasers. In addition, the PIPE Registration Rights Agreement gives the PIPE Purchasers piggyback registration rights under certain circumstances. These registration rights are transferable to affiliates of the PIPE Purchasers. Material Relationships Relating to PIPE Transaction MTP Energy Master Fund Ltd. (“Magnetar PIPE Investor”), one of the PIPE Purchasers, purchased 572,635 c u

Major Customers

Major Customers	6 Months Ended
	Jun. 30, 2015
Risks And Uncertainties [Abstract]
Major Customers	Note 12—Major Customers The following table presents the percentage of revenues and receivables associated with the Partnership’s significant customers (those that have accounted for 10% or more of the Partnership’s revenues in a given period) for the periods indicated: % of Revenues % of Revenues Three Months Ended Six Months Ended % of Receivables June 30, June 30, June 30, December 31, 2015 2014 2015 2014 2015 2014 Customer A 19 % 23 % 21 % 16 % 14 % 26 % Customer B 9 % 11 % 10 % 12 % 12 % 13 % Customer C 24 % 2 % 15 % 2 % 38 % 4 % Total 52 % 36 % 46 % 30 % 64 % 43 %

Commitments and Contingencies

Commitments and Contingencies	6 Months Ended
	Jun. 30, 2015
Commitments And Contingencies Disclosure [Abstract]
Commitments and Contingencies	Note 13—Commitments and Contingencies Environmental matters The Partnership may have environmental liabilities that arise from time to time in the ordinary course of business and provides for losses associated with environmental remediation obligations, when such losses are probable and reasonably estimable. Estimated losses from environmental remediation obligations generally are recognized no later than completion of the remedial feasibility study. Loss accruals are adjusted as further information becomes available or circumstances change. Costs of future expenditures for environmental remediation obligations are not discounted to their present value. There were no accruals recorded for environmental losses as of June 30, 2015 and December 31, 2014. Commitments and contractual obligations Future non-cancelable commitments related to certain contractual obligations as of June 30, 2015 are presented below (in thousands): Payments Due by Period Total 2015 2016 2017 2018 2019 Thereafter Long-term debt obligations $ 176,063 $ - $ - $ - $ 176,063 $ - $ - Operating lease obligations 26,731 3,198 6,392 6,261 6,265 4,615 - Earn-out obligations 19,521 684 1,369 1,369 1,369 1,369 13,361 Total $ 222,315 $ 3,882 $ 7,761 $ 7,630 $ 183,697 $ 5,984 $ 13,361 The schedule above assumes the Partnership will either exercise its Purchase Option or its right to terminate the Lease Agreement (See “Note 11—Related Party Transactions—Other Transactions with Related Persons—Operating Lease Agreement” for further information). During 2014, the members of Gulf LNG Holdings approved spending up to approximately $14.6 million towards the development of a potential natural gas liquefaction and export terminal at the LNG Facility. Through June 30, 2015, capital calls totaling $14.6 million were issued to all members of Gulf LNG Holdings, for which the Partnership’s pro-rata share was approximately $1.5 million. As of June 30, 2015, there are no additional remaining capital commitments. In addition to the above, GCAC is able to receive up to an additional $5.0 million in cash earnout payments based upon the throughput activity of one customer through December 31, 2016. As of June 30, 2015, no additional amounts had been paid or are owed to GCAC. In connection with the JBBR Acquisition, CenterPoint is entitled to receive up to an additional $27.0 million in cash earn-out payments. As a part of the purchase price allocation related to the JBBR Acquisition, Joliet Holdings recorded a liability of $19.7 million, as of the date of the JBBR Acquisition, in connection with this potential CenterPoint earn-out payment. As of June 30, 2015, the Joliet Holdings has incurred $0.2 million related to the earn-out payment. The Partnership will continue to evaluate this liability each quarter for any changes in the estimated fair value.

Subsequent Events

Subsequent Events	6 Months Ended
	Jun. 30, 2015
Subsequent Events [Abstract]
Subsequent Events	Note 14—Subsequent Events Pawnee Terminal Acquisition In July 2015, the Partnership, through its subsidiary Arc Terminals Holdings, acquired all of the limited liability company interests of UET Midstream, LLC (“UET Midstream”) from United Energy Trading, LLC (“UET”) and Hawkeye Midstream, LLC (together with UET, the “Sellers,” and such acquisition the “Pawnee Terminal Acquisition”) for total consideration of approximately $78.3 million, consisting of cash and common units of the Partnership subject to certain adjustments including a reduction in the cash component of the consideration payable by Arc Terminals Holdings at closing equal to an agreed upon amount of UET Midstream’s revenue attributable to the period commencing on May 1, 2015 and ending on the closing date. The Sellers remain responsible for all of UET Midstream’s operating expenses and are entitled to receive all of UET Midstream’s revenue, in each case to the extent attributable to the period prior to closing. UET Midstream’s principal assets consist of a newly constructed, substantially completed crude oil terminal and a nearby development property in northeastern Weld County, Colorado. After taking into account certain estimated adjustments (which is subject to a further post-closing reconciliation procedure), the consideration paid to the Sellers at closing of approximately $76.6 million consisted of approximately $44.3 million in cash and approximately $32.3 million in unregistered common units of the Partnership. The number of common units issued to the Sellers at the closing of the Pawnee Terminal Acquisition was based upon an issuance price of $18.50 per unit, which resulted in the issuance of 1,745,669 of the Partnership’s common units. In connection with the issuance of the common units to the Sellers, the Partnership entered into an agreement with the Sellers granting the Sellers certain registration rights. Management is currently reviewing the valuation of the net assets acquired in connection with the Pawnee Terminal Acquisition to determine the final purchase price allocation, which is expected to be completed in the third quarter of 2015. Amendment to Credit Facility In July 2015 and in connection with the Pawnee Terminal Acquisition, Arc Terminals Holdings, together with the Partnership and certain of its other subsidiaries, as guarantors, entered into the third amendment to the Credit Facility (the “Third Amendment”). The Third Amendment principally modifies certain provisions of the Credit Facility (i) to permit the consummation of the Pawnee Terminal Acquisition and (ii) to increase the aggregate commitments under the Credit Facility from $275 million to $300 million. Cash Distributions In July 2015, the Partnership declared a quarterly cash distribution of $0.425 per unit ($1.70 per unit on an annualized basis) totaling approximately $8.2 million for all common and subordinated units outstanding. The distribution is for the period from April 1, 2015 through June 30, 2015. The second quarter distribution represents a 3.7% increase over the first quarter 2015 cash distribution of $0.41 per unit ($1.64 per unit on an annualized basis). The distribution is payable on August 14, 2015 to unitholders of record on August 10, 2015. In July 2015, Joliet Holdings made a distribution to the members of approximately $3.0 million. The Partnership received approximately $1.8 million of such distribution and the remaining $1.2 million was paid to an affiliate of GE EFS, the non-controlling interest member.

Summary of Significant Accoun21

Summary of Significant Accounting Policies (Policies)	6 Months Ended
	Jun. 30, 2015
Accounting Policies [Abstract]
Basis of Presentation	Basis of Presentation The accompanying interim statements of the Partnership have been prepared in accordance with GAAP for interim financial information and with the instructions to Form 10-Q and Article 10 of Regulation S-X issued by the SEC. Accordingly, they do not include all of the information and footnotes required by GAAP for complete financial statements. In the opinion of management, all adjustments, consisting only of normal recurring adjustments and disclosures necessary for a fair statement of these interim statements have been included. The results reported in these interim statements are not necessarily indicative of the results that may be reported for the entire year or for any other period. These interim statements should be read in conjunction with the Partnership’s consolidated financial statements for the year ended December 31, 2014, which are included in the 2014 Partnership 10-K, as filed with the SEC. The year-end balance sheet data was derived from the audited financial statements, but does not include all disclosures required by GAAP.
Use of Estimates	Use of Estimates The preparation of financial statements in conformity with GAAP requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities and disclosure of contingent assets and liabilities at the date of the financial statements. The most significant estimates relate to the valuation of acquired businesses, goodwill and intangible assets, assessment for impairment of long-lived assets and the useful lives of intangible assets and property, plant and equipment. Actual results could differ from those estimates.
Impairment of Long-Lived Assets	Impairment of Long-Lived Assets Long-lived assets are reviewed for impairment whenever events or changes in circumstances indicate that the carrying amount of an asset may not be recoverable. Recoverability of assets to be held and used is measured by a comparison of the carrying amount of an asset to the estimated undiscounted future cash flows expected to be generated by the asset. If the carrying amount of an asset exceeds its estimated future cash flows, an impairment charge is recognized for the amount by which the carrying amount of the asset exceeds the estimated fair value of the asset. Assets to be disposed of are separately presented in the balance sheet and reported at the lower of the carrying amount or fair value less costs to sell and are no longer depreciated. No impairment charges were recorded during the six months ended June 30, 2015. Refer to “Note 5—Property, Plant and Equipment” for discussion on impairments recorded during the year ended December 31, 2014.
Goodwill	Goodwill Goodwill represents the excess of consideration paid over the fair value of net assets acquired in a business combination. Goodwill is not amortized but instead is assessed for impairment at least annually or when facts and circumstances warrant. The Partnership determined at December 31, 2014 that there were no impairment charges and subsequent to that date no event indicating an impairment has occurred. A summary of the changes in the carrying amount of goodwill is as follows (in thousands): As of June 30, December 31, 2015 2014 Beginning Balance $ 15,162 $ 15,162 Goodwill acquired 24,709 - Impairment - - Ending Balance $ 39,871 $ 15,162 Refer to “Note 3—Acquisitions – JBBR Acquisition” for discussion on the goodwill recorded in the second quarter of 2015 in connection with the JBBR Acquisition.
Deferred Rent	Deferred Rent The Lease Agreement (as defined in “Note 11—Related Party Transactions—Other Transactions with Related Persons—Operating Lease Agreement”
Revenue Recognition	Revenue Recognition Revenues from leased tank storage and delivery services are recognized as the services are performed, evidence of a contractual arrangement exists and collectability is reasonably assured. Revenues also include the sale of excess products and additives which are mixed with customer-owned liquid products. Revenues for the sale of excess products and additives are recognized when title and risk of loss passes to the customer.
Fair Value of Financial Instruments	Fair Value of Financial Instruments Fair value is defined as the price that would be received to sell an asset or paid to transfer a liability in an orderly transaction between market participants at a specified measurement date. Fair value measurements are derived using inputs and assumptions that market participants would use in pricing an asset or liability, including assumptions about risk. GAAP establishes a valuation hierarchy for disclosure of the inputs to valuation used to measure fair value. This three-tier hierarchy classifies fair value amounts recognized or disclosed in the condensed consolidated financial statements based on the observability of inputs used to estimate such fair values. The classification within the hierarchy of a financial asset or liability is determined based on the lowest level input that is significant to the fair value measurement. The hierarchy considers fair value amounts based on observable inputs (Level 1 and 2) to be more reliable and predictable than those based primarily on unobservable inputs (Level 3). At each balance sheet reporting date, the Partnership categorizes its financial assets and liabilities using this hierarchy. The amounts reported in the balance sheet for cash equivalents, accounts receivable, accounts payable and accrued liabilities approximate their fair value because of the short-term maturities of these instruments (Level 1). Because the Credit Facility (as defined in “Note 7 – Debt – Credit Facility” below) has a market rate of interest, its carrying amount approximated fair value (Level 2). In connection with the JBBR Acquisition, Joliet Holdings has an earn-out obligation to CenterPoint which was valued at the time of the JBBR Acquisition, in connection with the purchase price allocation, at approximately $19.7 million. Refer to “Note 3—Acquisitions – JBBR Acquisition” for further discussion on the JBBR Acquisition. Joliet Holdings’ earn-out obligations to CenterPoint will terminate upon the payment, in the aggregate, of $27.0 million. Since the fair value of the contingent consideration obligation is based primarily upon unobservable inputs it is classified as Level 3 in the fair value hierarchy. The contingent consideration obligation, incurred in connection with the JBBR Acquisition, will be revalued at each reporting period and changes to the fair value will be recorded into “Other income (expense)”. Increases or decreases in the fair value of the contingent consideration obligations can result from changes in the assumed timing of revenue and expense estimates. Significant judgement is employed in determining the appropriateness of these assumptions as of the acquisition date and for each subsequent reporting period. Accordingly, future business and economic conditions, can materially impact the amount of contingent consideration expense we record in any given period. No revalue adjustments were necessary during the three and six months ended June 30, 2015. As of June 30, 2015, the Joliet Holdings has incurred $0.2 million related to the earn-out obligation. The Partnership believes that its valuation methods are appropriate and consistent with the values that would be determined by other market participants. However, the use of different methodologies or assumptions to determine fair value of certain financial instruments could result in a different estimate of fair value at the reporting date.
Unit-Based Compensation	Unit-Based Compensation The Partnership recognizes all unit-based compensation to directors, officers, employees and other service providers in the consolidated financial statements based on the fair value of the awards. Fair value for unit-based awards classified as equity awards is determined on the grant date of the award, and this value is recognized as compensation expense ratably over the requisite service or performance period of the equity award. Fair value for equity awards is calculated at the closing price of the common units on the grant date. Fair value for unit-based awards classified as liability awards is calculated at the closing price of the common units on the grant date and is remeasured at each reporting period until the award is settled. Compensation expense related to unit-based awards is included in the “Selling, general and administrative” line item in the accompanying unaudited condensed consolidated statements of operations and comprehensive income. For awards with performance conditions, the expense is accrued over the service period only if the performance condition is considered to be probable of occurring. When awards with performance conditions that were previously considered improbable become probable, the Partnership incurs additional expense in the period that the probability assessment changes (see “Note 9—Equity Plans”).
Net Income Per Unit	Net Income Per Unit The Partnership uses the two-class method in the computation of earnings per unit since there is more than one participating class of securities. Earnings per common and subordinated unit are determined by dividing net income allocated to the common units and subordinated units, respectively, after deducting the amount allocated to the phantom units, if any, by the weighted average number of outstanding common and subordinated units, respectively, during the period. The overall computation, presentation and disclosure of the Partnership’s limited partners’ net income per unit are made in accordance with the Financial Accounting Standards Board (“FASB”) Accounting Standards Codification (“ASC”) Topic 260 “Earnings per Share.”
Segment Reporting	Segment Reporting The Partnership derives revenue from operating its terminal and transloading facilities. These facilities have been aggregated into one reportable segment because the facilities have similar long-term economic characteristics, products and types of customers.
Noncontrolling Interests	Noncontrolling Interests The Partnership applies the provisions of ASC 810 Consolidations
Recently Issued Accounting Pronouncements	Recently Issued Accounting Pronouncements In May 2014, the FASB issued updated guidance on the reporting and disclosure of revenue recognition. The update requires that an entity recognize revenue to depict the transfer of goods or services to customers in an amount that reflects the consideration to which the entity expects to be entitled in exchange for those goods or services. This update also requires new qualitative and quantitative disclosures about the nature, amount, timing and uncertainty of revenue and cash flows arising from customer contracts, including significant judgments and changes in judgments, information about contract balances and performance obligations, and assets recognized from costs incurred to obtain or fulfill a contract. The Partnership is currently evaluating the potential impact of this authoritative guidance on its financial condition, results of operations, cash flows and related disclosures. In April 2015, the FASB proposed a one year deferral of the effective date, and therefore, this guidance will be effective for the Partnership beginning in the first quarter of 2018, with early adoption optional but not before the original effective date of December 15, 2016. In June 2014, the FASB issued new guidance related to stock compensation. The new standard requires that a performance target that affects vesting, and that could be achieved after the requisite service period, be treated as a performance condition. As such, the performance target should not be reflected in estimating the grant date fair value of the award. This update further clarifies that compensation cost should be recognized in the period in which it becomes probable that the performance target will be achieved and should represent the compensation cost attributable to the periods for which the requisite service has already been rendered. The Partnership does not expect this requirement to have a significant impact on its financial condition, results of operations, cash flows and related disclosures. This guidance will be effective for the Partnership beginning in the first quarter of 2016, with early adoption optional. In February 2015, the FASB issued new guidance related to evaluating entities for inclusion in consolidations for both the variable interest model and for the voting model for limited partnerships and similar entities. The update requires that all reporting entities reevaluate whether they should consolidate certain legal entities. The Partnership does not expect this requirement to have a significant impact on its financial condition, results of operations, cash flows and related disclosures. This guidance will be effective for the Partnership in the first quarter of 2016, with early adoption optional. In April 2015, the FASB issued new guidance related to presentation of debt issuance costs. The update requires debt issuance costs to be presented in the balance sheet as a direct deduction from the carrying value of the associated debt liability, consistent with the presentation of a debt discount. The Partnership is currently assessing the impact that adopting this new accounting guidance will have on its consolidated financial statements and disclosures. This guidance will be effective for the Partnership in the first quarter of 2016, with early adoption optional. In April 2015, the FASB issued new guidance related to the accounting for fees paid in a cloud computing arrangement. The standard clarifies the circumstances under which a cloud computing customer would account for the arrangement as a license of internal-use software under ASC 350-40. The Partnership does not expect this requirement to have a significant impact on its financial condition, results of operations, cash flows and related disclosures. This guidance will be effective for the Partnership in the first quarter of 2016, with early adoption optional. In April 2015, the FASB issued new guidance specifying that for purposes of calculating historical earnings per unit under the two-class method, the earnings (losses) of a transferred business before the date of a drop down transaction should be allocated entirely to the general partner. In that circumstance, the previously reported earnings per unit of the limited partners (which is typically the earnings per unit measure presented in the financial statements) would not change as a result of the drop down transaction. In addition, the standard requires additional qualitative disclosures about how the rights to the earnings (losses) differ before and after the drop down transaction occurs for purposes of computing earnings per unit under the two-class method. The new accounting guidance is effective for the Partnership beginning in the first quarter of 2016, and .

Summary of Significant Accoun22

Summary of Significant Accounting Policies (Tables)	6 Months Ended
	Jun. 30, 2015
Accounting Policies [Abstract]
Schedule of Goodwill	A summary of the changes in the carrying amount of goodwill is as follows (in thousands): As of June 30, December 31, 2015 2014 Beginning Balance $ 15,162 $ 15,162 Goodwill acquired 24,709 - Impairment - - Ending Balance $ 39,871 $ 15,162

Acquisitions (Tables)

Acquisitions (Tables)	6 Months Ended
	Jun. 30, 2015
Business Combinations [Abstract]
Summary of Consideration Paid and Assets Acquired	The following table summarizes the consideration paid and the assets acquired at the JBBR Acquisition closing date (in thousands): Consideration: Cash paid to seller $ 216,000 Earn-out liability recognized 19,700 Total consideration $ 235,700 Allocation of purchase price: Property and equipment $ 156,991 Intangible assets 54,000 Goodwill 24,709 Net assets acquired $ 235,700

Investment in Unconsolidated 24

Investment in Unconsolidated Affiliate (Tables)	6 Months Ended
	Jun. 30, 2015
Schedule of Investment in Unconsolidated Affiliate	“Investment in unconsolidated affiliate” consisted of the LNG Interest, and its balances as of June 30, 2015 and December 31, 2014 are represented below (in thousands): Balance at December 31, 2014 $ 72,858 Equity earnings 4,992 Contributions 310 Distributions (4,377 ) Amortization of premium (155 ) Other comprehensive income 369 Balance at June 30, 2015 $ 73,997
Schedule of Estimated Aggregate Amortization of Premium	The estimated aggregate amortization of this premium for its remaining useful life from June 30, 2015 is as follows (in thousands): Total 2015 $ 154 2016 309 2017 309 2018 309 2019 309 Thereafter 6,753 $ 8,143
Gulf LNG Holdings [Member]
Schedule of Investment in Unconsolidated Affiliate	Summarized financial information for Gulf LNG Holdings is reported below (in thousands): June 30, December 31, 2015 2014 Balance sheets Current assets $ 7,576 $ 12,537 Noncurrent assets 905,324 918,334 Total assets $ 912,900 $ 930,871 Current liabilities $ 78,291 $ 85,818 Long-term liabilities 701,726 724,755 Member’s equity 132,883 120,298 Total liabilities and member’s equity $ 912,900 $ 930,871 Three Months Ended Six Months Ended June 30, June 30, 2015 2014 2015 2014 Income statements Revenues $ 46,625 $ 46,560 $ 93,249 $ 93,121 Total operating costs and expenses 14,283 14,151 28,489 28,431 Operating income 32,342 32,409 64,760 64,690 Net income $ 24,252 $ 24,147 $ 48,417 $ 47,803

Property, Plant and Equipment (

Property, Plant and Equipment (Tables)	6 Months Ended
	Jun. 30, 2015
Property Plant And Equipment [Abstract]
Schedule of Property, Plant and Equipment	The Partnership’s property, plant and equipment consisted of (in thousands): As of June 30, December 31, 2015 2014 Land $ 74,745 $ 49,615 Buildings and site improvements 68,033 36,298 Tanks and trim 101,958 91,463 Pipelines 20,364 - Machinery and equipment 108,536 32,815 Office furniture and equipment 2,381 2,348 Construction in progress 3,061 6,175 379,078 218,714 Less: Accumulated depreciation (27,290 ) (22,828 ) Property, plant and equipment, net $ 351,788 $ 195,886

Intangible Assets (Tables)

Intangible Assets (Tables)	6 Months Ended
	Jun. 30, 2015
Goodwill And Intangible Assets Disclosure [Abstract]
Summary of Partnership's Intangible Assets	The Partnership’s intangible assets consisted of (in thousands): Estimated As of Useful Lives June 30, December 31, in Years 2015 2014 Customer relationships 21 $ 4,785 $ 4,785 Acquired contracts 2-12 93,900 39,900 Noncompete agreements 2-3 741 741 99,426 45,426 Less: Accumulated amortization (15,458 ) (12,237 ) Intangible assets, net $ 83,968 $ 33,189

Partners' Capital and Distrib27

Partners' Capital and Distributions (Tables)	6 Months Ended
	Jun. 30, 2015
Equity [Abstract]
Schedule of the Quarterly Distributions Related to the Partnership's Quarterly Financial Results	The table below summarizes the quarterly distributions related to the Partnership’s quarterly financial results (in thousands, except per unit data): Total Quarterly Total Cash Date of Unitholders Quarter Ended Distribution Per Unit Distribution Distribution Record Date June 30, 2015 $ 0.4250 $ 8,181 August 14, 2015 August 10, 2015 March 31, 2015 $ 0.4100 $ 5,309 May 15, 2015 May 11, 2015 December 31, 2014 $ 0.4100 $ 5,309 February 17, 2015 February 9, 2015 September 30, 2014 $ 0.4100 $ 5,309 November 17, 2014 November 10, 2014 June 30, 2014 $ 0.4000 $ 5,180 August 18, 2014 August 11, 2014
Percentage of Incentive Distribution Rights to Partnership's Unitholders and General Partner	If cash distributions to the Partnership’s unitholders exceed $0.4456 per unit in any quarter, the Partnership’s unitholders and the General Partner, as the initial holder of the incentive distribution rights, will receive distributions according to the following percentage allocations: Total Quarterly Distribution Per Unit Target Amount Marginal Percentage Unitholders General above $0.3875 up to $0.4456 100.0 % 0.0 % above $0.4456 up to $0.4844 85.0 % 15.0 % above $0.4844 up to $0.5813 75.0 % 25.0 % above $0.5813 50.0 % 50.0 %

Equity Plans (Table)

Equity Plans (Table)	6 Months Ended
	Jun. 30, 2015
Disclosure Of Compensation Related Costs Sharebased Payments [Abstract]
Schedule of Share-based Compensation, Stock Options, Activity	The following table presents phantom units granted pursuant to the 2013 Plan: Equity Awards Liability Awards Six Months Ended Six Months Ended June 30, 2015 June 30, 2015 Number Weighted Avg. Number Weighted Avg. of Phantom Grant Date of Phantom Grant Date Fair Value at Units Fair Value Units Fair Value 6/30/2015 Balance at December 31, 2014 928,500 $ 25.46 7,500 $ 25.46 $ 17.56 Granted 84,268 $ 19.16 - $ - $ - Vested - $ - - $ - $ - Forfeited (6,000 ) $ 25.46 - $ - $ - Balance at June 30, 2015 1,006,768 $ 24.93 7,500 $ 25.46 $ 17.56

Earnings Per Unit (Tables)

Earnings Per Unit (Tables)	6 Months Ended
	Jun. 30, 2015
Earnings Per Share [Abstract]
Schedule of Earnings Per Unit	The following table sets forth the calculation of basic and diluted earnings per limited partner unit for the periods indicated (in thousands, except per unit data): Three Months Ended Six Months Ended June 30, June 30, 2015 2014 2015 2014 Net Income $ 2,188 $ 2,742 $ 2,494 $ 4,603 Less: Distribution equivalent rights for unissued units 231 - 466 - Net income available to limited partners $ 1,957 $ 2,742 $ 2,028 $ 4,603 Numerator for basic and diluted earnings per limited partner unit: Allocation of net income among limited partner interests: Net income allocated to common unitholders $ 1,841 $ 1,454 $ 1,876 $ 2,441 Net income (loss) allocated to subordinated unitholders $ 116 $ 1,288 $ 151 $ 2,162 Net income allocated to limited partners: $ 1,957 $ 2,742 $ 2,027 $ 4,603 Denominator for basic and diluted earnings per limited partner unit: Common units - (basic and diluted) 9,253 6,868 8,067 6,868 Subordinated units - (basic and diluted) 6,081 6,081 6,081 6,081 Earnings per limited partner unit: Common - (basic and diluted) $ 0.20 $ 0.21 $ 0.23 $ 0.36 Subordinated - (basic and diluted) $ 0.02 $ 0.21 $ 0.02 $ 0.36

Related Party Transactions (Tab

Related Party Transactions (Tables)	6 Months Ended
	Jun. 30, 2015
Related Party Transactions [Abstract]
Schedule of Related Party Transactions	The total revenues associated with the storage and throughput agreements for Center Oil and GCAC and reflected in the “Revenues – Related parties” line on the accompanying unaudited condensed consolidated statements of operations and comprehensive income are as follows (in thousands): Three Months Ended Six Months Ended June 30, June 30, 2015 2014 2015 2014 Center Oil $ 1,661 $ 1,581 $ 3,390 $ 3,466 GCAC 453 473 902 926 Total $ 2,114 $ 2,054 $ 4,292 $ 4,392 The total receivables associated with the storage and throughput agreements for Center Oil and GCAC and reflected in the “Due from related parties” line on the accompanying unaudited condensed consolidated balance sheets are as follows (in thousands): As of June 30, December 31, 2015 2014 Center Oil $ 953 $ 594 GCAC 297 306 Total $ 1,250 $ 900

Major Customers (Tables)

Major Customers (Tables)	6 Months Ended
	Jun. 30, 2015
Risks And Uncertainties [Abstract]
Schedules of Percentages of Revenues and Receivables Associated with Significant Customers	The following table presents the percentage of revenues and receivables associated with the Partnership’s significant customers (those that have accounted for 10% or more of the Partnership’s revenues in a given period) for the periods indicated: % of Revenues % of Revenues Three Months Ended Six Months Ended % of Receivables June 30, June 30, June 30, December 31, 2015 2014 2015 2014 2015 2014 Customer A 19 % 23 % 21 % 16 % 14 % 26 % Customer B 9 % 11 % 10 % 12 % 12 % 13 % Customer C 24 % 2 % 15 % 2 % 38 % 4 % Total 52 % 36 % 46 % 30 % 64 % 43 %

Commitments and Contingencies (

Commitments and Contingencies (Tables)	6 Months Ended
	Jun. 30, 2015
Commitments And Contingencies Disclosure [Abstract]
Schedule of Future Non-Cancelable Commitments Related to Certain Contractual Obligations	Future non-cancelable commitments related to certain contractual obligations as of June 30, 2015 are presented below (in thousands): Payments Due by Period Total 2015 2016 2017 2018 2019 Thereafter Long-term debt obligations $ 176,063 $ - $ - $ - $ 176,063 $ - $ - Operating lease obligations 26,731 3,198 6,392 6,261 6,265 4,615 - Earn-out obligations 19,521 684 1,369 1,369 1,369 1,369 13,361 Total $ 222,315 $ 3,882 $ 7,761 $ 7,630 $ 183,697 $ 5,984 $ 13,361

Organization and Presentation -

Organization and Presentation - Additional Information (Detail) - $ / shares	Nov. 30, 2013	May. 31, 2015	Nov. 30, 2013	Jun. 30, 2015
Lightfoot Capital Partners LP And Lightfoot Capital Partners GPLLC [Member]
Organization [Line Items]
Limited partners capital units percentage				29.90%
Lightfoot Capital Partners LP And Lightfoot Capital Partners GPLLC [Member] | Common Units [Member]
Organization [Line Items]
Limited partners capital units owned				68,617
Lightfoot Capital Partners LP And Lightfoot Capital Partners GPLLC [Member] | Subordinated Units [Member]
Organization [Line Items]
Limited partners capital units owned				5,146,264
JBBR Acquisition [Member] | Arc Logistics Partners LP [Member]
Organization [Line Items]
Business combination, equity interest in acquire percentage		60.00%
JBBR Acquisition [Member] | G E Energy Financial Services
Organization [Line Items]
Business combination, equity interest in acquire percentage		40.00%
Initial Public Offering [Member] | Limited Partners [Member]
Organization [Line Items]
Common units issued in initial public offering			6,786,869
Common units issued, per unit	$ 19		$ 19
Initial Public Offering [Member] | Underwriters' Over-allotment Option [Member] | Limited Partners [Member]
Organization [Line Items]
Common units issued in initial public offering			786,869
Private Placement [Member] | JBBR Acquisition [Member]
Organization [Line Items]
Sale of common units, shares		4,520,795
Price per unit of common units		$ 16.59
Gulf LNG Holdings [Member]
Organization [Line Items]
Limited partners capital units percentage	10.30%

Summary of Significant Accoun34

Summary of Significant Accounting Policies - Additional Information (Detail) $ in Thousands	6 Months Ended	12 Months Ended
	Jun. 30, 2015USD ($)Segment	Dec. 31, 2014USD ($)	May. 31, 2015USD ($)
Schedule Of Accounting Policies [Line Items]
Impairment charges	$ 0	$ 0
Number of reportable segment | Segment	1
Distributions to noncontrolling interest holders	$ 0
JBBR Acquisition [Member]
Schedule Of Accounting Policies [Line Items]
Purchase price allocation, liability recorded	19,700
Earn-out payments	27,000		$ 19,700
JBBR Acquisition [Member] | Joliet Holding [Member]
Schedule Of Accounting Policies [Line Items]
Business acquisition earn-out obligation	$ 200

Summary of Significant Accoun35

Summary of Significant Accounting Policies - Schedule of Goodwill (Detail) $ in Thousands	6 Months Ended
	Jun. 30, 2015USD ($)
Goodwill And Intangible Assets Disclosure [Abstract]
Beginning Balance	$ 15,162
Goodwill acquired	24,709
Ending Balance	$ 39,871

Acquisitions - Additional Infor

Acquisitions - Additional Information (Detail) - USD ($) $ / shares in Units, $ in Thousands	1 Months Ended		6 Months Ended
	Jun. 30, 2015	May. 31, 2015	Jun. 30, 2015	Jun. 30, 2014	Dec. 31, 2014	Dec. 31, 2013
Business Acquisition [Line Items]
Proceeds from credit facility			$ 65,000	$ 27,500
Goodwill	$ 39,871		39,871		$ 15,162	$ 15,162
JBBR Acquisition [Member]
Business Acquisition [Line Items]
Cash paid to seller		$ 216,000
Earn-out payments	27,000	19,700	27,000
Proceeds from private placement		72,700
Purchase price allocation, liability recorded	19,700		$ 19,700
Identifiable assets acquired, fair value		211,000
Goodwill		24,709
Transaction costs		$ 1,300
Total revenue	4,400
Operating income	$ 1,600
JBBR Acquisition [Member] | Private Placement [Member]
Business Acquisition [Line Items]
Sale of common units, shares		4,520,795
Price per unit of common units		$ 16.59
Proceeds from credit facility		$ 61,000

Acquisitions - Summary of Consi

Acquisitions - Summary of Consideration Paid and Assets Acquired (Detail) - USD ($) $ in Thousands	1 Months Ended
	May. 31, 2015	Jun. 30, 2015	Dec. 31, 2014	Dec. 31, 2013
Allocation of purchase price:
Goodwill		$ 39,871	$ 15,162	$ 15,162
JBBR Acquisition [Member]
Consideration:
Cash paid to seller	$ 216,000
Earn-out liability recognized	19,700	$ 27,000
Total consideration	235,700
Allocation of purchase price:
Property and equipment	156,991
Intangible assets	54,000
Goodwill	24,709
Net assets acquired	$ 235,700

Investment in Unconsolidated 38

Investment in Unconsolidated Affiliate - Schedule of Investments in Unconsolidated Affiliate (Detail) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2015	Jun. 30, 2014	Jun. 30, 2015	Jun. 30, 2014
Investments In And Advances To Affiliates Schedule Of Investments [Abstract]
Beginning balance			$ 72,858
Equity earnings	$ 2,503	$ 2,487	4,992	$ 4,924
Contributions			310	681
Distributions			(4,377)
Amortization of premium			(155)
Other comprehensive income	840	$ (353)	369	$ (440)
Ending balance	$ 73,997		$ 73,997

Investment in Unconsolidated 39

Investment in Unconsolidated Affiliate - Additional Information (Detail) - USD ($) $ in Thousands	1 Months Ended	6 Months Ended
	Nov. 30, 2013	Jun. 30, 2015	Jun. 30, 2014
Schedule Of Equity Method Investments [Line Items]
Purchase of LNG Interest from an affiliate		$ 310	$ 681
Gulf LNG Holdings Group, LLC Acquisition [Member]
Schedule Of Equity Method Investments [Line Items]
Purchase of LNG Interest from an affiliate	$ 72,700
Carrying value of LNG Interest	64,100
Purchase price excess paid over the carrying value	$ 8,600
Long lived assets useful life		28 years

Investment in Unconsolidated 40

Investment in Unconsolidated Affiliate - Schedule of Estimated Aggregate Amortization of Premium (Detail) - Jun. 30, 2015 - Gulf LNG Holdings Group, LLC Acquisition [Member] - USD ($) $ in Thousands	Total
Schedule Of Equity Method Investments [Line Items]
Estimated future amortization expense, 2015	$ 154
Estimated future amortization expense, 2016	309
Estimated future amortization expense, 2017	309
Estimated future amortization expense, 2018	309
Estimated future amortization expense, 2019	309
Estimated future amortization expense, Thereafter	6,753
Total future amortization expense	$ 8,143

Investment in Unconsolidated 41

Investment in Unconsolidated Affiliate - Summarized Financial Information for the Gulf LNG Holdings (Detail) - Gulf LNG Holdings Group, LLC Acquisition [Member] - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2015	Jun. 30, 2014	Jun. 30, 2015	Jun. 30, 2014	Dec. 31, 2014
Balance sheets
Current assets	$ 7,576		$ 7,576		$ 12,537
Noncurrent assets	905,324		905,324		918,334
Total assets	912,900		912,900		930,871
Current liabilities	78,291		78,291		85,818
Long-term liabilities	701,726		701,726		724,755
Member’s equity	132,883		132,883		120,298
Total liabilities and partners’ capital	912,900		912,900		$ 930,871
Income statements
Revenues	46,625	$ 46,560	93,249	$ 93,121
Total operating costs and expenses	14,283	14,151	28,489	28,431
Operating income	32,342	32,409	64,760	64,690
Net income	$ 24,252	$ 24,147	$ 48,417	$ 47,803

Property, Plant and Equipment -

Property, Plant and Equipment - Schedule of Property, Plant and Equipment (Detail) - USD ($) $ in Thousands	Jun. 30, 2015	Dec. 31, 2014
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	$ 379,078	$ 218,714
Less: Accumulated depreciation	(27,290)	(22,828)
Property, plant and equipment, net	351,788	195,886
Land [Member]
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	74,745	49,615
Building and Site Improvements [Member]
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	68,033	36,298
Tanks and Trim [Member]
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	101,958	91,463
Pipelines [Member]
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	20,364
Machinery and Equipment [Member]
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	108,536	32,815
Office Furniture and Equipment [Member]
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	2,381	2,348
Construction in Progress [Member]
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	$ 3,061	$ 6,175

Property, Plant and Equipment43

Property, Plant and Equipment - Additional Information (Detail) $ in Millions	12 Months Ended
	Dec. 31, 2014USD ($)
Property Plant And Equipment [Abstract]
Impairment loss	$ 6.1

Intangible Assets - Summary of

Intangible Assets - Summary of Partnership's Intangible Assets (Detail) - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2015	Dec. 31, 2014
Finite Lived Intangible Assets [Line Items]
Intangible assets, gross	$ 99,426	$ 45,426
Less: Accumulated amortization	(15,458)	(12,237)
Intangible assets, net	$ 83,968	33,189
Customer Relationships [Member]
Finite Lived Intangible Assets [Line Items]
Intangible assets estimated useful life	21 years
Intangible assets, gross	$ 4,785	4,785
Contract-Based Intangible Assets [Member]
Finite Lived Intangible Assets [Line Items]
Intangible assets, gross	$ 93,900	39,900
Contract-Based Intangible Assets [Member] | Minimum [Member]
Finite Lived Intangible Assets [Line Items]
Intangible assets estimated useful life	2 years
Contract-Based Intangible Assets [Member] | Maximum [Member]
Finite Lived Intangible Assets [Line Items]
Intangible assets estimated useful life	12 years
Noncompete Agreements [Member]
Finite Lived Intangible Assets [Line Items]
Intangible assets, gross	$ 741	$ 741
Noncompete Agreements [Member] | Minimum [Member]
Finite Lived Intangible Assets [Line Items]
Intangible assets estimated useful life	2 years
Noncompete Agreements [Member] | Maximum [Member]
Finite Lived Intangible Assets [Line Items]
Intangible assets estimated useful life	3 years

Intangible Assets - Additional

Intangible Assets - Additional Information (Detail) $ in Millions	Jun. 30, 2015USD ($)
Finite Lived Intangible Assets Future Amortization Expense [Abstract]
Estimated future amortization expense, remainder of 2015	$ 5.2
Estimated future amortization expense, 2016	10.1
Estimated future amortization expense, 2017	9.7
Estimated future amortization expense, 2018	8.5
Estimated future amortization expense, 2019	7.9
Estimated future amortization expense, thereafter	$ 42.7

Debt - Additional Information (

Debt - Additional Information (Detail)	1 Months Ended	6 Months Ended
	Nov. 30, 2013USD ($)	Jun. 30, 2015USD ($)	May. 31, 2015USD ($)	Dec. 31, 2014USD ($)
Line Of Credit Facility [Line Items]
Credit facility		$ 176,063,000		$ 111,063,000
Sublimit for issuance of swing line loans	$ 5,000,000
Percentage of increase in interest rate on default exists	2.00%
Minimum [Member]
Line Of Credit Facility [Line Items]
Commitment fee percentage on unused portion of facility	0.375%
Maximum [Member]
Line Of Credit Facility [Line Items]
Commitment fee percentage on unused portion of facility	0.50%
Credit Facility [Member]
Line Of Credit Facility [Line Items]
Line of Credit Facility, amount	$ 275,000,000	275,000,000	$ 275,000,000
Credit facility		$ 176,100,000
Line of Credit Facility, interest rate		3.19%
Letter of credit outstanding amount	10,000,000
Available capacity under the credit facility		$ 42,600,000
Amount of commitments under the Credit Facility	$ 100,000,000
Credit Facility, maturity date		Nov. 30, 2018
Maximum Credit Facility to be maintained as per credit facility	4.50
Minimum interest coverage ratio	2.50
Maximum secured leverage ratio	3.50
Credit Facility [Member] | Senior Notes [Member]
Line Of Credit Facility [Line Items]
Future issuance of debt	$ 200,000,000
Credit Facility [Member] | Maximum [Member]
Line Of Credit Facility [Line Items]
Increase in Partnership leverage ratio	5
Credit Facility [Member] | Base Rate [Member] | Minimum [Member]
Line Of Credit Facility [Line Items]
Basis points spread on floating rate debt	1.00%
Credit Facility [Member] | Base Rate [Member] | Maximum [Member]
Line Of Credit Facility [Line Items]
Basis points spread on floating rate debt	2.00%
Credit Facility [Member] | London Interbank Offered Rate (LIBOR) [Member] | Minimum [Member]
Line Of Credit Facility [Line Items]
Basis points spread on floating rate debt	2.00%
Credit Facility [Member] | London Interbank Offered Rate (LIBOR) [Member] | Maximum [Member]
Line Of Credit Facility [Line Items]
Basis points spread on floating rate debt	3.00%
Credit Facility [Member] | One-Month LIBOR Rate [Member]
Line Of Credit Facility [Line Items]
Basis points spread on floating rate debt	1.00%
Credit Facility [Member] | Federal Funds Rate [Member]
Line Of Credit Facility [Line Items]
Basis points spread on floating rate debt	0.50%
Credit Facility [Member] | Standby Letters of Credit [Member]
Line Of Credit Facility [Line Items]
Sublimit for letters of credit	$ 20,000,000		$ 20,000,000

Partners' Capital and Distrib47

Partners' Capital and Distributions - Schedule of the Quarterly Distributions Related to the Partnership's Quarterly Financial Results (Detail) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended
	Jun. 30, 2015	Mar. 31, 2015	Dec. 31, 2014	Sep. 30, 2014	Jun. 30, 2014
Incentive Distribution Managing Member Or General Partner [Abstract]
Total Quarterly Distribution Per Unit	$ 0.4250	$ 0.4100	$ 0.4100	$ 0.4100	$ 0.4000
Total Cash Distribution	$ 8,181	$ 5,309	$ 5,309	$ 5,309	$ 5,180
Date of Distribution	Aug. 14, 2015	May 15, 2015	Feb. 17, 2015	Nov. 17, 2014	Aug. 18, 2014
Unitholders Record Date	Aug. 10, 2015	May 11, 2015	Feb. 9, 2015	Nov. 10, 2014	Aug. 11, 2014

Partners' Capital and Distrib48

Partners' Capital and Distributions - Additional Information (Detail) - 6 months ended Jun. 30, 2015 - $ / shares	Total
Limited Partners Capital Account [Line Items]
Cash distribution after period end of each quarter	60 days
Annualized minimum quarterly distribution on each outstanding common and subordinated units, percentage	150.00%
Annualized minimum quarterly distribution on each outstanding common and subordinated units	$ 2.325
Conversion basis	When the subordination period ends, all subordinated units will convert into common units on a one-for-one basis, and all common units thereafter will no longer be entitled to arrearages.
Annualized Basis [Member]
Limited Partners Capital Account [Line Items]
Cash distribution received, per unit	$ 1.55
Common Units [Member]
Limited Partners Capital Account [Line Items]
Cash distribution received, per unit	0.3875
Subordinated Units [Member]
Limited Partners Capital Account [Line Items]
Cash distribution received, per unit	0.3875
All Unitholders [Member]
Limited Partners Capital Account [Line Items]
Cash distribution received, per unit	$ 0.4456

Partners' Capital and Distrib49

Partners' Capital and Distributions - Percentage of Incentive Distribution Rights to Partnership's Unitholders and General Partner (Detail)	6 Months Ended
	Jun. 30, 2015
Above $0.3875 up to $0.4456 [Member] | Unitholders [Member]
Incentive Distribution Made To Managing Member Or General Partner [Line Items]
Marginal Percentage Interest in Distributions	100.00%
Above $0.3875 up to $0.4456 [Member] | General Partner [Member]
Incentive Distribution Made To Managing Member Or General Partner [Line Items]
Marginal Percentage Interest in Distributions	0.00%
Above $0.4456 up to $0.4844 [Member] | Unitholders [Member]
Incentive Distribution Made To Managing Member Or General Partner [Line Items]
Marginal Percentage Interest in Distributions	85.00%
Above $0.4456 up to $0.4844 [Member] | General Partner [Member]
Incentive Distribution Made To Managing Member Or General Partner [Line Items]
Marginal Percentage Interest in Distributions	15.00%
Above $0.4844 up to $0.5813 [Member] | Unitholders [Member]
Incentive Distribution Made To Managing Member Or General Partner [Line Items]
Marginal Percentage Interest in Distributions	75.00%
Above $0.4844 up to $0.5813 [Member] | General Partner [Member]
Incentive Distribution Made To Managing Member Or General Partner [Line Items]
Marginal Percentage Interest in Distributions	25.00%
Above $0.5813 [Member] | Unitholders [Member]
Incentive Distribution Made To Managing Member Or General Partner [Line Items]
Marginal Percentage Interest in Distributions	50.00%
Above $0.5813 [Member] | General Partner [Member]
Incentive Distribution Made To Managing Member Or General Partner [Line Items]
Marginal Percentage Interest in Distributions	50.00%

Partners' Capital and Distrib50

Partners' Capital and Distributions - Percentage of Incentive Distribution Rights to Partnership's Unitholders and General Partner (Parenthetical) (Detail)	6 Months Ended
	Jun. 30, 2015$ / shares
Minimum [Member] | Above $0.3875 up to $0.4456 [Member]
Incentive Distribution Made To Managing Member Or General Partner [Line Items]
Cash distribution paid, per unit	$ 0.3875
Minimum [Member] | Above $0.4456 up to $0.4844 [Member]
Incentive Distribution Made To Managing Member Or General Partner [Line Items]
Cash distribution paid, per unit	0.4456
Minimum [Member] | Above $0.4844 up to $0.5813 [Member]
Incentive Distribution Made To Managing Member Or General Partner [Line Items]
Cash distribution paid, per unit	0.4844
Minimum [Member] | Above $0.5813 [Member]
Incentive Distribution Made To Managing Member Or General Partner [Line Items]
Cash distribution paid, per unit	0.5813
Maximum [Member] | Above $0.3875 up to $0.4456 [Member]
Incentive Distribution Made To Managing Member Or General Partner [Line Items]
Cash distribution paid, per unit	0.4456
Maximum [Member] | Above $0.4456 up to $0.4844 [Member]
Incentive Distribution Made To Managing Member Or General Partner [Line Items]
Cash distribution paid, per unit	0.4844
Maximum [Member] | Above $0.4844 up to $0.5813 [Member]
Incentive Distribution Made To Managing Member Or General Partner [Line Items]
Cash distribution paid, per unit	$ 0.5813

Equity Plans - Additional Infor

Equity Plans - Additional Information (Detail) - USD ($) $ / shares in Units, $ in Thousands	1 Months Ended	3 Months Ended		6 Months Ended
	Jul. 31, 2014	Jun. 30, 2015	Mar. 31, 2015	Jun. 30, 2015	Nov. 30, 2013
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Payments to phantom unit holders				$ 451
Employee Equity Grants Vest One
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Unrecognized unit-based compensation expense		$ 15,700		$ 15,700
Phantom Units
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Number of shares granted under the plan	939,500
Phantom Units | Directors Grant
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Vesting period				3 years
Unit-based compensation		200		$ 400
Unrecognized unit-based compensation expense		1,700		1,700
Employee Equity Grants
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Unit-based compensation		1,000		2,300
2015 Equity Grants
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Aggregate grant date fair value			$ 900
Vesting period			3 years
Unit-based compensation		100		100
Unrecognized unit-based compensation expense		800		800
2015 Performance Grants
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Aggregate grant date fair value		700
Unit-based compensation		100		100
Unrecognized unit-based compensation expense		700		700
2013 Long-Term Incentive Plan | Other non-current liabilities
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Unit-based compensation, liabilities		100		100
2013 Long-Term Incentive Plan | Selling, general and administrative
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Unit-based compensation		1,300		2,900
2013 Long-Term Incentive Plan | Employee Equity Grants Tranche One
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Employee equity grants vest percentage	25.00%
2013 Long-Term Incentive Plan | Employee Equity Grants Vest One
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Employee equity grants vest percentage	25.00%
Cash distribution received, per unit	$ 0.4457
2013 Long-Term Incentive Plan | Employee Equity Grants Vest Two
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Employee equity grants vest percentage	25.00%
Cash distribution received, per unit	$ 0.4845
2013 Long-Term Incentive Plan | Employee Equity Grants Vest Three
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Employee equity grants vest percentage	25.00%
Cash distribution received, per unit	$ 0.5814
2013 Long-Term Incentive Plan | Phantom Units
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Payments to phantom unit holders		400		800
2013 Long-Term Incentive Plan | Phantom Units | Directors Grant
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Number of shares granted under the plan	100,000
Aggregate grant date fair value	$ 2,500
2013 Long-Term Incentive Plan | Phantom Units Which Will Be Settled In Cash | Minimum [Member]
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Number of shares granted under the plan	1,000
2013 Long-Term Incentive Plan | Employee Equity Grants
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Aggregate grant date fair value	$ 21,200
Number of shares granted under the plan	832,000
2013 Long-Term Incentive Plan | Employee Liability Grants
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Aggregate grant date fair value	$ 200
Unit-based compensation		100		100
Unrecognized unit-based compensation expense		$ 100		100
Number of shares granted under the plan	7,500
2013 Long-Term Incentive Plan | 2015 Equity Grants
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Number of shares granted under the plan			45,668
2013 Long-Term Incentive Plan | 2015 Performance Grants
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Number of shares granted under the plan		38,600
2013 Long-Term Incentive Plan | Employee Equity Grants And Consultants
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Payments to phantom unit holders		$ 200		400
2013 Long-Term Incentive Plan | Employee Equity Grants And Consultants | Selling, general and administrative
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Unit-based compensation		$ 200		$ 400
Common Units [Member]
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Authorized					2,000,000

Equity Plans - Summary of Phant

Equity Plans - Summary of Phantom Units Granted (Detail) - $ / shares	6 Months Ended
	Jun. 30, 2015	Dec. 31, 2014
Equity Award [Member]
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Number of Phantom Units, Beginning Balance	928,500
Number of Phantom Units, Granted	84,268
Number of Phantom Units, Vested	0
Number of Phantom Units, Forfeited	(6,000)
Number of Phantom Units, Ending Balance	1,006,768
Weighted Avg. Grant Date Fair Value, Beginning Balance	$ 25.46
Weighted Avg. Grant Date Fair Value, Granted	19.16
Weighted Avg. Grant Date Fair Value, Forfeited	25.46
Weighted Avg. Grant Date Fair Value, Ending Balance	$ 24.93
Liability Award [Member]
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Number of Phantom Units, Beginning Balance	7,500
Number of Phantom Units, Granted	0
Number of Phantom Units, Vested	0
Number of Phantom Units, Forfeited	0
Number of Phantom Units, Ending Balance	7,500
Weighted Avg. Grant Date Fair Value, Beginning Balance	$ 25.46
Weighted Avg. Grant Date Fair Value, Ending Balance	25.46
Fair Value, Beginning Balance	$ 17.56	$ 17.56

Earnings Per Unit - Additional

Earnings Per Unit - Additional Information (Detail)	Jun. 30, 2015shares
Earnings Per Share [Abstract]
Number of Phantom units, outstanding	0

Earnings Per Unit - Schedule of

Earnings Per Unit - Schedule of Earnings Per Unit (Detail) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2015	Jun. 30, 2014	Jun. 30, 2015	Jun. 30, 2014
Earnings Per Share Diluted [Line Items]
Net Income	$ 2,188	$ 2,742	$ 2,494	$ 4,603
Less: Distribution equivalent rights for unissued units	231		466
Net income available to limited partners	1,957	2,742	2,028	4,603
Numerator for basic and diluted earnings per limited partner unit:
Net income available to limited partners	1,957	2,742	2,027	4,603
Common Units [Member]
Numerator for basic and diluted earnings per limited partner unit:
Net income available to limited partners	$ 1,841	$ 1,454	$ 1,876	$ 2,441
Denominator for basic and diluted earnings per limited partner unit:
Denominator for basic and diluted earnings per limited partner unit, basic and diluted	9,253	6,868	8,067	6,868
Earnings per limited partner unit:
Earnings per limited partner unit, basic and diluted	$ 0.20	$ 0.21	$ 0.23	$ 0.36
Subordinated Units [Member]
Numerator for basic and diluted earnings per limited partner unit:
Net income available to limited partners	$ 116	$ 1,288	$ 151	$ 2,162
Denominator for basic and diluted earnings per limited partner unit:
Denominator for basic and diluted earnings per limited partner unit, basic and diluted	6,081	6,081	6,081	6,081
Earnings per limited partner unit:
Earnings per limited partner unit, basic and diluted	$ 0.02	$ 0.21	$ 0.02	$ 0.36

Related Party Transactions - Ad

Related Party Transactions - Additional Information (Detail)

Feb. 19, 2015USD ($)$ / sharesshares

May. 31, 2013

May. 31, 2011

Feb. 28, 2010

May. 31, 2015USD ($)$ / shares

Jan. 31, 2014

Jun. 30, 2015USD ($)bbl

Jun. 30, 2014USD ($)

Jun. 30, 2015USD ($)Terminalsharesbbl

Jun. 30, 2014USD ($)

Dec. 31, 2014USD ($)

Feb. 28, 2013Boe

Related Party Transaction [Line Items]

Selling, general and administrative expenses-affiliate

$ 1,086,000

$ 1,056,000

$ 2,162,000

$ 1,940,000

Due to general partner

$ 1,658,000

$ 1,658,000

$ 409,000

Percentage of interest in general partner

100.00%

Issuance of common units, net of offering costs

$ 72,081,000

JBBR Acquisition [Member]

Related Party Transaction [Line Items]

Cash paid for Partnership acquired

$ 216,000,000

Proceeds from private placement

$ 72,700,000

JBBR Acquisition [Member] | Private Placement [Member]

Related Party Transaction [Line Items]

Price per unit of common units | $ / shares

$ 16.59

JBBR Acquisition [Member] | G E Energy Financial Services

Related Party Transaction [Line Items]

Business combination, equity interest in acquire percentage

40.00%

40.00%

JBBR Acquisition [Member] | Arc Logistics Partners LP [Member]

Related Party Transaction [Line Items]

Business combination, equity interest in acquire percentage

60.00%

60.00%

Arc Logistics GP LLC [Member]

Related Party Transaction [Line Items]

Selling, general and administrative expenses-affiliate

$ 1,100,000

1,100,000

$ 2,200,000

1,900,000

Due to general partner

1,700,000

$ 1,700,000

$ 400,000

Lightfoot Capital Partners LP And Lightfoot Capital Partners GPLLC [Member]

Related Party Transaction [Line Items]

Registration rights agreement

In connection with the IPO, the Partnership entered into a registration rights agreement with the Sponsor. Pursuant to the registration rights agreement, the Partnership is required to file, upon request of the Sponsor, a registration statement to register the common units issued to the Sponsor and the common units issuable upon the conversion of the subordinated units held by the Sponsor. In addition, the registration rights agreement gives the Sponsor piggyback registration rights under certain circumstances.

Limited partners capital units percentage

29.90%

Gulf Coast Asphalt Company, L.L.C. [Member]

Related Party Transaction [Line Items]

Partnership's Credit Facility

$ 20,000,000

$ 20,000,000

Number of barrels of storage tanks | Boe

150,000

Initial term of agreement

5 years

Center Oil [Member]

Related Party Transaction [Line Items]

Cash paid for Partnership acquired

$ 35,000,000

Number of terminals acquired | Terminal

7

Written notification for termination of agreement

The term of the storage and throughput agreement extends through June 2017. The agreement will automatically renew for a period of three years at the expiration of the current term at an inflation adjusted rate (subject to a cap), as determined in accordance with the agreement, unless a party delivers a written notice of its election to terminate the storage and throughput agreement at least eighteen months prior to the expiration of the current term.

Agreement extension, month and year

2017-06

Agreement renewal term

3 years

Center Oil [Member] | Limited Partners [Member]

Related Party Transaction [Line Items]

Partnership units issued on acquisition | shares

750,000

Limited Partners [Member] | Center Oil [Member]

Related Party Transaction [Line Items]

Agreement renewal term

1 year

1 year

Valuation percentage of assets at the time of acquisition

50.00%

Agreements extended month and year

2016-05

Agreement renewal, month and year

2015-05

Arc Terminals Holdings [Member]

Related Party Transaction [Line Items]

Lease agreement rent expenses

$ 230,000

Lease agreement rent expenses for future period

$ 417,522

Rent amount increase effective date

2014-08

Operating leases, Rent expense increased

$ 95,800

Number of barrels per day of oil equivalent | bbl

12,500

12,500

Percentage of variable rate on base rent

30.00%

Operating lease agreement expense

$ 1,600,000

$ 1,600,000

$ 3,200,000

$ 3,300,000

Arc Terminals Holdings [Member] | Portland Terminal [Member]

Related Party Transaction [Line Items]

Lease agreement rent expenses for future period

$ 65,700,000

Lease agreement notice period

So long as Arc Terminals Holdings is not in default under the Lease Agreement, it shall have the right to purchase the Portland Terminal at the end of the third year of the Lease Agreement and at the end of any month thereafter by delivery of 90 days’ notice (“Purchase Option”). The purchase price shall be the greater of (i) nine times the total of base rent and variable rent for the 12 months immediately preceding the notice and (ii) $65.7 million.

Operating lease termination notice

12 months

Arc Terminals Holdings [Member] | Fifth Anniversary [Member]

Related Party Transaction [Line Items]

Operating lease termination fee

$ 4,000,000

Arc Terminals Holdings [Member] | Tenth Anniversary [Member]

Related Party Transaction [Line Items]

Operating lease termination fee

$ 6,000,000

Arc Terminals Holdings [Member] | Minimum [Member]

Related Party Transaction [Line Items]

Percentage of change in the consumer price index

2.00%

Arc Terminals Holdings [Member] | LCP Oregon Holdings LLC [Member]

Related Party Transaction [Line Items]

Construction costs estimated

10,000,000

$ 10,000,000

Description of increase in base rent

increased each month starting with the month of August 2014 by a factor of 0.00958 of the specified construction costs incurred by LCP Oregon Holdings LLC (“LCP Oregon”) at the Portland Terminal

Arc Terminals Holdings [Member] | CorEnergy [Member]

Related Party Transaction [Line Items]

Operating leases, Rent expense increased

$ 84,000

Operating lease, additional spending

8,800,000

Arc Terminals Holdings [Member] | Lightfoot Capital Partners LP [Member]

Related Party Transaction [Line Items]

Percentage of investment in subsidiary

6.60%

Arc Terminals Holdings [Member] | Lightfoot Capital Partners GP LLC [Member]

Related Party Transaction [Line Items]

Percentage of investment in subsidiary

1.50%

Initial term of lease agreement

15 years

Additional term for lease agreement

5 years

Joliet Holding [Member]

Related Party Transaction [Line Items]

Fees and reimbursements

$ 400,000

$ 400,000

Investor [Member]

Related Party Transaction [Line Items]

Sale of common units in private placement, shares | shares

4,520,795

Proceeds from private placement

$ 72,700,000

Investor [Member] | MTP Energy Master Fund Ltd [Member]

Related Party Transaction [Line Items]

Sale of common units in private placement, shares | shares

572,635

Issuance of common units, net of offering costs

$ 9,500,000

Investor [Member] | Private Placement [Member]

Related Party Transaction [Line Items]

Price per unit of common units | $ / shares

$ 16.59

Private placement transaction due date

May 14, 2015

Related Party Transactions - Sc

Related Party Transactions - Schedule of Revenue from Related Parties (Detail) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2015	Jun. 30, 2014	Jun. 30, 2015	Jun. 30, 2014
Related Party Transaction [Line Items]
Related parties	$ 2,114	$ 2,054	$ 4,292	$ 4,392
Center Oil [Member]
Related Party Transaction [Line Items]
Related parties	1,661	1,581	3,390	3,466
Gulf Coast Asphalt Company, L.L.C. [Member]
Related Party Transaction [Line Items]
Related parties	$ 453	$ 473	$ 902	$ 926

Related Party Transactions - 57

Related Party Transactions - Schedule of Accounts Receivable due from Related Parties (Detail) - USD ($) $ in Thousands	Jun. 30, 2015	Dec. 31, 2014
Related Party Transaction [Line Items]
Due from related parties	$ 1,250	$ 900
Center Oil [Member]
Related Party Transaction [Line Items]
Due from related parties	953	594
Gulf Coast Asphalt Company, L.L.C. [Member]
Related Party Transaction [Line Items]
Due from related parties	$ 297	$ 306

Major Customers - Schedules of

Major Customers - Schedules of Percentages of Revenues and Receivables Associated with Significant Customers (Detail) - Customer Concentration Risk	3 Months Ended		6 Months Ended		12 Months Ended
	Jun. 30, 2015	Jun. 30, 2014	Jun. 30, 2015	Jun. 30, 2014	Dec. 31, 2014
Sales Revenue, Net [Member]
Entity Wide Revenue Major Customer [Line Items]
Total percentages of revenue and receivables associated with significant customers	52.00%	36.00%	46.00%	30.00%
Sales Revenue, Net [Member] | Customer A [Member]
Entity Wide Revenue Major Customer [Line Items]
Total percentages of revenue and receivables associated with significant customers	19.00%	23.00%	21.00%	16.00%
Sales Revenue, Net [Member] | Customer B [Member]
Entity Wide Revenue Major Customer [Line Items]
Total percentages of revenue and receivables associated with significant customers	9.00%	11.00%	10.00%	12.00%
Sales Revenue, Net [Member] | Customer C [Member]
Entity Wide Revenue Major Customer [Line Items]
Total percentages of revenue and receivables associated with significant customers	24.00%	2.00%	15.00%	2.00%
Receivables [Member]
Entity Wide Revenue Major Customer [Line Items]
Total percentages of revenue and receivables associated with significant customers			64.00%		43.00%
Receivables [Member] | Customer A [Member]
Entity Wide Revenue Major Customer [Line Items]
Total percentages of revenue and receivables associated with significant customers			14.00%		26.00%
Receivables [Member] | Customer B [Member]
Entity Wide Revenue Major Customer [Line Items]
Total percentages of revenue and receivables associated with significant customers			12.00%		13.00%
Receivables [Member] | Customer C [Member]
Entity Wide Revenue Major Customer [Line Items]
Total percentages of revenue and receivables associated with significant customers			38.00%		4.00%

Commitments and Contingencies -

Commitments and Contingencies - Additional Information (Detail)	6 Months Ended
	Jun. 30, 2015USD ($)Customer	May. 31, 2015USD ($)	Dec. 31, 2014USD ($)
Operating Leased Assets [Line Items]
Accruals for environmental losses	$ 0		$ 0
JBBR Acquisition [Member]
Operating Leased Assets [Line Items]
Earn-out payments	27,000,000	$ 19,700,000
Purchase price allocation, liability recorded	19,700,000
Business acquisition earnout payment	200,000
Gulf Coast Asphalt Company, L.L.C. [Member]
Operating Leased Assets [Line Items]
Earn-out payments	5,000,000
Earnout payments, low	$ 0
Number of customers | Customer	1
Gulf LNG Holdings [Member]
Operating Leased Assets [Line Items]
Capital call	$ 14,600,000
Partnership pro-rata share of committed capital	1,500,000
Partnership pro-rata share of remaining capital	$ 0
Gulf LNG Holdings [Member] | Maximum [Member]
Operating Leased Assets [Line Items]
Spending towards the development of natural gas liquefaction and export terminal			$ 14,600,000

Commitments and Contingencies60

Commitments and Contingencies - Schedule of Future Non-Cancelable Commitments Related to Certain Contractual Obligations (Detail) - USD ($) $ in Thousands	Jun. 30, 2015	Dec. 31, 2014
Commitments And Contingencies Disclosure [Abstract]
Long-term debt obligations, Total	$ 176,063	$ 111,063
Long-term debt obligations, 2015	0
Long-term debt obligations, 2016	0
Long-term debt obligations, 2017	0
Long-term debt obligations, 2018	176,063
Long-term debt obligations, 2019	0
Long-term debt obligations, thereafter	0
Operating lease obligations, Total	26,731
Operating lease obligations, 2015	3,198
Operating lease obligations, 2016	6,392
Operating lease obligations, 2017	6,261
Operating lease obligations, 2018	6,265
Operating lease obligations, 2019	4,615
Operating lease obligations, thereafter	0
Earn-out obligations, Total	19,521
Earn-out obligations, 2015	684
Earn-out obligations, 2016	1,369
Earn-out obligations, 2017	1,369
Earn-out obligations, 2018	1,369
Earn-out obligations, 2019	1,369
Earn-out obligations, thereafter	13,361
Contractual obligations, Total	222,315
Contractual obligations, 2015	3,882
Contractual obligations, 2016	7,761
Contractual obligations, 2017	7,630
Contractual obligations, 2018	183,697
Contractual obligations, 2019	5,984
Contractual obligations, thereafter	$ 13,361

Subsequent Events - Additional

Subsequent Events - Additional Information (Detail) - USD ($)	1 Months Ended	3 Months Ended						6 Months Ended
	Jul. 31, 2015	Sep. 30, 2015	Jun. 30, 2015	Mar. 31, 2015	Dec. 31, 2014	Sep. 30, 2014	Jun. 30, 2014	Jun. 30, 2015	Jun. 30, 2014	May. 31, 2015	Nov. 30, 2013
Subsequent Event [Line Items]
Cash distribution, total amount			$ 8,181,000	$ 5,309,000	$ 5,309,000	$ 5,309,000	$ 5,180,000
Total distribution per unit			$ 0.4250	$ 0.4100	$ 0.4100	$ 0.4100	$ 0.4000
Cash distribution payment date			Aug. 14, 2015	May 15, 2015	Feb. 17, 2015	Nov. 17, 2014	Aug. 18, 2014
Cash distribution date of record			Aug. 10, 2015	May 11, 2015	Feb. 9, 2015	Nov. 10, 2014	Aug. 11, 2014
Cash distributions paid to members								$ 10,618,000	$ 7,691,000
Credit Facility [Member]
Subsequent Event [Line Items]
Line of Credit Facility, amount			$ 275,000,000					$ 275,000,000		$ 275,000,000	$ 275,000,000
Subsequent Event [Member]
Subsequent Event [Line Items]
Cash distribution, declaration month and year	2015-07
Cash distribution, total amount	$ 8,181,000
Change in cash distribution percentage	3.70%
Cash distribution payment date	Aug. 14, 2015
Cash distribution date of record	Aug. 7, 2015
Subsequent Event [Member] | Joliet Holding [Member]
Subsequent Event [Line Items]
Cash distributions paid to members	$ 3,000,000
Subsequent Event [Member] | Arc Terminals Holdings [Member] | Joliet Holding [Member]
Subsequent Event [Line Items]
Cash distributions paid to members	1,200,000
Subsequent Event [Member] | Limited Partners [Member] | Joliet Holding [Member]
Subsequent Event [Line Items]
Cash distributions paid to members	$ 1,800,000
Subsequent Event [Member] | Quarterly Distribution [Member]
Subsequent Event [Line Items]
Total distribution per unit	$ 0.425	$ 0.41
Subsequent Event [Member] | Annual Distribution [Member]
Subsequent Event [Line Items]
Total distribution per unit	$ 1.70	$ 1.64
Subsequent Event [Member] | Credit Facility [Member]
Subsequent Event [Line Items]
Line of Credit Facility, amount	$ 300,000,000
Subsequent Event [Member] | Pawnee Terminal Acquisition [Member]
Subsequent Event [Line Items]
Total consideration	78,300,000
Business combination consideration transferred net of adjustment.	76,600,000
Cash paid to seller	44,300,000
Business acquisition, Equity interest issued, Value	$ 32,300,000
Business acquisition, Equity interest issued or issuable, Description	The number of common units issued to the Sellers at the closing of the Pawnee Terminal Acquisition was based upon an issuance price of $18.50 per unit, which resulted in the issuance of 1,745,669 of the Partnership’s common units.
Business acquisition, Share price	$ 18.50
Business acquisition, Equity interest issued or issuable, Number of shares	1,745,669