Document and Entity Information	9 Months Ended
Document and Entity Information	Sep. 30, 2019 shares
Document and Entity Information
Document Type	10-Q
Entity Registrant Name	TransMontaigne Partners LLC
Document Period End Date	Sep. 30, 2019
Current Fiscal Year End Date	--12-31
Entity Current Reporting Status	No
Entity Filer Category	Accelerated Filer
Entity Small Business	false
Entity Emerging Growth Company	false
Entity Shell Company	false
Entity Common Stock, Shares Outstanding	0
Entity Central Index Key	0001319229
Document Fiscal Year Focus	2019
Document Fiscal Period Focus	Q3
Amendment Flag	false

Consolidated balance sheets - USD ($) $ in Thousands	Sep. 30, 2019	Dec. 31, 2018
Current assets:
Cash and cash equivalents	$ 348	$ 1,026
Trade accounts receivable, net	14,510	14,049
Due from affiliates	2,110	1,953
Other current assets	5,929	8,097
Total current assets	22,897	25,125
Property, plant and equipment, net	708,561	689,170
Goodwill	9,428	9,428
Investments in unconsolidated affiliates	224,928	227,031
Right-of-use assets, operating leases	36,030
Other assets, net	49,606	51,254
TOTAL ASSETS	1,051,450	1,002,008
Current liabilities:
Trade accounts payable	15,525	28,212
Operating lease liabilities	2,997
Accrued liabilities	29,420	31,946
Total current liabilities	47,942	60,158
Other liabilities	5,483	4,643
Long-term operating lease liabilities	35,150
Long-term debt	636,147	598,622
Total liabilities	724,722	663,423
Commitments and contingencies (Note 13)
Equity:
Common units - 16,229,123 issued and outstanding at December 31, 2018		285,095
General partner interest - 2% interest with 331,206 equivalent units outstanding at December 31, 2018		53,490
Member interest	326,728
Total equity	326,728	338,585
TOTAL LIABILITIES AND EQUITY	$ 1,051,450	$ 1,002,008

Consolidated balance sheets (Parenthetical)	12 Months Ended
Consolidated balance sheets (Parenthetical)	Dec. 31, 2018 shares
Common unitholders, units issued	16,229,123
Common unitholders, units outstanding	16,229,123
General partner interest, equivalent units outstanding	331,206
TransMontaigne GP
General partner interest (as a percent)	2.00%

Consolidated statements of operations - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2019	Sep. 30, 2018	Sep. 30, 2019	Sep. 30, 2018
Revenue:
Total revenue	$ 66,573	$ 57,752	$ 192,810	$ 171,305
Costs and expenses:
Operating	(24,395)	(23,514)	(76,184)	(71,578)
General and administrative expenses	(4,603)	(4,823)	(17,979)	(16,322)
Insurance expenses	(1,240)	(1,227)	(3,819)	(3,744)
Deferred compensation expense	(376)	(483)	(1,469)	(2,941)
Depreciation and amortization	(13,362)	(12,375)	(39,121)	(37,471)
Total costs and expenses	(43,976)	(42,422)	(138,572)	(132,056)
Earnings from unconsolidated affiliates	1,476	1,862	3,841	7,195
Gain from insurance proceeds			3,351
Operating income	24,073	17,192	61,430	46,444
Other expenses:
Interest expense	(9,107)	(8,608)	(27,657)	(23,342)
Amortization of deferred debt issuance costs	(636)	(622)	(2,018)	(2,412)
Total other expenses	(9,743)	(9,230)	(29,675)	(25,754)
Net earnings	14,330	7,962	31,755	20,690
External customers
Revenue:
Total revenue	59,688	53,006	171,292	156,499
Affiliate customers
Revenue:
Total revenue	$ 6,885	$ 4,746	$ 21,518	$ 14,806

Consolidated statements of equity - USD ($) $ in Thousands	Common units	General partner interest	Member interest	Total
Balance at Dec. 31, 2017	$ 308,495	$ 53,448		$ 361,943
Increase (Decrease) in Partners' Capital
Distributions to unitholders	(38,090)	(11,485)		(49,575)
Equity-based compensation	2,941			2,941
Settlement of tax withholdings on equity-based compensation	(658)			(658)
Contribution of cash by TransMontaigne GP to maintain its 2% general partner interest		34		34
Contribution from TLP Holdings	12,703			12,703
Net earnings	8,997	11,693		20,690
Balance at Sep. 30, 2018	294,388	53,690		348,078
Balance at Jun. 30, 2018	298,240	53,656		351,896
Increase (Decrease) in Partners' Capital
Distributions to unitholders	(12,897)	(4,021)		(16,918)
Equity-based compensation	483			483
Contribution from TLP Holdings	4,655			4,655
Net earnings	3,907	4,055		7,962
Balance at Sep. 30, 2018	294,388	53,690		348,078
Balance at Dec. 31, 2018	285,095	53,490		338,585
Increase (Decrease) in Partners' Capital
Distributions to unitholders	(13,064)	(4,186)		(17,250)
Equity-based compensation	45			45
Purchase of common units and conversion to member interest	(279,895)	(51,978)	$ 331,873
Reclassification of outstanding equity-based compensation to liability			(3,346)	(3,346)
Contribution from TLP Holdings	4,829			4,829
Distributions to TLP Finance			(27,890)	(27,890)
Net earnings	$ 2,990	$ 2,674	26,091	31,755
Balance at Sep. 30, 2019			326,728	326,728
Balance at Jun. 30, 2019			325,912	325,912
Increase (Decrease) in Partners' Capital
Distributions to TLP Finance			(13,514)	(13,514)
Net earnings			14,330	14,330
Balance at Sep. 30, 2019			$ 326,728	$ 326,728

Consolidated statements of equity (Parenthetical) - shares	9 Months Ended	12 Months Ended
	Sep. 30, 2018	Dec. 31, 2018
Issuance of common units pursuant to our savings and retention program (in units)	44,798
TransMontaigne GP
General partner interest (as a percent)	2.00%	2.00%

Consolidated statements of cash flows - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2019	Sep. 30, 2018	Sep. 30, 2019	Sep. 30, 2018
Cash flows from operating activities:
Net earnings	$ 14,330	$ 7,962	$ 31,755	$ 20,690
Adjustments to reconcile net earnings to net cash provided by operating activities:
Depreciation and amortization	13,362	12,375	39,121	37,471
Earnings from unconsolidated affiliates	(1,476)	(1,862)	(3,841)	(7,195)
Distributions from unconsolidated affiliates	2,735	5,007	8,749	12,168
Equity-based compensation		483	45	2,941
Amortization of deferred debt issuance costs	636	622	2,018	2,412
Amortization of deferred revenue	178	(119)	(29)	(455)
Unrealized loss on derivative instruments	161	144	815	271
Gain from insurance proceeds			3,351
Changes in operating assets and liabilities:
Trade accounts receivable, net	1,414	(2,455)	(461)	(1,959)
Due from affiliates	(185)	2,683	(47)	995
Other current assets	1,471	1,265	265	3,537
Amounts due under long-term terminaling services agreements, net	220	171	807	375
Right-of-use assets, operating leases	655		1,903
Deposits			10	(1)
Other assets, net	(107)		328
Trade accounts payable	113	559	(4,125)	(237)
Accrued liabilities	(3,376)	(414)	(6,545)	7,233
Operating lease liabilities	(457)		(1,450)
Net cash provided by operating activities	29,674	26,421	65,967	78,246
Cash flows from investing activities:
Investments in unconsolidated affiliates	(1,504)		(2,805)	(1,264)
Return of investment in unconsolidated affiliates				850
Capital expenditures	(18,120)	(16,527)	(65,417)	(38,518)
Proceeds from sale of assets				10,025
Proceeds from insurance claims			4,988
Net cash used in investing activities	(19,624)	(16,527)	(63,234)	(28,907)
Cash flows from financing activities:
Proceeds from senior notes				300,000
Borrowings under revolving credit facility	36,800	37,300	134,000	122,800
Repayments under revolving credit facility	(33,600)	(32,600)	(97,100)	(425,000)
Debt issuance costs				(7,871)
Taxes paid for equity compensation awards				(658)
Distributions paid to unitholders		(16,918)	(17,250)	(49,575)
Distributions to TLP Finance	(13,514)		(27,890)
Contribution from TLP Holdings and TransMontaigne GP		4,655	4,829	12,737
Net cash used in financing activities	(10,314)	(7,563)	(3,411)	(47,567)
Increase (decrease) in cash and cash equivalents	(264)	2,331	(678)	1,772
Cash and cash equivalents at beginning of period	612	410	1,026	969
Cash and cash equivalents at end of period	348	2,741	348	2,741
Supplemental disclosures of cash flow information:
Cash paid for interest	13,564	13,159	31,526	20,790
Property, plant and equipment acquired with accounts payable	$ 10,991	$ 9,064	$ 10,991	$ 9,064

SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES

9 Months Ended

Sep. 30, 2019

SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES

SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES

(1) SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES

(a) Nature of business

TransMontaigne Partners LLC (“we,” “us,” “our,” “the Company”) provides 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 were originally formed as TransMontaigne Partners L.P. (“the Partnership”) in February 2005 as a Delaware limited partnership. Through February 26, 2019, the Partnership’s common units were listed and publicly traded on the New York Stock Exchange under the symbol “TLP”. The Partnership was controlled by a general partner, TransMontaigne GP L.L.C. (“TransMontaigne GP”), which was an indirect, controlled subsidiary of ArcLight Energy Partners Fund VI, L.P. (“ArcLight”). TransMontaigne GP also held the Partnership’s incentive distribution rights, which were non‑voting limited partner interests with the rights set forth in the First Amended and Restated Agreement of Limited Partnership of the Partnership, dated as of May 27, 2005, as amended from time to time.

On February 26, 2019, an affiliate of ArcLight completed its previously announced acquisition of all of the Partnership’s outstanding publicly traded common units not already held by ArcLight and its affiliates by way of our merger (the “Merger”) with a wholly owned subsidiary of TLP Finance Holdings, LLC (“TLP Finance”), an indirect controlled subsidiary of Arclight. At the effective time of the Merger, each of the Partnership’s general partner units issued and outstanding immediately prior to the acquisition effective time was converted into (i)(a) one Partnership common unit, and (b) in aggregate, a non-economic general partner interest in the Partnership, (ii) each of the Partnership’s incentive distribution rights issued and outstanding immediately prior to the acquisition effective time was converted into 100 Partnership common units, (iii) our general partner distributed its common units in the Partnership (the “Transferred GP Units”) to TLP Acquisition Holdings, LLC, a Delaware limited liability company (“TLP Holdings”), and TLP Holdings contributed the Transferred GP Units to TLP Finance, (iv) the Partnership converted into the Company (a Delaware limited liability company) pursuant to Section 17-219 of the Delaware Limited Partnership Act and changed its name to “TransMontaigne Partners LLC”, and all of our common units owned by TLP Finance were converted into limited liability company interests (“member interest”), (v) the non-economic interest in the Company owned by our general partner was automatically cancelled and ceased to exist and our general partner merged with and into the Company with the Company surviving, and (vi) the Company became 100% owned by TLP Finance (the transactions described in the foregoing clauses (i) through (vi), collectively with the Merger, the “Take-Private Transaction”).

As a result of the Take-Private Transaction, our common units ceased to be publicly traded, and our common units are no longer listed on the New York Stock Exchange. Our 6.125% senior unsecured notes due in 2026 remain outstanding, and we are voluntarily filing with the Securities and Exchange Commission pursuant to the covenants contained in those notes.

Effective June 1, 2019, TLP Finance contributed all of the issued and outstanding equity of its wholly-owned subsidiary, TLP Management Services LLC (“TMS” and such interest, the “TMS Interest”) to the Company, and the Company immediately contributed the TMS Interest to its 100% owned operating company subsidiary TransMontaigne Operating Company L.P. (the “TMS Contribution”). Prior to the TMS Contribution, we had no employees and all of our management and operational activities were provided by TMS. Further, TMS provided all payroll programs and maintained all employee benefit programs on behalf of our Company with respect to applicable TMS employees (as well as on behalf of certain other Arclight affiliates). As a result of the TMS Contribution, we have assumed the employees and management and operational activities previously provided by TMS. The TMS Contribution has been recorded at carryover basis as a reorganization of entities under common control. As such, prior periods include the assets, liabilities, and results of operations of TMS for all periods presented.

As a result of the TMS Contribution, the omnibus agreement in place in various forms since the inception of the Partnership, and immediately prior to the TMS Contribution between TMS and us, which, among other things, governed the provision of management and operational services provided for us by TMS, is no longer relevant and was terminated.

Our basis in the assets and liabilities of TMS at December 31, 2018 was as follows (in thousands):


Cash	$	694
Trade accounts receivable		7
Due from affiliates		456
Other current assets		456
Property, plant and equipment, net		991
Other assets, net		484
Trade accounts payable		(1,205)
Accrued and other liabilities		(3,025)
Equity	$	(1,142)

(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 LLC 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 September 30, 2019 and December 31, 2018 and our results of operations for the three and nine months ended September 30, 2019 and 2018. 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: 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.

Effective January 1, 2019, we adopted Accounting Standards Codification (“ASC”) Topic 842, Leases and the series of related Accounting Standards Updates that followed (collectively referred to as “ASC 842”). The most significant changes under the new guidance include clarification of the definition of a lease, and the requirements for lessees to recognize a right-of-use asset and a lease liability for all qualifying leases in the consolidated balance sheet. Further, under ASC 842, additional disclosures are required to meet the objective of enabling users of financial statements to assess the amount, timing and uncertainty of cash flows arising from leases. We used the modified retrospective transition method applied at the effective date of the standard. By electing this optional transition method, information prior to January 1, 2019 has not been restated and continues to be reported under the accounting standards in effect for the period (“ASC 840”) (See Note 13 of Notes to consolidated financial statements).

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 15 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 3 of Notes to consolidated financial statements), contract assets or contract liabilities. 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 September 30, 2019, 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. A performance obligation is a promise in a contract to transfer goods or services to the customer. 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 9 of Notes to consolidated financial statements). Long-term contract liabilities include deferred revenue (See Note 10 of Notes to consolidated financial statements).

We generate revenue from terminaling services fees, pipeline transportation fees and management fees. Under ASC 606 and ASC 842, 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. 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 842. 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. We refer to the fixed amount of revenue recognized pursuant to our terminaling services agreements as being “firm commitments.” The majority of our firm commitments under our terminaling services agreements are accounted for in accordance with ASC 842 (“ASC 842 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 volumes of product throughput that exceed the contractually established minimum volumes, injection fees based on the volume of product injected with additive compounds, heating and mixing of stored products, product transfer, railcar handling, butane blending, proceeds from the sale of product gains, wharfage and vapor recovery. The revenue generated by these services 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. The majority of our ancillary revenue is recognized in accordance with ASC 606.

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. Pipeline transportation revenue is primarily accounted for in accordance with ASC 842.

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 manage and operate terminals that are owned by affiliates of ArcLight, including for SeaPort Midstream Partners, LLC (“SMP”) in Seattle, Washington and Portland, Oregon and another terminal for SeaPort Sound Terminal, LLC (“SeaPort Sound”) in Tacoma, Washington and, in each case, receive a management fee based on our costs incurred plus an annual fee. We also manage additional terminal facilities that are owned by affiliates of ArcLight, including for Lucknow-Highspire Terminals, LLC (“LHT”), which operates terminals throughout Pennsylvania encompassing approximately 9.8 million barrels of storage capacity, and prior to July 1, 2019, a terminal in Baltimore, Maryland for Pike Baltimore Terminals, LLC (the “Baltimore Terminal”), and receive a management fee based on our costs incurred. Our management of the Baltimore Terminal ended on July 1, 2019. 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. We lease land under operating leases as the lessor or sublessor with third parties and affiliates. We also managed and operated for an affiliate of PEMEX, Mexico’s state-owned petroleum company, a products pipeline connected to our Brownsville terminal facility and received a management fee through August 23, 2018. Management fee revenue is recognized at individual points in time as the services are performed or as the costs are incurred and is primarily accounted for in accordance with ASC 606. Management fees related to lease revenue are accounted for in accordance with ASC 842.

(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 9 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 4 of Notes to consolidated financial statements).

In connection with our previous acquisitions of certain terminals from TransMontaigne LLC, which is now a wholly owned subsidiary of a third party energy company, 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 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 Company. 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 remain in place and were not affected by the Take-Private Transaction.

(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) Deferred compensation expense

We have a savings and retention program to compensate certain employees who provide services to the Company. Prior to the Take-Private Transaction, we had the ability to settle the awards in our common units, and accordingly, we accounted for the awards as an equity award. Following the Take-Private Transaction, we index the awards to other forms of investments, and have the intent and ability to settle the awards in cash, and accordingly, we account for the awards as liability awards (see Note 12 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. Changes in the fair value of our derivative instruments are recognized in earnings.

At September 30, 2019 our derivative instruments were limited to interest rate swap agreements with an aggregate notional amount of $300 million with the agreements expiring in June 2020. The derivative instrument outstanding at December 31, 2018 expired on March 11, 2019. Pursuant to the terms of the current outstanding interest rate swap agreements, we pay a blended fixed rate of approximately 2.04% and receive 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 were 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 up to our owners.

(l) 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 Company has no components of comprehensive income other than net earnings, no statement of comprehensive income has been presented.

(m) Recent accounting pronouncements

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	9 Months Ended
TRANSACTIONS WITH AFFILIATES	Sep. 30, 2019
TRANSACTIONS WITH AFFILIATES
TRANSACTIONS WITH AFFILIATES	(2) TRANSACTIONS WITH AFFILIATES Operations and reimbursement agreement—Frontera. We have a 50% ownership interest in the Frontera Brownsville LLC joint venture (“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 $1.3 million for both the three months ended September 30, 2019 and 2018 and approximately $4.4 million and $4.2 million for the nine months ended September 30, 2019 and 2018, respectively. Terminaling services agreements—Brownsville terminals. We have two terminaling services agreements with Frontera relating to our Brownsville, Texas facility that will expire in June 2020, subject to automatic renewals unless terminated by either party upon 90 days’ to 180 days’ prior notice. 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 $0.7 million for both the three months ended September 30, 2019 and 2018 and approximately $2.0 million and $1.9 million for the nine months ended September 30, 2019 and 2018, respectively. Terminaling services agreement—Gulf Coast terminals. Associated Asphalt Marketing, LLC is a wholly-owned indirect subsidiary of ArcLight. Effective January 1, 2018, a third party customer assigned their terminaling services agreement relating to our Gulf Coast terminals to Associated Asphalt Marketing, LLC. The agreement 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. We recognized revenue related to this agreement of approximately $1.9 million and $2.1 million for the three months ended September 30, 2019 and 2018, respectively and approximately $6.4 million and $6.3 million for the nine months ended September 30, 2019 and 2018, respectively. Operating and administrative agreement—SeaPort Midstream Partners, LLC (“SMP”)- Central services. We operate two refined products terminals in Seattle, Washington and Portland, Oregon, on behalf of SMP, in accordance with an operating and administrative agreement executed between us and SMP, for a management fee that is based on our costs incurred plus an annual fee. SMP is a joint venture between SeaPort Midstream Holdings LLC, an ArcLight subsidiary, and BP West Coast Products LLC. SeaPort Midstream Holdings LLC owns 51% of SMP. The operating and administrative agreement will expire in November 2020, subject to one-year automatic renewals unless terminated by either party upon 180 days’ prior notice. Our agreement with SMP stipulates that we may resign as the operator at any time with the prior written consent of SMP, 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 administrative agreement of approximately $0.9 million and $0.6 million for the three months ended September 30, 2019 and 2018, respectively and approximately $2.6 million and $2.4 million for the nine months ended September 30, 2019 and 2018, respectively. Operations and reimbursement agreement—SeaPort Sound Terminal, LLC (“SeaPort Sound”)- Central services. Our subsidiary, TMS, operates a refined products terminal in Tacoma, Washington on behalf of SeaPort Midstream Holdings LLC, an ArcLight subsidiary. We receive a management fee based on our costs incurred plus an annual fee. We recognized revenue related to this operations and reimbursement agreement of approximately $2.0 million and $nil for the three months ended September 30, 2019 and 2018, respectively and approximately $5.2 million and $nil for the nine months ended September 30, 2019 and 2018, respectively. Other affiliates – Central services. We manage additional terminal facilities that are owned by affiliates of ArcLight, including LHT, and, prior to July 1, 2019, the Baltimore Terminal. We recognized revenue related to reimbursements from these affiliates of approximately $0.2 million and $nil for the three months ended September 30, 2019 and 2018, respectively and approximately $1.0 million and $nil for the nine months ended September 30, 2019 and 2018, respectively. Our management of the Baltimore Terminal terminated on July 1, 2019. See also Note 1(a), Nature of business, for information regarding the TMS Contribution.

CONCENTRATION OF CREDIT RISK AND TRADE ACCOUNTS RECEIVABLE

9 Months Ended

Sep. 30, 2019

CONCENTRATION OF CREDIT RISK AND TRADE ACCOUNTS RECEIVABLE

CONCENTRATION OF CREDIT RISK AND TRADE ACCOUNTS RECEIVABLE

(3) 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 revenue in accordance with ASC 606 approximate $4.1 million at September 30, 2019. We maintain allowances for potentially uncollectible accounts receivable.

Trade accounts receivable, net consists of the following (in thousands):


	September 30,		December 31,
	2019		2018
Trade accounts receivable	$	14,528	$	14,158
Less allowance for doubtful accounts		(18)		(109)
	$	14,510	$	14,049

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				Nine months ended
	September 30,				September 30,
	2019		2018		2019		2018
NGL Energy Partners LP	19	%	23	%	20	%	23	%
RaceTrac Petroleum Inc.	10	%	11	%	10	%	11	%
Castleton Commodities International LLC	10	%	10	%	10	%	10	%

OTHER CURRENT ASSETS

9 Months Ended

Sep. 30, 2019

OTHER CURRENT ASSETS

OTHER CURRENT ASSETS

(4) OTHER CURRENT ASSETS

Other current assets were as follows (in thousands):


	September 30,		December 31,
	2019		2018
Amounts due from insurance companies	$	1,228	$	2,861
Prepaid insurance		2,242		1,371
Additive detergent		1,411		1,218
Deposits and other assets		1,048		2,647
	$	5,929	$	8,097

Amounts due from insurance companies. We periodically file claims for recovery of environmental remediation costs and property claims 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. At September 30, 2019 and December 31, 2018, we have recognized amounts due from insurance companies of approximately $1.2 million and $2.9 million, respectively, representing our best estimate of our probable insurance recoveries. During the nine months ended September 30, 2019, we received reimbursements from insurance companies of approximately $2.3 million. During the nine months ended September 30, 2019, we increased our estimate of probable future insurance recoveries by approximately $0.6 million.

PROPERTY, PLANT AND EQUIPMENT, NET

9 Months Ended

Sep. 30, 2019

PROPERTY, PLANT AND EQUIPMENT, NET

PROPERTY, PLANT AND EQUIPMENT, NET

(5) PROPERTY, PLANT AND EQUIPMENT, NET

Property, plant and equipment, net was as follows (in thousands):


	September 30,		December 31,
	2019		2018
Land	$	83,451	$	83,451
Terminals, pipelines and equipment		987,192		918,537
Furniture, fixtures and equipment		9,278		7,289
Construction in progress		50,866		64,763
		1,130,787		1,074,040
Less accumulated depreciation		(422,226)		(384,870)
	$	708,561	$	689,170

GOODWILL

9 Months Ended

Sep. 30, 2019

GOODWILL

GOODWILL

(6) GOODWILL

Goodwill was as follows (in thousands):


	September 30,		December 31,
	2019		2018
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 business segments (see Note 16 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 September 30, 2019 and December 31, 2018, our Brownsville and West Coast terminals contained goodwill. We did not recognize any goodwill impairment charges during the nine months ended September 30, 2019 or during the year ended December 31, 2018 for these reporting units. However, an 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 AFFILIATES

9 Months Ended

Sep. 30, 2019

INVESTMENTS IN UNCONSOLIDATED AFFILIATES

INVESTMENTS IN UNCONSOLIDATED AFFILIATES

(7) INVESTMENTS IN UNCONSOLIDATED AFFILIATES

At September 30, 2019 and December 31, 2018, 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 1.7 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)
	September 30,		December 31,		September 30,		December 31,
	2019		2018		2019		2018
BOSTCO	42.5	%	42.5	%	$	200,558	$	203,005
Frontera	50	%	50	%		24,370		24,026
Total investments in unconsolidated affiliates					$	224,928	$	227,031

At September 30, 2019 and December 31, 2018, our investment in BOSTCO includes approximately $6.7 million and $6.8 million, respectively, 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				Nine months ended
	September 30,				September 30,
	2019		2018		2019		2018
BOSTCO	$	594	$	1,028	$	1,733	$	4,867
Frontera		882		834		2,108		2,328
Total earnings from investments in unconsolidated affiliates	$	1,476	$	1,862	$	3,841	$	7,195

Additional capital investments in unconsolidated affiliates was as follows (in thousands):


	Three months ended				Nine months ended
	September 30,				September 30,
	2019		2018		2019		2018
BOSTCO	$	1,504	$	—	$	2,580	$	—
Frontera		—		—		225		1,264
Additional capital investments in unconsolidated affiliates	$	1,504	$	—	$	2,805	$	1,264

Cash distributions received from unconsolidated affiliates was as follows (in thousands):


	Three months ended				Nine months ended
	September 30,				September 30,
	2019		2018		2019		2018
BOSTCO	$	2,063	$	4,015	$	6,760	$	9,600
Frontera		672		992		1,989		3,418
Cash distributions received from unconsolidated affiliates	$	2,735	$	5,007	$	8,749	$	13,018

The summarized financial information of our unconsolidated affiliates was as follows (in thousands):

Balance sheets:


	BOSTCO				Frontera
	September 30,		December 31,		September 30,		December 31,
	2019		2018		2019		2018
Current assets	$	18,523	$	19,299	$	5,945	$	5,866
Long-term assets		459,004		455,984		44,443		45,115
Current liabilities		(15,297)		(12,471)		(1,633)		(2,845)
Long-term liabilities		(6,176)		(1,259)		(15)		(84)
Net assets	$	456,054	$	461,553	$	48,740	$	48,052

Statements of income:


	BOSTCO				Frontera
	Three months ended				Three months ended
	September 30,				September 30,
	2019		2018		2019		2018
Revenue	$	14,812	$	16,596	$	5,309	$	6,061
Expenses		(13,121)		(13,720)		(3,545)		(4,393)
Net income	$	1,691	$	2,876	$	1,764	$	1,668


	BOSTCO				Frontera
	Nine months ended				Nine months ended
	September 30,				September 30,
	2019		2018		2019		2018
Revenue	$	46,282	$	50,331	$	15,418	$	17,982
Expenses		(40,404)		(37,784)		(11,202)		(13,326)
Net income	$	5,878	$	12,547	$	4,216	$	4,656

OTHER ASSETS, NET

9 Months Ended

Sep. 30, 2019

OTHER ASSETS, NET

OTHER ASSETS, NET

(8) OTHER ASSETS, NET

Other assets, net was as follows (in thousands):


	September 30,		December 31,
	2019		2018
Customer relationships, net of accumulated amortization of $6,650 and $4,887, respectively	$	42,780	$	44,543
Revolving credit facility unamortized deferred issuance costs, net of accumulated amortization of $8,929 and $7,656, respectively		4,242		5,515
Amounts due under long-term terminaling services agreements		484		422
Deposits and other assets		2,100		774
	$	49,606	$	51,254

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 under ASC 842 the minimum payments under the long‑term terminaling services agreements on a straight‑line basis over the terms of the respective agreements. At September 30, 2019 and December 31, 2018, 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 $0.5 million and $0.4 million, respectively.

ACCRUED LIABILITIES

9 Months Ended

Sep. 30, 2019

ACCRUED LIABILITIES

ACCRUED LIABILITIES

(9) ACCRUED LIABILITIES

Accrued liabilities were as follows (in thousands):


	September 30,		December 31,
	2019		2018
Customer advances and deposits	$	8,334	$	11,927
Accrued property taxes		6,230		3,003
Accrued environmental obligations		1,627		1,556
Interest payable		3,169		7,814
Accrued expenses and other		10,060		7,646
	$	29,420	$	31,946

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 September 30, 2019 and December 31, 2018, we have billed and collected from certain of our customers approximately $8.3 million and $11.9 million, respectively, in advance of the terminaling services being provided. At September 30, 2019 and 2018, approximately $0.9 million and $0.4 million, respectively, of the customer advances and deposits balance is considered contract liabilities under ASC 606. Revenue recognized during the nine months ended September 30, 2019 and 2018 from amounts included in contract liabilities at the beginning of the period was approximately $0.8 million and $0.5 million, respectively.

Accrued environmental obligations. At both September 30, 2019 and December 31, 2018, we have accrued environmental obligations of approximately $1.6 million representing our best estimate of our remediation obligations. During the nine months ended September 30, 2019, we made payments of approximately $0.6 million towards our environmental remediation obligations. During the nine months ended September 30, 2019, we increased our estimate of our future environmental remediation costs by approximately $0.6 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

9 Months Ended

Sep. 30, 2019

OTHER LIABILITIES

OTHER LIABILITIES

(10) OTHER LIABILITIES

Other liabilities were as follows (in thousands):


	September 30,		December 31,
	2019		2018
Advance payments received under long-term terminaling services agreements	$	3,564	$	2,721
Deferred revenue		1,919		1,922
	$	5,483	$	4,643

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 under ASC 842 on a straight‑line basis over the term of the respective agreements. At September 30, 2019 and December 31, 2018, we have received advance minimum payments in excess of revenue recognized under these long‑term terminaling services agreements resulting in a liability of approximately $3.6 million and $2.7 million, respectively.

Deferred revenue. Pursuant to agreements with our customers, we agreed to undertake certain capital projects. Upon completion of the projects, our customers have paid us amounts that will be recognized as revenue on a straight‑line basis over the remaining term of the agreements. At both September 30, 2019 and December 31, 2018, we have unamortized deferred revenue for completed projects of approximately $1.9 million. During the nine months ended September 30, 2019, we billed customers approximately $0.7 million for completed projects and recognized revenue for completed projects on a straight‑line basis of approximately $0.7 million. At September 30, 2019 and December 31, 2018, approximately $0.1 million and $0.2 million, respectively, of the deferred revenue balance is considered contract liabilities under ASC 606. Revenue recognized during the nine months ended September 30, 2019 and 2018 from amounts included in contract liabilities under ASC 606 at the beginning of the period was approximately $0.2 million and $1.0 million, respectively.

LONG-TERM DEBT

9 Months Ended

Sep. 30, 2019

LONG-TERM DEBT

LONG-TERM DEBT

(11) LONG‑TERM DEBT

Long-term debt was as follows (in thousands):


	September 30,		December 31,
	2019		2018
Revolving credit facility due in 2022	$	342,900	$	306,000
6.125% senior notes due in 2026		300,000		300,000
Senior notes unamortized deferred issuance costs, net of accumulated amortization of $1,329 and $704, respectively		(6,753)		(7,378)
	$	636,147	$	598,622

On February 12, 2018, the Company and TLP Finance Corp., our wholly owned subsidiary, issued at par $300 million of 6.125% senior notes. Net proceeds, after $8.1 million of issuance costs, were used to repay indebtedness under our revolving credit facility. The senior notes are due in 2026 and are guaranteed on a senior unsecured basis by each of our 100% owned domestic subsidiaries that guarantee obligations under our revolving credit facility. TransMontaigne Partners LLC 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 LLC through our 100% owned operating company subsidiary, TransMontaigne Operating Company L.P. None of the assets of TransMontaigne Partners LLC or a guarantor represent restricted net assets pursuant to the guidelines established by the SEC.

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 LLC 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, March 13, 2022. We were in compliance with all financial covenants as of and during the nine months ended September 30, 2019 and the year ended December 31, 2018.

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 nine months ended September 30, 2019 and 2018, the weighted average interest rate on borrowings under our revolving credit facility was approximately 5.7% and 5.0%, respectively. At September 30, 2019 and December 31, 2018, our outstanding borrowings under our revolving credit facility were $342.9 million and $306 million, respectively. At September 30, 2019 and December 31, 2018 our outstanding letters of credit were $1.3 million and $0.4 million, respectively.

DEFERRED COMPENSATION EXPENSE	9 Months Ended
DEFERRED COMPENSATION EXPENSE	Sep. 30, 2019
DEFERRED COMPENSATION EXPENSE
DEFERRED COMPENSATION EXPENSE	(12) DEFERRED COMPENSATION EXPENSE We have a savings and retention program to compensate certain employees who provide services to the Company. Prior to the Take-Private Transaction, we also had a long‑term incentive plan to compensate the independent directors of our general partner. Awards under the long-term incentive plan were settled in our common units, and accordingly, we accounted for the awards as an equity award. For awards to the independent directors, deferred compensation expense was approximately $nil and $0.2 million for the nine months ended September 30, 2019 and 2018, respectively. The purpose of the savings and retention program is to provide for the reward and retention of participants by providing them with awards that vest over future service periods. Awards under the program with respect to individuals providing services to the Company 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 Company as specified in the program. The awards are increased for the value of any accrued growth based on underlying investments deemed made with respect to the awards. The awards (including any accrued growth relating thereto) are subject to forfeiture until the vesting date. The Take-Private Transaction did not accelerate the vesting of any of the awards. 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 the Company or any of its affiliates or predecessors, or (c) age fifty and twenty years of service as an employee of the Company or any of its affiliates or predecessors. Prior to the Take-Private Transaction, we had the ability to settle the savings and retention program awards in our common units, and accordingly, we accounted for the awards as an equity award. Following the Take-Private Transaction, we index the awards to other forms of investments, and have the intent and ability to settle the awards in cash, and accordingly, we account for the awards as accrued liabilities. For awards to employees, approximately $1.5 million and $2.7 million is included in deferred compensation expense for the nine months ended September 30, 2019 and 2018, respectively.

COMMITMENTS AND CONTINGENCIES

9 Months Ended

Sep. 30, 2019

COMMITMENTS AND CONTINGENCIES

COMMITMENTS AND CONTINGENCIES

(13) COMMITMENTS AND CONTINGENCIES

Effective January 1, 2019, we adopted Accounting Standards Codification (“ASC”) Topic 842, Leases and the series of related Accounting Standards Updates that followed (collectively referred to as “ASC 842”), using the modified retrospective transition method applied at the effective date of the standard. By electing this optional transition method, information prior to January 1, 2019 has not been restated and continues to be reported under the accounting standards in effect for that period (ASC 840).

The Company elected the package of practical expedients permitted under the transition guidance within the new standard, including the option to carry forward the historical lease classifications and assessment of initial direct costs, to not include leases with an initial term of less than twelve months in the lease assets and liabilities and to account for lease and non-lease components as a single lease.

We lease property including corporate offices, vehicles and land. We determine if an arrangement is a lease at inception and evaluate identified leases for operating or finance lease treatment. Operating or finance lease right-of-use assets and liabilities are recognized at the commencement date based on the present value of lease payments over the lease term. Our leases have remaining lease terms of less than one year to 42 years, some of which have options to extend or terminate the lease. For purposes of calculating operating lease liabilities, lease terms may be deemed to include options to extend or terminate the lease when it is reasonably certain that we will exercise that option.

The impact of ASC 842 on our consolidated balance sheet beginning January 1, 2019 was the recognition of right-of-use assets and lease liabilities for operating leases. Unamortized lease incentives were reclassified into right-of-use assets on January 1, 2019. Amounts recognized at January 1, 2019 and September 30, 2019 for operating leases was as follows (in thousands):


Right-of-use assets, operating leases - January 1, 2019	$	37,881
Amortization of right-of-use assets, January 1, 2019-March 31, 2019		(594)
Right-of-use assets, operating leases - March 31, 2019		37,287
Amortization of right-of-use assets, April 1, 2019-June 30, 2019		(654)
Right-of-use assets, operating leases - June 30, 2019		36,633
Additions July 1, 2019-September 30, 2019		52
Amortization of right-of-use assets, July 1, 2019-September 30, 2019		(655)
Right-of-use assets, operating leases - September 30, 2019	$	36,030

Operating lease liabilities - January 1, 2019	$	39,545
Liability reduction, net January 1, 2019-March 31, 2019		(755)
Operating lease liabilities - March 31, 2019		38,790
Liability reduction, net April 1, 2019-June 30, 2019		(238)
Operating lease liabilities - June 30, 2019		38,552
Additions, July 1, 2019-September 30, 2019		52
Liability reduction, net July 1, 2019-September 30, 2019		(457)
Operating lease liabilities - September 30, 2019	$	38,147
Current portion of operating lease liabilities	$	2,997
Long-term operating lease liabilities	$	35,150

No impact was recorded to the statement of operations or beginning equity for ASC 842.

Beginning January 1, 2019, operating right-of-use assets and operating lease liabilities are recognized based on the present value of lease payments over the lease term at commencement date. Operating leases in effect prior to January 1, 2019 were recognized at the present value of the remaining payments on the remaining lease term as of January 1, 2019. The Company uses its incremental borrowing rate based on the information available at the commencement date in determining the present value of lease payments. We have certain land and vehicle lease agreements with lease and non-lease components, which are accounted for separately. We have elected the practical expedient to account for the remainder of our lease agreements and non-lease components as a single lease component. Non-lease payments include payments for taxes and other operating and maintenance expenses incurred by the lessor but payable by us in connection with the leasing arrangement. As of September 30, 2019, the Company was party to certain subleasing arrangements whereby the Company, as the primary obligor on the lease, has recognized sublease income for lease payments made by affiliates to the lessor.

Following are components of our lease costs (in thousands):


	Three months ended		Nine months ended
	September 30,		September 30,
	2019		2019
Operating leases	$	1,154	$	3,380
Short-term and variable leases		148		653
Total lease costs	$	1,302	$	4,033

Other information related to our operating leases was as follows (in thousands, except lease term and discount rate):


	Three months ended		Nine months ended
	September 30,		September 30,
	2019		2019
Cash outflows for operating leases	$	957	$	2,927
Sublease income as primary obligor	$	247	$	740

			September 30,
			2019
Weighted average remaining lease term (years)				19.49
Weighted average discount rate				5.2%

Undiscounted cash flows owed by the Company to lessors pursuant to contractual agreements in effect as of September 30, 2019 and related imputed interest was as follows (in thousands):


2019 (remainder of the year)	$	4,595
2020		4,448
2021		4,435
2022		4,094
2023		3,637
Thereafter		40,646
Total lease payments		61,855
Less imputed interest		(23,708)
Present value of operating lease liabilities	$	38,147

At December 31, 2018, future minimum lease payments under operating leases accounted for under ASC 840 was as follows (in thousands):


Years ending December 31:
2019	$	4,050
2020		4,308
2021		3,973
2022		3,050
2023		2,508
Thereafter		6,287
	$	24,176

Contract commitments. At September 30, 2019, we have contractual commitments of approximately $24.7 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 primarily be paid within a year.

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	9 Months Ended
DISCLOSURES ABOUT FAIR VALUE	Sep. 30, 2019
DISCLOSURES ABOUT FAIR VALUE
DISCLOSURES ABOUT FAIR VALUE	(14) 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 September 30, 2019 and December 31, 2018. 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 estimated fair value of our $300 million publicly traded senior notes at September 30, 2019 was approximately $290.3 million based on observable market trades. The fair value of our debt is categorized in Level 2 of the fair value hierarchy.

- Definition

The entire disclosure for the fair value of financial instruments (as defined), including financial assets and financial liabilities (collectively, as defined), and the measurements of those instruments as well as disclosures related to the fair value of non-financial assets and liabilities. Such disclosures about the financial instruments, assets, and liabilities would include: (1) the fair value of the required items together with their carrying amounts (as appropriate); (2) for items for which it is not practicable to estimate fair value, disclosure would include: (a) information pertinent to estimating fair value (including, carrying amount, effective interest rate, and maturity, and (b) the reasons why it is not practicable to estimate fair value; (3) significant concentrations of credit risk including: (a) information about the activity, region, or economic characteristics identifying a concentration, (b) the maximum amount of loss the entity is exposed to based on the gross fair value of the related item, (c) policy for requiring collateral or other security and information as to accessing such collateral or security, and (d) the nature and brief description of such collateral or security; (4) quantitative information about market risks and how such risks are managed; (5) for items measured on both a recurring and nonrecurring basis information regarding the inputs used to develop the fair value measurement; and (6) for items presented in the financial statement for which fair value measurement is elected: (a) information necessary to understand the reasons for the election, (b) discussion of the effect of fair value changes on earnings, (c) a description of [similar groups] items for which the election is made and the relation thereof to the balance sheet, the aggregate carrying value of items included in the balance sheet that are not eligible for the election; (7) all other required (as defined) and desired information.

+ References + Details

REVENUE FROM CONTRACTS WITH CUSTOMERS

9 Months Ended

Sep. 30, 2019

REVENUE FROM CONTRACTS WITH CUSTOMERS

REVENUE FROM CONTRACTS WITH CUSTOMERS

(15) REVENUE FROM CONTRACTS WITH CUSTOMERS

The majority of our terminaling services agreements contain minimum payment arrangements, resulting in a fixed amount of revenue recognized, which we refer to as “firm commitments” and are accounted for in accordance with ASC 842, Leases (“ASC 842 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 September 30,				Nine months ended September 30,
	2019		2018		2019		2018
Terminaling services fees:
Firm commitments (ASC 842/840 revenue)	$	46,130	$	39,753	$	131,307	$	117,608
Firm commitments (ASC 606 revenue)		3,351		3,467		10,789		10,443
Total firm commitments revenue		49,481		43,220		142,096		128,051
Ancillary revenue (ASC 606 revenue)		10,430		10,772		30,577		30,211
Ancillary revenue (ASC 842/840 revenue)		1,168		360		3,645		1,659
Total ancillary revenue		11,598		11,132		34,222		31,870
Total terminaling services fees		61,079		54,352		176,318		159,921
Pipeline transportation fees (ASC 842/840 revenue)		877		774		2,579		2,437
Management fees (ASC 606 revenue)		4,317		2,433		12,611		8,376
Management fees (ASC 842/840 revenue)		300		193		1,302		571
Total management fees		4,617		2,626		13,913		8,947
Total revenue	$	66,573	$	57,752	$	192,810	$	171,305

The following table includes our estimated future revenue associated with our firm commitments under terminaling services fees which is expected to be recognized as ASC 606 revenue in the specified period related to our future performance obligations as of the end of the reporting period (in thousands):

Estimated Future ASC 606 Revenue by Segment


	Gulf Coast		Midwest			Brownsville		River		Southeast		West Coast		Central
	Terminals		Terminals			Terminals		Terminals		Terminals		Terminals		Services		Total
2019 (remainder of the year)	$	1,164	$	140	$	—	$	309	$	—	$	1,051	$	—	$	2,664
2020		1,814		559		—		1,088		—		4,088		—		7,549
2021		1,510		47		—		519		—		3,953		—		6,029
2022		962		—		—		—		—		1,204		—		2,166
2023		—		—		—		—		—		—		—		—
Thereafter		—		—		—		—		—		—		—		—
Total estimated future ASC 606 revenue	$	5,450	$	746	$	—	$	1,916	$	—	$	10,296	$	—	$	18,408

Our estimated future 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 disclosed include the full amount of our customer commitments accounted for as ASC 606 revenue as of September 30, 2019 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 future ASC 606 revenue in the table above excludes revenue arrangements accounted for in accordance with ASC 842 in the amount of $46.0 million for the remainder of 2019, $160.1 million for 2020, $127.2 million for 2021, $95.3 million for 2022, $81.5 million for 2023 and $542.6 million thereafter.

BUSINESS SEGMENTS

9 Months Ended

Sep. 30, 2019

BUSINESS SEGMENTS

BUSINESS SEGMENTS

(16) 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 the Company’s chief executive officer. The Company’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 operating costs and expenses. Accordingly, we present “net margins” for each of our business segments: (i) Gulf Coast terminals, (ii) Midwest terminals, (iii) Brownsville terminals including management of Frontera, (iv) River terminals, (v) Southeast terminals, (vi) West Coast terminals and (vii) Central services. Our Central services segment primarily represents the costs of employees performing operating oversight functions, engineering, health, safety and environmental services to our terminals and terminals that we operate or manage, including for affiliate terminals owned by ArcLight. In addition, Central services represent the cost of employees at affiliate terminals owned by ArcLight that we operate. We receive a fee from these affiliates based on our costs incurred.

The financial performance of our business segments was as follows (in thousands):


	Three months ended				Nine months ended
	September 30,				September 30,
	2019		2018		2019		2018
Gulf Coast Terminals:
Terminaling services fees	$	18,930	$	15,824	$	52,074	$	48,462
Management fees		16		13		30		196
Revenue		18,946		15,837		52,104		48,658
Operating costs and expenses		(5,182)		(5,614)		(16,089)		(16,859)
Net margins		13,764		10,223		36,015		31,799
Midwest Terminals:
Terminaling services fees		3,115		2,644		8,356		7,468
Pipeline transportation fees		472		453		1,378		1,319
Revenue		3,587		3,097		9,734		8,787
Operating costs and expenses		(1,293)		(733)		(2,699)		(2,188)
Net margins		2,294		2,364		7,035		6,599
Brownsville Terminals:
Terminaling services fees		2,954		2,100		7,817		6,143
Pipeline transportation fees		405		321		1,201		1,118
Management fees		1,283		1,818		4,381		5,814
Revenue		4,642		4,239		13,399		13,075
Operating costs and expenses		(2,056)		(1,887)		(6,546)		(6,063)
Net margins		2,586		2,352		6,853		7,012
River Terminals:
Terminaling services fees		2,457		2,559		7,211		7,902
Revenue		2,457		2,559		7,211		7,902
Operating costs and expenses		(1,318)		(1,568)		(4,327)		(5,209)
Net margins		1,139		991		2,884		2,693
Southeast Terminals:
Terminaling services fees		22,039		21,349		65,167		61,098
Management fees		233		193		711		570
Revenue		22,272		21,542		65,878		61,668
Operating costs and expenses		(5,174)		(6,633)		(17,266)		(18,966)
Net margins		17,098		14,909		48,612		42,702
West Coast Terminals:
Terminaling services fees		11,584		9,876		35,693		28,848
Management fees		8		—		25		—
Revenue		11,592		9,876		35,718		28,848
Operating costs and expenses		(3,703)		(3,475)		(12,207)		(10,045)
Net margins		7,889		6,401		23,511		18,803
Central Services:
Management fees		3,077		602		8,766		2,367
Revenue		3,077		602		8,766		2,367
Operating costs and expenses		(5,669)		(3,604)		(17,050)		(12,248)
Net margins		(2,592)		(3,002)		(8,284)		(9,881)
Total net margins		42,178		34,238		116,626		99,727
General and administrative expenses		(4,603)		(4,823)		(17,979)		(16,322)
Insurance expenses		(1,240)		(1,227)		(3,819)		(3,744)
Deferred compensation expense		(376)		(483)		(1,469)		(2,941)
Depreciation and amortization		(13,362)		(12,375)		(39,121)		(37,471)
Earnings from unconsolidated affiliates		1,476		1,862		3,841		7,195
Gain from insurance proceeds		—		—		3,351		—
Operating income		24,073		17,192		61,430		46,444
Other expenses		(9,743)		(9,230)		(29,675)		(25,754)
Net earnings	$	14,330	$	7,962	$	31,755	$	20,690

Supplemental information about our business segments is summarized below (in thousands):


	Three months ended September 30, 2019

	Gulf Coast		Midwest		Brownsville		River		Southeast		West Coast		Central
	Terminals		Terminals		Terminals		Terminals		Terminals		Terminals		Services		Total
Revenue:
External customers	$	17,096	$	3,587	$	2,684	$	2,457	$	22,272	$	11,592	$	—	$	59,688
Affiliate customers		1,850		—		1,958		—		—		—		3,077		6,885
Revenue	$	18,946	$	3,587	$	4,642	$	2,457	$	22,272	$	11,592	$	3,077	$	66,573
Capital expenditures	$	1,305	$	234	$	6,667	$	641	$	6,864	$	2,349	$	60	$	18,120
Identifiable assets	$	123,822	$	19,797	$	87,994	$	45,365	$	248,691	$	279,942	$	13,247	$	818,858
Cash and cash equivalents																348
Investments in unconsolidated affiliates																224,928
Revolving credit facility unamortized deferred issuance costs, net																4,242
Other																3,074
Total assets															$	1,051,450


	Three months ended September 30, 2018

	Gulf Coast		Midwest		Brownsville		River		Southeast		West Coast		Central
	Terminals		Terminals		Terminals		Terminals		Terminals		Terminals		Services		Total
Revenue:
External customers	$	13,774	$	3,097	$	2,158	$	2,559	$	21,542	$	9,876	$	—	$	53,006
Affiliate customers		2,063		—		2,081		—		—		—		602		4,746
Revenue	$	15,837	$	3,097	$	4,239	$	2,559	$	21,542	$	9,876	$	602	$	57,752
Capital expenditures	$	940	$	2	$	3,859	$	441	$	8,693	$	2,590	$	2	$	16,527


	Nine months ended September 30, 2019

	Gulf Coast		Midwest		Brownsville		River		Southeast		West Coast		Central
	Terminals		Terminals		Terminals		Terminals		Terminals		Terminals		Services		Total
Revenue:
External customers	$	45,712	$	9,734	$	7,039	$	7,211	$	65,878	$	35,718	$	—	$	171,292
Affiliate customers		6,392		—		6,360		—		—		—		8,766		21,518
Revenue	$	52,104	$	9,734	$	13,399	$	7,211	$	65,878	$	35,718	$	8,766	$	192,810
Capital expenditures	$	4,373	$	621	$	18,118	$	1,807	$	31,301	$	8,817	$	380	$	65,417


	Nine months ended September 30, 2018

	Gulf Coast		Midwest		Brownsville		River		Southeast		West Coast		Central
	Terminals		Terminals		Terminals		Terminals		Terminals		Terminals		Services		Total
Revenue:
External customers	$	42,312	$	8,787	$	6,982	$	7,902	$	61,668	$	28,848	$	—	$	156,499
Affiliate customers		6,346		—		6,093		—		—		—		2,367		14,806
Revenue	$	48,658	$	8,787	$	13,075	$	7,902	$	61,668	$	28,848	$	2,367	$	171,305
Capital expenditures	$	4,120	$	338	$	6,326	$	1,333	$	21,128	$	5,235	$	38	$	38,518

SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Policies)

9 Months Ended

Sep. 30, 2019

SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES

Nature of business

(a) Nature of business

Our basis in the assets and liabilities of TMS at December 31, 2018 was as follows (in thousands):


Cash	$	694
Trade accounts receivable		7
Due from affiliates		456
Other current assets		456
Property, plant and equipment, net		991
Other assets, net		484
Trade accounts payable		(1,205)
Accrued and other liabilities		(3,025)
Equity	$	(1,142)

Basis of presentation and use of estimates


Cash	$	694
Trade accounts receivable		7
Due from affiliates		456
Other current assets		456
Property, plant and equipment, net		991
Other assets, net		484
Trade accounts payable		(1,205)
Accrued and other liabilities		(3,025)
Equity	$	(1,142)

(b) Basis of presentation and use of estimates

Accounting for operations

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

Investments in unconsolidated affiliates

(f) Investments in unconsolidated affiliates

Environmental obligations

(g) Environmental obligations

Asset retirement obligations

(h) Asset retirement obligations

Deferred compensation expense

(i) Deferred compensation expense

Accounting for derivative instruments

(j) Accounting for derivative instruments

Income taxes

(k) Income taxes

Comprehensive Income

(l) Comprehensive income

Recent accounting pronouncements

(m) Recent accounting pronouncements

SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Tables)

9 Months Ended

Sep. 30, 2019

SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES

Basis in assets and liabilities of TMS


Cash	$	694
Trade accounts receivable		7
Due from affiliates		456
Other current assets		456
Property, plant and equipment, net		991
Other assets, net		484
Trade accounts payable		(1,205)
Accrued and other liabilities		(3,025)
Equity	$	(1,142)

CONCENTRATION OF CREDIT RISK AND TRADE ACCOUNTS RECEIVABLE (Tables)

9 Months Ended

Sep. 30, 2019

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):


	September 30,		December 31,
	2019		2018
Trade accounts receivable	$	14,528	$	14,158
Less allowance for doubtful accounts		(18)		(109)
	$	14,510	$	14,049

Schedule of customer who accounted for at least 10% of consolidated revenue


	Three months ended				Nine months ended
	September 30,				September 30,
	2019		2018		2019		2018
NGL Energy Partners LP	19	%	23	%	20	%	23	%
RaceTrac Petroleum Inc.	10	%	11	%	10	%	11	%
Castleton Commodities International LLC	10	%	10	%	10	%	10	%

OTHER CURRENT ASSETS (Tables)

9 Months Ended

Sep. 30, 2019

OTHER CURRENT ASSETS

Schedule of other current assets (in thousands)

Other current assets were as follows (in thousands):


	September 30,		December 31,
	2019		2018
Amounts due from insurance companies	$	1,228	$	2,861
Prepaid insurance		2,242		1,371
Additive detergent		1,411		1,218
Deposits and other assets		1,048		2,647
	$	5,929	$	8,097

PROPERTY, PLANT AND EQUIPMENT, NET (Tables)

9 Months Ended

Sep. 30, 2019

PROPERTY, PLANT AND EQUIPMENT, NET

Schedule of property, plant and equipment, net (in thousands)

Property, plant and equipment, net was as follows (in thousands):


	September 30,		December 31,
	2019		2018
Land	$	83,451	$	83,451
Terminals, pipelines and equipment		987,192		918,537
Furniture, fixtures and equipment		9,278		7,289
Construction in progress		50,866		64,763
		1,130,787		1,074,040
Less accumulated depreciation		(422,226)		(384,870)
	$	708,561	$	689,170

GOODWILL (Tables)

9 Months Ended

Sep. 30, 2019

GOODWILL

Schedule of goodwill (in thousands)

Goodwill was as follows (in thousands):


	September 30,		December 31,
	2019		2018
Brownsville terminals	$	8,485	$	8,485
West Coast terminals		943		943
	$	9,428	$	9,428

INVESTMENTS IN UNCONSOLIDATED AFFILIATES (Tables)

9 Months Ended

Sep. 30, 2019

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)
	September 30,		December 31,		September 30,		December 31,
	2019		2018		2019		2018
BOSTCO	42.5	%	42.5	%	$	200,558	$	203,005
Frontera	50	%	50	%		24,370		24,026
Total investments in unconsolidated affiliates					$	224,928	$	227,031

Schedule of earnings from investments in unconsolidated affiliates (in thousands)

Earnings from investments in unconsolidated affiliates was as follows (in thousands):


	Three months ended				Nine months ended
	September 30,				September 30,
	2019		2018		2019		2018
BOSTCO	$	594	$	1,028	$	1,733	$	4,867
Frontera		882		834		2,108		2,328
Total earnings from investments in unconsolidated affiliates	$	1,476	$	1,862	$	3,841	$	7,195

Schedule of additional capital investments in unconsolidated affiliates (in thousands)

Additional capital investments in unconsolidated affiliates was as follows (in thousands):


	Three months ended				Nine months ended
	September 30,				September 30,
	2019		2018		2019		2018
BOSTCO	$	1,504	$	—	$	2,580	$	—
Frontera		—		—		225		1,264
Additional capital investments in unconsolidated affiliates	$	1,504	$	—	$	2,805	$	1,264

Schedule of cash distributions received from unconsolidated affiliates (in thousands)

Cash distributions received from unconsolidated affiliates was as follows (in thousands):


	Three months ended				Nine months ended
	September 30,				September 30,
	2019		2018		2019		2018
BOSTCO	$	2,063	$	4,015	$	6,760	$	9,600
Frontera		672		992		1,989		3,418
Cash distributions received from unconsolidated affiliates	$	2,735	$	5,007	$	8,749	$	13,018

Summary of financial information of unconsolidated affiliates (in thousands)

The summarized financial information of our unconsolidated affiliates was as follows (in thousands):

Balance sheets:


	BOSTCO				Frontera
	September 30,		December 31,		September 30,		December 31,
	2019		2018		2019		2018
Current assets	$	18,523	$	19,299	$	5,945	$	5,866
Long-term assets		459,004		455,984		44,443		45,115
Current liabilities		(15,297)		(12,471)		(1,633)		(2,845)
Long-term liabilities		(6,176)		(1,259)		(15)		(84)
Net assets	$	456,054	$	461,553	$	48,740	$	48,052

Statements of income:


	BOSTCO				Frontera
	Three months ended				Three months ended
	September 30,				September 30,
	2019		2018		2019		2018
Revenue	$	14,812	$	16,596	$	5,309	$	6,061
Expenses		(13,121)		(13,720)		(3,545)		(4,393)
Net income	$	1,691	$	2,876	$	1,764	$	1,668


	BOSTCO				Frontera
	Nine months ended				Nine months ended
	September 30,				September 30,
	2019		2018		2019		2018
Revenue	$	46,282	$	50,331	$	15,418	$	17,982
Expenses		(40,404)		(37,784)		(11,202)		(13,326)
Net income	$	5,878	$	12,547	$	4,216	$	4,656

OTHER ASSETS, NET (Tables)

9 Months Ended

Sep. 30, 2019

OTHER ASSETS, NET

Schedule of other assets, net (in thousands)

Other assets, net was as follows (in thousands):


	September 30,		December 31,
	2019		2018
Customer relationships, net of accumulated amortization of $6,650 and $4,887, respectively	$	42,780	$	44,543
Revolving credit facility unamortized deferred issuance costs, net of accumulated amortization of $8,929 and $7,656, respectively		4,242		5,515
Amounts due under long-term terminaling services agreements		484		422
Deposits and other assets		2,100		774
	$	49,606	$	51,254

ACCRUED LIABILITIES (Tables)

9 Months Ended

Sep. 30, 2019

ACCRUED LIABILITIES

Schedule of accrued liabilities (in thousands)

Accrued liabilities were as follows (in thousands):


	September 30,		December 31,
	2019		2018
Customer advances and deposits	$	8,334	$	11,927
Accrued property taxes		6,230		3,003
Accrued environmental obligations		1,627		1,556
Interest payable		3,169		7,814
Accrued expenses and other		10,060		7,646
	$	29,420	$	31,946

OTHER LIABILITIES (Tables)

9 Months Ended

Sep. 30, 2019

OTHER LIABILITIES

Schedule of other liabilities (in thousands)

Other liabilities were as follows (in thousands):


	September 30,		December 31,
	2019		2018
Advance payments received under long-term terminaling services agreements	$	3,564	$	2,721
Deferred revenue		1,919		1,922
	$	5,483	$	4,643

LONG-TERM DEBT (Tables)

9 Months Ended

Sep. 30, 2019

LONG-TERM DEBT

Summary of long term debt

Long-term debt was as follows (in thousands):


	September 30,		December 31,
	2019		2018
Revolving credit facility due in 2022	$	342,900	$	306,000
6.125% senior notes due in 2026		300,000		300,000
Senior notes unamortized deferred issuance costs, net of accumulated amortization of $1,329 and $704, respectively		(6,753)		(7,378)
	$	636,147	$	598,622

- Definition

Tabular disclosure of long-debt instruments or arrangements, including identification, terms, features, collateral requirements and other information necessary to a fair presentation. These are debt arrangements that originally required repayment more than twelve months after issuance or greater than the normal operating cycle of the entity, if longer.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02.22)
-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 835
-SubTopic 30
-Section 45
-Paragraph 1A
-URI http://asc.fasb.org/extlink&oid=114775744&loc=d3e28541-108399

Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 505
-SubTopic 10
-Section 50
-Paragraph 6
-URI http://asc.fasb.org/extlink&oid=109259400&loc=d3e21506-112644

Reference 4: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 235
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.4-08.(e),(f))
-URI http://asc.fasb.org/extlink&oid=26873400&loc=d3e23780-122690

Reference 5: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 835
-SubTopic 30
-Section 45
-Paragraph 2
-URI http://asc.fasb.org/extlink&oid=114775744&loc=d3e28551-108399

Reference 6: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 505
-SubTopic 10
-Section 50
-Paragraph 7
-URI http://asc.fasb.org/extlink&oid=109259400&loc=d3e21521-112644

Reference 7: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 505
-SubTopic 10
-Section 50
-Paragraph 8
-URI http://asc.fasb.org/extlink&oid=109259400&loc=d3e21538-112644

Reference 8: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 942
-SubTopic 470
-Section 50
-Paragraph 3
-URI http://asc.fasb.org/extlink&oid=75038535&loc=d3e64711-112823

Reference 9: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 835
-SubTopic 30
-Section 55
-Paragraph 8
-URI http://asc.fasb.org/extlink&oid=114775985&loc=d3e28878-108400

Reference 10: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 505
-SubTopic 10
-Section 50
-Paragraph 3
-URI http://asc.fasb.org/extlink&oid=109259400&loc=d3e21475-112644

+ Details

COMMITMENTS AND CONTINGENCIES (Tables)

9 Months Ended

Sep. 30, 2019

COMMITMENTS AND CONTINGENCIES

Schedule of recognition of right-of-use assets and lease liabilities for operating leases

Amounts recognized at January 1, 2019 and September 30, 2019 for operating leases was as follows (in thousands):


Right-of-use assets, operating leases - January 1, 2019	$	37,881
Amortization of right-of-use assets, January 1, 2019-March 31, 2019		(594)
Right-of-use assets, operating leases - March 31, 2019		37,287
Amortization of right-of-use assets, April 1, 2019-June 30, 2019		(654)
Right-of-use assets, operating leases - June 30, 2019		36,633
Additions July 1, 2019-September 30, 2019		52
Amortization of right-of-use assets, July 1, 2019-September 30, 2019		(655)
Right-of-use assets, operating leases - September 30, 2019	$	36,030

Operating lease liabilities - January 1, 2019	$	39,545
Liability reduction, net January 1, 2019-March 31, 2019		(755)
Operating lease liabilities - March 31, 2019		38,790
Liability reduction, net April 1, 2019-June 30, 2019		(238)
Operating lease liabilities - June 30, 2019		38,552
Additions, July 1, 2019-September 30, 2019		52
Liability reduction, net July 1, 2019-September 30, 2019		(457)
Operating lease liabilities - September 30, 2019	$	38,147
Current portion of operating lease liabilities	$	2,997
Long-term operating lease liabilities	$	35,150

Schedule of lease cost and other information

Following are components of our lease costs (in thousands):


	Three months ended		Nine months ended
	September 30,		September 30,
	2019		2019
Operating leases	$	1,154	$	3,380
Short-term and variable leases		148		653
Total lease costs	$	1,302	$	4,033

Other information related to our operating leases was as follows (in thousands, except lease term and discount rate):


	Three months ended		Nine months ended
	September 30,		September 30,
	2019		2019
Cash outflows for operating leases	$	957	$	2,927
Sublease income as primary obligor	$	247	$	740

			September 30,
			2019
Weighted average remaining lease term (years)				19.49
Weighted average discount rate				5.2%

Schedule of future minimum lease payments

Undiscounted cash flows owed by the Company to lessors pursuant to contractual agreements in effect as of September 30, 2019 and related imputed interest was as follows (in thousands):


2019 (remainder of the year)	$	4,595
2020		4,448
2021		4,435
2022		4,094
2023		3,637
Thereafter		40,646
Total lease payments		61,855
Less imputed interest		(23,708)
Present value of operating lease liabilities	$	38,147

At December 31, 2018, future minimum lease payments under operating leases accounted for under ASC 840 was as follows (in thousands):


Years ending December 31:
2019	$	4,050
2020		4,308
2021		3,973
2022		3,050
2023		2,508
Thereafter		6,287
	$	24,176

REVENUE FROM CONTRACTS WITH CUSTOMERS (Tables)

9 Months Ended

Sep. 30, 2019

REVENUE FROM CONTRACTS WITH CUSTOMERS

Revenue disaggregated by category (in thousands)

The following table provides details of our revenue disaggregated by category of revenue (in thousands):


	Three months ended September 30,				Nine months ended September 30,
	2019		2018		2019		2018
Terminaling services fees:
Firm commitments (ASC 842/840 revenue)	$	46,130	$	39,753	$	131,307	$	117,608
Firm commitments (ASC 606 revenue)		3,351		3,467		10,789		10,443
Total firm commitments revenue		49,481		43,220		142,096		128,051
Ancillary revenue (ASC 606 revenue)		10,430		10,772		30,577		30,211
Ancillary revenue (ASC 842/840 revenue)		1,168		360		3,645		1,659
Total ancillary revenue		11,598		11,132		34,222		31,870
Total terminaling services fees		61,079		54,352		176,318		159,921
Pipeline transportation fees (ASC 842/840 revenue)		877		774		2,579		2,437
Management fees (ASC 606 revenue)		4,317		2,433		12,611		8,376
Management fees (ASC 842/840 revenue)		300		193		1,302		571
Total management fees		4,617		2,626		13,913		8,947
Total revenue	$	66,573	$	57,752	$	192,810	$	171,305

Schedule of estimated future ASC 606 revenue by segment (in thousands)

Estimated Future ASC 606 Revenue by Segment


	Gulf Coast		Midwest			Brownsville		River		Southeast		West Coast		Central
	Terminals		Terminals			Terminals		Terminals		Terminals		Terminals		Services		Total
2019 (remainder of the year)	$	1,164	$	140	$	—	$	309	$	—	$	1,051	$	—	$	2,664
2020		1,814		559		—		1,088		—		4,088		—		7,549
2021		1,510		47		—		519		—		3,953		—		6,029
2022		962		—		—		—		—		1,204		—		2,166
2023		—		—		—		—		—		—		—		—
Thereafter		—		—		—		—		—		—		—		—
Total estimated future ASC 606 revenue	$	5,450	$	746	$	—	$	1,916	$	—	$	10,296	$	—	$	18,408

BUSINESS SEGMENTS (Tables)

9 Months Ended

Sep. 30, 2019

BUSINESS SEGMENTS

Schedule of information related to financial performance of business segments (in thousands)

The financial performance of our business segments was as follows (in thousands):


	Three months ended				Nine months ended
	September 30,				September 30,
	2019		2018		2019		2018
Gulf Coast Terminals:
Terminaling services fees	$	18,930	$	15,824	$	52,074	$	48,462
Management fees		16		13		30		196
Revenue		18,946		15,837		52,104		48,658
Operating costs and expenses		(5,182)		(5,614)		(16,089)		(16,859)
Net margins		13,764		10,223		36,015		31,799
Midwest Terminals:
Terminaling services fees		3,115		2,644		8,356		7,468
Pipeline transportation fees		472		453		1,378		1,319
Revenue		3,587		3,097		9,734		8,787
Operating costs and expenses		(1,293)		(733)		(2,699)		(2,188)
Net margins		2,294		2,364		7,035		6,599
Brownsville Terminals:
Terminaling services fees		2,954		2,100		7,817		6,143
Pipeline transportation fees		405		321		1,201		1,118
Management fees		1,283		1,818		4,381		5,814
Revenue		4,642		4,239		13,399		13,075
Operating costs and expenses		(2,056)		(1,887)		(6,546)		(6,063)
Net margins		2,586		2,352		6,853		7,012
River Terminals:
Terminaling services fees		2,457		2,559		7,211		7,902
Revenue		2,457		2,559		7,211		7,902
Operating costs and expenses		(1,318)		(1,568)		(4,327)		(5,209)
Net margins		1,139		991		2,884		2,693
Southeast Terminals:
Terminaling services fees		22,039		21,349		65,167		61,098
Management fees		233		193		711		570
Revenue		22,272		21,542		65,878		61,668
Operating costs and expenses		(5,174)		(6,633)		(17,266)		(18,966)
Net margins		17,098		14,909		48,612		42,702
West Coast Terminals:
Terminaling services fees		11,584		9,876		35,693		28,848
Management fees		8		—		25		—
Revenue		11,592		9,876		35,718		28,848
Operating costs and expenses		(3,703)		(3,475)		(12,207)		(10,045)
Net margins		7,889		6,401		23,511		18,803
Central Services:
Management fees		3,077		602		8,766		2,367
Revenue		3,077		602		8,766		2,367
Operating costs and expenses		(5,669)		(3,604)		(17,050)		(12,248)
Net margins		(2,592)		(3,002)		(8,284)		(9,881)
Total net margins		42,178		34,238		116,626		99,727
General and administrative expenses		(4,603)		(4,823)		(17,979)		(16,322)
Insurance expenses		(1,240)		(1,227)		(3,819)		(3,744)
Deferred compensation expense		(376)		(483)		(1,469)		(2,941)
Depreciation and amortization		(13,362)		(12,375)		(39,121)		(37,471)
Earnings from unconsolidated affiliates		1,476		1,862		3,841		7,195
Gain from insurance proceeds		—		—		3,351		—
Operating income		24,073		17,192		61,430		46,444
Other expenses		(9,743)		(9,230)		(29,675)		(25,754)
Net earnings	$	14,330	$	7,962	$	31,755	$	20,690

Schedule of supplemental information about consolidated business segments (in thousands)

Supplemental information about our business segments is summarized below (in thousands):


	Three months ended September 30, 2019

	Gulf Coast		Midwest		Brownsville		River		Southeast		West Coast		Central
	Terminals		Terminals		Terminals		Terminals		Terminals		Terminals		Services		Total
Revenue:
External customers	$	17,096	$	3,587	$	2,684	$	2,457	$	22,272	$	11,592	$	—	$	59,688
Affiliate customers		1,850		—		1,958		—		—		—		3,077		6,885
Revenue	$	18,946	$	3,587	$	4,642	$	2,457	$	22,272	$	11,592	$	3,077	$	66,573
Capital expenditures	$	1,305	$	234	$	6,667	$	641	$	6,864	$	2,349	$	60	$	18,120
Identifiable assets	$	123,822	$	19,797	$	87,994	$	45,365	$	248,691	$	279,942	$	13,247	$	818,858
Cash and cash equivalents																348
Investments in unconsolidated affiliates																224,928
Revolving credit facility unamortized deferred issuance costs, net																4,242
Other																3,074
Total assets															$	1,051,450


	Three months ended September 30, 2018

	Gulf Coast		Midwest		Brownsville		River		Southeast		West Coast		Central
	Terminals		Terminals		Terminals		Terminals		Terminals		Terminals		Services		Total
Revenue:
External customers	$	13,774	$	3,097	$	2,158	$	2,559	$	21,542	$	9,876	$	—	$	53,006
Affiliate customers		2,063		—		2,081		—		—		—		602		4,746
Revenue	$	15,837	$	3,097	$	4,239	$	2,559	$	21,542	$	9,876	$	602	$	57,752
Capital expenditures	$	940	$	2	$	3,859	$	441	$	8,693	$	2,590	$	2	$	16,527


	Nine months ended September 30, 2019

	Gulf Coast		Midwest		Brownsville		River		Southeast		West Coast		Central
	Terminals		Terminals		Terminals		Terminals		Terminals		Terminals		Services		Total
Revenue:
External customers	$	45,712	$	9,734	$	7,039	$	7,211	$	65,878	$	35,718	$	—	$	171,292
Affiliate customers		6,392		—		6,360		—		—		—		8,766		21,518
Revenue	$	52,104	$	9,734	$	13,399	$	7,211	$	65,878	$	35,718	$	8,766	$	192,810
Capital expenditures	$	4,373	$	621	$	18,118	$	1,807	$	31,301	$	8,817	$	380	$	65,417


	Nine months ended September 30, 2018

	Gulf Coast		Midwest		Brownsville		River		Southeast		West Coast		Central
	Terminals		Terminals		Terminals		Terminals		Terminals		Terminals		Services		Total
Revenue:
External customers	$	42,312	$	8,787	$	6,982	$	7,902	$	61,668	$	28,848	$	—	$	156,499
Affiliate customers		6,346		—		6,093		—		—		—		2,367		14,806
Revenue	$	48,658	$	8,787	$	13,075	$	7,902	$	61,668	$	28,848	$	2,367	$	171,305
Capital expenditures	$	4,120	$	338	$	6,326	$	1,333	$	21,128	$	5,235	$	38	$	38,518

SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Details)	Feb. 26, 2019	Sep. 30, 2019	Feb. 12, 2018
6.125% senior notes due in 2026
Interest (as percent)		6.125%	6.125%
TLP Finance Holdings, LLC \| Common units
Conversion ratio of partner units converted into Partnership common units	1
Conversion ratio of incentive distribution rights converted into Partnership common units	100
TLP Finance Holdings, LLC
Ownership interest in subsidiary (as a percent)	100.00%

SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES - Assets and Liabilities of TMS (Details) - TMS $ in Thousands	Dec. 31, 2018 USD ($)
Business Acquisition [Line Items]
Cash	$ 694
Trade accounts receivable	7
Due from affiliates	456
Other current assets	456
Property, plant and equipment, net	991
Other assets, net	484
Trade accounts payable	(1,205)
Accrued and other liabilities	(3,025)
Equity	$ (1,142)

SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES - Property (Details)	9 Months Ended
	Sep. 30, 2019
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 ACCOUNTING POLICIES - Derivatives, Taxes and Earnings (Details) - USD ($) $ in Millions	9 Months Ended	12 Months Ended
	Sep. 30, 2019	Dec. 31, 2018
Income taxes
Provision for U.S. federal income taxes	$ 0.0	$ 0.0
Interest rate swap
Accounting for derivative instruments
Notional amount	$ 300.0
Fixed interest rate paid (as a percent)	2.04%

TRANSACTIONS WITH AFFILIATES - Agreements (Details) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2019 USD ($)	Sep. 30, 2018 USD ($)	Sep. 30, 2019 USD ($) item bbl	Sep. 30, 2018 USD ($)
June 2020 terminaling services agreement-Brownsville LLC \| Frontera \| Brownsville terminals
Transactions with affiliates
Number of Terminaling Services Agreements \| item			2
Storage capacity agreed to be provided (in barrels) \| bbl			301,000
Throughput revenue	$ 0.7	$ 0.7	$ 2.0	$ 1.9
June 2020 terminaling services agreement-Brownsville LLC \| Frontera \| Brownsville terminals \| Minimum
Transactions with affiliates
Notice period for termination of service agreement			90 days
June 2020 terminaling services agreement-Brownsville LLC \| Frontera \| Brownsville terminals \| Maximum
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%		50.00%
Revenue recognized	$ 1.3	1.3	$ 4.4	4.2
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	$ 1.9	2.1	$ 6.4	6.3
Operating and administrative agreement SeaPort Midstream Partners, LLC \| TMS \| Central Services
Transactions with affiliates
Number of refined terminals operated \| item			2
Operating and administrative agreement SeaPort Midstream Partners, LLC \| SeaPort Midstream Partners, LLC \| SeaPort Midstream Holdings, LLC \| Central Services
Transactions with affiliates
Ownership interest in joint venture (as a percent)	51.00%		51.00%
Operating and administrative agreement SeaPort Midstream Partners, LLC \| SeaPort Midstream Partners, LLC \| Central Services
Transactions with affiliates
Revenue recognized	$ 0.9	0.6	$ 2.6	2.4
Automatic renewal period of service agreement			1 year
Notice period for termination of service agreement			180 days
Operations and reimbursement agreement SeaPort Sound Terminal, LLC \| SeaPort Sound Terminal, LLC \| Central Services
Transactions with affiliates
Revenue recognized	2.0	0.0	$ 5.2	0.0
Reimbursement agreement \| ArcLight \| Central Services
Transactions with affiliates
Revenue recognized	$ 0.2	$ 0.0	$ 1.0	$ 0.0

CONCENTRATION OF CREDIT RISK AND TRADE ACCOUNTS RECEIVABLE (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2019	Sep. 30, 2018	Sep. 30, 2019	Sep. 30, 2018	Dec. 31, 2018
Concentration of credit risk and trade accounts receivable
Revenue in accordance with ASC 606	$ 4,100		$ 4,100
Trade accounts receivable	14,528		14,528		$ 14,158
Less allowance for doubtful accounts	(18)		(18)		(109)
Trade accounts receivable, net	$ 14,510		$ 14,510		$ 14,049
NGL Energy Partners LP
Concentration of credit risk and trade accounts receivable
Percentage of total revenue generated by major customer	19.00%	23.00%	20.00%	23.00%
RaceTrac Petroleum Inc
Concentration of credit risk and trade accounts receivable
Percentage of total revenue generated by major customer	10.00%	11.00%	10.00%	11.00%
Castleton Commodities International LLC
Concentration of credit risk and trade accounts receivable
Percentage of total revenue generated by major customer	10.00%	10.00%	10.00%	10.00%

OTHER CURRENT ASSETS (Details) - USD ($) $ in Thousands	9 Months Ended
OTHER CURRENT ASSETS (Details) - USD ($) $ in Thousands	Sep. 30, 2019	Dec. 31, 2018
OTHER CURRENT ASSETS
Amounts due from insurance companies	$ 1,228	$ 2,861
Prepaid insurance	2,242	1,371
Additive detergent	1,411	1,218
Deposits and other assets	1,048	2,647
Other current assets	5,929	$ 8,097
Reimbursements from insurance companies	2,300
Increase in estimated insurance recovery	$ 600

PROPERTY, PLANT AND EQUIPMENT, NET (Details) - USD ($) $ in Thousands	Sep. 30, 2019	Dec. 31, 2018
Property, plant and equipment, net
Property, plant and equipment, gross	$ 1,130,787	$ 1,074,040
Less accumulated depreciation	(422,226)	(384,870)
Property, plant and equipment, net	708,561	689,170
Land
Property, plant and equipment, net
Property, plant and equipment, gross	83,451	83,451
Terminals, pipelines and equipment
Property, plant and equipment, net
Property, plant and equipment, gross	987,192	918,537
Furniture, fixtures and equipment
Property, plant and equipment, net
Property, plant and equipment, gross	9,278	7,289
Construction in progress
Property, plant and equipment, net
Property, plant and equipment, gross	$ 50,866	$ 64,763

GOODWILL (Details) - USD ($) $ in Thousands	9 Months Ended	12 Months Ended
GOODWILL (Details) - USD ($) $ in Thousands	Sep. 30, 2019	Dec. 31, 2018
Goodwill
Goodwill	$ 9,428	$ 9,428
Brownsville and West Coast terminals
Goodwill
Impairment charges	0	0
Brownsville terminals
Goodwill
Goodwill	8,485	8,485
West Coast terminals
Goodwill
Goodwill	$ 943	$ 943

INVESTMENTS IN UNCONSOLIDATED AFFILIATES (Details) $ in Thousands, bbl in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2019 USD ($)	Sep. 30, 2018 USD ($)	Sep. 30, 2019 USD ($) bbl	Sep. 30, 2018 USD ($)	Dec. 31, 2018 USD ($)
INVESTMENTS IN UNCONSOLIDATED AFFILIATES
Carrying value of investments in unconsolidated affiliates	$ 224,928		$ 224,928		$ 227,031
Earnings from unconsolidated affiliates	1,476	$ 1,862	3,841	$ 7,195
Additional capital investments in unconsolidated affiliates	1,504		2,805	1,264
Cash distributions received from unconsolidated affiliates	$ 2,735	5,007	$ 8,749	13,018
BOSTCO
INVESTMENTS IN UNCONSOLIDATED AFFILIATES
Storage capacity \| bbl			7.1
Percentage of ownership	42.50%		42.50%		42.50%
Carrying value of investments in unconsolidated affiliates	$ 200,558		$ 200,558		$ 203,005
Excess investment	6,700		6,700		6,800
Earnings from unconsolidated affiliates	594	1,028	1,733	4,867
Additional capital investments in unconsolidated affiliates	1,504		2,580
Cash distributions received from unconsolidated affiliates	2,063	4,015	6,760	9,600
Balance sheets:
Current assets	18,523		18,523		19,299
Long-term assets	459,004		459,004		455,984
Current liabilities	(15,297)		(15,297)		(12,471)
Long-term liabilities	(6,176)		(6,176)		(1,259)
Net assets	456,054		456,054		$ 461,553
Statements of income:
Revenue	14,812	16,596	46,282	50,331
Expenses	(13,121)	(13,720)	(40,404)	(37,784)
Net income	$ 1,691	2,876	$ 5,878	12,547
Frontera
INVESTMENTS IN UNCONSOLIDATED AFFILIATES
Storage capacity \| bbl			1.7
Percentage of ownership	50.00%		50.00%		50.00%
Carrying value of investments in unconsolidated affiliates	$ 24,370		$ 24,370		$ 24,026
Earnings from unconsolidated affiliates	882	834	2,108	2,328
Additional capital investments in unconsolidated affiliates			225	1,264
Cash distributions received from unconsolidated affiliates	672	992	1,989	3,418
Balance sheets:
Current assets	5,945		5,945		5,866
Long-term assets	44,443		44,443		45,115
Current liabilities	(1,633)		(1,633)		(2,845)
Long-term liabilities	(15)		(15)		(84)
Net assets	48,740		48,740		$ 48,052
Statements of income:
Revenue	5,309	6,061	15,418	17,982
Expenses	(3,545)	(4,393)	(11,202)	(13,326)
Net income	$ 1,764	$ 1,668	$ 4,216	$ 4,656
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) - USD ($) $ in Thousands	9 Months Ended
OTHER ASSETS, NET (Details) - USD ($) $ in Thousands	Sep. 30, 2019	Dec. 31, 2018
OTHER ASSETS, NET
Customer relationships, net of accumulated amortization of $6,650 and $4,887, respectively	$ 42,780	$ 44,543
Revolving credit facility unamortized deferred issuance costs, net of accumulated amortization of $8,929 and $7,656, respectively	4,242	5,515
Amounts due under long-term terminaling services agreements	484	422
Deposits and other assets	2,100	774
Other assets, net	49,606	51,254
Accumulated amortization of customer relationships	6,650	4,887
Accumulated amortization of deferred financing costs	$ 8,929	$ 7,656
Amortization period of customer relationships	20 years

ACCRUED LIABILITIES (Details) - USD ($) $ in Thousands	9 Months Ended
ACCRUED LIABILITIES (Details) - USD ($) $ in Thousands	Sep. 30, 2019	Sep. 30, 2018	Dec. 31, 2018
ACCRUED LIABILITIES
Customer advances and deposits	$ 8,334		$ 11,927
Accrued property taxes	6,230		3,003
Accrued environmental obligations	1,627		1,556
Interest payable	3,169		7,814
Accrued expenses and other	10,060		7,646
Accrued liabilities	29,420		$ 31,946
Contract liabilities under ASC 606	900	$ 400
Revenue recognized from contract liabilities	800	$ 500
Increase in remediation obligations due to change in estimate	600
Accrued environmental obligations
Payments	$ 600

OTHER LIABILITIES (Details) - USD ($) $ in Thousands	9 Months Ended
OTHER LIABILITIES (Details) - USD ($) $ in Thousands	Sep. 30, 2019	Sep. 30, 2018	Dec. 31, 2018
OTHER LIABILITIES
Advance payments received under long-term terminaling services agreements	$ 3,564		$ 2,721
Deferred revenue	1,919		1,922
Other liabilities	5,483		4,643
Completed projects billed	700
Recognized revenue on a straight line basis for completed projects	700
Contract liabilities	100		$ 200
Revenue recognized from contract liabilities	$ 200	$ 1,000

LONG-TERM DEBT (Details) $ in Thousands	9 Months Ended
LONG-TERM DEBT (Details) $ in Thousands	Sep. 30, 2019 USD ($)	Sep. 30, 2018	Dec. 31, 2018 USD ($)	Feb. 12, 2018 USD ($)
Long-term debt
Senior notes unamortized deferred issuance costs, net of accumulated amortization of $1,329 and $704, respectively	$ (6,753)		$ (7,378)
Total long-term debt	636,147		598,622
Accumulated amortization	$ 1,329		704
Issuance costs			8,100
TLP Finance Corp
Long-term debt
Ownership interest in subsidiary (as a percent)	100.00%
TransMontaigne Partners LLC
Long-term debt
Amount of independent assets	$ 0
Amount of independent operations	0
6.125% senior notes due in 2026
Long-term debt
Total long-term debt	$ 300,000		300,000
Interest (as percent)	6.125%			6.125%
Sale of senior notes				$ 300,000
Credit facility
Long-term debt
Weighted average interest rate on borrowings (as a percent)	5.70%	5.00%
Outstanding borrowings under credit facility	$ 342,900		306,000
Outstanding borrowings under letters of credit	$ 1,300		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	$ 342,900		$ 306,000
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
Interest coverage ratio	2.75

DEFERRED COMPENSATION EXPENSE (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2019	Sep. 30, 2018	Sep. 30, 2019	Sep. 30, 2018
Additional disclosures
Deferred compensation expense	$ 376	$ 483	$ 1,469	$ 2,941
TMS
Additional disclosures
Deferred compensation expense			$ 1,500	2,700
TMS \| Restricted phantom units
Additional disclosures
Vesting (as a percent)			50.00%
TMS \| Restricted phantom units \| Tranche One
Additional disclosures
Earlier vesting, age threshold (in years)			60 years
TMS \| Restricted phantom units \| Tranche Two
Additional disclosures
Earlier vesting, age threshold (in years)			55 years
Earlier vesting, length of service threshold (in years)			10 years
TMS \| Restricted phantom units \| 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
Additional disclosures
Deferred compensation expense			$ 0	$ 200

COMMITMENTS AND CONTINGENCIES - Lease Terms (Details)	9 Months Ended
COMMITMENTS AND CONTINGENCIES - Lease Terms (Details)	Sep. 30, 2019
Lessee, Operating Lease, Existence of Option to Extend	true
Lessee, Operating Lease, Existence of Option to Terminate	true
Minimum
Operating lease term	1 year
Maximum
Operating lease term	42 years

COMMITMENTS AND CONTINGENCIES - Operating Leases Amounts Recognized (Details) - USD ($) $ in Thousands	3 Months Ended
	Sep. 30, 2019	Jun. 30, 2019	Mar. 31, 2019
Right-of-use assets, operating leases, ending balance	$ 36,030
Operating lease liabilities, ending balance	38,147
Current portion of operating lease liabilities	2,997
Long-term operating lease liabilities	35,150
Accounting Standards Update 2016-02
Right-of-use assets, operating leases, beginning balance	36,633	$ 37,287	$ 37,881
Additions	52
Amortization of right-of-use assets	(655)	(654)	(594)
Right-of-use assets, operating leases, ending balance	36,030	36,633	37,287
Operating lease liabilities, beginning balance	38,552	38,790	39,545
Additions	52
Liability reduction, net	(457)	(238)	(755)
Operating lease liabilities, ending balance	38,147	$ 38,552	$ 38,790
Current portion of operating lease liabilities	2,997
Long-term operating lease liabilities	$ 35,150

COMMITMENTS AND CONTINGENCIES - Lease cost (Details) - USD ($) $ in Thousands	3 Months Ended	9 Months Ended
	Sep. 30, 2019	Sep. 30, 2019
COMMITMENTS AND CONTINGENCIES
Operating leases	$ 1,154	$ 3,380
Short-term and variable leases	148	653
Total lease costs	$ 1,302	$ 4,033

COMMITMENTS AND CONTINGENCIES - Other Information (Details)	3 Months Ended	9 Months Ended
	Sep. 30, 2019 USD ($)	Sep. 30, 2019 USD ($)
COMMITMENTS AND CONTINGENCIES
Cash outflows for operating leases	$ 957,000	$ 2,927,000
Sublease income as primary obligor	$ 247.0	$ 740,000
Weighted average remaining lease term (years)	19 years 5 months 27 days	19 years 5 months 27 days
Weighted average discount rate	5.20%	5.20%

COMMITMENTS AND CONTINGENCIES - Undiscounted Cash Flows Owed (Details) $ in Thousands	Sep. 30, 2019 USD ($)
COMMITMENTS AND CONTINGENCIES
2019 (remainder of the year)	$ 4,595
2020	4,448
2021	4,435
2022	4,094
2023	3,637
Thereafter	40,646
Total lease payments	61,855
Less imputed interest	(23,708)
Present value of operating lease liabilities	38,147
Contractual commitments for supply of services, labor and materials	$ 24,700

COMMITMENTS AND CONTINGENCIES - Future Minimum Lease Payments (Details) $ in Thousands	Dec. 31, 2018 USD ($)
COMMITMENTS AND CONTINGENCIES
2019	$ 4,050
2020	4,308
2021	3,973
2022	3,050
2023	2,508
Thereafter	6,287
Total	$ 24,176

DISCLOSURES ABOUT FAIR VALUE (Details) - USD ($) $ in Thousands	Sep. 30, 2019	Dec. 31, 2018
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Senior notes	$ 636,147	$ 598,622
6.125% senior notes due in 2026
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Senior notes	300,000	$ 300,000
6.125% senior notes due in 2026 \| Level 2
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Debt	$ 290,300

REVENUE FROM CONTRACTS WITH CUSTOMERS - Disaggregated (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2019	Sep. 30, 2018	Sep. 30, 2019	Sep. 30, 2018
Disaggregation of Revenue [Line Items]
Total revenue	$ 66,573	$ 57,752	$ 192,810	$ 171,305
Firm commitments revenue
Disaggregation of Revenue [Line Items]
ASC 842/840 revenue	46,130	39,753	131,307	117,608
ASC 606 revenue	3,351	3,467	10,789	10,443
Total revenue	49,481	43,220	142,096	128,051
Ancillary revenue
Disaggregation of Revenue [Line Items]
ASC 842/840 revenue	1,168	360	3,645	1,659
ASC 606 revenue	10,430	10,772	30,577	30,211
Total revenue	11,598	11,132	34,222	31,870
Terminaling services fees
Disaggregation of Revenue [Line Items]
Total revenue	61,079	54,352	176,318	159,921
Pipeline transportation fees
Disaggregation of Revenue [Line Items]
ASC 842/840 revenue	877	774	2,579	2,437
Management fees
Disaggregation of Revenue [Line Items]
ASC 842/840 revenue	300	193	1,302	571
ASC 606 revenue	4,317	2,433	12,611	8,376
Total revenue	$ 4,617	$ 2,626	$ 13,913	$ 8,947

BUSINESS SEGMENTS (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
BUSINESS SEGMENTS (Details) - USD ($) $ in Thousands	Sep. 30, 2019	Sep. 30, 2018	Sep. 30, 2019	Sep. 30, 2018	Dec. 31, 2018
Segments of business
Revenue	$ 66,573	$ 57,752	$ 192,810	$ 171,305
Operating costs and expenses	(24,395)	(23,514)	(76,184)	(71,578)
Net margins	42,178	34,238	116,626	99,727
General and administrative expenses	(4,603)	(4,823)	(17,979)	(16,322)
Insurance expenses	(1,240)	(1,227)	(3,819)	(3,744)
Deferred compensation expense	(376)	(483)	(1,469)	(2,941)
Depreciation and amortization	(13,362)	(12,375)	(39,121)	(37,471)
Earnings from unconsolidated affiliates	1,476	1,862	3,841	7,195
Gain from insurance claim			3,351
Operating income	24,073	17,192	61,430	46,444
Other expenses	(9,743)	(9,230)	(29,675)	(25,754)
Net earnings	14,330	7,962	31,755	20,690
Capital expenditures	18,120	16,527	65,417	38,518
Identifiable assets	818,858		818,858
Cash and cash equivalents	348		348		$ 1,026
Investments in unconsolidated affiliates	224,928		224,928		227,031
Revolving credit facility unamortized deferred issuance costs, net	4,242		4,242		5,515
Other	3,074		3,074
TOTAL ASSETS	1,051,450		1,051,450		$ 1,002,008
External customers
Segments of business
Revenue	59,688	53,006	171,292	156,499
Affiliate customers
Segments of business
Revenue	6,885	4,746	21,518	14,806
Gulf Coast Terminals
Segments of business
Revenue	18,946	15,837	52,104	48,658
Operating costs and expenses	(5,182)	(5,614)	(16,089)	(16,859)
Net margins	13,764	10,223	36,015	31,799
Capital expenditures	1,305	940	4,373	4,120
Identifiable assets	123,822		123,822
Gulf Coast Terminals \| External customers
Segments of business
Revenue	17,096	13,774	45,712	42,312
Gulf Coast Terminals \| Affiliate customers
Segments of business
Revenue	1,850	2,063	6,392	6,346
Midwest Terminals
Segments of business
Revenue	3,587	3,097	9,734	8,787
Operating costs and expenses	(1,293)	(733)	(2,699)	(2,188)
Net margins	2,294	2,364	7,035	6,599
Capital expenditures	234	2	621	338
Identifiable assets	19,797		19,797
Midwest Terminals \| External customers
Segments of business
Revenue	3,587	3,097	9,734	8,787
Brownsville terminals
Segments of business
Revenue	4,642	4,239	13,399	13,075
Operating costs and expenses	(2,056)	(1,887)	(6,546)	(6,063)
Net margins	2,586	2,352	6,853	7,012
Capital expenditures	6,667	3,859	18,118	6,326
Identifiable assets	87,994		87,994
Brownsville terminals \| External customers
Segments of business
Revenue	2,684	2,158	7,039	6,982
Brownsville terminals \| Affiliate customers
Segments of business
Revenue	1,958	2,081	6,360	6,093
River terminals
Segments of business
Revenue	2,457	2,559	7,211	7,902
Operating costs and expenses	(1,318)	(1,568)	(4,327)	(5,209)
Net margins	1,139	991	2,884	2,693
Capital expenditures	641	441	1,807	1,333
Identifiable assets	45,365		45,365
River terminals \| External customers
Segments of business
Revenue	2,457	2,559	7,211	7,902
Southeast terminals
Segments of business
Revenue	22,272	21,542	65,878	61,668
Operating costs and expenses	(5,174)	(6,633)	(17,266)	(18,966)
Net margins	17,098	14,909	48,612	42,702
Capital expenditures	6,864	8,693	31,301	21,128
Identifiable assets	248,691		248,691
Southeast terminals \| External customers
Segments of business
Revenue	22,272	21,542	65,878	61,668
West Coast terminals
Segments of business
Revenue	11,592	9,876	35,718	28,848
Operating costs and expenses	(3,703)	(3,475)	(12,207)	(10,045)
Net margins	7,889	6,401	23,511	18,803
Capital expenditures	2,349	2,590	8,817	5,235
Identifiable assets	279,942		279,942
West Coast terminals \| External customers
Segments of business
Revenue	11,592	9,876	35,718	28,848
Central Services
Segments of business
Revenue	3,077	602	8,766	2,367
Operating costs and expenses	(5,669)	(3,604)	(17,050)	(12,248)
Net margins	(2,592)	(3,002)	(8,284)	(9,881)
Capital expenditures	60	2	380	38
Identifiable assets	13,247		13,247
Central Services \| Affiliate customers
Segments of business
Revenue	3,077	602	8,766	2,367
Terminaling services fees
Segments of business
Revenue	61,079	54,352	176,318	159,921
Terminaling services fees \| Gulf Coast Terminals
Segments of business
Revenue	18,930	15,824	52,074	48,462
Terminaling services fees \| Midwest Terminals
Segments of business
Revenue	3,115	2,644	8,356	7,468
Terminaling services fees \| Brownsville terminals
Segments of business
Revenue	2,954	2,100	7,817	6,143
Terminaling services fees \| River terminals
Segments of business
Revenue	2,457	2,559	7,211	7,902
Terminaling services fees \| Southeast terminals
Segments of business
Revenue	22,039	21,349	65,167	61,098
Terminaling services fees \| West Coast terminals
Segments of business
Revenue	11,584	9,876	35,693	28,848
Pipeline transportation fees \| Midwest Terminals
Segments of business
Revenue	472	453	1,378	1,319
Pipeline transportation fees \| Brownsville terminals
Segments of business
Revenue	405	321	1,201	1,118
Management fees
Segments of business
Revenue	4,617	2,626	13,913	8,947
Management fees \| Gulf Coast Terminals
Segments of business
Revenue	16	13	30	196
Management fees \| Brownsville terminals
Segments of business
Revenue	1,283	1,818	4,381	5,814
Management fees \| Southeast terminals
Segments of business
Revenue	233	193	711	570
Management fees \| West Coast terminals
Segments of business
Revenue	8		25
Management fees \| Central Services
Segments of business
Revenue	$ 3,077	$ 602	$ 8,766	$ 2,367

SUBSEQUENT EVENT	9 Months Ended
SUBSEQUENT EVENT	Sep. 30, 2019
SUBSEQUENT EVENT
SUBSEQUENT EVENT	(17) SUBSEQUENT EVENT No subsequent transactions or events warranted recognition or disclosure in the accompanying financials or notes thereto.

SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES - Accounting for operations (Details) bbl in Millions	9 Months Ended
	Sep. 30, 2019 bbl
Lucknow-Highspire Terminals, LLC
Related Party Transaction [Line Items]
Terminal storage capacity (in barrels)	9.8

REVENUE FROM CONTRACTS WITH CUSTOMERS - Contract Revenue (Details) $ in Thousands	9 Months Ended
	Sep. 30, 2019 USD ($)
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Total estimated future ASC 606 revenue	$ 18,408
Estimated revenue in accordance with ASC 842, remainder of 2019	46,000
Estimated revenue in accordance with ASC 842, 2020	160,100
Estimated revenue in accordance with ASC 842, 2021	127,200
Estimated revenue in accordance with ASC 842, 2022	95,300
Estimated revenue in accordance with ASC 842, 2023	81,500
Estimated revenue in accordance with ASC 842, thereafter	542,600
Gulf Coast Terminals
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Total estimated future ASC 606 revenue	5,450
Midwest Terminals
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Total estimated future ASC 606 revenue	746
River terminals
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Total estimated future ASC 606 revenue	1,916
West Coast terminals
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Total estimated future ASC 606 revenue	10,296
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2019-10-01
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Total estimated future ASC 606 revenue	$ 2,664
Remaining Performance Obligation, Expected Timing of Satisfaction, Period	3 months
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2019-10-01 \| Gulf Coast Terminals
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Total estimated future ASC 606 revenue	$ 1,164
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2019-10-01 \| Midwest Terminals
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Total estimated future ASC 606 revenue	140
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2019-10-01 \| River terminals
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Total estimated future ASC 606 revenue	309
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2019-10-01 \| West Coast terminals
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Total estimated future ASC 606 revenue	1,051
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2020-01-01
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Total estimated future ASC 606 revenue	$ 7,549
Remaining Performance Obligation, Expected Timing of Satisfaction, Period	1 year
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2020-01-01 \| Gulf Coast Terminals
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Total estimated future ASC 606 revenue	$ 1,814
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2020-01-01 \| Midwest Terminals
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Total estimated future ASC 606 revenue	559
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]
Total estimated future ASC 606 revenue	1,088
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]
Total estimated future ASC 606 revenue	4,088
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2021-01-01
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Total estimated future ASC 606 revenue	$ 6,029
Remaining Performance Obligation, Expected Timing of Satisfaction, Period	1 year
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2021-01-01 \| Gulf Coast Terminals
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Total estimated future ASC 606 revenue	$ 1,510
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2021-01-01 \| Midwest Terminals
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Total estimated future ASC 606 revenue	47
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]
Total estimated future ASC 606 revenue	519
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]
Total estimated future ASC 606 revenue	3,953
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2022-01-01
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Total estimated future ASC 606 revenue	$ 2,166
Remaining Performance Obligation, Expected Timing of Satisfaction, Period	1 year
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2022-01-01 \| Gulf Coast Terminals
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Total estimated future ASC 606 revenue	$ 962
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2022-01-01 \| West Coast terminals
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Total estimated future ASC 606 revenue	$ 1,204
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2024-01-01
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Remaining Performance Obligation, Expected Timing of Satisfaction, Period	0 years