Transmontaigne Partners (TLP) 10-Q 9 May 18 2018 Q1 Quarterly report Financial data

Document and Entity Information

Document and Entity Information - shares	3 Months Ended
	Mar. 31, 2018	Apr. 30, 2018
Document and Entity Information
Entity Registrant Name	TransMontaigne Partners L.P.
Entity Central Index Key	1,319,229
Document Type	10-Q
Document Period End Date	Mar. 31, 2018
Amendment Flag	false
Current Fiscal Year End Date	--12-31
Entity Current Reporting Status	Yes
Entity Filer Category	Accelerated Filer
Entity Common Stock, Shares Outstanding		16,222,151
Document Fiscal Year Focus	2,018
Document Fiscal Period Focus	Q1

Consolidated balance sheets

Consolidated balance sheets - USD ($) $ in Thousands	Mar. 31, 2018	Dec. 31, 2017
Current assets:
Cash and cash equivalents	$ 937	$ 923
Trade accounts receivable, net	11,516	11,017
Due from affiliates	3,803	1,509
Other current assets	12,345	20,654
Total current assets	28,601	34,103
Property, plant and equipment, net	650,037	655,053
Goodwill	9,428	9,428
Investments in unconsolidated affiliates	234,030	233,181
Other assets, net	53,522	55,238
TOTAL ASSETS	975,618	987,003
Current liabilities:
Trade accounts payable	9,645	8,527
Accrued liabilities	17,653	17,426
Total current liabilities	27,298	25,953
Other liabilities	3,921	3,633
Long-term debt	582,377	593,200
Total liabilities	613,596	622,786
Commitments and contingencies (Note 16)
Partners’ equity:
Common unitholders (16,200,485 units issued and outstanding at March 31, 2018 and 16,177,353 units issued and outstanding at December 31, 2017)	308,396	310,769
General partner interest (2% interest with 330,613 equivalent units outstanding at March 31, 2018 and 330,150 equivalent units outstanding at December 31, 2017)	53,626	53,448
Total partners’ equity	362,022	364,217
TOTAL LIABILITIES AND EQUITY	$ 975,618	$ 987,003

Consolidated balance sheets (Pa

Consolidated balance sheets (Parenthetical) - shares	3 Months Ended	12 Months Ended
	Mar. 31, 2018	Dec. 31, 2017
Consolidated balance sheets
Common unitholders, units issued	16,200,485	16,177,353
Common unitholders, units outstanding	16,200,485	16,177,353
General partner interest (as a percent)	2.00%	2.00%
General partner interest, equivalent units outstanding	330,613	330,150

Consolidated statements of oper

Consolidated statements of operations - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2018	Mar. 31, 2017
Revenue:
Total revenue	$ 56,444	$ 44,850
Operating costs and expenses
Direct operating costs and expenses	(20,145)	(16,511)
General and administrative expenses	(4,981)	(3,971)
Insurance expenses	(1,246)	(1,006)
Equity-based compensation expense	(2,017)	(1,817)
Depreciation and amortization	(11,808)	(8,705)
Total operating costs and expenses	(40,197)	(32,010)
Earnings from unconsolidated affiliates	2,889	2,560
Operating income	19,136	15,400
Other expenses:
Interest expense	(6,461)	(2,152)
Amortization of deferred financing costs	(501)	(294)
Total other expenses	(6,962)	(2,446)
Net earnings	12,174	12,954
Less-earnings allocable to general partner interest including incentive distribution rights	(3,766)	(2,843)
Net earnings allocable to limited partners	$ 8,408	$ 10,111
Net earnings per limited partner unit-basic (in dollars per unit)	$ 0.52	$ 0.62
Net earnings per limited partner unit-diluted (in dollars per unit)	$ 0.52	$ 0.62
External customers (excluding affiliates)
Revenue:
Total revenue	$ 52,114	$ 43,080
Affiliates
Revenue:
Total revenue	$ 4,330	$ 1,770

Consolidated statements of part

Consolidated statements of partners' equity - USD ($) $ in Thousands	Common units	General partner interest	Total
Balance at Dec. 31, 2016	$ 320,042	$ 52,692	$ 372,734
Increase (Decrease) in Partners' Capital
Distributions to unitholders	(47,349)	(11,985)	(59,334)
Equity-based compensation	2,729		2,729
Issuance of common units pursuant to our long-term incentive plan	270		270
Settlement of tax withholdings on equity-based compensation	(711)		(711)
Contribution of cash by TransMontaigne GP to maintain its 2% general partner interest		36	36
Net earnings	35,788	12,705	48,493
Balance at Dec. 31, 2017	310,769	53,448	364,217
Increase (Decrease) in Partners' Capital
Distributions to unitholders	(12,457)	(3,606)	(16,063)
Equity-based compensation	2,017		2,017
Settlement of tax withholdings on equity-based compensation	(341)		(341)
Contribution of cash by TransMontaigne GP to maintain its 2% general partner interest		18	18
Net earnings	8,408	3,766	12,174
Balance at Mar. 31, 2018	$ 308,396	$ 53,626	$ 362,022

Consolidated statements of par6

Consolidated statements of partners' equity (Parenthetical) - shares	3 Months Ended	12 Months Ended
	Mar. 31, 2018	Dec. 31, 2017
Consolidated statements of partners' equity
Issuance of common units pursuant to our long-term incentive plan (in units)		6,498
Issuance of common units pursuant to our savings and retention program (in units)	23,132	33,205
General partner interest (as a percent)	2.00%	2.00%

Consolidated statements of cash

Consolidated statements of cash flows - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2018	Mar. 31, 2017
Cash flows from operating activities:
Net earnings	$ 12,174	$ 12,954
Adjustments to reconcile net earnings to net cash provided by operating activities:
Depreciation and amortization	11,808	8,705
Earnings from unconsolidated affiliates	(2,889)	(2,560)
Distributions from unconsolidated affiliates	3,190	4,349
Equity-based compensation	2,017	1,817
Amortization of deferred financing costs	501	294
Amortization of deferred revenue	(187)	(51)
Unrealized (gain) loss on derivative instruments	42	(258)
Changes in operating assets and liabilities, net of effects from acquisitions and dispositions:
Trade accounts receivable, net	2	220
Due from affiliates	(2,294)	(310)
Other current assets	(1,799)	1,716
Amounts due under long-term terminaling services agreements, net	28	(98)
Deposits		54
Trade accounts payable	1,574	864
Accrued liabilities	227	2,667
Net cash provided by operating activities	24,394	30,363
Cash flows from investing activities:
Investments in unconsolidated affiliates	(1,150)	(2,000)
Capital expenditures	(6,503)	(9,500)
Proceeds from sale of assets	10,025
Net cash provided by (used in) investing activities	2,372	(11,500)
Cash flows from financing activities:
Proceeds from senior notes	300,000
Borrowings of debt under credit facility	46,600	46,000
Repayments of debt under credit facility	(349,600)	(45,300)
Deferred issuance costs	(7,366)	(5,068)
Settlement of tax withholdings on equity-based compensation	(341)	(382)
Distributions paid to unitholders	(16,063)	(14,087)
Contribution of cash by TransMontaigne GP	18	22
Net cash used in financing activities	(26,752)	(18,815)
Increase in cash and cash equivalents	14	48
Cash and cash equivalents at beginning of period	923	593
Cash and cash equivalents at end of period	937	641
Supplemental disclosures of cash flow information:
Cash paid for interest	4,366	2,217
Property, plant and equipment acquired with accounts payable	$ 2,752	$ 7,515

SUMMARY OF SIGNIFICANT ACCOUNTI

SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES	3 Months Ended
	Mar. 31, 2018
SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES
SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES	(1) SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (a) Nature of business TransMontaigne Partners L.P. (“we,” “us,” “our,” “the Partnership”) was formed in February 2005 as a Delaware limited partnership. We provide integrated terminaling, storage, transportation and related services for companies engaged in the trading, distribution and marketing of light refined petroleum products, heavy refined petroleum products, crude oil, chemicals, fertilizers and other liquid products. We conduct our operations in the United States along the Gulf Coast, in the Midwest, in Houston and Brownsville, Texas, along the Mississippi and Ohio rivers, in the Southeast and along the West Coast. We are controlled by our general partner, TransMontaigne GP L.L.C. (“TransMontaigne GP”), which as of February 1, 2016 is a wholly‑owned indirect subsidiary of ArcLight Energy Partners Fund VI, L.P. (“ArcLight”). (b) Basis of presentation and use of estimates Our accounting and financial reporting policies conform to accounting principles generally accepted in the United States of America (“GAAP”). The accompanying consolidated financial statements include the accounts of TransMontaigne Partners L.P. and its controlled subsidiaries. Investments where we do not have the ability to exercise control, but do have the ability to exercise significant influence, are accounted for using the equity method of accounting. All inter‑company accounts and transactions have been eliminated in the preparation of the accompanying consolidated financial statements. The accompanying consolidated financial statements include all adjustments (consisting of normal and recurring accruals) considered necessary to present fairly our financial position as of March 31, 2018 and December 31, 2017 and our results of operations for the three months ended March 31, 2018 and 2017. Certain reclassifications of previously reported amounts have been made to conform to the current year presentation. The preparation of financial statements in conformity with “GAAP” requires us to make estimates and assumptions that affect the reported amounts of assets and liabilities and disclosure of contingent assets and liabilities at the date of the financial statements, and the reported amounts of revenue and expenses during the reporting periods. The following estimates, in management’s opinion, are subjective in nature, require the exercise of judgment, and/or involve complex analyses: business combination estimates and assumptions, useful lives of our plant and equipment and accrued environmental obligations. Changes in these estimates and assumptions will occur as a result of the passage of time and the occurrence of future events. Actual results could differ from these estimates. (c) Accounting for terminal and pipeline operations Effective January 1, 2018, we adopted Accounting Standards Codification (“ASC”) Topic 606, Revenue from Contracts with Customers (“ASC 606”), applying the modified retrospective transition method, which required us to apply the new standard to (i) all new revenue contracts entered into after January 1, 2018, and (ii) revenue contracts which were not completed as of January 1, 2018. ASC 606 replaces existing revenue recognition requirements in GAAP and requires entities to recognize revenue at an amount that reflects the consideration to which we expect to be entitled in exchange for transferring goods or services to a customer. ASC 606 also requires certain disclosures regarding qualitative and quantitative information regarding the nature, amount, timing, and uncertainty of revenue and cash flows arising from contracts with customers. The adoption of ASC 606 did not result in a transition adjustment nor did it have an impact on the timing or amount of our revenue recognition (See Note 18 of Notes to consolidated financial statements). The adoption of ASC 606 did not result in changes to our accounting for trade accounts receivable (see Note 4 of the Notes to the consolidated financial statements), contract assets or contract liabilities. Contract assets primarily relate to our rights to consideration from completed performance obligations but not billable at the reporting date. We recognize contract assets in situations where revenue recognition under ASC 606 occurs prior to billing the customer based on our rights under the contract. Contract assets are transferred to accounts receivable when the rights become unconditional. At March 31, 2018, we did not have any contract assets related to ASC 606. Contract liabilities primarily relate to consideration received from customers in advance of completing the performance obligation. We recognize contract liabilities under these arrangements as revenue once all contingencies or potential performance obligations have been satisfied by the (i) performance of services or (ii) expiration of the customer’s rights under the contract. Short-term contract liabilities include customer advances and deposits (see Note 10 of the Notes to the consolidated financial statements). Long-term contract liabilities include deferred revenue related to ethanol blending fees and other projects (See Note 11 of Notes to the consolidated financial statements). We generate revenue from terminaling services fees, pipeline transportation fees and management fees. Under ASC 606, we recognize revenue over time or at a point in time, depending on the nature of the performance obligations contained in the respective contract with our customer. A performance obligation is a promise in a contract to transfer goods or services to the customer. The contract transaction price is allocated to each performance obligation and recognized as revenue when, or as, the performance obligation is satisfied. The majority of our revenue is recognized pursuant to ASC guidance other than ASC 606. The following is an overview of our significant revenue streams, including a description of the respective performance obligations and related method of revenue recognition. Terminaling services fees. Our terminaling services agreements are structured as either throughput agreements or storage agreements. Our throughput agreements contain provisions that require our customers to make minimum payments, which are based on contractually established minimum volumes of throughput of the customer’s product at our facilities over a stipulated period of time. Due to this minimum payment arrangement, we recognize a fixed amount of revenue from the customer over a certain period of time, even if the customer throughputs less than the minimum volume of product during that period. In addition, if a customer throughputs a volume of product exceeding the minimum volume, we would recognize additional revenue on this incremental volume. Our storage agreements require our customers to make minimum payments based on the volume of storage capacity available to the customer under the agreement, which results in a fixed amount of recognized revenue. The majority of our firm commitments under our terminaling services agreements are accounted for in accordance with ASC 840, Leases (“”ASC 840 revenue”). The remainder is recognized in accordance with ASC 606 (“ASC 606 revenue”) where the minimum payment arrangement in each contract is a single performance obligation that is primarily satisfied over time through the contract term. Revenue recognized in excess of firm commitments and revenue recognized based solely on the volume of product distributed or injected are referred to as ancillary. The ancillary revenue associated with terminaling services include injection fees based on the volume of product injected with additive compounds, net product gained resulting from differences in measurement of product volumes received and distributed at our terminaling facilities, services including heating and mixing of stored product, butane blending and volumes of product throughput that exceed the contractually established minimum volumes. The revenue generated by these services is primarily considered optional purchases to acquire additional services or variable consideration that is required to be estimated under ASC 606 for any uncertainty that is not resolved in the period of the service. We account for the majority of ancillary revenue at individual points in time when the services are delivered to the customer. Ancillary revenue is recognized as ASC 606 revenue. Pipeline transportation fees. We earn pipeline transportation fees at our Diamondback pipeline either based on the volume of product transported or under capacity reservation agreements. Revenue associated with the capacity reservation is recognized ratably over the respective term, regardless of whether the capacity is actually utilized. We earn pipeline transportation fees at our Razorback pipeline based on an allocation of the aggregate fees charged under the capacity agreement with our customer who has contracted for 100% of our Razorback system. For the three months ended March 31, 2018, pipeline transportation revenue is primarily accounted for as ASC 840 revenue. Management fees. We manage and operate certain tank capacity at our Port Everglades South terminal for a major oil company and receive a reimbursement of its proportionate share of operating and maintenance costs. We manage and operate the Frontera joint venture and receive a management fee based on our costs incurred. We also currently manage and operate for an affiliate of PEMEX, Mexico’s state-owned petroleum company, a bi-directional products pipeline connected to our Brownsville terminal facility and receive a management fee. We manage and operate rail sites at certain Southeast terminals on behalf of a major oil company and receive reimbursement for operating and maintenance costs. Management fee revenue is recognized at individual points in time as the services are performed or as the costs are incurred. This revenue is primarily accounted for as ASC 606 revenue. (d) Cash and cash equivalents We consider all short‑term investments with a remaining maturity of three months or less at the date of purchase to be cash equivalents. (e) Property, plant and equipment Depreciation is computed using the straight‑line method. Estimated useful lives are 15 to 25 years for terminals and pipelines and 3 to 25 years for furniture, fixtures and equipment. All items of property, plant and equipment are carried at cost. Expenditures that increase capacity or extend useful lives are capitalized. Repairs and maintenance are expensed as incurred. We evaluate long‑lived assets for impairment whenever events or changes in circumstances indicate that the carrying value of an asset group may not be recoverable based on expected undiscounted future cash flows attributable to that asset group. If an asset group is impaired, the impairment loss to be recognized is the excess of the carrying amount of the asset group over its estimated fair value. (f) Investments in unconsolidated affiliates We account for our investments in unconsolidated affiliates, which we do not control but do have the ability to exercise significant influence over, using the equity method of accounting. Under this method, the investment is recorded at acquisition cost, increased by our proportionate share of any earnings and additional capital contributions and decreased by our proportionate share of any losses, distributions received and amortization of any excess investment. Excess investment is the amount by which our total investment exceeds our proportionate share of the book value of the net assets of the investment entity. We evaluate our investments in unconsolidated affiliates for impairment whenever events or circumstances indicate there is a loss in value of the investment that is other than temporary. In the event of impairment, we would record a charge to earnings to adjust the carrying amount to estimated fair value. (g) Environmental obligations We accrue for environmental costs that relate to existing conditions caused by past operations when probable and reasonably estimable (see Note 10 of Notes to consolidated financial statements). Environmental costs include initial site surveys and environmental studies of potentially contaminated sites, costs for remediation and restoration of sites determined to be contaminated and ongoing monitoring costs, as well as fines, damages and other costs, including direct legal costs. Liabilities for environmental costs at a specific site are initially recorded, on an undiscounted basis, when it is probable that we will be liable for such costs, and a reasonable estimate of the associated costs can be made based on available information. Such an estimate includes our share of the liability for each specific site and the sharing of the amounts related to each site that will not be paid by other potentially responsible parties, based on enacted laws and adopted regulations and policies. Adjustments to initial estimates are recorded, from time to time, to reflect changing circumstances and estimates based upon additional information developed in subsequent periods. Estimates of our ultimate liabilities associated with environmental costs are difficult to make with certainty due to the number of variables involved, including the early stage of investigation at certain sites, the lengthy time frames required to complete remediation, technology changes, alternatives available and the evolving nature of environmental laws and regulations. We periodically file claims for insurance recoveries of certain environmental remediation costs with our insurance carriers under our comprehensive liability policies (see Note 5 of Notes to consolidated financial statements). We recognize our insurance recoveries as a credit to income in the period that we assess the likelihood of recovery as being probable. In connection with our previous acquisitions of certain terminals from TransMontaigne LLC, a wholly owned subsidiary of NGL Energy Partners LP and the previous owner of our general partner, TransMontaigne LLC agreed to indemnify us against certain potential environmental claims, losses and expenses at those terminals. Pursuant to the acquisition agreements for each of the Florida (except Pensacola) and Midwest terminals, the Southeast terminals, the Brownsville and the River terminals, and the Pensacola, Florida Terminal, TransMontaigne LLC is obligated to indemnify us against environmental claims, losses and expenses that were associated with the ownership or operation of the terminals prior to the purchase by the Partnership. In each acquisition agreement, TransMontaigne LLC’s maximum indemnification liability is subject to a specified time period for indemnification, cap on indemnification and satisfaction of a deductible amount before indemnification, in each case subject to certain exceptions, limitations and conditions specified therein. TransMontaigne LLC has no indemnification obligations with respect to environmental claims made as a result of additions to or modifications of environmental laws promulgated after certain specified dates. The environmental indemnification obligations of TransMontaigne LLC to us remain in place and were not affected by ArcLight’s acquisition of our general partner on February 1, 2016. (h) Asset retirement obligations Asset retirement obligations are legal obligations associated with the retirement of long‑lived assets that result from the acquisition, construction, development or normal use of the asset. Generally accepted accounting principles require that the fair value of a liability related to the retirement of long‑lived assets be recorded at the time a legal obligation is incurred. Once an asset retirement obligation is identified and a liability is recorded, a corresponding asset is recorded, which is depreciated over the remaining useful life of the asset. After the initial measurement, the liability is adjusted to reflect changes in the asset retirement obligation. If and when it is determined that a legal obligation has been incurred, the fair value of any liability is determined based on estimates and assumptions related to retirement costs, future inflation rates and interest rates. Our long‑lived assets consist of above‑ground storage facilities and underground pipelines. We are unable to predict if and when these long‑lived assets will become completely obsolete and require dismantlement. We have not recorded an asset retirement obligation, or corresponding asset, because the future dismantlement and removal dates of our long‑lived assets is indeterminable and the amount of any associated costs are believed to be insignificant. Changes in our assumptions and estimates may occur as a result of the passage of time and the occurrence of future events. (i) Equity-based compensation Generally accepted accounting principles require us to measure the cost of services received in exchange for an award of equity instruments based on the measurement‑date fair value of the award. That cost is recognized during the period services are provided in exchange for the award (see Note 14 of Notes to consolidated financial statements). (j) Accounting for derivative instruments Generally accepted accounting principles require us to recognize all derivative instruments at fair value in the consolidated balance sheets as assets or liabilities (see Notes 5 and 9 of Notes to consolidated financial statements). Changes in the fair value of our derivative instruments are recognized in earnings. At March 31, 2018 and December 31, 2017, our derivative instruments were limited to interest rate swap agreements with an aggregate notional amount of $50.0 million and $125.0 million, respectively. At March 31, 2018 the remaining derivative instrument expires March 11, 2019. Pursuant to the terms of the interest rate swap agreements, we paid a blended fixed rate of approximately 0.97% and 1.01% for the three months ended March 31, 2018 and 2017, respectively, and received interest payments based on the one-month LIBOR. The net difference to be paid or received under the interest rate swap agreements is settled monthly and is recognized as an adjustment to interest expense. The fair value of our interest rate swap agreements are determined using a pricing model based on the LIBOR swap rate and other observable market data. (k) Income taxes No provision for U.S. federal income taxes has been reflected in the accompanying consolidated financial statements because we are treated as a partnership for federal income tax purposes. As a partnership, all income, gains, losses, expenses, deductions and tax credits generated by us flow through to our unitholders. (l) Net earnings per limited partner unit Net earnings allocable to the limited partners, for purposes of calculating net earnings per limited partner unit, are calculated under the two-class method and accordingly are net of the earnings allocable to the general partner interest and distributions payable to any restricted phantom units granted under our equity-based compensation plans that participate in our distributions. The earnings allocable to the general partner interest include the distributions of available cash (as defined by our partnership agreement) attributable to the period to the general partner interest, net of adjustments for the general partner’s share of undistributed earnings, and the incentive distribution rights. Undistributed earnings are the difference between the earnings and the distributions attributable to the period. Undistributed earnings are allocated to the limited partners and general partner interest based on their respective sharing of earnings or losses specified in the partnership agreement, which is based on their ownership percentages of 98% and 2%, respectively. The incentive distribution rights are not allocated a portion of the undistributed earnings given they are not entitled to distributions other than from available cash. Further, the incentive distribution rights do not share in losses under our partnership agreement. Basic net earnings per limited partner unit is computed by dividing net earnings allocable to the limited partners by the weighted average number of limited partner units outstanding during the period. Diluted net earnings per limited partner unit is computed by dividing net earnings allocable to the limited partners by the weighted average number of limited partner units outstanding during the period and any potential dilutive securities outstanding during the period. (m) Comprehensive income Entities that report items of other comprehensive income have the option to present the components of net earnings and comprehensive income in either one continuous financial statement, or two consecutive financial statements. As the Partnership has no components of comprehensive income other than net earnings, no statement of comprehensive income has been presented. (n) Recent accounting pronouncements Effective January 1, 2018 we adopted ASU 2016-15, Statement of Cash Flows: Classification of Certain Cash Receipt and Cash Payments. This ASU requires changes in the presentation of certain items, including but not limited to debt prepayment or debt extinguishment costs; contingent consideration payments made after a business combination; proceeds from the settlement of insurance claims; proceeds from the settlement of corporate-owned life insurance policies and distributions received from equity method investees. The adoption of this ASU did not have a material impact on our unaudited consolidated financial statements. In February 2016, the FASB issued ASU 2016-02, Leases. The objective of this update is to improve financial reporting about leasing transactions. ASU 2016-02 is effective for annual reporting periods beginning after December 15, 2018, including interim periods within that reporting period. We are currently evaluating the potential impact that the adoption will have on our disclosures and financial statements. Additionally, we are in the process of evaluating and designing the necessary changes to our business processes, systems and controls to support recognition and disclosure under the new standard. In January 2017, the FASB issued ASU 2017-04, Intangibles-Goodwill and Other: Simplifying the Test for Goodwill Impairment, to simplify the accounting for goodwill impairment by eliminating step 2 from the goodwill impairment test. ASU 2017-04 is effective for annual reporting periods beginning after December 15, 2019, including interim periods within that reporting period. We are currently evaluating the potential impact that the adoption will have on our disclosures and financial statements.

TRANSACTIONS WITH AFFILIATES

TRANSACTIONS WITH AFFILIATES	3 Months Ended
	Mar. 31, 2018
TRANSACTIONS WITH AFFILIATES
TRANSACTIONS WITH AFFILIATES	(2) TRANSACTIONS WITH AFFILIATES Third Amended and Restated Omnibus Agreement. Since the inception of the Partnership in 2005 we have been party to an omnibus agreement with the owner of our general partner, which agreement has been amended and restated from time to time. The omnibus agreement provides for the provision of various services for our benefit. The fees payable under the omnibus agreement to the owner of our general partner are comprised of (i) the reimbursement of the direct operating costs and expenses, such as salaries and benefits of operational personnel performing services on site at our terminals and pipelines, which we refer to as on-site employees, (ii) bonus awards to key personnel who perform services for the Partnership, which are typically paid in the Partnership’s units and are subject to the approval by the compensation committee and the conflicts committee of our general partner, and (iii) the administrative fee for the provision of various general and administrative services for the Partnership’s benefit such as legal, accounting, treasury, insurance administration and claims processing, information technology, human resources, credit, payroll, taxes, engineering, environmental safety and occupational health (ESOH) and other corporate services, to the extent such services are not outsourced by the Partnership. The administrative fee is recognized as a component of general and administrative expenses and for the three months ended March 31, 2018 and 2017 was approximately $3.4 million and $2.9 million, respectively. In accordance with the Second Amended and Restated Omnibus Agreement and the prior versions thereto, if we acquired or constructed additional facilities, the owner of our general partner may propose a revised administrative fee covering the provision of services for such additional facilities, subject to the approval by the conflicts committee of our general partner. In connection with our previously discussed Phase II buildout at our Collins terminal, the expansion of our Brownsville terminal and pipeline operations and the December 2017 acquisition of the West Coast terminals, on May 7, 2018, the Partnership, with the concurrence of the conflicts committee of our general partner, agreed to an annual increase in the aggregate fees payable to the owner of the general partner under the omnibus agreement of $3.6 million beginning May 13, 2018. To effectuate this $3.6 million annual increase in the aggregate fees payable to the owner of the general partner, on May 7, 2018 the Partnership, with the concurrence of the conflicts committee of our general partner, entered into the Third Amended and Restated Omnibus Agreement by and among the Partnership, our general partner, TransMontaigne Operating GP L.L.C., TransMontaigne Operating Company L.P., Gulf TLP Holdings, LLC, and TLP Management Services LLC. The effect of the change to the omnibus agreement is to allow the Partnership to assume the costs and expenses of personnel performing engineering and ESOH services for and on behalf of the Partnership and to receive an equal and offsetting decrease in the administrative fee. These costs and expenses are expected to approximate $8.9 million in 2018. We expect that a significant portion of the assumed engineering costs will be capitalized under generally accepted accounting principles. Prior to the $3.6 million annual increase and the effective date of the Third Amended and Restated Omnibus Agreement, the annual administrative fee was approximately $13.7 million and included the costs and expenses of the personnel performing engineering and ESOH services. Subsequent to the $3.6 million annual increase and the effective date of the Third Amended and Restated Omnibus Agreement, the annual administrative fee will be approximately $8.4 million and the Partnership will bear the approximately $8.9 million costs and expenses of the personnel performing engineering and ESOH services for and on behalf of the Partnership. The administrative fee under the Third Amended and Restated Omnibus Agreement is subject to an increase each calendar year tied to an increase in the consumer price index, if any, plus two percent. If we acquire or construct additional facilities, the owner of our general partner may propose a revised administrative fee covering the provision of services for such additional facilities, subject to approval by the conflicts committee of our general partner. We do not directly employ any of the persons responsible for managing our business. We are managed by our general partner, and all of the officers of our general partner and employees who provide services to the Partnership are employed by TLP Management Services, a wholly owned subsidiary of ArcLight. TLP Management Services provides payroll and maintains all employee benefits programs on behalf of our general partner and the Partnership pursuant to the omnibus agreement. The omnibus agreement will continue in effect until the earlier of (i) ArcLight ceasing to control our general partner or (ii) the election of either us or the owner, following at least 24 months’ prior written notice to the other parties. Operations and reimbursement agreement—Frontera. We have a 50% ownership interest in the Frontera Brownsville LLC joint venture, or (Frontera). We operate Frontera, in accordance with an operations and reimbursement agreement executed between us and Frontera, for a management fee that is based on our costs incurred. Our agreement with Frontera stipulates that we may resign as the operator at any time with the prior written consent of Frontera, or that we may be removed as the operator for good cause, which includes material noncompliance with laws and material failure to adhere to good industry practice regarding health, safety or environmental matters. We recognized revenue related to this operations and reimbursement agreement of approximately $1.5 million and $1.4 million for the three months ended March 31, 2018 and 2017, respectively. Terminaling services agreements—Brownsville terminals. We have terminaling services agreements with Frontera relating to our Brownsville, Texas facility that will expire in June 2019 and June 2020, subject to automatic renewals unless terminated by either party upon 90 days’ and 180 days’ prior notice, respectively. In exchange for its minimum throughput commitments, we have agreed to provide Frontera with approximately 301,000 barrels of storage capacity. We recognized revenue related to these agreements of approximately $0.6 million and $0.3 million for the three months ended March 31, 2018 and 2017, respectively. Terminaling services agreement—Gulf Coast terminals. Associated Asphalt Marketing, LLC is a wholly-owned indirect subsidiary of ArcLight. In January 2018, we entered into a terminaling services agreement with Associated Asphalt Marketing, LLC relating to our Gulf Coast terminals that will expire in April 2021, subject to two, two-year automatic renewals unless terminated by either party upon 180 days’ prior notice. In exchange for its minimum throughput commitment, we have agreed to provide Associated Asphalt Marketing, LLC with approximately 750,000 barrels of storage capacity previously contracted to a third party. We recognized revenue related to this agreement of approximately $2.2 million and $nil for the three months ended March 31, 2018 and 2017, respectively.

BUSINESS COMBINATION AND TERMIN

BUSINESS COMBINATION AND TERMINAL ACQUISITION AND DISPOSITION	3 Months Ended
	Mar. 31, 2018
BUSINESS COMBINATION AND TERMINAL ACQUISITION AND DISPOSITION
BUSINESS COMBINATION AND TERMINAL ACQUISITION AND DISPOSITION	(3) BUSINESS COMBINATION, TERMINAL ACQUISITION AND DISPOSITION On December 15, 2017, we acquired the West Coast terminals from a third party for a total purchase price of $276.8 million. The West Coast terminals consist of two waterborne refined product and crude oil terminals located in the San Francisco Bay Area refining complex including a total of 64 storage tanks with approximately 5.0 million barrels of active storage capacity. The West Coast terminals have access to domestic and international crude oil and refined products markets through marine, pipeline, truck and rail logistics capabilities. The accompanying consolidated financial statements include the assets, liabilities and results of operations of the West Coast terminals from December 15, 2017. The purchase price and final assessment of the fair value of the assets acquired and liabilities assumed in the business combination were as follows (in thousands): Other current assets $ 1,037 Property, plant and equipment 228,000 Goodwill 943 Customer relationships 47,000 Total assets acquired 276,980 Environmental obligation 220 Total liabilities assumed 220 Allocated purchase price $ 276,760 Goodwill represents the excess of the consideration paid for the acquired business over the fair value of the individual assets acquired, net of liabilities assumed. Goodwill represents the premium we paid to acquire the skilled workforce. On February 20, 2018 we closed on the purchase of certain assets from a third party. Concurrently we sold these assets to another third party for cash proceeds equal to our purchase price plus expenses.

CONCENTRATION OF CREDIT RISK AN

CONCENTRATION OF CREDIT RISK AND TRADE ACCOUNTS RECEIVABLE	3 Months Ended
	Mar. 31, 2018
CONCENTRATION OF CREDIT RISK AND TRADE ACCOUNTS RECEIVABLE
CONCENTRATION OF CREDIT RISK AND TRADE ACCOUNTS RECEIVABLE	(4) CONCENTRATION OF CREDIT RISK AND TRADE ACCOUNTS RECEIVABLE Our primary market areas are located in the United States along the Gulf Coast, in the Southeast, in Brownsville, Texas, along the Mississippi and Ohio Rivers, in the Midwest and along the West Coast. We have a concentration of trade receivable balances due from companies engaged in the trading, distribution and marketing of refined products and crude oil. These concentrations of customers may affect our overall credit risk in that the customers may be similarly affected by changes in economic, regulatory or other factors. Our customers’ historical financial and operating information is analyzed prior to extending credit. We manage our exposure to credit risk through credit analysis, credit approvals, credit limits and monitoring procedures, and for certain transactions we may request letters of credit, prepayments or guarantees. Amounts included in trade accounts receivable that are accounted for as ASC 606 revenue in accordance with ASC 606 approximates $3.4 million at March 31, 2018. We maintain allowances for potentially uncollectible accounts receivable. Trade accounts receivable, net consists of the following (in thousands): March 31, December 31, 2018 2017 Trade accounts receivable $ 11,625 $ 11,128 Less allowance for doubtful accounts (109) (111) $ 11,516 $ 11,017 The following customers accounted for at least 10% of our consolidated revenue in at least one of the periods presented in the accompanying consolidated statements of operations: Three months ended March 31, 2018 2017 NGL Energy Partners LP 22 % 26 % Castleton Commodities International LLC 11 % 13 % RaceTrac Petroleum Inc. 11 % 12 %

OTHER CURRENT ASSETS

OTHER CURRENT ASSETS	3 Months Ended
	Mar. 31, 2018
OTHER CURRENT ASSETS
OTHER CURRENT ASSETS	(5) OTHER CURRENT ASSETS Other current assets are as follows (in thousands): March 31, December 31, 2018 2017 Prepaid insurance $ 3,997 $ 4,151 Amounts due from insurance companies 1,933 1,981 Additive detergent 1,730 1,715 Unrealized gain on derivative instrument 534 — Deposits and other assets 4,151 12,807 $ 12,345 $ 20,654 Amounts due from insurance companies. We periodically file claims for recovery of environmental remediation costs with our insurance carriers under our comprehensive liability policies. We recognize our insurance recoveries in the period that we assess the likelihood of recovery as being probable (i.e., likely to occur). At March 31, 2018 and December 31, 2017, we have recognized amounts due from insurance companies of approximately $1.9 million and $2.0 million, respectively, representing our best estimate of our probable insurance recoveries. During the three months ended March 31, 2018, we received reimbursements from insurance companies of approximately $0.1 million. Deposits and other assets. At December 31, 2017, Deposits and other assets includes a deposit of approximately $10.2 million paid during the fourth quarter 2017 related to expansion opportunities that closed in the first quarter of 2018 (See Note 3 of Notes to consolidated financial statements).

PROPERTY, PLANT AND EQUIPMENT,

PROPERTY, PLANT AND EQUIPMENT, NET	3 Months Ended
	Mar. 31, 2018
PROPERTY, PLANT AND EQUIPMENT, NET
PROPERTY, PLANT AND EQUIPMENT, NET	(6) PROPERTY, PLANT AND EQUIPMENT, NET Property, plant and equipment, net is as follows (in thousands): March 31, December 31, 2018 2017 Land $ 83,451 $ 83,310 Terminals, pipelines and equipment 889,608 885,429 Furniture, fixtures and equipment 4,515 4,430 Construction in progress 23,216 21,575 1,000,790 994,744 Less accumulated depreciation (350,753) (339,691) $ 650,037 $ 655,053

GOODWILL

GOODWILL	3 Months Ended
	Mar. 31, 2018
GOODWILL
GOODWILL	(7) GOODWILL Goodwill is as follows (in thousands): March 31, December 31, 2018 2017 Brownsville terminals $ 8,485 $ 8,485 West Coast terminals 943 943 $ 9,428 $ 9,428 Goodwill is required to be tested for impairment annually unless events or changes in circumstances indicate it is more likely than not that an impairment loss has been incurred at an interim date. Our annual test for the impairment of goodwill is performed as of December 31. The impairment test is performed at the reporting unit level. Our reporting units are our operating segments (see Note 19 of Notes to consolidated financial statements). The fair value of each reporting unit is determined on a stand‑alone basis from the perspective of a market participant and represents an estimate of the price that would be received to sell the unit as a whole in an orderly transaction between market participants at the measurement date. If the fair value of a reporting unit exceeds its carrying amount, goodwill of the reporting unit is not considered to be impaired. At March 31, 2018 and December 31, 2017, our Brownsville and West Coast terminals contained goodwill. We did not recognize any goodwill impairment charges during the three months ended March 31, 2018 or during the year ended December 31, 2017 for these reporting units. However, a significant decline in the price of our common units with a resulting increase in the assumed market participants’ weighted average cost of capital, the loss of a significant customer, the disposition of significant assets, or an unforeseen increase in the costs to operate and maintain the Brownsville or West Coast terminals could result in the recognition of an impairment charge in the future.

INVESTMENTS IN UNCONSOLIDATED A

INVESTMENTS IN UNCONSOLIDATED AFFILIATES	3 Months Ended
	Mar. 31, 2018
INVESTMENTS IN UNCONSOLIDATED AFFILIATES
INVESTMENTS IN UNCONSOLIDATED AFFILIATES	(8) INVESTMENTS IN UNCONSOLIDATED AFFILIATES At March 31, 2018 and December 31, 2017, our investments in unconsolidated affiliates include a 42.5% Class A ownership interest in Battleground Oil Specialty Terminal Company LLC (“BOSTCO”) and a 50% ownership interest in Frontera Brownsville LLC (“Frontera”). BOSTCO is a terminal facility located on the Houston Ship Channel that encompasses approximately 7.1 million barrels of distillate, residual and other black oil product storage. Class A and Class B ownership interests share in cash distributions on a 96.5% and 3.5% basis, respectively. Class B ownership interests do not have voting rights and are not required to make capital investments. Frontera is a terminal facility located in Brownsville, Texas that encompasses approximately 1.5 million barrels of light petroleum product storage, as well as related ancillary facilities. The following table summarizes our investments in unconsolidated affiliates: Percentage of Carrying value ownership (in thousands) March 31, December 31, March 31, December 31, 2018 2017 2018 2017 BOSTCO 42.5 % 42.5 % $ 209,270 $ 209,373 Frontera 50 % 50 % 24,760 23,808 Total investments in unconsolidated affiliates $ 234,030 $ 233,181 At both March 31, 2018 and December 31, 2017, our investment in BOSTCO includes approximately $7.0 million of excess investment related to a one time buy-in fee to acquire our 42.5% interest and capitalization of interest on our investment during the construction of BOSTCO amortized over the useful life of the assets. Excess investment is the amount by which our investment exceeds our proportionate share of the book value of the net assets of the BOSTCO entity. Earnings from investments in unconsolidated affiliates was as follows (in thousands): Three months ended March 31, 2018 2017 BOSTCO $ 1,991 $ 1,706 Frontera 898 854 Total earnings from investments in unconsolidated affiliates $ 2,889 $ 2,560 Additional capital investments in unconsolidated affiliates was as follows (in thousands): Three months ended March 31, 2018 2017 BOSTCO $ — $ — Frontera 1,150 2,000 Additional capital investments in unconsolidated affiliates $ 1,150 $ 2,000 Cash distributions received from unconsolidated affiliates was as follows (in thousands): Three months ended March 31, 2018 2017 BOSTCO $ 2,094 $ 3,079 Frontera 1,096 1,270 Cash distributions received from unconsolidated affiliates $ 3,190 $ 4,349 The summarized financial information of our unconsolidated affiliates is as follows (in thousands): Balance sheets: BOSTCO Frontera March 31, December 31, March 31, December 31, 2018 2017 2018 2017 Current assets $ 19,757 $ 24,976 $ 6,553 $ 5,649 Long-term assets 464,219 469,348 45,114 44,292 Current liabilities (7,418) (17,550) (1,992) (2,147) Long-term liabilities (1,315) — (155) (178) Net assets $ 475,243 $ 476,774 $ 49,520 $ 47,616 Statements of operations: BOSTCO Frontera Three months ended Three months ended March 31, March 31, 2018 2017 2018 2017 Revenue $ 16,827 $ 16,630 $ 5,912 $ 5,393 Expenses (12,549) (12,238) (4,116) (3,685) Net earnings $ 4,278 $ 4,392 $ 1,796 $ 1,708

OTHER ASSETS, NET

OTHER ASSETS, NET	3 Months Ended
	Mar. 31, 2018
OTHER ASSETS, NET
OTHER ASSETS, NET	(9) OTHER ASSETS, NET Other assets, net are as follows (in thousands): March 31, December 31, 2018 2017 Customer relationships, net of accumulated amortization of $3,041 and $2,294, respectively $ 46,389 $ 47,136 Revolving credit facility unamortized deferred issuance costs, net of accumulated amortization of $6,383 and $5,984, respectively 6,435 6,778 Amounts due under long-term terminaling services agreements 407 460 Unrealized gain on derivative instruments — 576 Deposits and other assets 291 288 $ 53,522 $ 55,238 Customer relationships. Other assets, net include certain customer relationships primarily at our West Coast terminals. These customer relationships are being amortized on a straight‑line basis over twenty years. Revolving credit facility unamortized deferred issuance costs. Deferred issuance costs are amortized using the effective interest method over the term of the related revolving credit facility. Amounts due under long‑term terminaling services agreements. We have long‑term terminaling services agreements with certain of our customers that provide for minimum payments that increase at stated amounts over the terms of the respective agreements. We recognize as revenue the minimum payments under the long‑term terminaling services agreements on a straight‑line basis over the terms of the respective agreements. At March 31, 2018 and December 31, 2017, we have recognized revenue in excess of the minimum payments that was due through those respective dates under the long‑term terminaling services agreements resulting in an asset of approximately $0.4 million and $0.5 million, respectively.

ACCRUED LIABILITIES

ACCRUED LIABILITIES	3 Months Ended
	Mar. 31, 2018
ACCRUED LIABILITIES
ACCRUED LIABILITIES	(10) ACCRUED LIABILITIES Accrued liabilities are as follows (in thousands): March 31, December 31, 2018 2017 Customer advances and deposits $ 6,565 $ 10,265 Accrued property taxes 2,348 1,381 Accrued environmental obligations 1,903 1,855 Interest payable 3,036 982 Accrued expenses and other 3,801 2,943 $ 17,653 $ 17,426 Customer advances and deposits. We bill certain of our customers one month in advance for terminaling services to be provided in the following month. At March 31, 2018, approximately $0.6 million is considered contract liabilities under ASC 606. Revenue recognized during the three months ended March 31, 2018 from amounts included in contract liabilities at the beginning of the period was approximately $0.5 million. At March 31, 2018 and December 31, 2017, we have billed and collected from certain of our customers approximately $6.6 million and $10.3 million, respectively, in advance of the terminaling services being provided. Accrued environmental obligations. At both March 31, 2018 and December 31, 2017, we have accrued environmental obligations of approximately $1.9 million, representing our best estimate of our remediation obligations. During the three months ended March 31, 2018, we made payments of approximately $0.1 million towards our environmental remediation obligations. During the three months ended March 31, 2018, we increased our estimate of our future environmental remediation costs by approximately $0.2 million. Changes in our estimates of our future environmental remediation obligations may occur as a result of the passage of time and the occurrence of future events.

OTHER LIABILITIES

OTHER LIABILITIES	3 Months Ended
	Mar. 31, 2018
OTHER LIABILITIES
OTHER LIABILITIES	(11) OTHER LIABILITIES Other liabilities are as follows (in thousands): March 31, December 31, 2018 2017 Advance payments received under long-term terminaling services agreements $ 1,574 $ 1,599 Deferred revenue—ethanol blending fees and other projects 2,347 2,034 $ 3,921 $ 3,633 Advance payments received under long‑term terminaling services agreements. We have long‑term terminaling services agreements with certain of our customers that provide for advance minimum payments. We recognize the advance minimum payments as revenue either on a straight‑line basis over the term of the respective agreements or when services have been provided based on volumes of product distributed. At both March 31, 2018 and December 31, 2017, we have received advance minimum payments in excess of revenue recognized under these long‑term terminaling services agreements resulting in a liability of approximately $1.6 million. Deferred revenue—ethanol blending fees and other projects. Pursuant to agreements with our customers, we agreed to undertake certain capital projects that primarily pertain to providing ethanol blending functionality at certain of our Southeast terminals. Upon completion of the projects, our customers have paid us lump‑sum amounts that will be recognized as revenue on a straight‑line basis over the remaining term of the agreements. At March 31, 2018 and December 31, 2017, we have unamortized deferred revenue for completed projects of approximately $2.3 million and $2.0 million, respectively. During the three months ended March 31, 2018 and 2017, we recognized revenue for completed projects on a straight‑line basis of approximately $0.2 million and $0.1 million, respectively. At March 31, 2018, approximately $0.5 million is considered contract liabilities under ASC 606. Revenue recognized during the three months ended March 31, 2018 from amounts included in contract liabilities at the beginning of the period was approximately $0.2 million.

LONG-TERM DEBT

LONG-TERM DEBT	3 Months Ended
	Mar. 31, 2018
LONG-TERM DEBT
LONG-TERM DEBT	(12) LONG‑TERM DEBT Long-term debt is as follows (in thousands): March 31, December 31, 2018 2017 Revolving credit facility due in 2022 $ 290,200 $ 593,200 6.125% senior notes due in 2026 300,000 — Senior notes unamortized deferred issuance costs, net of accumulated amortization of $103 and $nil, respectively (7,823) — $ 582,377 $ 593,200 On February 12, 2018, the Partnership and TLP Finance Corp., our wholly owned subsidiary, completed the sale of $300 million of 6.125% senior notes, issued at par and due 2026. The senior notes were guaranteed on a senior unsecured basis by each of our wholly owned subsidiaries that guarantee obligations under our revolving credit facility. Net proceeds after $7.9 million of issuance costs, were used to repay indebtedness under our revolving credit facility. Our senior secured revolving credit facility, or our “revolving credit facility”, provides for a maximum borrowing line of credit equal to $850 million. The terms of our revolving credit facility include covenants that restrict our ability to make cash distributions, acquisitions and investments, including investments in joint ventures. We may make distributions of cash to the extent of our “available cash” as defined in our partnership agreement. We may make acquisitions and investments that meet the definition of “permitted acquisitions”; “other investments” which may not exceed 5% of “consolidated net tangible assets”; and additional future “permitted JV investments” up to $175 million, which may include additional investments in BOSTCO. The primary financial covenants contained in our revolving credit facility are (i) a total leverage ratio test (not to exceed 5.25 to 1.0), (ii) a senior secured leverage ratio test (not to exceed 3.75 to 1.0), and (iii) a minimum interest coverage ratio test (not less than 2.75 to 1.0). The principal balance of loans and any accrued and unpaid interest are due and payable in full on the maturity date in March 2022. We were in compliance with all financial covenants as of and during the three months ended March 31, 2018 and the year ended December 31, 2017. We may elect to have loans under our revolving credit facility bear interest either (i) at a rate of LIBOR plus a margin ranging from 1.75% to 2.75% depending on the total leverage ratio then in effect, or (ii) at the base rate plus a margin ranging from 0.75% to 1.75% depending on the total leverage ratio then in effect. We also pay a commitment fee on the unused amount of commitments, ranging from 0.375% to 0.5% per annum, depending on the total leverage ratio then in effect. Our obligations under our revolving credit facility are secured by a first priority security interest in favor of the lenders in the majority of our assets, including our investments in unconsolidated affiliates. For the three months ended March 31, 2018 and 2017, the weighted average interest rate on borrowings under our revolving credit facility was approximately 4.6% and 3.3%, respectively. At March 31, 2018 and December 31, 2017, our outstanding borrowings under our revolving credit facility were $290.2 million and $593.2 million, respectively. At both March 31, 2018 and December 31, 2017 our outstanding letters of credit were $0.4 million. We have an effective universal shelf‑registration statement and prospectus on Form S‑3 with the Securities and Exchange Commission (“SEC”) that expires in September 2019. In February 2018, w e and TLP Finance Corp., our 100% owned subsidiary, used the shelf registration statement to issue senior notes that were guaranteed on a senior unsecured basis by each of our 100% owned subsidiaries that guarantee obligations under our revolving credit facility. In the future, we may issue additional debt or equity securities pursuant to that registration statement. TransMontaigne Partners L.P. has no independent assets or operations unrelated to its investments in its consolidated subsidiaries . TLP Finance Corp. has no assets or operations. Our operations are conducted by subsidiaries of TransMontaigne Partners L.P. through our 100% owned operating company subsidiary, TransMontaigne Operating Company L.P. Each of TransMontaigne Operating Company L.P.s’ and our other 100% owned subsidiaries (other than TLP Finance Corp., whose sole purpose is to act as co‑issuer of any debt securities) may guarantee any future debt securities we issue. We expect that any guarantees associated with future debt securities will be full and unconditional and joint and several, subject to certain automatic customary releases, including sale, disposition, or transfer of the capital stock or substantially all of the assets of a subsidiary guarantor, exercise of legal defeasance option or covenant defeasance option, and designation of a subsidiary guarantor as unrestricted in accordance with the indenture. There are no significant restrictions on the ability of TransMontaigne Partners L.P. or any guarantor to obtain funds from its subsidiaries by dividend or loan. None of the assets of TransMontaigne Partners L.P. or a guarantor represent restricted net assets pursuant to the guidelines established by the SEC.

PARTNERS' EQUITY

PARTNERS' EQUITY	3 Months Ended
	Mar. 31, 2018
PARTNERS' EQUITY
PARTNERS' EQUITY	(13) PARTNERS’ EQUITY The number of units outstanding is as follows: General Common partner units equivalent units Units outstanding at December 31, 2017 16,177,353 330,150 Issuance of common units pursuant to our savings and retention program 23,132 — Contribution of cash by TransMontaigne GP to maintain its 2% general partner interest — 463 Units outstanding at March 31, 2018 16,200,485 330,613

EQUITY-BASED COMPENSATION

EQUITY-BASED COMPENSATION	3 Months Ended
	Mar. 31, 2018
EQUITY-BASED COMPENSATION
EQUITY-BASED COMPENSATION	(14) EQUITY-BASED COMPENSATION Long-term incentive plan. The TLP Management Services long-term incentive plan reserves 750,000 common units to be granted as awards under the plan, with such amount subject to adjustment as provided for under the terms of the plan if there is a change in our common units, such as a unit split or other reorganization. The common units authorized to be granted under the TLP Management Services long-term incentive plan are registered pursuant to a registration statement on Form S-8. The TLP Management Services long‑term incentive plan is administered by the compensation committee of the board of directors of our general partner and is used for grants of units to the independent directors of our general partner. The grants to the independent directors of our general partner under the TLP Management Services long-term incentive plan are immediately vested and not subject to forfeiture. Accordingly, there are no long-term incentive plan grants outstanding as of March 31, 2018. Generally accepted accounting principles require us to measure the cost of board member services received in exchange for an award of equity instruments based on the grant‑date fair value of the award. That cost is recognized over the vesting period on a straight line basis during which a board member is required to provide services in exchange for the award with the costs being accelerated upon the occurrence of accelerated vesting events, such as a change in control of our general partner. For awards to the independent directors of our general partner, equity-based compensation of approximately $68,000 is included in equity-based compensation expense for both the three months ended March 31, 2018 and 2017. Savings and retention program. TLP Management Services savings and retention program is intended to constitute a program under, and be subject to, the TLP Management Services long-term incentive plan described above. The savings and retention program is used for awards to employees of TLP Management Services who provide services to the Partnership. The restricted phantom units awarded and accrued under the savings and retention program are subject to forfeiture until the vesting date. Recipients have distribution equivalent rights from the date of grant that accrue additional restricted phantom units equivalent to the value of quarterly distributions paid by us on each of our outstanding common units. Recipients of restricted phantom units under the savings and retention program do not have voting rights. The purpose of the savings and retention program is to provide for the reward and retention of participants by providing them with bonus awards that vest over future service periods. Awards under the program generally become vested as to 50% of a participant’s annual award as of the first day of the month that falls closest to the second anniversary of the grant date, and the remaining 50% as of the first day of the month that falls closest to the third anniversary of the grant date, subject to earlier vesting upon a participant’s attainment of the age and length of service thresholds, retirement, death or disability, involuntary termination without cause, or termination of a participant’s employment following a change in control of the Partnership, our general partner or TLP Management Services, as specified in the program. A person will satisfy the age and length of service thresholds of the program upon the attainment of the earliest of (a) age sixty, (b) age fifty five and ten years of service as an officer of TLP Management Services or any of its affiliates or predecessors, or (c) age fifty and twenty years of service as an employee of TLP Management Services or any of its affiliates or predecessors. Under the omnibus agreement we have agreed to reimburse the owner of TransMontaigne GP for bonus awards made to key employees under the savings and retention program, provided the compensation committee and the conflicts committee of our general partner approve the annual awards granted under the program (see Note 2 of the Notes to consolidated financial statements). We have the option to provide the reimbursement in either a cash payment or the delivery of our common units to the savings and retention program or alternatively directly to the award recipients, with the reimbursement made in accordance with the underlying vesting and payment schedule of the savings and retention program. Our reimbursement for the bonus awards is reduced for forfeitures and is increased for the value of quarterly distributions accrued under the distribution equivalent rights. We have the intent and ability to settle our reimbursement for the bonus awards in our common units, and accordingly, we account for the bonus awards as an equity award. Given that we do not have any employees to provide corporate and support services and instead we contract for such services under the omnibus agreement, generally accepted accounting principles require us to classify the savings and retention program awards as a non-employee award and measure the cost of services received in exchange for an award of equity instruments based on the vesting‑date fair value of the award. That cost, or an estimate of that cost in the case of unvested restricted phantom units, is recognized over the period during which services are provided in exchange for the award. As of March 31, 2018, there was approximately $2.5 million of total unrecognized equity-based compensation expense related to unvested restricted phantom units, which is expected to be recognized over the remaining weighted average period of 1.26 years. For bonus awards to employees of TLP Management Services, approximately $1.9 million and $1.7 million is included in equity-based compensation expense for the three months ended March 31, 2018 and 2017, respectively. Activity related to our equity-based awards granted under the savings and retention program for services performed under the omnibus agreement for the three months ended March 31, 2018 is as follows: Weighted Weighted average average Vested price Unvested price Restricted phantom units outstanding at December 31, 2017 91,877 $ 38.91 54,244 $ 38.81 Issuance of units (23,132) $ 39.58 — $ — Units withheld for settlement of withholding taxes (7,980) $ 39.58 — $ — Unit accrual for distributions paid 1,306 $ 38.64 986 $ 38.64 Vesting of units 18,970 $ 36.61 (18,970) $ 36.61 Grant of units 46,362 $ 35.23 33,097 $ 35.23 Restricted phantom units outstanding at March 31, 2018 127,403 $ 37.49 69,357 $ 38.18 Vested and expected to vest at March 31, 2018 196,760 $ 37.74

NET EARNINGS PER LIMITED PARTNE

NET EARNINGS PER LIMITED PARTNER UNIT	3 Months Ended
	Mar. 31, 2018
NET EARNINGS PER LIMITED PARTNER UNIT
NET EARNINGS PER LIMITED PARTNER UNIT	(15) NET EARNINGS PER LIMITED PARTNER UNIT The following table reconciles net earnings to net earnings allocable to limited partners and sets forth the computation of basic and diluted net earnings per limited partner unit (in thousands, except per unit amounts): Three months ended March 31, 2018 2017 Net earnings $ 12,174 $ 12,954 Less: Distributions payable on behalf of incentive distribution rights (3,595) (2,636) Distributions payable on behalf of general partner interest (259) (239) Earnings allocable to general partner interest less than distributions payable to general partner interest 88 32 Earnings allocable to general partner interest including incentive distribution rights (3,766) (2,843) Net earnings allocable to limited partners per the consolidated statements of operations $ 8,408 $ 10,111 Basic weighted average units 16,291 16,245 Diluted weighted average units 16,322 16,266 Net earnings per limited partner unit—basic $ 0.52 $ 0.62 Net earnings per limited partner unit—diluted $ 0.52 $ 0.62 Pursuant to our partnership agreement we are required to distribute available cash (as defined by our partnership agreement) as of the end of the reporting period. Such distributions are declared within 45 days after period end. The following table sets forth the distribution declared per common unit attributable to the periods indicated: Distribution January 1, 2017 through March 31, 2017 $ 0.725 April 1, 2017 through June 30, 2017 $ 0.740 July 1, 2017 through September 30, 2017 $ 0.755 October 1, 2017 through December 31, 2017 $ 0.770 January 1, 2018 through March 31, 2018 $ 0.785

COMMITMENTS AND CONTINGENCIES

COMMITMENTS AND CONTINGENCIES	3 Months Ended
	Mar. 31, 2018
COMMITMENTS AND CONTINGENCIES
COMMITMENTS AND CONTINGENCIES	(16) COMMITMENTS AND CONTINGENCIES Contract commitments. At March 31, 2018, we have contractual commitments of approximately $23.2 million for the supply of services, labor and materials related to capital projects that currently are under development. We expect that these contractual commitments will be paid within the next twelve months. Operating leases. We lease property and equipment under non‑cancelable operating leases. At March 31, 2018, future minimum lease payments under these non‑cancelable operating leases are as follows (in thousands): Years ending December 31: 2018 $ 2,353 2019 3,323 2020 1,990 2021 1,907 2022 962 Thereafter 4,275 $ 14,810 Included in the above non‑cancelable operating lease commitments are amounts for property rentals that we have sublet under non‑cancelable sublease agreements or have reimbursement agreements with affiliates, for which we expect to receive minimum rentals of approximately $8.6 million in future periods. Rental expense under operating leases was approximately $0.5 million $0.9 million for the three months ended March 31, 2018 and 2017. Legal proceedings . We are party to various legal, regulatory and other matters arising from the day-to-day operations of our business that may result in claims against us. While the ultimate impact of any proceedings cannot be predicted with certainty, our management believes that the resolution of any of our pending legal proceedings will not have a material adverse effect on our business, financial position, results of operations or cash flows.

DISCLOSURES ABOUT FAIR VALUE

DISCLOSURES ABOUT FAIR VALUE	3 Months Ended
	Mar. 31, 2018
DISCLOSURES ABOUT FAIR VALUE
DISCLOSURES ABOUT FAIR VALUE	(17) DISCLOSURES ABOUT FAIR VALUE “GAAP” defines fair value, establishes a framework for measuring fair value and expands disclosures about fair value measurements. GAAP also establishes a fair value hierarchy that prioritizes the use of higher‑level inputs for valuation techniques used to measure fair value. The three levels of the fair value hierarchy are: (1) Level 1 inputs, which are quoted prices (unadjusted) in active markets for identical assets or liabilities; (2) Level 2 inputs, which are inputs other than quoted prices included within Level 1 that are observable for the asset or liability, either directly or indirectly; and (3) Level 3 inputs, which are unobservable inputs for the asset or liability. The fair values of the following financial instruments represent our best estimate of the amounts that would be received to sell those assets or that would be paid to transfer those liabilities in an orderly transaction between market participants at that date. Our fair value measurements maximize the use of observable inputs. However, in situations where there is little, if any, market activity for the asset or liability at the measurement date, the fair value measurement reflects our judgments about the assumptions that market participants would use in pricing the asset or liability based on the best information available in the circumstances. The following methods and assumptions were used to estimate the fair value of financial instruments at March 31, 2018 and December 31, 2017. Cash equivalents. The carrying amount approximates fair value because of the short‑term maturity of these instruments. The fair value is categorized in Level 1 of the fair value hierarchy. Derivative instruments. The carrying amount of our interest rate swaps was determined using a pricing model based on the LIBOR swap rate and other observable market data. The fair value is categorized in Level 2 of the fair value hierarchy. Debt. The carrying amount of our revolving credit facility debt approximates fair value since borrowings under the facility bear interest at current market interest rates. The fair value of our publicly traded notes was based on the price of those notes at March 31, 2018 and December 31, 2017. The fair value is categorized in Level 2 of the fair value hierarchy.

REVENUE FROM CONTRACTS WITH CUS

REVENUE FROM CONTRACTS WITH CUSTOMERS	3 Months Ended
	Mar. 31, 2018
REVENUE FROM CONTRACTS WITH CUSTOMERS
REVENUE FROM CONTRACTS WITH CUSTOMERS	(18) REVENUE FROM CONTRACTS WITH CUSTOMERS The majority of our terminaling service agreements contain firm commitments for minimum revenue streams and are accounted for in accordance with ASC 840, Leases (“ASC 840 revenue”). The remainder is recognized in accordance with ASC 606, Revenue From Contracts With Customers (“ASC 606 revenue”). The following table provides details of our revenue disaggregated by category of revenue (in thousands): Three months ended March 31, 2018 Terminaling services fees: Firm commitments (ASC 840 revenue) $ 38,706 Firm commitments (ASC 606 revenue) 3,427 Total firm commitments revenue 42,133 Ancillary revenue (ASC 606 revenue) 11,058 Total terminaling services fees 53,191 Pipeline transportation fees (ASC 840 revenue) 869 Management fees (ASC 606 revenue) 2,384 Total revenue $ 56,444 The following table includes our estimated revenue associated with our firm commitments under our terminaling services fees which is expected to be recognized as ASC 606 revenue in the specified period related to the future performance obligations as of the end of the reporting period (in thousands): Estimated Future ASC 606 Revenue by Segment Midwest Terminals and Gulf Coast Pipeline Brownsville River Southeast West Coast Terminals System Terminals Terminals Terminals Terminals Total Remainder of 2018 $ 3,109 $ 92 $ — $ 830 $ — $ 3,213 $ 7,244 2019 625 17 — 970 — 1,652 3,264 2020 — — — 970 — 125 1,095 2021 — — — 531 — 5 536 Thereafter — — — — — — Total estimated ASC 606 revenue $ 3,734 $ 109 $ — $ 3,301 $ — $ 4,995 $ 12,139 Our ASC 606 revenue, for purposes of the tabular presentation above, excludes estimates of future rate changes due to changes in indices or contractually negotiated rate escalations and is generally limited to contracts that have minimum payment arrangements. The balances include the full amount of our customer commitments accounted for as ASC 606 revenue as of March 31, 2018 through the expiration of the related contracts. The balances disclosed exclude all performance obligations for which the original expected term is one year or less, the term of the contract with the customer is open and cannot be estimated, the contract includes options for future purchases or the consideration is variable. Estimated revenue in the table above excludes revenue arrangements accounted for in accordance with ASC 840 in the amount of $113.1 million for the remainder of 2018, $121.4 million for 2019, $100.7 million for 2020, $79.4 million for 2021 and $64.5 million thereafter.

BUSINESS SEGMENTS

BUSINESS SEGMENTS	3 Months Ended
	Mar. 31, 2018
BUSINESS SEGMENTS
BUSINESS SEGMENTS	(19) BUSINESS SEGMENTS We provide integrated terminaling, storage, transportation and related services to companies engaged in the trading, distribution and marketing of refined petroleum products, crude oil, chemicals, fertilizers and other liquid products. Our chief operating decision maker is our general partner’s chief executive officer. Our general partner’s chief executive officer reviews the financial performance of our business segments using disaggregated financial information about “net margins” for purposes of making operating decisions and assessing financial performance. “Net margins” is composed of revenue less direct operating costs and expenses. Accordingly, we present “net margins” for each of our business segments: (i) Gulf Coast terminals, (ii) Midwest terminals and pipeline system, (iii) Brownsville terminals, (iv) River terminals, (v) Southeast terminals and (vi) West Coast terminals. The financial performance of our business segments is as follows (in thousands): Three months ended March 31, 2018 2017 Gulf Coast Terminals: Terminaling services fees $ 16,173 $ 16,007 Management fees 97 283 Revenue 16,270 16,290 Direct operating costs and expenses (5,832) (5,554) Net margins 10,438 10,736 Midwest Terminals and Pipeline System: Terminaling services fees 2,419 2,403 Pipeline transportation fees 433 433 Revenue 2,852 2,836 Direct operating costs and expenses (712) (712) Net margins 2,140 2,124 Brownsville Terminals: Terminaling services fees 2,066 2,467 Pipeline transportation fees 436 1,283 Management fees 2,104 1,924 Revenue 4,606 5,674 Direct operating costs and expenses (2,041) (2,872) Net margins 2,565 2,802 River Terminals: Terminaling services fees 2,754 2,670 Revenue 2,754 2,670 Direct operating costs and expenses (1,836) (1,650) Net margins 918 1,020 Southeast Terminals: Terminaling services fees 20,239 17,197 Management fees 183 183 Revenue 20,422 17,380 Direct operating costs and expenses (6,619) (5,723) Net margins 13,803 11,657 West Coast Terminals: Terminaling services fees 9,540 — Revenue 9,540 — Direct operating costs and expenses (3,105) — Net margins 6,435 — Total net margins 36,299 28,339 General and administrative expenses (4,981) (3,971) Insurance expenses (1,246) (1,006) Equity-based compensation expense (2,017) (1,817) Depreciation and amortization (11,808) (8,705) Earnings from unconsolidated affiliates 2,889 2,560 Operating income 19,136 15,400 Other expenses (6,962) (2,446) Net earnings $ 12,174 $ 12,954 Supplemental information about our business segments is summarized below (in thousands): Three months ended March 31, 2018 Midwest Terminals and Gulf Coast Pipeline Brownsville River Southeast West Coast Terminals System Terminals Terminals Terminals Terminals Total Revenue: External customers $ 14,058 $ 2,852 $ 2,488 $ 2,754 $ 20,422 $ 9,540 $ 52,114 Frontera — — 2,118 — — — 2,118 Associated Asphalt, LLC 2,212 — — — — — 2,212 Revenue $ 16,270 $ 2,852 $ 4,606 $ 2,754 $ 20,422 $ 9,540 $ 56,444 Capital expenditures $ 1,366 $ 301 $ 443 $ 547 $ 3,283 $ 563 $ 6,503 Identifiable assets $ 122,564 $ 20,397 $ 41,748 $ 48,941 $ 215,602 $ 276,542 $ 725,794 Cash and cash equivalents 937 Investments in unconsolidated affiliates 234,030 Revolving credit facility unamortized deferred issuance costs, net 6,435 Other 8,422 Total assets $ 975,618 Three months ended March 31, 2017 Midwest Terminals and Gulf Coast Pipeline Brownsville River Southeast West Coast Terminals System Terminals Terminals Terminals Terminals Total Revenue: External customers $ 16,290 $ 2,836 $ 3,904 $ 2,670 $ 17,380 $ — $ 43,080 Frontera — — 1,770 — — — 1,770 Revenue $ 16,290 $ 2,836 $ 5,674 $ 2,670 $ 17,380 $ — $ 44,850 Capital expenditures $ 1,527 $ 222 $ 144 $ 394 $ 7,213 $ — $ 9,500

SUBSEQUENT EVENT

SUBSEQUENT EVENT	3 Months Ended
	Mar. 31, 2018
SUBSEQUENT EVENT
SUBSEQUENT EVENT	(20) SUBSEQUENT EVENT Quarterly distribution. On April 17, 2018, we announced a distribution of $0.785 per unit for the period from January 1, 2018 through March 31, 2018. This distribution was paid on May 8, 2018 to unitholders of record on April 30, 2018. Third Amended and Restated Omnibus Agreement. In connection with our previously discussed Phase II buildout at our Collins terminal, the expansion of the Brownsville terminal and pipeline operations and the December 2017 acquisition of the West Coast facilities, on May 7, 2018, the Partnership, with the concurrence of the conflicts committee of our general partner, agreed to an annual increase in the aggregate fees payable to the owner of the general partner under the omnibus agreement of $3.6 million beginning May 13, 2018 (See Note 2 of Notes to consolidated financial statements).

SUMMARY OF SIGNIFICANT ACCOUN28

SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Policies)	3 Months Ended
	Mar. 31, 2018
SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES
Nature of business	(a) Nature of business TransMontaigne Partners L.P. (“we,” “us,” “our,” “the Partnership”) was formed in February 2005 as a Delaware limited partnership. We provide integrated terminaling, storage, transportation and related services for companies engaged in the trading, distribution and marketing of light refined petroleum products, heavy refined petroleum products, crude oil, chemicals, fertilizers and other liquid products. We conduct our operations in the United States along the Gulf Coast, in the Midwest, in Houston and Brownsville, Texas, along the Mississippi and Ohio rivers, in the Southeast and along the West Coast. We are controlled by our general partner, TransMontaigne GP L.L.C. (“TransMontaigne GP”), which as of February 1, 2016 is a wholly‑owned indirect subsidiary of ArcLight Energy Partners Fund VI, L.P. (“ArcLight”).
Basis of presentation and use of estimates	(b) Basis of presentation and use of estimates Our accounting and financial reporting policies conform to accounting principles generally accepted in the United States of America (“GAAP”). The accompanying consolidated financial statements include the accounts of TransMontaigne Partners L.P. and its controlled subsidiaries. Investments where we do not have the ability to exercise control, but do have the ability to exercise significant influence, are accounted for using the equity method of accounting. All inter‑company accounts and transactions have been eliminated in the preparation of the accompanying consolidated financial statements. The accompanying consolidated financial statements include all adjustments (consisting of normal and recurring accruals) considered necessary to present fairly our financial position as of March 31, 2018 and December 31, 2017 and our results of operations for the three months ended March 31, 2018 and 2017. Certain reclassifications of previously reported amounts have been made to conform to the current year presentation. The preparation of financial statements in conformity with “GAAP” requires us to make estimates and assumptions that affect the reported amounts of assets and liabilities and disclosure of contingent assets and liabilities at the date of the financial statements, and the reported amounts of revenue and expenses during the reporting periods. The following estimates, in management’s opinion, are subjective in nature, require the exercise of judgment, and/or involve complex analyses: business combination estimates and assumptions, useful lives of our plant and equipment and accrued environmental obligations. Changes in these estimates and assumptions will occur as a result of the passage of time and the occurrence of future events. Actual results could differ from these estimates.
Accounting for terminal and pipeline operations	(c) Accounting for terminal and pipeline operations Effective January 1, 2018, we adopted Accounting Standards Codification (“ASC”) Topic 606, Revenue from Contracts with Customers (“ASC 606”), applying the modified retrospective transition method, which required us to apply the new standard to (i) all new revenue contracts entered into after January 1, 2018, and (ii) revenue contracts which were not completed as of January 1, 2018. ASC 606 replaces existing revenue recognition requirements in GAAP and requires entities to recognize revenue at an amount that reflects the consideration to which we expect to be entitled in exchange for transferring goods or services to a customer. ASC 606 also requires certain disclosures regarding qualitative and quantitative information regarding the nature, amount, timing, and uncertainty of revenue and cash flows arising from contracts with customers. The adoption of ASC 606 did not result in a transition adjustment nor did it have an impact on the timing or amount of our revenue recognition (See Note 18 of Notes to consolidated financial statements). The adoption of ASC 606 did not result in changes to our accounting for trade accounts receivable (see Note 4 of the Notes to the consolidated financial statements), contract assets or contract liabilities. Contract assets primarily relate to our rights to consideration from completed performance obligations but not billable at the reporting date. We recognize contract assets in situations where revenue recognition under ASC 606 occurs prior to billing the customer based on our rights under the contract. Contract assets are transferred to accounts receivable when the rights become unconditional. At March 31, 2018, we did not have any contract assets related to ASC 606. Contract liabilities primarily relate to consideration received from customers in advance of completing the performance obligation. We recognize contract liabilities under these arrangements as revenue once all contingencies or potential performance obligations have been satisfied by the (i) performance of services or (ii) expiration of the customer’s rights under the contract. Short-term contract liabilities include customer advances and deposits (see Note 10 of the Notes to the consolidated financial statements). Long-term contract liabilities include deferred revenue related to ethanol blending fees and other projects (See Note 11 of Notes to the consolidated financial statements). We generate revenue from terminaling services fees, pipeline transportation fees and management fees. Under ASC 606, we recognize revenue over time or at a point in time, depending on the nature of the performance obligations contained in the respective contract with our customer. A performance obligation is a promise in a contract to transfer goods or services to the customer. The contract transaction price is allocated to each performance obligation and recognized as revenue when, or as, the performance obligation is satisfied. The majority of our revenue is recognized pursuant to ASC guidance other than ASC 606. The following is an overview of our significant revenue streams, including a description of the respective performance obligations and related method of revenue recognition. Terminaling services fees. Our terminaling services agreements are structured as either throughput agreements or storage agreements. Our throughput agreements contain provisions that require our customers to make minimum payments, which are based on contractually established minimum volumes of throughput of the customer’s product at our facilities over a stipulated period of time. Due to this minimum payment arrangement, we recognize a fixed amount of revenue from the customer over a certain period of time, even if the customer throughputs less than the minimum volume of product during that period. In addition, if a customer throughputs a volume of product exceeding the minimum volume, we would recognize additional revenue on this incremental volume. Our storage agreements require our customers to make minimum payments based on the volume of storage capacity available to the customer under the agreement, which results in a fixed amount of recognized revenue. The majority of our firm commitments under our terminaling services agreements are accounted for in accordance with ASC 840, Leases (“”ASC 840 revenue”). The remainder is recognized in accordance with ASC 606 (“ASC 606 revenue”) where the minimum payment arrangement in each contract is a single performance obligation that is primarily satisfied over time through the contract term. Revenue recognized in excess of firm commitments and revenue recognized based solely on the volume of product distributed or injected are referred to as ancillary. The ancillary revenue associated with terminaling services include injection fees based on the volume of product injected with additive compounds, net product gained resulting from differences in measurement of product volumes received and distributed at our terminaling facilities, services including heating and mixing of stored product, butane blending and volumes of product throughput that exceed the contractually established minimum volumes. The revenue generated by these services is primarily considered optional purchases to acquire additional services or variable consideration that is required to be estimated under ASC 606 for any uncertainty that is not resolved in the period of the service. We account for the majority of ancillary revenue at individual points in time when the services are delivered to the customer. Ancillary revenue is recognized as ASC 606 revenue. Pipeline transportation fees. We earn pipeline transportation fees at our Diamondback pipeline either based on the volume of product transported or under capacity reservation agreements. Revenue associated with the capacity reservation is recognized ratably over the respective term, regardless of whether the capacity is actually utilized. We earn pipeline transportation fees at our Razorback pipeline based on an allocation of the aggregate fees charged under the capacity agreement with our customer who has contracted for 100% of our Razorback system. For the three months ended March 31, 2018, pipeline transportation revenue is primarily accounted for as ASC 840 revenue. Management fees. We manage and operate certain tank capacity at our Port Everglades South terminal for a major oil company and receive a reimbursement of its proportionate share of operating and maintenance costs. We manage and operate the Frontera joint venture and receive a management fee based on our costs incurred. We also currently manage and operate for an affiliate of PEMEX, Mexico’s state-owned petroleum company, a bi-directional products pipeline connected to our Brownsville terminal facility and receive a management fee. We manage and operate rail sites at certain Southeast terminals on behalf of a major oil company and receive reimbursement for operating and maintenance costs. Management fee revenue is recognized at individual points in time as the services are performed or as the costs are incurred. This revenue is primarily accounted for as ASC 606 revenue.
Cash and cash equivalents	(d) Cash and cash equivalents We consider all short‑term investments with a remaining maturity of three months or less at the date of purchase to be cash equivalents.
Property, plant and equipment	(e) Property, plant and equipment Depreciation is computed using the straight‑line method. Estimated useful lives are 15 to 25 years for terminals and pipelines and 3 to 25 years for furniture, fixtures and equipment. All items of property, plant and equipment are carried at cost. Expenditures that increase capacity or extend useful lives are capitalized. Repairs and maintenance are expensed as incurred. We evaluate long‑lived assets for impairment whenever events or changes in circumstances indicate that the carrying value of an asset group may not be recoverable based on expected undiscounted future cash flows attributable to that asset group. If an asset group is impaired, the impairment loss to be recognized is the excess of the carrying amount of the asset group over its estimated fair value.
Investments in unconsolidated affiliates	(f) Investments in unconsolidated affiliates We account for our investments in unconsolidated affiliates, which we do not control but do have the ability to exercise significant influence over, using the equity method of accounting. Under this method, the investment is recorded at acquisition cost, increased by our proportionate share of any earnings and additional capital contributions and decreased by our proportionate share of any losses, distributions received and amortization of any excess investment. Excess investment is the amount by which our total investment exceeds our proportionate share of the book value of the net assets of the investment entity. We evaluate our investments in unconsolidated affiliates for impairment whenever events or circumstances indicate there is a loss in value of the investment that is other than temporary. In the event of impairment, we would record a charge to earnings to adjust the carrying amount to estimated fair value.
Environmental obligations	(g) Environmental obligations We accrue for environmental costs that relate to existing conditions caused by past operations when probable and reasonably estimable (see Note 10 of Notes to consolidated financial statements). Environmental costs include initial site surveys and environmental studies of potentially contaminated sites, costs for remediation and restoration of sites determined to be contaminated and ongoing monitoring costs, as well as fines, damages and other costs, including direct legal costs. Liabilities for environmental costs at a specific site are initially recorded, on an undiscounted basis, when it is probable that we will be liable for such costs, and a reasonable estimate of the associated costs can be made based on available information. Such an estimate includes our share of the liability for each specific site and the sharing of the amounts related to each site that will not be paid by other potentially responsible parties, based on enacted laws and adopted regulations and policies. Adjustments to initial estimates are recorded, from time to time, to reflect changing circumstances and estimates based upon additional information developed in subsequent periods. Estimates of our ultimate liabilities associated with environmental costs are difficult to make with certainty due to the number of variables involved, including the early stage of investigation at certain sites, the lengthy time frames required to complete remediation, technology changes, alternatives available and the evolving nature of environmental laws and regulations. We periodically file claims for insurance recoveries of certain environmental remediation costs with our insurance carriers under our comprehensive liability policies (see Note 5 of Notes to consolidated financial statements). We recognize our insurance recoveries as a credit to income in the period that we assess the likelihood of recovery as being probable. In connection with our previous acquisitions of certain terminals from TransMontaigne LLC, a wholly owned subsidiary of NGL Energy Partners LP and the previous owner of our general partner, TransMontaigne LLC agreed to indemnify us against certain potential environmental claims, losses and expenses at those terminals. Pursuant to the acquisition agreements for each of the Florida (except Pensacola) and Midwest terminals, the Southeast terminals, the Brownsville and the River terminals, and the Pensacola, Florida Terminal, TransMontaigne LLC is obligated to indemnify us against environmental claims, losses and expenses that were associated with the ownership or operation of the terminals prior to the purchase by the Partnership. In each acquisition agreement, TransMontaigne LLC’s maximum indemnification liability is subject to a specified time period for indemnification, cap on indemnification and satisfaction of a deductible amount before indemnification, in each case subject to certain exceptions, limitations and conditions specified therein. TransMontaigne LLC has no indemnification obligations with respect to environmental claims made as a result of additions to or modifications of environmental laws promulgated after certain specified dates. The environmental indemnification obligations of TransMontaigne LLC to us remain in place and were not affected by ArcLight’s acquisition of our general partner on February 1, 2016.
Asset retirement obligations	(h) Asset retirement obligations Asset retirement obligations are legal obligations associated with the retirement of long‑lived assets that result from the acquisition, construction, development or normal use of the asset. Generally accepted accounting principles require that the fair value of a liability related to the retirement of long‑lived assets be recorded at the time a legal obligation is incurred. Once an asset retirement obligation is identified and a liability is recorded, a corresponding asset is recorded, which is depreciated over the remaining useful life of the asset. After the initial measurement, the liability is adjusted to reflect changes in the asset retirement obligation. If and when it is determined that a legal obligation has been incurred, the fair value of any liability is determined based on estimates and assumptions related to retirement costs, future inflation rates and interest rates. Our long‑lived assets consist of above‑ground storage facilities and underground pipelines. We are unable to predict if and when these long‑lived assets will become completely obsolete and require dismantlement. We have not recorded an asset retirement obligation, or corresponding asset, because the future dismantlement and removal dates of our long‑lived assets is indeterminable and the amount of any associated costs are believed to be insignificant. Changes in our assumptions and estimates may occur as a result of the passage of time and the occurrence of future events.
Equity based compensation	(i) Equity-based compensation Generally accepted accounting principles require us to measure the cost of services received in exchange for an award of equity instruments based on the measurement‑date fair value of the award. That cost is recognized during the period services are provided in exchange for the award (see Note 14 of Notes to consolidated financial statements).
Accounting for derivative instruments	(j) Accounting for derivative instruments Generally accepted accounting principles require us to recognize all derivative instruments at fair value in the consolidated balance sheets as assets or liabilities (see Notes 5 and 9 of Notes to consolidated financial statements). Changes in the fair value of our derivative instruments are recognized in earnings. At March 31, 2018 and December 31, 2017, our derivative instruments were limited to interest rate swap agreements with an aggregate notional amount of $50.0 million and $125.0 million, respectively. At March 31, 2018 the remaining derivative instrument expires March 11, 2019. Pursuant to the terms of the interest rate swap agreements, we paid a blended fixed rate of approximately 0.97% and 1.01% for the three months ended March 31, 2018 and 2017, respectively, and received interest payments based on the one-month LIBOR. The net difference to be paid or received under the interest rate swap agreements is settled monthly and is recognized as an adjustment to interest expense. The fair value of our interest rate swap agreements are determined using a pricing model based on the LIBOR swap rate and other observable market data.
Income taxes	(k) Income taxes No provision for U.S. federal income taxes has been reflected in the accompanying consolidated financial statements because we are treated as a partnership for federal income tax purposes. As a partnership, all income, gains, losses, expenses, deductions and tax credits generated by us flow through to our unitholders.
Net earnings per limited partner unit	(l) Net earnings per limited partner unit Net earnings allocable to the limited partners, for purposes of calculating net earnings per limited partner unit, are calculated under the two-class method and accordingly are net of the earnings allocable to the general partner interest and distributions payable to any restricted phantom units granted under our equity-based compensation plans that participate in our distributions. The earnings allocable to the general partner interest include the distributions of available cash (as defined by our partnership agreement) attributable to the period to the general partner interest, net of adjustments for the general partner’s share of undistributed earnings, and the incentive distribution rights. Undistributed earnings are the difference between the earnings and the distributions attributable to the period. Undistributed earnings are allocated to the limited partners and general partner interest based on their respective sharing of earnings or losses specified in the partnership agreement, which is based on their ownership percentages of 98% and 2%, respectively. The incentive distribution rights are not allocated a portion of the undistributed earnings given they are not entitled to distributions other than from available cash. Further, the incentive distribution rights do not share in losses under our partnership agreement. Basic net earnings per limited partner unit is computed by dividing net earnings allocable to the limited partners by the weighted average number of limited partner units outstanding during the period. Diluted net earnings per limited partner unit is computed by dividing net earnings allocable to the limited partners by the weighted average number of limited partner units outstanding during the period and any potential dilutive securities outstanding during the period.
Comprehensive Income	(m) Comprehensive income Entities that report items of other comprehensive income have the option to present the components of net earnings and comprehensive income in either one continuous financial statement, or two consecutive financial statements. As the Partnership has no components of comprehensive income other than net earnings, no statement of comprehensive income has been presented.
Recent accounting pronouncements	(n) Recent accounting pronouncements Effective January 1, 2018 we adopted ASU 2016-15, Statement of Cash Flows: Classification of Certain Cash Receipt and Cash Payments. This ASU requires changes in the presentation of certain items, including but not limited to debt prepayment or debt extinguishment costs; contingent consideration payments made after a business combination; proceeds from the settlement of insurance claims; proceeds from the settlement of corporate-owned life insurance policies and distributions received from equity method investees. The adoption of this ASU did not have a material impact on our unaudited consolidated financial statements. In February 2016, the FASB issued ASU 2016-02, Leases. The objective of this update is to improve financial reporting about leasing transactions. ASU 2016-02 is effective for annual reporting periods beginning after December 15, 2018, including interim periods within that reporting period. We are currently evaluating the potential impact that the adoption will have on our disclosures and financial statements. Additionally, we are in the process of evaluating and designing the necessary changes to our business processes, systems and controls to support recognition and disclosure under the new standard. In January 2017, the FASB issued ASU 2017-04, Intangibles-Goodwill and Other: Simplifying the Test for Goodwill Impairment, to simplify the accounting for goodwill impairment by eliminating step 2 from the goodwill impairment test. ASU 2017-04 is effective for annual reporting periods beginning after December 15, 2019, including interim periods within that reporting period. We are currently evaluating the potential impact that the adoption will have on our disclosures and financial statements.

BUSINESS COMBINATION AND TERM29

BUSINESS COMBINATION AND TERMINAL ACQUISITION AND DISPOSITION (Tables)	3 Months Ended
	Mar. 31, 2018
West Coast terminals
Schedule of purchase price and assessment of the fair value of the assets acquired and liabilities assumed	The purchase price and final assessment of the fair value of the assets acquired and liabilities assumed in the business combination were as follows (in thousands): Other current assets $ 1,037 Property, plant and equipment 228,000 Goodwill 943 Customer relationships 47,000 Total assets acquired 276,980 Environmental obligation 220 Total liabilities assumed 220 Allocated purchase price $ 276,760

CONCENTRATION OF CREDIT RISK 30

CONCENTRATION OF CREDIT RISK AND TRADE ACCOUNTS RECEIVABLE (Tables)	3 Months Ended
	Mar. 31, 2018
CONCENTRATION OF CREDIT RISK AND TRADE ACCOUNTS RECEIVABLE
Schedule of trade accounts receivable, net (in thousands)	Trade accounts receivable, net consists of the following (in thousands): March 31, December 31, 2018 2017 Trade accounts receivable $ 11,625 $ 11,128 Less allowance for doubtful accounts (109) (111) $ 11,516 $ 11,017
Schedule of customer who accounted for at least 10% of consolidated revenue	Three months ended March 31, 2018 2017 NGL Energy Partners LP 22 % 26 % Castleton Commodities International LLC 11 % 13 % RaceTrac Petroleum Inc. 11 % 12 %

OTHER CURRENT ASSETS (Tables)

OTHER CURRENT ASSETS (Tables)	3 Months Ended
	Mar. 31, 2018
OTHER CURRENT ASSETS
Schedule of other current assets (in thousands)	Other current assets are as follows (in thousands): March 31, December 31, 2018 2017 Prepaid insurance $ 3,997 $ 4,151 Amounts due from insurance companies 1,933 1,981 Additive detergent 1,730 1,715 Unrealized gain on derivative instrument 534 — Deposits and other assets 4,151 12,807 $ 12,345 $ 20,654

PROPERTY, PLANT AND EQUIPMENT32

PROPERTY, PLANT AND EQUIPMENT, NET (Tables)	3 Months Ended
	Mar. 31, 2018
PROPERTY, PLANT AND EQUIPMENT, NET
Schedule of property, plant and equipment, net (in thousands)	Property, plant and equipment, net is as follows (in thousands): March 31, December 31, 2018 2017 Land $ 83,451 $ 83,310 Terminals, pipelines and equipment 889,608 885,429 Furniture, fixtures and equipment 4,515 4,430 Construction in progress 23,216 21,575 1,000,790 994,744 Less accumulated depreciation (350,753) (339,691) $ 650,037 $ 655,053

GOODWILL (Tables)

GOODWILL (Tables)	3 Months Ended
	Mar. 31, 2018
GOODWILL
Schedule of goodwill (in thousands)	Goodwill is as follows (in thousands): March 31, December 31, 2018 2017 Brownsville terminals $ 8,485 $ 8,485 West Coast terminals 943 943 $ 9,428 $ 9,428

INVESTMENTS IN UNCONSOLIDATED34

INVESTMENTS IN UNCONSOLIDATED AFFILIATES (Tables)	3 Months Ended
	Mar. 31, 2018
INVESTMENTS IN UNCONSOLIDATED AFFILIATES
Summary of investments in unconsolidated affiliates	The following table summarizes our investments in unconsolidated affiliates: Percentage of Carrying value ownership (in thousands) March 31, December 31, March 31, December 31, 2018 2017 2018 2017 BOSTCO 42.5 % 42.5 % $ 209,270 $ 209,373 Frontera 50 % 50 % 24,760 23,808 Total investments in unconsolidated affiliates $ 234,030 $ 233,181
Schedule of earnings from investments in unconsolidated affiliates (in thousands)	Earnings from investments in unconsolidated affiliates was as follows (in thousands): Three months ended March 31, 2018 2017 BOSTCO $ 1,991 $ 1,706 Frontera 898 854 Total earnings from investments in unconsolidated affiliates $ 2,889 $ 2,560
Schedule of additional capital investments in unconsolidated affiliates (in thousands)	Additional capital investments in unconsolidated affiliates was as follows (in thousands): Three months ended March 31, 2018 2017 BOSTCO $ — $ — Frontera 1,150 2,000 Additional capital investments in unconsolidated affiliates $ 1,150 $ 2,000
Schedule of cash distributions received from unconsolidated affiliates (in thousands)	Cash distributions received from unconsolidated affiliates was as follows (in thousands): Three months ended March 31, 2018 2017 BOSTCO $ 2,094 $ 3,079 Frontera 1,096 1,270 Cash distributions received from unconsolidated affiliates $ 3,190 $ 4,349
Summary of financial information of unconsolidated affiliates (in thousands)	Three months ended March 31, 2018 2017 BOSTCO $ 2,094 $ 3,079 Frontera 1,096 1,270 Cash distributions received from unconsolidated affiliates $ 3,190 $ 4,349 The summarized financial information of our unconsolidated affiliates is as follows (in thousands): Balance sheets: BOSTCO Frontera March 31, December 31, March 31, December 31, 2018 2017 2018 2017 Current assets $ 19,757 $ 24,976 $ 6,553 $ 5,649 Long-term assets 464,219 469,348 45,114 44,292 Current liabilities (7,418) (17,550) (1,992) (2,147) Long-term liabilities (1,315) — (155) (178) Net assets $ 475,243 $ 476,774 $ 49,520 $ 47,616 Statements of operations: BOSTCO Frontera Three months ended Three months ended March 31, March 31, 2018 2017 2018 2017 Revenue $ 16,827 $ 16,630 $ 5,912 $ 5,393 Expenses (12,549) (12,238) (4,116) (3,685) Net earnings $ 4,278 $ 4,392 $ 1,796 $ 1,708

OTHER ASSETS, NET (Tables)

OTHER ASSETS, NET (Tables)	3 Months Ended
	Mar. 31, 2018
OTHER ASSETS, NET
Schedule of other assets, net (in thousands)	Other assets, net are as follows (in thousands): March 31, December 31, 2018 2017 Customer relationships, net of accumulated amortization of $3,041 and $2,294, respectively $ 46,389 $ 47,136 Revolving credit facility unamortized deferred issuance costs, net of accumulated amortization of $6,383 and $5,984, respectively 6,435 6,778 Amounts due under long-term terminaling services agreements 407 460 Unrealized gain on derivative instruments — 576 Deposits and other assets 291 288 $ 53,522 $ 55,238

ACCRUED LIABILITIES (Tables)

ACCRUED LIABILITIES (Tables)	3 Months Ended
	Mar. 31, 2018
ACCRUED LIABILITIES
Schedule of accrued liabilities (in thousands)	Accrued liabilities are as follows (in thousands): March 31, December 31, 2018 2017 Customer advances and deposits $ 6,565 $ 10,265 Accrued property taxes 2,348 1,381 Accrued environmental obligations 1,903 1,855 Interest payable 3,036 982 Accrued expenses and other 3,801 2,943 $ 17,653 $ 17,426

OTHER LIABILITIES (Tables)

OTHER LIABILITIES (Tables)	3 Months Ended
	Mar. 31, 2018
OTHER LIABILITIES
Schedule of other liabilities (in thousands)	Other liabilities are as follows (in thousands): March 31, December 31, 2018 2017 Advance payments received under long-term terminaling services agreements $ 1,574 $ 1,599 Deferred revenue—ethanol blending fees and other projects 2,347 2,034 $ 3,921 $ 3,633

LONG-TERM DEBT (Tables)

LONG-TERM DEBT (Tables)	3 Months Ended
	Mar. 31, 2018
LONG-TERM DEBT
Summary of long term debt	Long-term debt is as follows (in thousands): March 31, December 31, 2018 2017 Revolving credit facility due in 2022 $ 290,200 $ 593,200 6.125% senior notes due in 2026 300,000 — Senior notes unamortized deferred issuance costs, net of accumulated amortization of $103 and $nil, respectively (7,823) — $ 582,377 $ 593,200

PARTNERS' EQUITY (Tables)

PARTNERS' EQUITY (Tables)	3 Months Ended
	Mar. 31, 2018
PARTNERS' EQUITY
Schedule of number of units outstanding	General Common partner units equivalent units Units outstanding at December 31, 2017 16,177,353 330,150 Issuance of common units pursuant to our savings and retention program 23,132 — Contribution of cash by TransMontaigne GP to maintain its 2% general partner interest — 463 Units outstanding at March 31, 2018 16,200,485 330,613

EQUITY-BASED COMPENSATION (Tabl

EQUITY-BASED COMPENSATION (Tables)	3 Months Ended
	Mar. 31, 2018
TransMontaigne LLC-related party
Schedule of long-term incentive plan activity	Weighted Weighted average average Vested price Unvested price Restricted phantom units outstanding at December 31, 2017 91,877 $ 38.91 54,244 $ 38.81 Issuance of units (23,132) $ 39.58 — $ — Units withheld for settlement of withholding taxes (7,980) $ 39.58 — $ — Unit accrual for distributions paid 1,306 $ 38.64 986 $ 38.64 Vesting of units 18,970 $ 36.61 (18,970) $ 36.61 Grant of units 46,362 $ 35.23 33,097 $ 35.23 Restricted phantom units outstanding at March 31, 2018 127,403 $ 37.49 69,357 $ 38.18 Vested and expected to vest at March 31, 2018 196,760 $ 37.74

NET EARNINGS PER LIMITED PART41

NET EARNINGS PER LIMITED PARTNER UNIT (Tables)	3 Months Ended
	Mar. 31, 2018
NET EARNINGS PER LIMITED PARTNER UNIT
Schedule of reconciliation of net earnings to net earnings allocable to limited partners (in thousands)	The following table reconciles net earnings to net earnings allocable to limited partners and sets forth the computation of basic and diluted net earnings per limited partner unit (in thousands, except per unit amounts): Three months ended March 31, 2018 2017 Net earnings $ 12,174 $ 12,954 Less: Distributions payable on behalf of incentive distribution rights (3,595) (2,636) Distributions payable on behalf of general partner interest (259) (239) Earnings allocable to general partner interest less than distributions payable to general partner interest 88 32 Earnings allocable to general partner interest including incentive distribution rights (3,766) (2,843) Net earnings allocable to limited partners per the consolidated statements of operations $ 8,408 $ 10,111 Basic weighted average units 16,291 16,245 Diluted weighted average units 16,322 16,266 Net earnings per limited partner unit—basic $ 0.52 $ 0.62 Net earnings per limited partner unit—diluted $ 0.52 $ 0.62
Schedule of distribution declared per common unit attributable to the periods	Distribution January 1, 2017 through March 31, 2017 $ 0.725 April 1, 2017 through June 30, 2017 $ 0.740 July 1, 2017 through September 30, 2017 $ 0.755 October 1, 2017 through December 31, 2017 $ 0.770 January 1, 2018 through March 31, 2018 $ 0.785

COMMITMENTS AND CONTINGENCIES (

COMMITMENTS AND CONTINGENCIES (Tables)	3 Months Ended
	Mar. 31, 2018
COMMITMENTS AND CONTINGENCIES
Schedule of future minimum lease payments under non-cancelable operating leases (in thousands)	At March 31, 2018, future minimum lease payments under these non‑cancelable operating leases are as follows (in thousands): Years ending December 31: 2018 $ 2,353 2019 3,323 2020 1,990 2021 1,907 2022 962 Thereafter 4,275 $ 14,810

REVENUE FROM CONTRACTS WITH C43

REVENUE FROM CONTRACTS WITH CUSTOMERS (Tables)	3 Months Ended
	Mar. 31, 2018
REVENUE FROM CONTRACTS WITH CUSTOMERS
Revenue disaggregated by category	The following table provides details of our revenue disaggregated by category of revenue (in thousands): Three months ended March 31, 2018 Terminaling services fees: Firm commitments (ASC 840 revenue) $ 38,706 Firm commitments (ASC 606 revenue) 3,427 Total firm commitments revenue 42,133 Ancillary revenue (ASC 606 revenue) 11,058 Total terminaling services fees 53,191 Pipeline transportation fees (ASC 840 revenue) 869 Management fees (ASC 606 revenue) 2,384 Total revenue $ 56,444
Schedule of estimated future ASC 606 revenue by segment	Midwest Terminals and Gulf Coast Pipeline Brownsville River Southeast West Coast Terminals System Terminals Terminals Terminals Terminals Total Remainder of 2018 $ 3,109 $ 92 $ — $ 830 $ — $ 3,213 $ 7,244 2019 625 17 — 970 — 1,652 3,264 2020 — — — 970 — 125 1,095 2021 — — — 531 — 5 536 Thereafter — — — — — — Total estimated ASC 606 revenue $ 3,734 $ 109 $ — $ 3,301 $ — $ 4,995 $ 12,139

BUSINESS SEGMENTS (Tables)

BUSINESS SEGMENTS (Tables)	3 Months Ended
	Mar. 31, 2018
BUSINESS SEGMENTS
Schedule of information related to financial performance of business segments (in thousands)	The financial performance of our business segments is as follows (in thousands): Three months ended March 31, 2018 2017 Gulf Coast Terminals: Terminaling services fees $ 16,173 $ 16,007 Management fees 97 283 Revenue 16,270 16,290 Direct operating costs and expenses (5,832) (5,554) Net margins 10,438 10,736 Midwest Terminals and Pipeline System: Terminaling services fees 2,419 2,403 Pipeline transportation fees 433 433 Revenue 2,852 2,836 Direct operating costs and expenses (712) (712) Net margins 2,140 2,124 Brownsville Terminals: Terminaling services fees 2,066 2,467 Pipeline transportation fees 436 1,283 Management fees 2,104 1,924 Revenue 4,606 5,674 Direct operating costs and expenses (2,041) (2,872) Net margins 2,565 2,802 River Terminals: Terminaling services fees 2,754 2,670 Revenue 2,754 2,670 Direct operating costs and expenses (1,836) (1,650) Net margins 918 1,020 Southeast Terminals: Terminaling services fees 20,239 17,197 Management fees 183 183 Revenue 20,422 17,380 Direct operating costs and expenses (6,619) (5,723) Net margins 13,803 11,657 West Coast Terminals: Terminaling services fees 9,540 — Revenue 9,540 — Direct operating costs and expenses (3,105) — Net margins 6,435 — Total net margins 36,299 28,339 General and administrative expenses (4,981) (3,971) Insurance expenses (1,246) (1,006) Equity-based compensation expense (2,017) (1,817) Depreciation and amortization (11,808) (8,705) Earnings from unconsolidated affiliates 2,889 2,560 Operating income 19,136 15,400 Other expenses (6,962) (2,446) Net earnings $ 12,174 $ 12,954
Schedule of supplemental information about consolidated business segments (in thousands)	Supplemental information about our business segments is summarized below (in thousands): Three months ended March 31, 2018 Midwest Terminals and Gulf Coast Pipeline Brownsville River Southeast West Coast Terminals System Terminals Terminals Terminals Terminals Total Revenue: External customers $ 14,058 $ 2,852 $ 2,488 $ 2,754 $ 20,422 $ 9,540 $ 52,114 Frontera — — 2,118 — — — 2,118 Associated Asphalt, LLC 2,212 — — — — — 2,212 Revenue $ 16,270 $ 2,852 $ 4,606 $ 2,754 $ 20,422 $ 9,540 $ 56,444 Capital expenditures $ 1,366 $ 301 $ 443 $ 547 $ 3,283 $ 563 $ 6,503 Identifiable assets $ 122,564 $ 20,397 $ 41,748 $ 48,941 $ 215,602 $ 276,542 $ 725,794 Cash and cash equivalents 937 Investments in unconsolidated affiliates 234,030 Revolving credit facility unamortized deferred issuance costs, net 6,435 Other 8,422 Total assets $ 975,618 Three months ended March 31, 2017 Midwest Terminals and Gulf Coast Pipeline Brownsville River Southeast West Coast Terminals System Terminals Terminals Terminals Terminals Total Revenue: External customers $ 16,290 $ 2,836 $ 3,904 $ 2,670 $ 17,380 $ — $ 43,080 Frontera — — 1,770 — — — 1,770 Revenue $ 16,290 $ 2,836 $ 5,674 $ 2,670 $ 17,380 $ — $ 44,850 Capital expenditures $ 1,527 $ 222 $ 144 $ 394 $ 7,213 $ — $ 9,500

SUMMARY OF SIGNIFICANT ACCOUN45

SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES - Property (Details)	3 Months Ended
	Mar. 31, 2018
Terminals and pipelines | Minimum
Property, plant and equipment
Estimated useful lives	15 years
Terminals and pipelines | Maximum
Property, plant and equipment
Estimated useful lives	25 years
Furniture, fixtures and equipment | Minimum
Property, plant and equipment
Estimated useful lives	3 years
Furniture, fixtures and equipment | Maximum
Property, plant and equipment
Estimated useful lives	25 years

SUMMARY OF SIGNIFICANT ACCOUN46

SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES - Taxes and Derivatives (Details) - USD ($) $ in Millions	3 Months Ended	12 Months Ended
	Mar. 31, 2018	Dec. 31, 2017
Income taxes
Provision for U.S. federal income taxes	$ 0
Net earnings per limited partner unit
Limited partner interest (as a percent)	98.00%
General partner interest (as a percent)	2.00%	2.00%
Interest rate swap
Accounting for derivative instruments
Notional amount	$ 50	$ 125
Fixed interest rate paid (as a percent)	0.97%	1.01%

TRANSACTIONS WITH AFFILIATES (D

TRANSACTIONS WITH AFFILIATES (Details) - USD ($) $ in Thousands	May 13, 2018	Mar. 31, 2018	Mar. 31, 2017	Dec. 31, 2018	Dec. 31, 2017
Transactions with affiliates
Insurance expense paid		$ 1,246	$ 1,006
Expense of insurance		4,981	3,971
Insurance expenses		$ 1,246	1,006
Omnibus agreement
Transactions with affiliates
Increase in administrative fee, (as a percent)		2.00%
Notice period for termination of service agreement		24 months
Omnibus agreement | Second amended and restated omnibus agreement
Transactions with affiliates
Administrative fee paid					$ 13,700
Omnibus agreement | Third amended and restated omnibus agreement
Transactions with affiliates
Administrative fee paid		$ 3,400	$ 2,900
Omnibus agreement | Third amended and restated omnibus agreement | Subsequent events
Transactions with affiliates
Increase in administrative fee	$ 3,600
Omnibus agreement | Forecast | Third amended and restated omnibus agreement
Transactions with affiliates
Administrative fee paid				$ 8,400
Cost of Engineering and ESOH Groups				$ 8,900

TRANSACTIONS WITH AFFILIATES -

TRANSACTIONS WITH AFFILIATES - Agreements (Details) $ in Millions	3 Months Ended
	Mar. 31, 2018USD ($)bbl	Mar. 31, 2017USD ($)	Apr. 01, 2011
June 2019 terminaling services agreement-Brownsville LLC | Frontera | Brownsville terminals
Transactions with affiliates
Notice period for termination of service agreement	90 days
Storage capacity agreed to be provided (in barrels) | bbl	301,000
Throughput revenue	$ 0.6	$ 0.3
June 2020 terminaling services agreement-Brownsville LLC | Frontera | Brownsville terminals
Transactions with affiliates
Notice period for termination of service agreement	180 days
Operations and reimbursement agreement-Frontera | Frontera
Transactions with affiliates
Ownership interest in joint venture (as a percent)			50.00%
Revenue recognized	$ 1.5	1.4
Terminaling services agreement- Gulf Coast Terminals | Associated Asphalt Marketing, LLC | Gulf Coast Terminals
Transactions with affiliates
Automatic renewal period of service agreement	2 years
Notice period for termination of service agreement	180 days
Storage capacity agreed to be provided (in barrels) | bbl	750,000
Throughput revenue	$ 2.2	$ 0

BUSINESS COMBINATION AND TERM49

BUSINESS COMBINATION AND TERMINAL ACQUISITION AND DISPOSITION - Business Combinations (Details) $ in Thousands, bbl in Millions	Dec. 15, 2017USD ($)itembbl	Mar. 31, 2018USD ($)	Dec. 31, 2017USD ($)
Final purchase price and assessment of the fair value of the assets acquired and liabilities assumed in the business combination
Goodwill		$ 9,428	$ 9,428
West Coast terminals
Business Acquisition [Line Items]
Total purchase price	$ 276,800
Number of terminals | item	2
Number of storage tanks | item	64
Storage capacity (in barrels) | bbl	5
Final purchase price and assessment of the fair value of the assets acquired and liabilities assumed in the business combination
Other current assets	$ 1,037
Property, plant and equipment, net	228,000
Goodwill	943
Customer relationships	47,000
Total assets acquired	276,980
Environmental obligation	220
Total liabilities assumed	220
Allocated purchase price	$ 276,760

CONCENTRATION OF CREDIT RISK 50

CONCENTRATION OF CREDIT RISK AND TRADE ACCOUNTS RECEIVABLE (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2018	Mar. 31, 2017	Dec. 31, 2017
Concentration of credit risk and trade accounts receivable
Contract revenue	$ 3,400
Trade accounts receivable	11,625		$ 11,128
Less allowance for doubtful accounts	(109)		(111)
Trade accounts receivable, net	$ 11,516		$ 11,017
NGL Energy Partners LP
Concentration of credit risk and trade accounts receivable
Percentage of total revenue generated by major customer	22.00%	26.00%
Castleton Commodities International LLC
Concentration of credit risk and trade accounts receivable
Percentage of total revenue generated by major customer	11.00%	13.00%
RaceTrac Petroleum Inc
Concentration of credit risk and trade accounts receivable
Percentage of total revenue generated by major customer	11.00%	12.00%

OTHER CURRENT ASSETS (Details)

OTHER CURRENT ASSETS (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2018	Dec. 31, 2017
OTHER CURRENT ASSETS
Prepaid insurance	$ 3,997	$ 4,151
Amounts due from insurance companies	1,933	1,981
Additive detergent	1,730	1,715
Unrealized gain on derivative instrument	534
Deposits and other assets	4,151	12,807
Other current assets	12,345	20,654
Reimbursements from insurance companies	$ 100
Deposits paid		$ 10,200

PROPERTY, PLANT AND EQUIPMENT52

PROPERTY, PLANT AND EQUIPMENT, NET (Details) - USD ($) $ in Thousands	Mar. 31, 2018	Dec. 31, 2017
Property, plant and equipment, net
Property, plant and equipment, gross	$ 1,000,790	$ 994,744
Less accumulated depreciation	(350,753)	(339,691)
Property, plant and equipment, net	650,037	655,053
Land
Property, plant and equipment, net
Property, plant and equipment, gross	83,451	83,310
Terminals, pipelines and equipment
Property, plant and equipment, net
Property, plant and equipment, gross	889,608	885,429
Furniture, fixtures and equipment
Property, plant and equipment, net
Property, plant and equipment, gross	4,515	4,430
Construction in progress
Property, plant and equipment, net
Property, plant and equipment, gross	$ 23,216	$ 21,575

GOODWILL (Details)

GOODWILL (Details) - USD ($) $ in Thousands	3 Months Ended	12 Months Ended
	Mar. 31, 2018	Dec. 31, 2017
Goodwill
Goodwill	$ 9,428	$ 9,428
Brownsville terminals
Goodwill
Goodwill	8,485	8,485
Impairment charges	0	0
West Coast terminals
Goodwill
Goodwill	$ 943	$ 943

INVESTMENTS IN UNCONSOLIDATED54

INVESTMENTS IN UNCONSOLIDATED AFFILIATES (Details) $ in Thousands, bbl in Millions	3 Months Ended
	Mar. 31, 2018USD ($)bbl	Mar. 31, 2017USD ($)	Dec. 31, 2017USD ($)
INVESTMENTS IN UNCONSOLIDATED AFFILIATES
Carrying value of investments in unconsolidated affiliates	$ 234,030		$ 233,181
Earnings from unconsolidated affiliates	2,889	$ 2,560
Additional capital investments in unconsolidated affiliates	1,150	2,000
Cash distributions received from unconsolidated affiliates	$ 3,190	4,349
BOSTCO
INVESTMENTS IN UNCONSOLIDATED AFFILIATES
Storage capacity | bbl	7.1
Percentage of ownership	42.50%		42.50%
Carrying value of investments in unconsolidated affiliates	$ 209,270		$ 209,373
Excess investment	7,000		7,000
Earnings from unconsolidated affiliates	1,991	1,706
Cash distributions received from unconsolidated affiliates	2,094	3,079
Balance sheets:
Current assets	19,757		24,976
Long-term assets	464,219		469,348
Current liabilities	(7,418)		(17,550)
Long-term liabilities	(1,315)
Net assets	475,243		$ 476,774
Statements of comprehensive income (loss):
Revenue	16,827	16,630
Expenses	(12,549)	(12,238)
Net earnings	$ 4,278	4,392
Frontera
INVESTMENTS IN UNCONSOLIDATED AFFILIATES
Storage capacity | bbl	1.5
Percentage of ownership	50.00%		50.00%
Carrying value of investments in unconsolidated affiliates	$ 24,760		$ 23,808
Earnings from unconsolidated affiliates	898	854
Additional capital investments in unconsolidated affiliates	1,150	2,000
Cash distributions received from unconsolidated affiliates	1,096	1,270
Balance sheets:
Current assets	6,553		5,649
Long-term assets	45,114		44,292
Current liabilities	(1,992)		(2,147)
Long-term liabilities	(155)		(178)
Net assets	49,520		$ 47,616
Statements of comprehensive income (loss):
Revenue	5,912	5,393
Expenses	(4,116)	(3,685)
Net earnings	$ 1,796	$ 1,708
Class A Member Ownership Interest | BOSTCO
INVESTMENTS IN UNCONSOLIDATED AFFILIATES
Cash distributions, allocation percentage	96.50%
Class B Member Ownership Interest | BOSTCO
INVESTMENTS IN UNCONSOLIDATED AFFILIATES
Cash distributions, allocation percentage	3.50%

OTHER ASSETS, NET (Details)

OTHER ASSETS, NET (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2018	Dec. 31, 2017
OTHER ASSETS, NET
Customer relationships, net of accumulated amortization of $3,041 and $2,294, respectively	$ 46,389	$ 47,136
Revolving credit facility unamortized deferred issuance costs, net of accumulated amortization of $6,383 and $5,984, respectively	6,435	6,778
Amounts due under long-term terminaling services agreements	407	460
Unrealized gain on derivative instruments		576
Deposits and other assets	291	288
Other assets, net	53,522	55,238
Accumulated amortization of customer relationships	3,041	2,294
Accumulated amortization of deferred financing costs	$ 6,383	$ 5,984
Amortization period of customer relationships	20 years

ACCRUED LIABILITIES (Details)

ACCRUED LIABILITIES (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2018	Dec. 31, 2017
ACCRUED LIABILITIES
Customer advances and deposits	$ 6,565	$ 10,265
Accrued property taxes	2,348	1,381
Accrued environmental obligations	1,903	1,855
Interest payable	3,036	982
Accrued expenses and other	3,801	2,943
Accrued liabilities	17,653	$ 17,426
Contract liabilities	600
Revenue recognized from contract liabilities	500
Accrued environmental obligations
Payments	(100)
Increase in estimate	$ 200

OTHER LIABILITIES (Details)

OTHER LIABILITIES (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2018	Mar. 31, 2017	Dec. 31, 2017
OTHER LIABILITIES
Advance payments received under long-term terminaling services agreements	$ 1,574		$ 1,599
Deferred revenue-ethanol blending fees and other projects	2,347		2,034
Other liabilities	3,921		$ 3,633
Recognized revenue on a straight line basis for completed projects	200	$ 100
Contract liabilities	500
Revenue recognized from contract liabilities	$ 200

LONG-TERM DEBT (Details)

LONG-TERM DEBT (Details) $ in Thousands	3 Months Ended
	Mar. 31, 2018USD ($)	Mar. 31, 2017	Feb. 12, 2018USD ($)	Dec. 31, 2017USD ($)
Long-term debt
Senior notes unamortized deferred issuance costs	$ (7,823)
Total long-term debt	582,377			$ 593,200
Accumulated amortization	$ 103			0
TLP Finance Corp
Long-term debt
Ownership interest in subsidiary (as a percent)	100.00%
TransMontaigne Operating Company L.P
Long-term debt
Ownership interest in subsidiary (as a percent)	100.00%
Amount of independent assets	$ 0
Amount of independent operations	0
Restricted net assets	0
6.125% senior notes due in 2026
Long-term debt
Total long-term debt	$ 300,000
Interest (as percent)			6.125%
Sale of senior notes			$ 300,000
Credit facility
Long-term debt
Weighted average interest rate on borrowings (as a percent)	4.60%	3.30%
Outstanding borrowings under credit facility	$ 290,200			593,200
Outstanding borrowings under letters of credit	$ 400			400
Credit facility | Minimum
Long-term debt
Commitment fee on unused amount of commitments (as a percent)	0.375%
Credit facility | Minimum | LIBOR
Long-term debt
Margin interest above reference rate (as a percent)	1.75%
Credit facility | Minimum | Base Rate
Long-term debt
Margin interest above reference rate (as a percent)	0.75%
Credit facility | Maximum
Long-term debt
Commitment fee on unused amount of commitments (as a percent)	0.50%
Credit facility | Maximum | LIBOR
Long-term debt
Margin interest above reference rate (as a percent)	2.75%
Credit facility | Maximum | Base Rate
Long-term debt
Margin interest above reference rate (as a percent)	1.75%
Revolving credit facility due March 13, 2022
Long-term debt
Total long-term debt	$ 290,200			$ 593,200
Maximum borrowing capacity	$ 850,000
Other investments as a percentage of consolidated net tangible assets	5.00%
Permitted JV investments subject to liquidity	$ 175,000
Revolving credit facility due March 13, 2022 | Maximum
Long-term debt
Leverage ratio	5.25
Senior secured leverage ratio	3.75

PARTNERS' EQUITY (Details)

PARTNERS' EQUITY (Details) - shares	3 Months Ended	12 Months Ended
	Mar. 31, 2018	Dec. 31, 2017
Changes in number of units outstanding
Issuance of common units pursuant to our savings and retention program (in units)	23,132	33,205
General partner interest (as a percent)	2.00%	2.00%
Partners' Capital Account, Units, Treasury Units Reissued		6,498
Common units
Changes in number of units outstanding
Units outstanding at the beginning of the period	16,177,353
Issuance of common units pursuant to our savings and retention program (in units)	23,132
Units outstanding at the end of the period	16,200,485	16,177,353
General partner interest
Changes in number of units outstanding
Units outstanding at the beginning of the period	330,150
Contribution of cash by TransMontaigne GP to maintain its 2% general partner interest	463
Units outstanding at the end of the period	330,613	330,150

EQUITY-BASED COMPENSATION (Deta

EQUITY-BASED COMPENSATION (Details) - USD ($)	3 Months Ended
	Mar. 31, 2018	Mar. 31, 2017
Additional disclosures
Equity-based compensation	$ 2,017,000	$ 1,817,000
TLP Management Services LLC
Additional disclosures
Equity-based compensation	$ 1,900,000	1,700,000
Restricted phantom units | TransMontaigne LLC-related party
Incentive plan activity
Units, unvested, outstanding at the beginning of the period	54,244
Unit accrual for distributions paid (in units)	986
Vesting (in units)	(18,970)
Grant (in units)	46,362
Units, unvested, outstanding at the end of the period	69,357
Outstanding at the beginning of the period (in dollars per unit)	$ 38.81
Units accrual for distributions paid (in dollars per unit)	38.64
Vesting (in dollars per unit)	36.61
Grant (in dollars per unit)	35.23
Outstanding at the end of the period (in dollars per unit)	$ 38.18
Units outstanding at the beginning of the period (in units)	91,877
Issuance (in units)	(23,132)
Units withheld for settlement of withholding taxes (in units)	(7,980)
Unit accrual for distributions (in units)	1,306
Vesting (in units)	18,970
Grant (in units)	33,097
Units outstanding at the end of the period (in units)	127,403
Vested and expected to vest (in units)	196,760
Outstanding at the beginning of the period (in dollars per unit)	$ 38.91
Issuance (in dollars per unit)	39.58
Units withheld for settlement of withholding taxes (in dollars)	39.58
Unit accrual for distributions paid (in dollars per unit)	38.64
Vesting (in dollars per unit)	36.61
Grant (in dollars per unit)	35.23
Outstanding at the end of the period (in dollars per unit)	37.49
Vested and expected to vest (in dollars per unit)	$ 37.74
Restricted phantom units | TLP Management Services LLC
Additional disclosures
Nonemployee service, unrecognized equity-based compensation expense	$ 2,500,000
Expected term (in years)	1 year 3 months 4 days
Vesting (as a percent)	50.00%
Restricted phantom units | TLP Management Services LLC | Vesting Tranche One
Additional disclosures
Earlier vesting, age threshold (in years)	60 years
Restricted phantom units | TLP Management Services LLC | Vesting Tranche Two
Additional disclosures
Earlier vesting, age threshold (in years)	55 years
Earlier vesting, length of service threshold (in years)	10 years
Restricted phantom units | TLP Management Services LLC | Vesting Tranche Three
Additional disclosures
Earlier vesting, age threshold (in years)	50 years
Earlier vesting, length of service threshold (in years)	20 years
Long-term incentive plan
Long-term incentive plan
Authorized units	750,000
Additional disclosures
Equity-based compensation	$ 68,000	$ 68,000
Long-term incentive plan | Common units | TLP Management Services LLC
Incentive plan activity
Outstanding at the end of the period (in dollars per unit)	$ 0

NET EARNINGS PER LIMITED PART61

NET EARNINGS PER LIMITED PARTNER UNIT (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended					12 Months Ended
	Mar. 31, 2018	Dec. 31, 2017	Sep. 30, 2017	Jun. 30, 2017	Mar. 31, 2017	Dec. 31, 2017
NET EARNINGS PER LIMITED PARTNER UNIT
Net earnings	$ 12,174				$ 12,954	$ 48,493
Less:
Distributions payable on behalf of incentive distribution rights	(3,595)				(2,636)
Distributions payable on behalf of general partner interest	(259)				(239)
Earnings allocable to general partner interest less than distributions payable to general partner interest	88				32
Earnings allocable to general partner interest including incentive distribution rights	(3,766)				(2,843)
Net earnings allocable to limited partners	$ 8,408				$ 10,111
Basic weighted average units	16,291				16,245
Diluted weighted average units	16,322				16,266
Net earnings per limited partner unit-basic (in dollars per unit)	$ 0.52				$ 0.62
Net earnings per limited partner unit-diluted (in dollars per unit)	$ 0.52				0.62
Period for declaration of distribution, maximum	45 days
Distribution declared per common unit (in dollars per unit)	$ 0.785	$ 0.770	$ 0.755	$ 0.740	$ 0.725

COMMITMENTS AND CONTINGENCIES62

COMMITMENTS AND CONTINGENCIES (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2018	Mar. 31, 2017
COMMITMENTS AND CONTINGENCIES
Contractual commitments for supply of services, labor and materials	$ 23,200
Future minimum lease payments under non-cancelable operating leases
2,018	2,353
2,019	3,323
2,020	1,990
2,021	1,907
2,022	962
Thereafter	4,275
Total	14,810
Expected minimum sublease rentals to be received	8,600
Rental expense under operating leases	$ 500	$ 900

REVENUE FROM CONTRACTS WITH C63

REVENUE FROM CONTRACTS WITH CUSTOMERS - Disaggregated (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2018	Mar. 31, 2017
Disaggregation of Revenue [Line Items]
Total revenue	$ 56,444	$ 44,850
Firm commitments (ASC 840 revenue)
Disaggregation of Revenue [Line Items]
Total revenue	38,706
Firm commitments (ASC 606 revenue)
Disaggregation of Revenue [Line Items]
Total revenue	3,427
Total firm commitments revenue
Disaggregation of Revenue [Line Items]
Total revenue	42,133
Ancillary revenue (ASC 606 revenue)
Disaggregation of Revenue [Line Items]
Total revenue	11,058
Total terminaling services fees
Disaggregation of Revenue [Line Items]
Total revenue	53,191
Pipeline transportation fees (ASC 840 revenue)
Disaggregation of Revenue [Line Items]
Total revenue	869
Management fees (ASC 606 revenue)
Disaggregation of Revenue [Line Items]
Total revenue	$ 2,384

REVENUE FROM CONTRACTS WITH C64

REVENUE FROM CONTRACTS WITH CUSTOMERS - Contract Revenue (Details) $ in Thousands	3 Months Ended
	Mar. 31, 2018USD ($)
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Remaining Performance Obligation	$ 12,139
Estimated revenue in accordance with ASC 840, remainder of 2018	113,100
Estimated revenue in accordance with ASC 840, 2019	121,400
Estimated revenue in accordance with ASC 840, 2020	100,700
Estimated revenue in accordance with ASC 840, 2021	79,400
Estimated revenue in accordance with ASC 840, therafter	64,500
Gulf Coast Terminals
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Remaining Performance Obligation	3,734
Midwest Terminals and Pipeline System
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Remaining Performance Obligation	109
River terminals
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Remaining Performance Obligation	3,301
West Coast terminals
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Remaining Performance Obligation	4,995
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2018-04-01
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Remaining Performance Obligation	$ 7,244
Remaining Performance Obligation, Expected Timing of Satisfaction, Period	9 months
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2018-04-01 | Gulf Coast Terminals
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Remaining Performance Obligation	$ 3,109
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2018-04-01 | Midwest Terminals and Pipeline System
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Remaining Performance Obligation	92
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2018-04-01 | River terminals
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Remaining Performance Obligation	830
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2018-04-01 | West Coast terminals
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Remaining Performance Obligation	3,213
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2019-01-01
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Remaining Performance Obligation	$ 3,264
Remaining Performance Obligation, Expected Timing of Satisfaction, Period	1 year
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2019-01-01 | Gulf Coast Terminals
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Remaining Performance Obligation	$ 625
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2019-01-01 | Midwest Terminals and Pipeline System
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Remaining Performance Obligation	17
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2019-01-01 | River terminals
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Remaining Performance Obligation	970
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2019-01-01 | West Coast terminals
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Remaining Performance Obligation	1,652
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2020-01-01
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Remaining Performance Obligation	$ 1,095
Remaining Performance Obligation, Expected Timing of Satisfaction, Period	1 year
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2020-01-01 | River terminals
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Remaining Performance Obligation	$ 970
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2020-01-01 | West Coast terminals
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Remaining Performance Obligation	125
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2021-01-01
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Remaining Performance Obligation	$ 536
Remaining Performance Obligation, Expected Timing of Satisfaction, Period	0 years
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2021-01-01 | River terminals
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Remaining Performance Obligation	$ 531
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2021-01-01 | West Coast terminals
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Remaining Performance Obligation	$ 5

BUSINESS SEGMENTS (Details)

BUSINESS SEGMENTS (Details) - USD ($) $ in Thousands	3 Months Ended		12 Months Ended
	Mar. 31, 2018	Mar. 31, 2017	Dec. 31, 2017	Dec. 31, 2016
Segments of business
Total revenue	$ 56,444	$ 44,850
Direct operating costs and expenses	(20,145)	(16,511)
Net margins	36,299	28,339
General and administrative expenses	(4,981)	(3,971)
Insurance expenses	(1,246)	(1,006)
Equity-based compensation expense	(2,017)	(1,817)
Depreciation and amortization	(11,808)	(8,705)
Earnings from unconsolidated affiliates	2,889	2,560
Operating income	19,136	15,400
Other expenses	(6,962)	(2,446)
Net earnings	12,174	12,954	$ 48,493
Capital expenditures	6,503	9,500
Identifiable assets	725,794
Cash and cash equivalents	937	641	923	$ 593
Investments in unconsolidated affiliates	234,030		233,181
Deferred issuance costs	6,435		6,778
Other	8,422
TOTAL ASSETS	975,618		$ 987,003
External customers
Segments of business
Total revenue	52,114	43,080
Affiliates
Segments of business
Total revenue	4,330	1,770
Affiliates | Frontera
Segments of business
Total revenue	2,118	1,770
Affiliates | Associated Asphalt Marketing, LLC
Segments of business
Total revenue	2,212
Gulf Coast Terminals
Segments of business
Total revenue	16,270	16,290
Direct operating costs and expenses	(5,832)	(5,554)
Net margins	10,438	10,736
Capital expenditures	1,366	1,527
Identifiable assets	122,564
Gulf Coast Terminals | External customers
Segments of business
Total revenue	14,058	16,290
Gulf Coast Terminals | Affiliates | Associated Asphalt Marketing, LLC
Segments of business
Total revenue	2,212
Midwest Terminals and Pipeline System
Segments of business
Total revenue	2,852	2,836
Direct operating costs and expenses	(712)	(712)
Net margins	2,140	2,124
Capital expenditures	301	222
Identifiable assets	20,397
Midwest Terminals and Pipeline System | External customers
Segments of business
Total revenue	2,852	2,836
Brownsville terminals
Segments of business
Total revenue	4,606	5,674
Direct operating costs and expenses	(2,041)	(2,872)
Net margins	2,565	2,802
Capital expenditures	443	144
Identifiable assets	41,748
Brownsville terminals | External customers
Segments of business
Total revenue	2,488	3,904
Brownsville terminals | Affiliates | Frontera
Segments of business
Total revenue	2,118	1,770
River terminals
Segments of business
Total revenue	2,754	2,670
Direct operating costs and expenses	(1,836)	(1,650)
Net margins	918	1,020
Capital expenditures	547	394
Identifiable assets	48,941
River terminals | External customers
Segments of business
Total revenue	2,754	2,670
Southeast terminals
Segments of business
Total revenue	20,422	17,380
Direct operating costs and expenses	(6,619)	(5,723)
Net margins	13,803	11,657
Capital expenditures	3,283	7,213
Identifiable assets	215,602
Southeast terminals | External customers
Segments of business
Total revenue	20,422	17,380
West Coast terminals
Segments of business
Total revenue	9,540
Direct operating costs and expenses	(3,105)
Net margins	6,435
Capital expenditures	563
Identifiable assets	276,542
West Coast terminals | External customers
Segments of business
Total revenue	9,540
Terminaling services fees | Gulf Coast Terminals
Segments of business
Total revenue	16,173	16,007
Terminaling services fees | Midwest Terminals and Pipeline System
Segments of business
Total revenue	2,419	2,403
Terminaling services fees | Brownsville terminals
Segments of business
Total revenue	2,066	2,467
Terminaling services fees | River terminals
Segments of business
Total revenue	2,754	2,670
Terminaling services fees | Southeast terminals
Segments of business
Total revenue	20,239	17,197
Terminaling services fees | West Coast terminals
Segments of business
Total revenue	9,540
Total firm commitments revenue
Segments of business
Total revenue	42,133
Ancillary revenue (ASC 606 revenue)
Segments of business
Total revenue	11,058
Total terminaling services fees
Segments of business
Total revenue	53,191
Pipeline transportation fees (ASC 840 revenue)
Segments of business
Total revenue	869
Pipeline transportation fees (ASC 840 revenue) | Midwest Terminals and Pipeline System
Segments of business
Total revenue	433	433
Pipeline transportation fees (ASC 840 revenue) | Brownsville terminals
Segments of business
Total revenue	436	1,283
Management fees (ASC 606 revenue)
Segments of business
Total revenue	2,384
Management fees (ASC 606 revenue) | Gulf Coast Terminals
Segments of business
Total revenue	97	283
Management fees (ASC 606 revenue) | Brownsville terminals
Segments of business
Total revenue	2,104	1,924
Management fees (ASC 606 revenue) | Southeast terminals
Segments of business
Total revenue	$ 183	$ 183

SUBSEQUENT EVENT (Details)

SUBSEQUENT EVENT (Details) - USD ($) $ / shares in Units, $ in Millions	May 13, 2018	May 08, 2018	Apr. 17, 2018	Mar. 31, 2018	Dec. 31, 2017	Sep. 30, 2017	Jun. 30, 2017	Mar. 31, 2017
Subsequent Events
Distribution announced per unit (in dollars per unit)				$ 0.785	$ 0.770	$ 0.755	$ 0.740	$ 0.725
Subsequent events
Subsequent Events
Distribution announced per unit (in dollars per unit)			$ 0.785
Distribution paid per unit (in dollars per unit)		$ 0.755
Omnibus agreement | Third amended and restated omnibus agreement | Subsequent events
Subsequent Events
Increase in administrative fee	$ 3.6