Southcross Energy Partners 10-Q 5 Aug 16 2016 Q2 Quarterly report Financial data

Document and Entity Information

Document and Entity Information - shares	6 Months Ended
	Jun. 30, 2016	Aug. 02, 2016
Entity Registrant Name	Southcross Energy Partners, L.P.
Entity Central Index Key	1,547,638
Document Type	10-Q
Document Period End Date	Jun. 30, 2016
Amendment Flag	false
Current Fiscal Year End Date	--12-31
Entity Current Reporting Status	Yes
Entity Filer Category	Accelerated Filer
Document Fiscal Year Focus	2,016
Document Fiscal Period Focus	Q2
Common Units [Member]
Entity Common Stock, Shares Outstanding		36,923,934
Class B Convertible Units [Member]
Entity Common Stock, Shares Outstanding		16,522,484
Subordinated Units [Member]
Entity Common Stock, Shares Outstanding		12,213,713

CONDENSED CONSOLIDATED BALANCE

CONDENSED CONSOLIDATED BALANCE SHEETS - USD ($) $ in Thousands	Jun. 30, 2016	Dec. 31, 2015
Current assets:
Cash and cash equivalents	$ 4,859	$ 11,348
Trade accounts receivable	29,860	39,585
Due from Affiliate, Current	16,269	49,734
Prepaid expenses	2,576	3,915
Deposits Assets, Current	3,837	0
Other current assets	961	1,256
Total current assets	58,362	105,838
Property, plant and equipment, net	1,034,266	1,066,001
Investments in and Advance to Affiliates, Subsidiaries, Associates, and Joint Ventures	138,461	140,526
Other assets	1,675	6,595
Total assets	1,232,764	1,318,960
Current liabilities:
Accounts payable and accrued liabilities	36,081	66,458
Due to Affiliate, Current	7,304	7,871
Other Long-term Debt, Current	4,500	4,500
Other current liabilities	6,472	10,406
Total current liabilities	54,357	89,235
Long-term Debt, Excluding Current Maturities	552,685	604,518
Other non-current liabilities	10,341	3,871
Total liabilities	617,383	697,624
Partners' capital:
Total partners' capital	615,381	621,336
Liabilities, preferred units, and partners' capital:
Total liabilities, preferred units and partners' capital	1,232,764	1,318,960
Limited Partner, units authorized
Partners' capital:
Total partners' capital	274,990	271,236
Class B Convertible Units [Member]
Partners' capital:
Total partners' capital	295,801	300,596
Subordinated Units [Member]
Partners' capital:
Total partners' capital	32,995	37,920
General Partner interest [Member]
Partners' capital:
General Partner interest	11,595	11,584
Total partners' capital	$ 11,595	$ 11,584

CONDENSED CONSOLIDATED BALANCE3

CONDENSED CONSOLIDATED BALANCE SHEETS (Parenthetical) - USD ($)	Jun. 30, 2016	Dec. 31, 2015
Limited Partner, units authorized
Partners' capital:
Limited Partner, units authorized	38,186,399	29,544,524
Limited Partner, units issued	36,902,492	28,420,619
Limited Partner, units outstanding	21,896,904	15,005,588
Subordinated Units [Member]
Partners' capital:
Limited Partner, units authorized	12,213,713
Limited Partner, units issued		12,213,713
Limited Partner, units outstanding	12,213,713	12,213,713
Class B Convertible Units [Member]
Partners' capital:
Preferred Units Cumulative Right to Receive Future Cash Distributions	$ 16,522,484	$ 15,958,990
Preferred units issued
Temporary Equity, Shares Outstanding	0	1,769,915

CONDENSED CONSOLIDATED STATEMEN

CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS - USD ($) shares in Thousands, $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2016	Jun. 30, 2015	Jun. 30, 2016	Jun. 30, 2015
Revenues	$ 100,141	$ 146,129	$ 195,596	$ 324,620
Revenue from Related Parties	24,561	21,091	48,832	28,538
Total revenues	124,702	167,220	244,428	353,158
Expenses:
Cost of natural gas and liquids sold	85,619	124,595	165,066	265,710
Operations and maintenance	19,615	19,834	36,393	42,388
Depreciation and amortization	18,908	17,571	37,449	34,603
General and administrative	8,162	9,003	16,048	16,809
Asset Impairment Charges	0	193	0	193
Loss (gain) on sale of assets, net	(12,576)	(38)	(12,576)	180
Total expenses	119,728	171,158	242,380	359,883
Income (loss) from operations	4,974	(3,938)	2,048	(6,725)
Income (Loss) from Equity Method Investments	(3,534)	(3,604)	(6,963)	(7,155)
Interest expense	(8,833)	(7,900)	(18,003)	(15,398)
Other Cost and Expense, Operating	(12,367)	(11,504)	(24,966)	(22,553)
Loss before income tax benefit (expense)	(7,393)	(15,442)	(22,918)	(29,278)
Income tax benefit (expense)	(3)	(9)	3	(78)
Net loss	(7,396)	(15,451)	(22,915)	(29,356)
General partner unit in-kind distribution				137
Net loss attributable to partners	(7,422)	(14,409)	(22,941)	(25,235)
Earnings per unit and distributions declared
Net loss allocated to limited partner, basic and diluted			(22,915)	(29,356)
General Partner [Member]
Expenses:
Net loss	(156)	(306)	(465)
General partner unit in-kind distribution	26	61	26	137
Earnings per unit and distributions declared
Net loss allocated to limited partner, basic and diluted				(502)
Southcross Holdings Common [Member]
Expenses:
Net loss attributable to partners	0	(1,103)	0	(4,258)
Earnings per unit and distributions declared
Net loss allocated to limited partner, basic and diluted				(4,258)
Common Limited Partners [Member]
Earnings per unit and distributions declared
Net loss allocated to limited partner, basic and diluted	$ (3,953)	$ (6,928)	$ (11,782)	$ (11,830)
Weighted average number of limited partner units outstanding, basic and diluted	33,921	26,477	31,183	25,143
Basic and diluted loss per unit (in dollars per unit)	$ (0.12)	$ (0.26)	$ (0.38)	$ (0.47)
Subordinated Limited Partners [Member]
Earnings per unit and distributions declared
Net loss allocated to limited partner, basic and diluted	$ (1,423)	$ (3,194)	$ (4,613)	$ (5,744)
Weighted average number of limited partner units outstanding, basic and diluted	12,214	12,214	12,214	12,214
Basic and diluted loss per unit (in dollars per unit)	$ (0.12)	$ (0.26)	$ (0.38)	$ 0
Cash Distribution [Member] | Subordinated Limited Partners [Member] | Limited Partners
Earnings per unit and distributions declared
Distribution Made to Limited Partner, Distributions Declared, Per Unit	$ 0	$ 400	$ 0	$ 800

CONDENSED CONSOLIDATED STATEME5

CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (LOSS) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2016	Jun. 30, 2015	Jun. 30, 2016	Jun. 30, 2015
Statement of Comprehensive Income [Abstract]
Net loss	$ (7,396)	$ (15,451)	$ (22,915)	$ (29,356)

CONDENSED CONSOLIDATED STATEME6

CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2016	Jun. 30, 2015
Cash flows from operating activities:
Net loss	$ (22,915)	$ (29,356)
Depreciation and amortization	37,449	34,603
Unit-based compensation	1,706	2,475
Other Noncash Expense	1,904	1,727
Gain (Loss) on Sale of Assets and Asset Impairment Charges	(12,576)	180
Unrealized loss (gain) on financial instruments	(55)	221
Income (Loss) from Equity Method Investments, Net of Dividends or Distributions	6,963	7,155
Proceeds from Equity Method Investment, Dividends or Distributions	390	0
Asset Impairment Charges	0	193
Other Operating Activities, Cash Flow Statement	(184)	(2)
Changes in operating assets and liabilities:	44,409	16,951
Increase (Decrease) in Prepaid Expense and Other Assets	1,502	780
Increase (Decrease) in Deposits Outstanding	(3,837)	0
Increase (Decrease) in Other Noncurrent Assets	0	76
Increase (Decrease) in Accounts Payable and Accrued Liabilities	(27,808)	(31,404)
Increase (Decrease) in Other Operating Liabilities	3,000	904
Net Cash Provided by (Used in) Operating Activities	29,948	4,503
Net cash provided by operating activities
Capital expenditures	(12,434)	(64,959)
Insurance proceeds from property damage claims, net of expenditures	125	100
Net proceeds from sales of assets	20,402	4,693
Consideration paid for Holdings' drop-down acquisition	0	(15,000)
Investment contributions to joint venture investments	(5,287)	(2,474)
Net cash provided by (used in) investing activities	2,806	(77,640)
Net Cash Provided by (Used in) Financing Activities, Continuing Operations [Abstract]
Proceeds from Lines of Credit	3,110	102,000
Repayments of Long-term Lines of Credit	(54,250)	(15,000)
Repayments of Long-term Debt	(2,250)	(2,250)
Borrowings under our credit facility	(204)	(276)
Financing costs	(86)	(602)
Payments Related to Tax Withholding for Share-based Compensation	(57)	0
Payments of Capital Distribution	0	23,306
Affiliate Costs	0	17,858
Borrowing of senior unsecured PIK notes	14,000	0
Repayments of Notes Payable	14,260	0
Related Party Transaction Reimbursement Expenses from Transactions with Related Party	2,637	0
Contributions from general partner	0	1,281
Proceeds from (Payments for) Other Financing Activities	11,884	0
Proceeds from (Repayments of) Debt	233	0
Net Cash Provided by (Used in) Financing Activities	(39,243)	79,705
Net increase (decrease) in cash and cash equivalents	(6,489)	6,568
Cash and cash equivalents — Beginning of period	11,348	1,649
Cash and cash equivalents — End of period	$ 4,859	$ 8,217

CONDENSED CONSOLIDATED STATEME7

CONDENSED CONSOLIDATED STATEMENTS OF CHANGES IN PARTNERS' CAPITAL - USD ($) $ in Thousands	Total	Southcross Holdings Common [Member]	Common	CommonClass B Convertible Units [Member]	Class B Convertible Units [Member]	Class B Convertible Units [Member]Class B Convertible Units [Member]	Subordinated	SubordinatedClass B Convertible Units [Member]	SubordinatedSubordinated Units [Member]	General Partner [Member]	General Partner [Member]Class B Convertible Units [Member]	Southcross Holdings Common [Member]	Common Units [Member]Common	valley wells [Member]	valley wells [Member]Southcross Holdings Common [Member]	valley wells [Member]Common
Increase (Decrease) in Shareholders' Equity
Total partners' capital	$ 697,104		$ 259,735		$ 298,833		$ 48,831			$ 12,385		$ 77,320
Net loss	(29,356)
Payments of Stock Issuance Costs					7,100					561
Net loss allocated to limited partner, basic and diluted	(29,356)		(11,830)		(7,100)		(5,744)		$ (5,694)	(502)		$ (4,258)	$ (11,802)
Business Combination, Consideration Transferred	(15,000)	$ (77,640)	(62,640)
Series A convertible preferred unit in-kind distribution and fair value adjustment				$ 4,414	(6,706)	$ (6,706)		$ 2,158			$ 134
Partners' Capital Account, Distributions	(23,306)		(19,040)				(3,432)			(834)
Contributions from general partner	(1,281)									(1,281)
Class B Convertible unit in-kind distribution			92				45			(137)
Partners' Capital Account, Unit-based Compensation	2,333		2,333
Accrued Distribution on Long Term Incentive Plan	444		444
Payments Related to Tax Withholding for Share-based Compensation	0
Affiliate Costs	17,858													$ 518		$ 518
Payments to Acquire Businesses and Interest in Affiliates	15,000	15,000
Business Acquisition, Transaction Costs	17,858														$ 17,858
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Net		(29,716)	(14,806)		(7,929)		(6,387)			(594)
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Liabilities	1,436	1,436
Total partners' capital	667,424		304,240		306,368		43,889			12,927
Total partners' capital	621,336		271,236		300,596		37,920			11,584
Net loss	(22,915)				(6,081)					(465)
Payments of Stock Issuance Costs										459
Net loss allocated to limited partner, basic and diluted	(22,915)		(11,782)		(6,081)		(4,613)		$ (4,607)				$ (11,768)
Business Combination, Consideration Transferred	0
Series A convertible preferred unit in-kind distribution and fair value adjustment				$ 945		$ (1,293)		$ 314			$ 34
Class B Convertible unit in-kind distribution			15		7		4			(26)
Equity contribution from Holdings	12,661		12,416							245
Partners' Capital Account, Unit-based Compensation	1,706		1,706
Accrued Distribution on Long Term Incentive Plan	(11)		(11)
Payments Related to Tax Withholding for Share-based Compensation	(57)		(57)
Affiliate Costs	0													$ 2,406		$ 2,406
Payments to Acquire Businesses and Interest in Affiliates	0
Interest Receivable										233
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Assets		$ 0
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Liabilities	0
Total partners' capital	$ 615,381		$ 274,990		$ 295,801		$ 32,995			$ 11,595

ORGANIZATION AND DESCRIPTION OF

ORGANIZATION AND DESCRIPTION OF BUSINESS	6 Months Ended
	Jun. 30, 2016
Organization, Consolidation and Presentation of Financial Statements [Abstract]
ORGANIZATION AND DESCRIPTION OF BUSINESS	ORGANIZATION AND DESCRIPTION OF BUSINESS Organization Southcross Energy Partners, L.P. (the "Partnership," "Southcross," "we," "our" or "us") is a Delaware limited partnership formed in April 2012. Our common units are listed on the New York Stock Exchange under the symbol “SXE.” We are a master limited partnership, headquartered in Dallas, Texas, that provides natural gas gathering, processing, treating, compression and transportation services and NGL fractionation and transportation services. We also source, purchase, transport and sell natural gas and NGLs. Our assets are located in South Texas, Mississippi and Alabama and include four gas processing plants, two fractionation facilities and our pipelines. Southcross Holdings LP, a Delaware limited partnership (“Holdings”), indirectly owns 100% of Southcross Energy Partners GP, LLC, a Delaware limited liability company, our General Partner (“General Partner”) (and therefore controls us), all of our subordinated and Class B convertible units and 40.7% of our common units. Our General Partner owns an approximate 2.0% interest in us and all of our incentive distribution rights. Following the emergence of Holdings from its Chapter 11 reorganization proceeding on April 13, 2016 (as discussed below), EIG Global Energy Partners, LLC (“EIG”) and Tailwater Capital LLC (“Tailwater”) (collectively, the “Sponsors”) each indirectly own approximately one-third of Holdings, and a group of consolidated lenders under Holdings' term loan (the “Lenders”) own the remaining one-third equity interest. Holdings Chapter 11 Reorganization On March 28, 2016, Holdings and certain of its subsidiaries (excluding us, our General Partner and our subsidiaries) filed a pre-packaged plan of reorganization (the “POR”) under Chapter 11 of the U.S. Bankruptcy Code in the Southern District of Texas to restructure its debt obligations and strengthen its balance sheet. Our operations, customers, suppliers, partners and other constituents were excluded from such proceeding. On April 11, 2016, the bankruptcy court confirmed Holdings’ POR, and on April 13, 2016, Holdings and its subsidiaries emerged from its bankruptcy with the Lenders being issued 33.34% of the limited partner interests in Holdings in exchange for the elimination of certain funded debt obligations. EIG and Tailwater each contributed $85 million in cash (or $170 million in the aggregate) in exchange for each Sponsor receiving 33.33% of the limited partner interests in Holdings. In addition, Holdings committed to provide us $50 million (as part of the Equity Cure Agreement defined below), out of the $170 million in new equity contributed to Holdings from the Sponsors, to provide us with sufficient liquidity to comply with the applicable financial covenants set forth in our credit agreement. We believe Holdings’ reorganization and POR will enhance our liquidity position, strengthen our balance sheet and position Holdings to continue to support our business and growth. Liquidity Consideration Energy commodity prices declined substantially in 2014 due to a number of factors, including a continuing growth of supply, slowdown or decline in demand and challenges in global economic, financial and monetary markets. The continued, sustained low natural gas, NGL and crude oil prices have negatively impacted natural gas and oil exploration and production activity levels industry-wide. Our future cash flow will be materially adversely affected if this prolonged pricing deterioration continues for the commodities we sell or if the reduction in drilling for oil or natural gas continues in the geographic areas in which we operate continues, including the Eagle Ford Shale region. The majority of our revenue is derived from fixed-fee contracts, which have limited direct exposure to commodity price levels since we are paid based on the volumes of natural gas that we gather, process, treat, compress and transport and the volumes of NGLs we fractionate and transport, rather than being paid based on the value of the underlying natural gas or NGLs. In addition, a portion of our contract portfolio contains minimum volume commitment arrangements. The majority of our volumes are dependent upon the level of producer drilling activity. After considering these uncertainties, our forecast indicates future shortfalls in the amount of consolidated EBITDA (as defined in the Third Amended and Restated Revolving Credit Agreement with Wells Fargo, N.A., UBS Securities LLC and Barclays Bank PLC and a syndicate of lenders (the “Third A&R Revolving Credit Agreement”), as amended in May 2015) necessary to remain in compliance with the consolidated total leverage ratio of our Financial Covenants (as defined in Note 6) in our Credit Facility (as defined in Note 6) for the remainder of 2016. As discussed in further detail in Note 6 , we have the right to cure such a Financial Covenant Default (as defined in Note 6 ) by either our Sponsors or Holdings purchasing equity interests in or making capital contributions (an equity cure) resulting in, among other things, proceeds that, if added to consolidated EBITDA, would result in us satisfying the Financial Covenants. Once such an equity cure is made, it is included in our consolidated EBITDA calculation in any rolling twelve month period that includes the quarter that was cured. Should there be an event of default under the Credit Facility, and such default is not cured, we also would experience a cross default under our Term Loan Agreement (defined in Note 6 ) and all of our debt would become due and payable to our lenders. On March 17, 2016, we entered into an equity cure contribution agreement (the “Equity Cure Agreement”) with Holdings whereby we have the right to cure any default with respect to our Financial Covenants by having Holdings purchase equity interests in or make capital contributions to us, in an aggregate amount of up to $50 million . The fair value of the Equity Cure Agreement was not material at inception. In connection with Holdings' Chapter 11 reorganization, and pursuant to the terms of the Equity Cure Agreement, Holdings has committed to contribute up to $50 million to us (the “Contribution Amount”) to ensure we have sufficient liquidity to comply with applicable Financial Covenants through the quarter ended December 31, 2016. In exchange for the Contribution Amount, we will issue Holdings a number of our common units representing limited partner interests equal to, subject to certain exceptions, (i) the applicable Contribution Amount divided by (ii) a common unit reference price (“Reference Price”) equal to the volume weighted daily average price of the common units on the New York Stock Exchange (“VWAP”) calculated for a period of 15 trading days ending two trading days prior to the contribution by Holdings. As of June 30, 2016 , we were in compliance with the consolidated total leverage ratio of our Financial Covenants. However, we used an aggregate $12.4 million of the $50 million equity commitment from Holdings to fund equity cures as of December 31, 2015 and March 31, 2016. In accordance with the requirements above and the amounts funded for these equity cures, Holdings was issued 8,029,729 common units on May 2, 2016 for the fourth quarter 2015 equity cure ( $11.9 million ) that was funded in March 2016 and 359,459 common units on May 13, 2016 for the first quarter 2016 equity cure ( $0.5 million ) that was funded in July 2016. We anticipate funding additional equity cures needed to maintain compliance with our Financial Covenants through the end of 2016 with the equity commitment from Holdings or other equity contributions from Holdings. Therefore, these financial statements have been presented as if we will continue as a going concern. See Note 6. On January 7, 2016, in response to our need for additional liquidity, we issued at par senior unsecured PIK notes in the aggregate principal amount of $14.0 million (the "PIK Notes") to affiliates of EIG and Tailwater, with interest at a rate of 7% due January 7, 2017. Contemporaneous with the resolution of Holdings’ bankruptcy proceedings in April 2016, the PIK Notes and the related PIK interest of $0.3 million were repaid in full. Distribution Suspension The board of directors of our General Partner voted not to pay a quarterly distribution with respect to the fourth quarter of 2015 and the first and second quarters of 2016 and instead, based on current conditions, to reserve any excess cash for the operation of our business. The board of directors of our General Partner and our management believe this suspension to be in the best interest of our unitholders. The board of directors and management will continue to evaluate the Partnership's ability to reinstate the distribution in future periods. See Note 3. Segments Our chief operating decision-maker is our General Partner’s Chief Executive Officer, who reviews financial information presented on a consolidated basis in order to assess our performance and make decisions about resource allocations. There are no segment managers who are held accountable by the chief operating decision-maker, or anyone else, for operations, operating results and planning for levels or components below the consolidated unit level. Accordingly, we have determined that we have one reportable segment.

BASIS OF PRESENTATION AND SUMMA

BASIS OF PRESENTATION AND SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES	6 Months Ended
	Jun. 30, 2016
Accounting Policies [Abstract]
BASIS OF PRESENTATION AND SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES	Basis of Presentation We prepared this report under the rules and regulations of the Securities and Exchange Commission (the “SEC”) and in accordance with accounting principles generally accepted in the United States of America (“GAAP”) for interim financial statements. Accordingly, these condensed consolidated financial statements do not include all of the disclosures required by GAAP and should be read in conjunction with our 2015 Annual Report on Form 10-K (“2015 Annual Report on Form 10-K”). The condensed consolidated financial statements as of June 30, 2016 and December 31, 2015 , and for the three and six months ended June 30, 2016 and 2015 , are unaudited and have been prepared on the same basis as the audited financial statements included in our 2015 Annual Report on Form 10-K. Adjustments (consisting of normal recurring adjustments) necessary for a fair presentation of the results of operations and financial position have been included herein. All intercompany accounts and transactions have been eliminated in the preparation of the accompanying condensed consolidated financial statements. We recognized the 2015 Holdings Acquisition (defined in Note 2) at Holdings’ historical cost because the acquisition was executed by entities under common control. Thus, the difference between consideration paid and Holdings’ historical cost (net book value) at May 7, 2015, the date on which the 2015 Holdings Acquisition closed, was recorded as an increase to partners’ capital. Due to the common control aspect, the 2015 Holdings Acquisition was accounted for by the Partnership on an “as if pooled” basis for the periods during which common control existed which began on August 4, 2014. See Note 2. The accompanying unaudited condensed consolidated financial statements were prepared in conformity with GAAP, which requires management to make various estimates and assumptions that may affect the amounts of assets and liabilities, disclosures of contingent assets and liabilities at the date of the condensed consolidated financial statements and the reported amounts of revenues and expenses during the period. Actual results may differ from those estimates. Information for interim periods may not be indicative of our operating results for the entire year. The disclosures included in this report provide an update to our 2015 Annual Report on Form 10-K. We evaluate events that occur after the balance sheet date, but before the financial statements are issued, for potential recognition or disclosure. Based on the evaluation, we determined that there were no material subsequent events for recognition or disclosure other than those disclosed in this report. Significant Accounting Policies During the second quarter of 2016 , there were no material changes to our significant accounting policies described in Note 1 of our 2015 Annual Report on Form 10-K. Recent Accounting Pronouncements Accounting standard-setting organizations frequently issue new or revised accounting pronouncements. We review and evaluate new pronouncements and existing pronouncements below to determine their impact, if any, on our consolidated financial statements. We are evaluating the impact of each pronouncement on our consolidated financial statements. In February 2015, the Financial Accounting Standards Board (“FASB”) issued a pronouncement that amended the current consolidation guidance with regard to variable interest entities and voting interest entities. The standard became effective in 2016 and amends the guidance and framework for determining whether a partial-interest owner in a subsidiary should consolidate and potentially revise their disclosures regarding the topic. We adopted this standard in 2016. In February 2016, the FASB issued a pronouncement amending disclosure and presentation requirements for lessees and lessors to reflect more accurately the recognition of assets and liabilities that arise from leases. The pronouncement states that a lessee should recognize a liability to make lease payments and a right-of-use asset representing its right to use the underlying asset for the lease term on the face of the balance sheet. When measuring assets and liabilities arising from a lease, a lessee (and a lessor) should include payments to be made in optional periods only if the lessee is reasonably certain to exercise an option to extend the lease or not to exercise an option to terminate the lease. Similarly, optional payments to purchase the underlying asset should be included in the measurement of lease assets and lease liabilities only if the lessee is reasonably certain to exercise that purchase option. In addition, also consistent with the previous leases guidance, a lessee (and a lessor) should exclude most variable lease payments in measuring lease assets and lease liabilities, other than those that depend on an index or a rate or are in substance fixed payments. This standard will become effective beginning in 2019. In March 2016, the FASB issued a pronouncement amending the accounting for share-based payment transactions, including the income tax consequences, classification of awards as either equity or liabilities and classification on the statement of cash flows. This standard will become effective beginning in 2017. In March 2016, the FASB issued a pronouncement amending the requirement to adopt retroactively the equity method of accounting. The pronouncement eliminates the requirement that when an investment qualifies for use of the equity method as a result of an increase in the level of ownership interest or degree of influence, an investor must adjust the investment, results of operations, and retained earnings retroactively on a step-by-step basis as if the equity method had been in effect during all previous periods that the investment had been held. The new guidance requires that the equity method investor add the cost of acquiring the additional interest in the investee to the current basis of the investor’s previously held interest and adopt the equity method of accounting as of the date the investment becomes qualified for equity method accounting. Therefore, upon qualifying for the equity method of accounting, no retroactive adjustment of the investment is required. In addition, the pronouncement requires that an entity that has an available-for sale equity security that becomes qualified for the equity method of accounting recognize through earnings the unrealized holding gain or loss in accumulated other comprehensive income at the date the investment becomes qualified for use of the equity method. This standard will become effective beginning in 2017. In 2014, a comprehensive new revenue recognition standard that will supersede substantially all existing revenue recognition guidance under GAAP was issued. The standard's core principle is that a company will recognize revenue when it transfers promised goods or services to customers and in an amount that reflects the consideration to which the company expects to be entitled in exchange for those goods or services. In April 2016, the FASB issued an accounting pronouncement which updates the identifying performance obligations and licensing implementation guidance. The standard will become effective beginning in 2018. In May 2016, the FASB issued a pronouncement for the new revenue recognition guidance on assessing collectability, presentation of sales taxes, non-cash consideration, completed contracts and contract modifications. The pronouncement is intended to reduce the potential for diversity in practice at initial application and cost and complexity on an ongoing basis. The standard will become effective beginning in 2018.

ACQUISITION

ACQUISITION	6 Months Ended
	Jun. 30, 2016
Business Combinations [Abstract]
Acquisition	ACQUISITIONS Holdings Drop-Down Acquisition. On May 7, 2015, we completed the acquisition of gathering, treating, compression and transportation assets (the “2015 Holdings Acquisition”) consisting of the Valley Wells sour gas gathering and treating system (the "Valley Wells System"), compression assets that are part of the Valley Wells and Lancaster gathering and treating systems (the "Compression Assets") and two NGL pipelines pursuant to a Purchase, Sale and Contribution Agreement among Holdings, TexStar Midstream Utility, LP, Frio LaSalle Pipeline, LP (“Frio”), us and certain of our subsidiaries. Total consideration for the assets was $77.6 million , consisting of $15.0 million in cash and 4.5 million new common units, valued as of the date of closing and issued to Holdings. We also assumed the remaining capital expenditures for the completion of the NGL pipelines that were under construction. The 2015 Holdings Acquisition was deemed a transaction between entities under common control and, as such, was accounted for on an “as if pooled” basis for all periods which common control existed (which began on August 4, 2014). The Partnership’s financial results retrospectively include the financial results of the Valley Wells System and Compression Assets for all periods ending after August 4, 2014, the date of the Holdings Transaction, and before May 7, 2015. The acquired NGL pipelines were accounted for as an asset acquisition and were included in the historical financial statements beginning on May 7, 2015. As a carve-out transaction, the 2015 Holdings Acquisition had no cash accounts. As such, accounts receivable and accounts payable, along with certain other assets and liabilities that would be settled in cash, were the rights and obligations of Holdings as of December 31, 2014. Given their nature and the fact that carve-out financial statements are meant to represent an entity’s operations as if it had existed as of the time common control occurred, we have presented these amounts as third-party receivables and payables. The amount of the consideration paid below Holdings’ net book value of the assets received and liabilities assumed of the 2015 Holdings Acquisition was recorded as an increase to partners’ capital as summarized as follows (in thousands): Consideration paid (1) $ 77,640 Total net assets contributed 107,356 Net assets contributed in excess of consideration paid $ 29,716 Allocation of increase to partners' capital: Common limited partner interest $ 14,806 Class B Convertible limited partner interest 7,929 Subordinated limited partner interest 6,387 General Partner interest 594 Total increase to partners' capital $ 29,716 (1) This amount was calculated as follows: $15.0 million of cash plus 4.5 million new common units at an issue price of $13.92 , the closing price of the Partnership’s common units on May 7, 2015. Supplemental Disclosures - As If Pooled Basis. As noted above, the 2015 Holdings Acquisition was between commonly controlled entities which required that we account for the acquisitions in a manner similar to a pooling of interests. As a result, the historical financial statements of the Partnership and the Valley Wells System and Compression Assets have been combined to reflect the historical operations, financial position and cash flows from the date common control began on August 4, 2014 . Revenues and net income for the previously separate entities and the combined amounts for the three and six months ended June 30, 2015, are as follows (in thousands): Three Months Ended June 30, 2015 Six Months Ended June 30, 2015 Partnership revenues $ 165,560 $ 346,109 Valley Wells System and Compression Assets revenue 1,660 7,049 Combined revenues $ 167,220 $ 353,158 Partnership net loss $ (14,348 ) $ (25,098 ) Valley Wells System and Compression Assets net loss (1,103 ) (4,258 ) Combined net loss $ (15,451 ) $ (29,356 )

NET (LOSS) INCOME PER LIMITED P

NET (LOSS) INCOME PER LIMITED PARTNER UNIT AND DISTRIBUTIONS	6 Months Ended
	Jun. 30, 2016
Earnings Per Share [Abstract]
NET LOSS PER LIMITED PARTNER UNIT AND DISTRIBUTIONS	NET LOSS PER LIMITED PARTNER UNIT AND DISTRIBUTIONS Net Loss Per Limited Partner Unit The following is a reconciliation of net loss attributable to limited partners and the limited partner units used in the basic and diluted earnings per unit calculations for the three and six months ended June 30, 2016 and 2015 (in thousands, except unit and per unit data): Three Months Ended June 30, Six Months Ended June 30, 2016 2015 2016 2015 Net loss $ (7,396 ) $ (15,451 ) $ (22,915 ) $ (29,356 ) General partner unit in-kind distribution (26 ) (61 ) (26 ) (137 ) Net loss attributable to Holdings — (1,103 ) — (4,258 ) Net loss attributable to partners $ (7,422 ) $ (14,409 ) $ (22,941 ) $ (25,235 ) General partner's interest (1) $ (156 ) $ (306 ) $ (465 ) $ (561 ) Class B Convertible limited partner interest (1) (1,890 ) (3,981 ) (6,081 ) (7,100 ) Limited partners' interest (1) Common $ (3,953 ) $ (6,928 ) $ (11,782 ) $ (11,830 ) Subordinated (1,423 ) (3,194 ) (4,613 ) (5,744 ) (1) General Partner's and limited partners’ interests are calculated based on the allocation of net losses for the period, net of the General Partner unit in-kind distributions. The Class B convertible unit (“Class B Convertible Units”) interest is calculated based on the allocation of only net losses for the period. Three Months Ended June 30, Six Months Ended June 30, Common Units 2016 2015 2016 2015 Interest in net loss $ (3,953 ) $ (6,928 ) $ (11,782 ) $ (11,830 ) Effect of dilutive units - numerator (1) — — — — Dilutive interest in net loss $ (3,953 ) $ (6,928 ) $ (11,782 ) $ (11,830 ) Weighted-average units - basic 33,920,732 26,476,520 31,183,306 25,143,455 Effect of dilutive units - denominator (1) — — — — Weighted-average units - dilutive 33,920,732 26,476,520 31,183,306 25,143,455 Basic and diluted net loss per common unit $ (0.12 ) $ (0.26 ) $ (0.38 ) $ (0.47 ) Three Months Ended June 30, Six Months Ended June 30, Subordinated Units 2016 2015 2016 2015 Interest in net loss $ (1,423 ) $ (3,194 ) $ (4,613 ) $ (5,744 ) Effect of dilutive units - numerator (1) — — — — Dilutive interest in net loss $ (1,423 ) $ (3,194 ) $ (4,613 ) $ (5,744 ) Weighted-average units - basic 12,213,713 12,213,713 12,213,713 12,213,713 Effect of dilutive units - denominator (1) — — — — Weighted-average units - dilutive 12,213,713 12,213,713 12,213,713 12,213,713 Basic and diluted net loss per subordinated unit $ (0.12 ) $ (0.26 ) $ (0.38 ) $ (0.47 ) (1) Because we had a net loss for all periods for common units and the subordinated units, the effect of the dilutive units would be anti-dilutive to the per unit calculation. Therefore, the weighted average units outstanding are the same for basic and dilutive net loss per unit for those periods. The weighted average units that were not included in the computation of diluted per unit amounts was 55,202 and 7,074 for the three and six months ended June 30, 2016, respectively. Our calculation of the number of weighted-average units outstanding includes the common units that have been awarded to our directors that are deferred under our Non-Employee Director Deferred Compensation Plan. Distributions Our agreement of limited partnership (as amended and restated, the “Partnership Agreement”), requires that within 45 days after the end of each quarter, we distribute all of our available cash to unitholders of record on the applicable record date, as determined by our General Partner. There is no guarantee that we will pay the minimum quarterly distribution on our units in any quarter. Beginning with the third quarter of 2014, until such time that we have a distributable cash flow divided by cash distributions ratio (“Distributable Cash Flow Ratio”) of at least 1.0 , Holdings, the indirect holder of all of our subordinated units, waived the right to receive distributions on any subordinated units that would cause the Distributable Cash Flow Ratio to be less than 1.0 . In addition, the Credit Agreement Amendment (as defined in Note 6) imposed additional restrictions on our ability to declare and pay quarterly cash distributions with respect to our subordinated units. See Note 6. Cash Distributions The board of directors of our General Partner voted not to pay a quarterly distribution with respect to the fourth quarter of 2015 and the first and second quarters of 2016 and instead, based on current conditions, to reserve any excess cash for the operation of our business. The board of directors of our General Partner and our management believe this suspension to be in the best interest of our unitholders. The board of directors and management will continue to evaluate the Partnership's ability to reinstate the distribution in future periods. See Note 1. Holdings did not receive a distribution for the first quarter of 2015 in respect of the 4.5 million common units acquired by it in connection with the 2015 Holdings Acquisition. Paid In-Kind Distributions Class B Convertible Units. As of June 30, 2016 , the Class B Convertible Units consisted of 16,522,484 of such units including the additional Class B Convertible Units issued in-kind as a distribution (“Class B PIK Units”). The Class B Convertible Units are not participating securities for purposes of the earnings per unit calculation. Commencing with the quarter ended September 30, 2014 and until converted, as long as certain requirements are met, the holders of the Class B Convertible Units will receive quarterly distributions in an amount equal to $0.3257 per unit. These distributions will be paid quarterly in Class B PIK Units within 45 days after the end of each quarter. Our General Partner was entitled, and has exercised its right, to retain its 2.0% general partner interest in us in connection with the original issuance of the Class B Convertible Units. In connection with future distributions of Class B PIK Units, the General Partner is entitled to a corresponding distribution to maintain its 2.0% general partner interest in us. The Class B Convertible Units have the same rights, preferences and privileges, and are subject to the same duties and obligations, as our common units, with certain exceptions. See Note 8. The following table presents the PIK distributions issued on the Class B Convertible Units during 2016 (in thousands, except per unit and in-kind distribution units): Payment Date Attributable to the Quarter Ended Per Unit Distribution In-Kind Class B Convertible Unit In-Kind Class B Convertible Distributions (1) In-Kind Unit to General Partner In-Kind General Partner Distribution Value (1) 2016 August 9, 2016 June 30, 2016 $ 0.3257 289,165 $ 581 5,901 $ 12 May 9, 2016 (2) 0.3257 563,494 1,293 11,499 26 (1) The fair value was calculated as required, based on the common unit price at the quarter end date for the period attributable to the distribution, multiplied by the number of units distributed. (2) We suspended distributions to holders of our Class B Convertible Units for the quarters ended December 31, 2015 and March 31, 2016. However, under the terms of our Partnership agreement, such paid in-kind (“PIK”) distributions continued to accumulate. On May 9, 2016, we issued the accumulated Class B Convertible Units to Holdings and general partner units to our General Partner related to the quarters ended December 31, 2015 and March 31, 2016.

FINANCIAL INSTRUMENTS

FINANCIAL INSTRUMENTS	6 Months Ended
	Jun. 30, 2016
Investments, All Other Investments [Abstract]
FINANCIAL INSTRUMENTS	FINANCIAL INSTRUMENTS Fair Value Measurements We apply recurring fair value measurements to our financial assets and liabilities. In estimating fair value, we generally use a market approach and incorporate assumptions that market participants would use in pricing the asset or liability, including assumptions about risk and/or the risks inherent in the inputs to the valuation techniques. The fair value measurement inputs we use vary from readily observable inputs that represent market data obtained from independent sources to unobservable inputs that reflect our own market assumptions that cannot be validated through external pricing sources. Based on the observability of the inputs used in the valuation techniques, the financial assets and liabilities carried at fair value in the financial statements are classified as follows: • Level 1—Represents unadjusted quoted market prices in active markets for identical assets or liabilities that are accessible at the measurement date. This category primarily includes our cash and cash equivalents, accounts receivable and accounts payable. • Level 2—Represents quoted market prices for similar assets or liabilities in active markets, quoted market prices in markets that are not active or other inputs that are observable or can be corroborated by observable market data. This category primarily includes variable rate debt, over-the-counter swap contracts based upon natural gas price indices and interest rate derivative transactions. • Level 3—Represents derivative instruments whose fair value is estimated based on internally developed models and methodologies utilizing significant inputs that are generally less readily observable from market sources. We do not have financial assets and liabilities classified as Level 3. In certain cases, the inputs used to measure fair value may fall into different levels of the fair value hierarchy. In such cases, the level in the fair value hierarchy must be determined based on the lowest level input that is significant to the fair value measurement. An assessment of the significance of a particular input to the fair value measurement in its entirety requires judgment and consideration of factors specific to the asset or liability. The carrying amounts of cash and cash equivalents, accounts receivable and accounts payable represent fair values based on the short-term nature of these instruments. The fair value of the debt funded through our credit facilities approximates its carrying amount due primarily to the variable nature of the interest rate of the instrument and is considered a Level 2 fair value measurement. Derivative Financial Instruments Interest Rate Derivative Transactions We enter into interest rate swap contracts whereby we receive a floating rate and pay a fixed rate to reduce the risk associated with the variability of interest rates for our term loan borrowings. Our interest rate swap position was as follows (in thousands): Estimated Fair Value Notional Amount Fixed Rate Effective Date Maturity Date June 30, 2016 $ 100,000 1.195 % June 30, 2015 January 1, 2017 $ (104 ) Effectively, we enter into interest rate cap contracts to limit our London Interbank Offered Rate (“LIBOR”)-based interest rate risk on the portion of debt hedged at the contracted cap rate. Our interest rate cap position was as follows (in thousands): Estimated Fair Value Notional Amount Cap Rate Effective Date Maturity Date June 30, 2016 $ 20,000 1.500 % December 31, 2014 December 31, 2016 $ — 80,000 3.000 % June 30, 2015 June 30, 2017 — 50,000 3.000 % December 31, 2015 December 31, 2017 — 50,000 3.000 % June 30, 2016 June 30, 2018 1 $ 1 In June 2016, we entered into an interest rate cap contract for $50.0 million notional value, effective June 30, 2016, with a maturity date of June 30, 2018. The contract effectively caps our LIBOR-based interest rate on that portion of debt at 3.0% . These interest rate derivatives are not designated as cash flow hedging instruments for accounting purposes and as a result, changes in the fair value are recognized in interest expense immediately. The fair value of our interest rate derivative transactions is determined based on a discounted cash flow method using contractual terms of the transactions. The floating coupon rate is based on observable rates consistent with the frequency of the interest cash flows. We have elected to present our interest rate derivatives net in the balance sheets. There was no effect of offsetting in the balance sheets as of June 30, 2016 or December 31, 2015 . The fair values of our interest rate derivative transactions were as follows (in thousands): Significant Other Observable Inputs (Level 2) Fair Value Measurement as of June 30, 2016 December 31, 2015 Current interest rate derivative assets $ — $ 6 Non-current interest rate derivative assets — 4 Current interest rate derivative (liabilities) (104 ) (169 ) Total interest rate derivatives $ (104 ) $ (159 ) The realized and unrealized amounts recognized in interest expense associated with derivatives were as follows (in thousands): Three Months Ended June 30, Six Months Ended June 30, 2016 2015 2016 2015 Unrealized loss (gain) on interest rate derivatives $ (85 ) $ 54 $ (55 ) $ 109 Realized loss on interest rate derivatives 99 154 198 258 Commodity Swaps In our normal course of business, periodically we enter into month-ahead swap contracts to hedge our exposure to certain intra-month natural gas index pricing risk. We had no outstanding month-ahead swap contracts as of June 30, 2016 and December 31, 2015 . We define these contracts as Level 2 because the index price associated with such contracts is observable and tied to a similarly quoted first-of-the-month natural gas index price. The realized and unrealized gain/loss on these derivatives, recognized in revenues in our statements of operations, were as follows (in thousands): Three Months Ended June 30, Six Months Ended June 30, 2016 2015 2016 2015 Realized gain on commodity swap derivatives $ — $ 125 $ — $ 136 Unrealized loss on commodity swap derivatives — — — (112 )

LONG-LIVED ASSETS

LONG-LIVED ASSETS	6 Months Ended
	Jun. 30, 2016
Property, Plant and Equipment [Abstract]
LONG-LIVED ASSETS	LONG-LIVED ASSETS Property, Plant and Equipment Property, plant and equipment consisted of the following (in thousands): Estimated Useful Life (yrs) June 30, 2016 December 31, 2015 Pipelines 15-30 $ 552,197 $ 542,790 Gas processing, treating and other plants 15 556,917 547,253 Compressors 7-15 76,661 72,750 Rights of way and easements 15 50,160 46,692 Furniture, fixtures and equipment 5 9,320 9,252 Capital lease vehicles 3-5 2,442 2,442 Total property, plant and equipment 1,247,697 1,221,179 Accumulated depreciation and amortization (249,944 ) (212,991 ) Total 997,753 1,008,188 Construction in progress 12,798 32,214 Land and other 23,715 25,599 Property, plant and equipment, net $ 1,034,266 $ 1,066,001 Depreciation is provided using the straight-line method based on the estimated useful life of each asset. In May 2016, we finalized the sale of a portion of pipeline for $15.0 million , which was determined to be a sale of assets. We recorded a $13.6 million gain on sale of assets on our condensed consolidated statement of operations in connection with this sale. Intangible Assets Intangible assets of $1.4 million and $1.5 million as of June 30, 2016 and December 31, 2015 , respectively, represent the unamortized value assigned to long-term supply and gathering contracts. These intangible assets are amortized on a straight-line basis over the 30 -year expected useful lives of the contracts through 2041. Amortization expense over the next five years related to intangible assets is not significant.

LONG-TERM DEBT

LONG-TERM DEBT	6 Months Ended
	Jun. 30, 2016
Debt Disclosure [Abstract]
LONG-TERM DEBT	LONG-TERM DEBT Our outstanding debt and related information at June 30, 2016 and December 31, 2015 are as follows (in thousands): June 30, 2016 December 31, 2015 Revolving credit facility due 2019 $ 130,555 $ 181,695 Term loans (including original issue discount of $1.6 million and $1.8 million as of June 30, 2016 and December 31, 2015, respectively) due 2021 439,378 441,464 Total long-term debt (including current portion) 569,933 623,159 Current portion of long-term debt (4,500 ) (4,500 ) Deferred financing costs (12,748 ) (14,141 ) Total long-term debt $ 552,685 $ 604,518 Outstanding letters of credit $ 16,378 $ 18,305 Remaining unused borrowings $ 53,067 $ — Three Months Ended June 30, Six Months Ended June 30, 2016 2015 2016 2015 Weighted average interest rate 5.24 % 5.15 % 5.23 % 5.13 % Average outstanding borrowings $ 608,382 $ 276,441 $ 617,368 $ 265,537 Maximum borrowings $ 626,680 $ 563,625 $ 628,055 $ 563,625 Senior Credit Facilities Our long-term debt arrangements consist of (a) the Third A&R Revolving Credit Agreement (as defined in Note 1) and (b) a Term Loan Credit Agreement with Wilmington Trust, National Association, UBS Securities LLC and Barclays Bank PLC and a syndicate of lenders (the “Term Loan Agreement” and, together with the Third A&R Revolving Credit Agreement, the “Senior Credit Facilities”). Substantially all of our assets are pledged as collateral under the Senior Credit Facilities, with the security interest of the facilities ranking pari passu. Third A&R Revolving Credit Agreement The Third A&R Revolving Credit Agreement is a five -year $200 million revolving credit facility (the “Credit Facility”). Borrowings under our Credit Facility bear interest at LIBOR plus an applicable margin or a base rate as defined in the respective credit agreement. Pursuant to the Third A&R Revolving Credit Agreement, among other things: (a) the letters of credit sublimit is $75 million ; and (b) if we fail to comply with the consolidated total leverage ratio, consolidated senior secured leverage ratio and the consolidated interest coverage ratio covenants (the “Financial Covenants”) (a “Financial Covenant Default”), we have the right (a limited number of times) to cure such Financial Covenant Default by having the Sponsors purchase equity interests in or make capital contributions to us resulting in, among other things, proceeds that, if added to consolidated EBITDA, as defined in the Third A&R Revolving Credit Agreement, would result in us satisfying the Financial Covenants. On May 7, 2015, we entered into the First Amendment to our Third A&R Revolving Credit Agreement among the Partnership, as the borrower, the lenders and other parties thereto (the “Credit Agreement Amendment”). The Credit Agreement Amendment, among other things: (a) (i) revised the maximum consolidated total leverage ratio set at 5.5 to 1.0 as of the last day of the fiscal quarter ending each of December 31, 2015, March 31, 2016 and June 30, 2016, (ii) 5.25 to 1.0 as of the last day of the fiscal quarter ending September 30, 2016, and (iv) 5.00 to 1.0 as of the last day of each fiscal quarter thereafter, in each case, without any step-ups in connection with acquisitions; (b) increased the applicable margins used in connection with the loans and the commitment fee so that the applicable margin for Eurodollar Loans (as used in the Third A&R Revolving Credit Agreement) ranges from 2.00% to 4.50% , the applicable margin for base rate loans ranges from 1.00% to 3.50% and the applicable rate for commitment fees ranges from 0.375% to 0.500% ; and (c) allows us an unlimited number of quarterly equity cures related to our Financial Covenant Default through the fourth quarter of 2016, and no more than two in a twelve month period thereafter for the life of the agreement. Term Loan Agreement The Term Loan Agreement is a seven-year $450 million senior secured term loan facility. Borrowings under our Term Loan Agreement bear interest at LIBOR plus 4.25% or a base rate as defined in the respective credit agreement with a LIBOR floor of 1.00% . The facility is amortized in equal quarterly installments in an aggregate annual amount equal to 1% of the original principal amount of the initial loan ( $1.125 million ), with the remainder due on the maturity date. Deferred Financing Costs Deferred financing costs are capitalized and amortized as interest expense under the effective interest method over the term of the related debt. The unamortized balance of deferred financing costs is included in long-term debt on the balance sheets. Changes in deferred financing costs are as follows (in thousands): 2016 2015 Deferred financing costs, January 1 $ 14,141 $ 16,602 Capitalization of deferred financing costs 130 597 Less: Amortization of deferred financing costs (1,523 ) (1,557 ) Deferred financing costs, June 30 $ 12,748 $ 15,642

COMMITMENTS AND CONTINGENCIES

COMMITMENTS AND CONTINGENCIES	6 Months Ended
	Jun. 30, 2016
Commitments and Contingencies Disclosure [Abstract]
COMMITMENTS AND CONTINGENCIES	COMMITMENTS AND CONTINGENCIES Legal Matters From time to time, we are party to certain legal or administrative proceedings that arise in the ordinary course and are incidental to our business. For example, during periods when we are expanding our operations through the development of new pipelines or the construction of new plants, we may become involved in disputes with landowners that are in close proximity to our activities. While we are currently involved in several such proceedings and disputes, our management believes that none of such proceedings or disputes will have a material adverse effect on our results of operations, cash flows or financial condition. However, future events or circumstances, currently unknown to management, will determine whether the resolution of any litigation or claims ultimately will have a material effect on our results of operations, cash flows or financial condition in any future reporting periods. Formosa. In March 2013, one of our subsidiaries, Southcross Marketing Company Ltd. (“Marketing”), filed suit against Formosa Hydrocarbons Company, Inc. (“Formosa”) for breach of contract under a gas processing and sales contract between the parties. Formosa filed a counterclaim against Marketing for breach of such contract and a related agreement between the parties. After a bench trial held in January 2015, the judge ruled that Formosa had breached certain of its obligations under the gas processing and sales contract and that Marketing had breached certain of its obligations under such contract and the related agreement. On June 27, 2016, a final judgment was entered in which we were awarded for damages, attorneys’ fees and interest. Both parties filed a request for findings of fact and conclusions of law on July 15, 2016. On July 27, 2016, Marketing filed a notice of appeal seeking to appeal certain of the rulings set forth in the final judgment while, concurrently, Formosa filed a motion to modify the final judgment with respect to certain of the rulings in the final judgment and, alternatively, a motion for new trial. The payment of any award will be deferred until the resolution of Marketing’s notice of appeal and Formosa’s motions. Regulatory Compliance In the ordinary course of our business, we are subject to various laws and regulations. In the opinion of our management, compliance with current laws and regulations will not have a material effect on our results of operations, cash flows or financial condition. Leases Capital Leases We have auto leases that are classified as capital leases. The termination dates of the lease agreements vary from 2016 to 2019. We recorded amortization expense related to the capital leases of $0.1 million and $0.2 million for the three and six months ended June 30, 2016 and $0.1 million and $0.3 million for the three and six months ended June 30, 2015 . Capital leases entered into during the three and six months ended June 30, 2016 were $0.2 million and $0.2 million , respectively. Capital leases entered into during the three and six months ended June 30, 2015 were $0.2 million and $0.4 million , respectively. The capital lease obligation amounts included on the balance sheets were as follows (in thousands): June 30, 2016 December 31, 2015 Other current liabilities $ 376 $ 362 Other non-current liabilities 304 522 Total $ 680 $ 884 Operating Leases We maintain operating leases in the ordinary course of our business activities. These leases include those for office and other operating facilities and equipment. The termination dates of the lease agreements vary from 2016 to 2025. Expenses associated with operating leases, recorded in operations and maintenance expenses and general and administrative expenses in our statements of operations, were $1.8 million and $2.7 million for the three and six months ended June 30, 2016 , respectively, and $0.6 million and $1.7 million for the three and six months ended June 30, 2015 , respectively. A rental reimbursement included in our lease agreement associated with the office space we leased in June 2015 of $2.1 million , net of amortization, has been recorded as a deferred liability on our condensed consolidated balance sheets as of June 30, 2016. This amount will continue to be amortized against the lease payments over the length of the lease term. Purchase Commitments At June 30, 2016 , we had commitments of $7.4 million related primarily to the purchase of pipelines and compressors for our various capital expansion projects. We have other planned capital projects that are discretionary in nature, with no substantial contractual capital commitments made in advance of the actual expenditures.

TRANSACTIONS WITH RELATED PARTI

TRANSACTIONS WITH RELATED PARTIES	6 Months Ended
	Jun. 30, 2016
Related Party Transactions [Abstract]
TRANSACTIONS WITH RELATED PARTIES	TRANSACTIONS WITH RELATED PARTIES Affiliated Directors Effective April 13, 2016, the board of directors of our General Partner includes one director affiliated with EIG, one director affiliated with Tailwater and four outside directors. Pursuant to the terms of the POR, the Lenders have the right to appoint two additional directors (one of which must be independent). The eighth member of the board of directors of our General Partner, and its chairman, is David W. Biegler. Mr. Biegler will serve as chairman until the earlier of August 4, 2016, his death or resignation. Our non-employee directors are reimbursed for certain expenses incurred for their services to us. The director services fees and expenses are included in general and administrative expenses in our statements of operations. We incurred fees and expenses related to the services from our affiliated directors as follows (in thousands): Three Months Ended June 30, Six Months Ended June 30, 2016 2015 2016 2015 Charlesbank Capital Partners, LLC(1) $ 30 $ 42 $ 94 $ 80 EIG 16 17 45 33 Tailwater 18 17 44 33 Total fees and expenses paid for director services to affiliated entities $ 64 $ 76 $ 183 $ 146 (1) Charlesbank Capital Partners, LLC indirectly owned approximately one-third of Holdings until April 13, 2016. See Note 1. Southcross Energy Partners GP, LLC (our General Partner) Our General Partner does not receive a management fee or other compensation for its management of us. However, our General Partner and its affiliates are entitled to reimbursements for all expenses incurred on our behalf, including, among other items, compensation expense for all employees required to manage and operate our business. We incurred expenses related to these reimbursements as follows (in thousands): Three Months Ended June 30, Six Months Ended June 30, 2016 2015 2016 2015 Reimbursements included in general and administrative expenses $ 3,538 $ 3,845 $ 7,034 $ 7,080 Reimbursements included in operations and maintenance expenses 5,548 5,133 10,846 10,432 Total reimbursements to our General Partner and its affiliates $ 9,086 $ 8,978 $ 17,880 $ 17,512 Compensation expense for services incurred by us on behalf of Southcross Energy LLC was billed to Southcross Energy LLC for the three and six months ended June 30, 2015. Compensation expense not incurred on our behalf of $0.2 million and $0.4 million for the three and six months ended June 30, 2015, respectively, was billed to Southcross Energy LLC. Other Transactions with Affiliates On March 17, 2016, our General Partner entered into retention agreements with certain executives of our General Partner, pursuant to which the executives received a one-time special restructuring bonus in an amount equal to 100% of then-current annual salary for remaining employed with our General Partner through the date of Holdings’ emergence from bankruptcy. The bonuses of $1.5 million were paid on April 22, 2016 and were allocated 100% to Holdings. In addition, each of these executives of our General Partner will receive a one-time retention bonus in an amount equal to 100% of then-current annual salary if the executive remains continuously employed with our General Partner through November 1, 2016. We have recorded $0.3 million and $0.6 million in general and administrative expenses for our allocable share of costs for the three and six months ended June 30, 2016 . On January 7, 2016, in response to our need for additional liquidity, we issued at par senior unsecured PIK notes in the aggregate principal amount of $14.0 million (the "PIK Notes") to affiliates of EIG and Tailwater, with interest at a rate of 7% due January 7, 2017. Contemporaneous with the resolution of Holdings’ bankruptcy proceedings in April 2016, the PIK Notes and the related PIK interest of $0.3 million were repaid in full. We have a gas gathering and processing agreement (the “G&P Agreement”) and an NGL sales agreement (the “NGL Agreement”) with an affiliate of Holdings. Under the terms of these commercial agreements, we transport, process and sell rich natural gas for the affiliate of Holdings in return for agreed-upon fixed fees, and we can sell natural gas liquids that we own to Holdings at agreed-upon fixed prices. The NGL Agreement also permits us to utilize Holdings’ fractionation services at market-based rates. In conjunction with the 2015 Holdings Acquisition, we entered into a series of commercial agreements with affiliates of Holdings including a gas gathering and treating agreement, a compression services agreement, a repair and maintenance agreement and an NGL transportation agreement. Under the terms of these commercial agreements, we gather, treat, transport, compress and redeliver natural gas for the affiliates of Holdings in return for agreed-upon fixed fees. In addition, under the NGL transportation agreement, we transport a minimum volume of NGLs per day at a fixed rate per gallon. The operational expense associated with such agreements has been capped at $1.7 million per quarter. In the first and second quarter of 2016, we exceeded this cap by $1.0 million and $1.4 million , respectively. As of June 30, 2016, accounts receivable - affiliates in our condensed consolidated balance sheets included $1.4 million related to this operational expense cap. The Partnership recorded revenues from affiliates of $24.6 million and $48.8 million for the three and six months ended June 30, 2016 , respectively, and $21.1 million and $28.5 million for the three and six months ended June 30, 2015 , respectively, in accordance with the G&P Agreement, the NGL Agreement and the commercial agreements entered into in connection with the 2015 Holdings Acquisition. We had accounts receivable due from affiliates of $16.3 million (includes the equity cure of $0.5 million due from Holdings related to the first quarter of 2016 that was paid in July 2016) and $49.7 million as of June 30, 2016 and December 31, 2015 , respectively, and accounts payable due to affiliates of $7.3 million and $7.9 million as of June 30, 2016 and December 31, 2015 , respectively. The affiliate receivable and payable balances are related primarily to transactions associated with Holdings, noted above, and our joint venture investments (defined in Note 12). The receivable balance due from Holdings is current as of June 30, 2016 .

PARTNERS' CAPITAL

PARTNERS' CAPITAL	6 Months Ended
	Jun. 30, 2016
Partners' Capital Notes [Abstract]
PARTNERS' CAPITAL	PARTNERS’ CAPITAL Ownership Our units outstanding as of June 30, 2016 are as follows (in units): Partners’ Capital Owned by Parent Public Holdings Class B General Common Common Convertible Subordinated Partner Units outstanding as of December 31, 2015 21,804,219 6,616,400 15,958,990 12,213,713 1,154,965 Vesting of LTIP units, net 92,685 — — — — In-kind distributions and issuances to general partner to maintain 2.0% ownership — — 563,494 — 184,600 Common unit issuances to Holdings related to equity cures — 8,389,188 — — — Units outstanding as of June 30, 2016 21,896,904 15,005,588 16,522,484 12,213,713 1,339,565 Common Units Our common units represent limited partner interests in us. The holders of our common units are entitled to participate in our distributions and are entitled to exercise the rights and privileges available to limited partners under our Partnership Agreement. In accordance with the requirements of the Equity Cure Agreement, Holdings was issued 8,029,729 common units on May 2, 2016 and 359,459 common units on May 13, 2016. Class B Convertible Units The Class B Convertible Units consist of 14,633,000 units plus any additional Class B PIK Units. The Class B Convertible Units have the same rights, preferences and privileges, and are subject to the same duties and obligations, as our common units, with certain exceptions as noted below. Our Partnership Agreement does not allow additional Class B Convertible Units (other than Class B PIK Units) to be issued without the prior approval of our General Partner and the holders of a majority of the outstanding Class B Convertible Units. As of June 30, 2016 , all of our outstanding Class B Convertible Units were indirectly owned by Holdings. Distribution Rights: The holders of the Class B Convertible Units will receive quarterly distributions in an amount equal to $0.3257 per unit paid in Class B PIK Units (based on a unit issuance price of $18.61 ) within 45 days after the end of each quarter until converted and as long as certain requirements are met. Our General Partner was entitled, and has exercised its right, to retain its 2.0% general partner interest in us in connection with the original issuance of Class B Convertible Units. In connection with future distributions of Class B PIK Units, the General Partner is entitled to a corresponding distribution to maintain its 2.0% general partner interest in us. We suspended distributions to holders of our Class B Convertible Units for the quarters ended December 31, 2015 and March 31, 2016. However, under the terms of our Partnership agreement, such paid in-kind (“PIK”) distributions continued to accumulate. On May 9, 2016, we issued the accumulated 563,494 Class B Convertible Units to Holdings and 11,499 general partner units to our General Partner related to the quarters ended December 31, 2015 and March 31, 2016. Conversion Rights: The Class B Convertible Units are convertible into common units on a one-for-one basis and, once converted, will participate in cash distributions pari passu with all other common units. The conversion of Class B Convertible Units will occur on the date we (a) make a quarterly distribution equal to or greater than $0.44 per common unit, (b) generate Class B Distributable Cash Flow (as defined in our Partnership Agreement) in an amount sufficient to pay the declared distribution on all units for the two quarters immediately preceding the date of conversion (the “measurement period”) and (c) forecast paying a distribution equal to or greater than $0.44 per unit from forecasted Class B Distributable Cash Flow on all outstanding common units for the two quarters immediately following the measurement period. Voting Rights: The Class B Convertible Units generally have the same voting rights as common units, and have one vote for each common unit into which such units are convertible. Subordinated Units Subordinated units represent limited partner interests in us and convert to common units at the end of the Subordination Period (as defined in our Partnership Agreement). The principal difference between our common units and our subordinated units is that in any quarter during the Subordination Period, holders of the subordinated units are not entitled to receive any distribution of available cash until the common units have received the minimum quarterly distribution plus any arrearages in the payment of the minimum quarterly distribution from prior quarters. Subordinated units do not accrue arrearages. Beginning with the third quarter of 2014, until such time we have a Distributable Cash Flow Ratio of at least 1.0 , Holdings, the indirect holder of the subordinated units has waived the right to receive distributions on any subordinated units that would cause the Distributable Cash Flow Ratio to be less than 1.0 . In addition, the Credit Agreement Amendment imposed additional restrictions on our ability to declare and pay quarterly cash distributions with respect to our subordinated units. See Note 6. General Partner Interests As defined by our Partnership Agreement, general partner units are not considered to be units (common or subordinated), but are representative of our general partner’s 2.0% ownership interest in us. Our General Partner has received general partner unit PIK distributions in connection with the Class B Convertible Units. In connection with other equity issuances, our General Partner has made capital contributions in exchange for additional general partner units to maintain its 2.0% ownership interest in us. In connection with the 8,029,729 common units issued to Holdings on May 2, 2016 and the 359,459 common units issued to Holdings on May 13, 2016, we recorded a receivable from our General Partner on our condensed consolidated balance sheets in exchange for 171,209 general partner units to maintain its 2.0% ownership interest in us.

INCENTIVE COMPENSATION

INCENTIVE COMPENSATION	6 Months Ended
	Jun. 30, 2016
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]
INCENTIVE COMPENSATION	INCENTIVE COMPENSATION Unit Based Compensation Long-Term Incentive Plan The 2012 Long-Term Incentive Plan (“LTIP”) provides incentive awards to eligible officers, employees and directors of our General Partner. Awards granted to employees under the LTIP vest over a three -year period in equal annual installments or in the event of a change in control of our General Partner in either a common unit or an amount of cash equal to the fair market value of a common unit at the time of vesting, as determined by management at its discretion. These awards also include distribution equivalent rights that grant the holder the right to receive an amount equal to the cash distributions on common units during the period the award remains outstanding. On November 9, 2015, the holders of a majority of our limited partnership units approved an amendment to the LTIP which increased the number of common units that may be granted as awards by 4,500,000 units. The term of the LTIP was also extended to a period of 10 years following the amendment's adoption. The following table summarizes information regarding awards of units granted under the LTIP: Units Weighted-Average Fair Unvested - December 31, 2015 687,920 $ 15.56 Granted units 47,500 $ 3.56 Forfeited units (32,265 ) $ 17.03 Units recaptured for tax withholdings (41,605 ) $ 12.80 Vested units (92,686 ) $ 13.00 Unvested - June 30, 2016 568,864 $ 14.86 For the six months ended June 30, 2016 , we granted awards under the LTIP with a grant date fair value of $0.2 million which we have classified as equity awards. As of June 30, 2016 , we had total unamortized compensation expense of $5.5 million related to unvested awards. Compensation expense associated with awards granted on March 10, 2015 of 84,423 units was recognized over a one -year vesting period, while compensation expense for the remaining awards is expected to be recognized over the three -year vesting period from each equity award’s grant date. As of June 30, 2016 , we had 5,084,444 units available for issuance under the LTIP. Unit Based Compensation Expense The following table summarizes information regarding recognized compensation expense, which is included in general and administrative and operations and maintenance expense on our statements of operations (in thousands): Three Months Ended June 30, Six Months Ended June 30, 2016 2015 2016 2015 Unit-based compensation $ 725 $ 1,662 $ 1,706 $ 2,475 Employee Savings Plan We have employee savings plans under Sections 401(a) and 401(k) of the Internal Revenue Code of 1986, as amended, whereby employees of our General Partner may contribute a portion of their base compensation to the employee savings plan, subject to limits. We provide a matching contribution each payroll period equal to 100% of each employee’s contribution up to the lesser of 6% of the employee’s eligible compensation or $18,000 annually for the period. The following table summarizes information regarding contributions and the expense recognized for the matching contributions, which is included in general and administrative expense on our statements of operations (in thousands): Three Months Ended June 30, Six Months Ended June 30, 2016 2015 2016 2015 Matching contributions expensed for employee savings plan $ 399 $ 172 $ 608 $ 340

REVENUES

REVENUES	6 Months Ended
	Jun. 30, 2016
Revenues [Abstract]
REVENUES	REVENUES We had revenues consisting of the following categories (in thousands): Three Months Ended June 30, Six Months Ended June 30, 2016 2015 2016 2015 Sales of natural gas $ 53,456 $ 92,518 $ 116,059 $ 205,304 Sales of NGLs and condensate 41,832 39,427 68,022 76,610 Transportation, gathering and processing fees 28,157 33,823 57,292 68,876 Other 1,257 1,452 3,055 2,368 Total revenues $ 124,702 $ 167,220 $ 244,428 $ 353,158

EQUITY IN JOINT VENTURES

EQUITY IN JOINT VENTURES	6 Months Ended
	Jun. 30, 2016
Equity Method Investments and Joint Ventures [Abstract]
EQUITY IN JOINT VENTURES	INVESTMENTS IN JOINT VENTURES We own equity interests in three joint ventures with Targa Pipeline Partners LP as our joint venture partner. T2 Eagle Ford Gathering Company LLC (“T2 Eagle Ford”), T2 LaSalle Gathering Company LLC (“T2 LaSalle”) and T2 EF Cogeneration Holdings LLC (“T2 Cogen”) operate pipelines and a cogeneration facility located in South Texas. We indirectly own a 50% interest in T2 Eagle Ford, a 50% interest in T2 Cogen and a 25% interest in T2 LaSalle. We pay our proportionate share of the joint ventures’ operating costs, excluding depreciation and amortization, through lease capacity payments. As a result, our share of the joint ventures’ losses is related primarily to the joint ventures’ depreciation and amortization. Our maximum exposure to loss related to these these joint ventures includes our equity investment, any additional capital contributions and our share of any operating expenses incurred by the joint ventures. The joint ventures’ summarized financial data from their statements of operations for the three and six months ended June 30, 2016 and 2015 is as follows (in thousands): Three Months Ended June 30, Six Months Ended June 30, 2016 2015 2016 2015 Revenue T2 Eagle Ford $ 1,642 $ 1,215 $ 3,044 $ 2,136 T2 Cogen 1,077 1,187 1,999 2,849 T2 LaSalle 414 450 794 829 Net loss T2 Eagle Ford $ (4,924 ) $ (4,993 ) $ (9,511 ) $ (9,975 ) T2 Cogen (1,424 ) (1,492 ) (2,966 ) (2,853 ) T2 LaSalle (1,468 ) (1,445 ) (2,936 ) (2,965 ) Our equity in losses of joint venture investments is comprised of the following for the three and six months ended June 30, 2016 and 2015 (in thousands): Three Months Ended June 30, Six Months Ended June 30, 2016 2015 2016 2015 T2 Eagle Ford $ (2,462 ) $ (2,496 ) $ (4,755 ) $ (4,988 ) T2 Cogen (709 ) (746 ) (1,479 ) (1,426 ) T2 LaSalle (363 ) (362 ) (729 ) (741 ) Equity in losses of joint venture investments $ (3,534 ) $ (3,604 ) $ (6,963 ) $ (7,155 ) Our investments in joint ventures is comprised of the following as of June 30, 2016 and December 31, 2015 (in thousands): June 30, 2016 December 31, 2015 T2 Eagle Ford $ 106,411 $ 105,755 T2 Cogen 14,872 16,747 T2 LaSalle 17,178 18,024 Investments in joint ventures $ 138,461 $ 140,526

CONCENTRATION OF CREDIT RISK AN

CONCENTRATION OF CREDIT RISK AND TRADE ACCOUNTS RECEIVABLE	6 Months Ended
	Jun. 30, 2016
Risks and Uncertainties [Abstract]
CONCENTRATION OF CREDIT RISK AND TRADE ACCOUNTS RECEIVABLE	CONCENTRATION OF CREDIT RISK Our primary markets are in South Texas, Alabama and Mississippi. We have a concentration of revenues and trade accounts receivable due from customers engaged in the production, trading, distribution and marketing of natural gas and NGL products. These concentrations of customers may affect overall credit risk in that these customers may be affected similarly by changes in economic, regulatory or other factors. We analyze our customers’ historical financial and operational information before extending credit. Our top ten customers for the three and six months ended June 30, 2016 and 2015 represent the following percentages of consolidated revenue: Three Months Ended June 30, Six Months Ended June 30, 2016 2015 2016 2015 Top ten customers 53.2 % 55.8 % 57.7 % 56.8 % The percentage of total consolidated revenue for each customer that exceeded 10% of total revenues for the three and six months ended June 30, 2016 and 2015 was as follows: Three Months Ended June 30, Six Months Ended June 30, 2016 2015 2016 2015 TexStar Midstream(b) 10.3 % (a) 11.4 % (a) Trafigura AG (a) 13.0 % (a) 11.8 % (a) Information is not provided for periods for which the customer or producer was less than 10% of our consolidated revenue. (b) TexStar Midstream is an indirectly wholly-owned subsidiary of Holdings. For the six months ended June 30, 2016 and 2015 , we did not experience significant non-payment for services. As of June 30, 2016 and December 31, 2015 , we had an allowance for uncollectible accounts receivable of $0.1 million .

SUBSEQUENT EVENTS

SUBSEQUENT EVENTS	6 Months Ended
	Jun. 30, 2016
Subsequent Events [Abstract]
SUBSEQUENT EVENTS	SUBSEQUENT EVENTS On July 25, 2016, we determined Holdings’ cash contribution to us for the first quarter 2016 equity cure had not been transferred to us timely, as required under the Third A&R Revolving Credit Agreement due to an oversight, which resulted in a default. We advised the lenders under the Third A&R Revolving Credit Agreement, and on July 26, 2016, Holdings fully funded the first quarter 2016 equity cure. On August 4, 2016, we entered into the Limited Waiver and Second Amendment to the Third A&R Revolving Credit Agreement whereby the lenders waived any default or right to exercise any remedy as a result of this technical event of default to fund timely the first quarter 2016 equity cure.

SUPPLEMENTAL INFORMATION

SUPPLEMENTAL INFORMATION	6 Months Ended
	Jun. 30, 2016
Supplemental Cash Flow Elements [Abstract]
SUPPLEMENTAL INFORMATION	SUPPLEMENTAL INFORMATION Supplemental Cash Flow Information (in thousands) Six Months Ended June 30, 2016 2015 Supplemental Disclosures: Cash paid for interest, net of amounts capitalized $ 18,162 $ 14,221 Cash received for tax refunds 53 58 Supplemental disclosures of non-cash investing and financing activities: Accounts payable related to capital expenditures 2,796 9,615 Capital lease obligations — 342 Accrued distribution equivalent rights on LTIP units 10 444 Class B Convertible unit in-kind distributions 1,293 6,706 Net assets contributed in Holdings drop-down acquisition in excess of consideration paid — 29,716 Valley Wells' operating expense cap adjustment 1,415 518 Purchase of assets in Holdings drop-down acquisition — 62,640 Net liabilities assumed by Holdings in Holdings drop-down acquisition — 1,436 PIK interest 260 — Common unit issuances to General Partner related to equity cures 245 — Capitalization of Interest Cost We capitalize interest on projects during their construction period. Once a project is placed in service, capitalized interest, as a component of the total cost of the construction, is depreciated over the estimated useful life of the asset constructed. We incurred the following interest costs (in thousands): Three Months Ended June 30, Six Months Ended June 30, 2016 2015 2016 2015 Total interest costs $ 9,027 $ 8,531 $ 18,555 $ 16,406 Capitalized interest included in property, plant and equipment, net (194 ) (631 ) (552 ) (1,008 ) Interest expense $ 8,833 $ 7,900 $ 18,003 $ 15,398 Southcross Assets Considered Leases to Third Parties We have pipelines that transport natural gas to two power plants in Nueces County, Texas under fixed-fee contracts. The contracts have a primary term through 2029 and an option to extend the agreements by an additional term of up to ten years. These contracts are considered operating leases under the applicable accounting guidance. Future minimum annual demand payment receipts under these agreements as of June 30, 2016 were as follows: $2.8 million for the remainder of 2016; $5.6 million in 2017; $2.2 million in 2018; $2.2 million in 2019; $2.2 million in 2020 and $13.1 million thereafter. The revenue for the demand payments is recognized on a straight-line basis over the term of the contract. The demand fee revenues under the contracts were $0.7 million and $1.3 million for the three and six months ended June 30, 2016 and 2015, respectively, and have been included within transportation, gathering and processing fees within Note 11. These amounts do not include variable fees based on the actual gas volumes delivered under the contracts. Variable fees recognized in revenues within transportation, gathering and processing fees within Note 11 were $0.8 million and $1.5 million for the three and six months ended June 30, 2016 and 2015, respectively. Deferred revenue associated with these agreements was $6.8 million and $5.3 million at June 30, 2016 and December 31, 2015, respectively.

BASIS OF PRESENTATION AND SUM24

BASIS OF PRESENTATION AND SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Policies)	6 Months Ended
	Jun. 30, 2016
Accounting Policies [Abstract]
Basis of Presentation	Basis of Presentation We prepared this report under the rules and regulations of the Securities and Exchange Commission (the “SEC”) and in accordance with accounting principles generally accepted in the United States of America (“GAAP”) for interim financial statements. Accordingly, these condensed consolidated financial statements do not include all of the disclosures required by GAAP and should be read in conjunction with our 2015 Annual Report on Form 10-K (“2015 Annual Report on Form 10-K”). The condensed consolidated financial statements as of June 30, 2016 and December 31, 2015 , and for the three and six months ended June 30, 2016 and 2015 , are unaudited and have been prepared on the same basis as the audited financial statements included in our 2015 Annual Report on Form 10-K. Adjustments (consisting of normal recurring adjustments) necessary for a fair presentation of the results of operations and financial position have been included herein. All intercompany accounts and transactions have been eliminated in the preparation of the accompanying condensed consolidated financial statements. We recognized the 2015 Holdings Acquisition (defined in Note 2) at Holdings’ historical cost because the acquisition was executed by entities under common control. Thus, the difference between consideration paid and Holdings’ historical cost (net book value) at May 7, 2015, the date on which the 2015 Holdings Acquisition closed, was recorded as an increase to partners’ capital. Due to the common control aspect, the 2015 Holdings Acquisition was accounted for by the Partnership on an “as if pooled” basis for the periods during which common control existed which began on August 4, 2014. See Note 2. The accompanying unaudited condensed consolidated financial statements were prepared in conformity with GAAP, which requires management to make various estimates and assumptions that may affect the amounts of assets and liabilities, disclosures of contingent assets and liabilities at the date of the condensed consolidated financial statements and the reported amounts of revenues and expenses during the period. Actual results may differ from those estimates. Information for interim periods may not be indicative of our operating results for the entire year. The disclosures included in this report provide an update to our 2015 Annual Report on Form 10-K. We evaluate events that occur after the balance sheet date, but before the financial statements are issued, for potential recognition or disclosure. Based on the evaluation, we determined that there were no material subsequent events for recognition or disclosure other than those disclosed in this report.
Recent Accounting Pronouncements	Recent Accounting Pronouncements

ACQUISITION (Tables)

ACQUISITION (Tables)	6 Months Ended
	Jun. 30, 2016
Business Combinations [Abstract]
Reconciliation of Fair Value of Assets Acquired and Liabilities Assumed	The amount of the consideration paid below Holdings’ net book value of the assets received and liabilities assumed of the 2015 Holdings Acquisition was recorded as an increase to partners’ capital as summarized as follows (in thousands): Consideration paid (1) $ 77,640 Total net assets contributed 107,356 Net assets contributed in excess of consideration paid $ 29,716 Allocation of increase to partners' capital: Common limited partner interest $ 14,806 Class B Convertible limited partner interest 7,929 Subordinated limited partner interest 6,387 General Partner interest 594 Total increase to partners' capital $ 29,716 (1) This amount was calculated as follows: $15.0 million of cash plus 4.5 million new common units at an issue price of $13.92 , the closing price of the Partnership’s common units on May 7, 2015.
Schedule of Unaudited, Pro Forma Financial Information	Revenues and net income for the previously separate entities and the combined amounts for the three and six months ended June 30, 2015, are as follows (in thousands): Three Months Ended June 30, 2015 Six Months Ended June 30, 2015 Partnership revenues $ 165,560 $ 346,109 Valley Wells System and Compression Assets revenue 1,660 7,049 Combined revenues $ 167,220 $ 353,158 Partnership net loss $ (14,348 ) $ (25,098 ) Valley Wells System and Compression Assets net loss (1,103 ) (4,258 ) Combined net loss $ (15,451 ) $ (29,356 )

NET (LOSS) INCOME PER LIMITED26

NET (LOSS) INCOME PER LIMITED PARTNER UNIT AND DISTRIBUTIONS (Tables)	6 Months Ended
	Jun. 30, 2016
Earnings Per Share [Abstract]
Schedule of Reconciliation of Net Income loss	The following is a reconciliation of net loss attributable to limited partners and the limited partner units used in the basic and diluted earnings per unit calculations for the three and six months ended June 30, 2016 and 2015 (in thousands, except unit and per unit data): Three Months Ended June 30, Six Months Ended June 30, 2016 2015 2016 2015 Net loss $ (7,396 ) $ (15,451 ) $ (22,915 ) $ (29,356 ) General partner unit in-kind distribution (26 ) (61 ) (26 ) (137 ) Net loss attributable to Holdings — (1,103 ) — (4,258 ) Net loss attributable to partners $ (7,422 ) $ (14,409 ) $ (22,941 ) $ (25,235 ) General partner's interest (1) $ (156 ) $ (306 ) $ (465 ) $ (561 ) Class B Convertible limited partner interest (1) (1,890 ) (3,981 ) (6,081 ) (7,100 ) Limited partners' interest (1) Common $ (3,953 ) $ (6,928 ) $ (11,782 ) $ (11,830 ) Subordinated (1,423 ) (3,194 ) (4,613 ) (5,744 ) (1) General Partner's and limited partners’ interests are calculated based on the allocation of net losses for the period, net of the General Partner unit in-kind distributions. The Class B convertible unit (“Class B Convertible Units”) interest is calculated based on the allocation of only net losses for the period. Three Months Ended June 30, Six Months Ended June 30, Common Units 2016 2015 2016 2015 Interest in net loss $ (3,953 ) $ (6,928 ) $ (11,782 ) $ (11,830 ) Effect of dilutive units - numerator (1) — — — — Dilutive interest in net loss $ (3,953 ) $ (6,928 ) $ (11,782 ) $ (11,830 ) Weighted-average units - basic 33,920,732 26,476,520 31,183,306 25,143,455 Effect of dilutive units - denominator (1) — — — — Weighted-average units - dilutive 33,920,732 26,476,520 31,183,306 25,143,455 Basic and diluted net loss per common unit $ (0.12 ) $ (0.26 ) $ (0.38 ) $ (0.47 ) Three Months Ended June 30, Six Months Ended June 30, Subordinated Units 2016 2015 2016 2015 Interest in net loss $ (1,423 ) $ (3,194 ) $ (4,613 ) $ (5,744 ) Effect of dilutive units - numerator (1) — — — — Dilutive interest in net loss $ (1,423 ) $ (3,194 ) $ (4,613 ) $ (5,744 ) Weighted-average units - basic 12,213,713 12,213,713 12,213,713 12,213,713 Effect of dilutive units - denominator (1) — — — — Weighted-average units - dilutive 12,213,713 12,213,713 12,213,713 12,213,713 Basic and diluted net loss per subordinated unit $ (0.12 ) $ (0.26 ) $ (0.38 ) $ (0.47 ) (1) Because we had a net loss for all periods for common units and the subordinated units, the effect of the dilutive units would be anti-dilutive to the per unit calculation. Therefore, the weighted average units outstanding are the same for basic and dilutive net loss per unit for those periods. The weighted average units that were not included in the computation of diluted per unit amounts was 55,202 and 7,074 for the three and six months ended June 30, 2016, respectively.
Distributions Made to Limited Partners and General Partner, by Distribution	The following table presents the PIK distributions issued on the Class B Convertible Units during 2016 (in thousands, except per unit and in-kind distribution units): Payment Date Attributable to the Quarter Ended Per Unit Distribution In-Kind Class B Convertible Unit In-Kind Class B Convertible Distributions (1) In-Kind Unit to General Partner In-Kind General Partner Distribution Value (1) 2016 August 9, 2016 June 30, 2016 $ 0.3257 289,165 $ 581 5,901 $ 12 May 9, 2016 (2) 0.3257 563,494 1,293 11,499 26 (1) The fair value was calculated as required, based on the common unit price at the quarter end date for the period attributable to the distribution, multiplied by the number of units distributed. (2) We suspended distributions to holders of our Class B Convertible Units for the quarters ended December 31, 2015 and March 31, 2016. However, under the terms of our Partnership agreement, such paid in-kind (“PIK”) distributions continued to accumulate. On May 9, 2016, we issued the accumulated Class B Convertible Units to Holdings and general partner units to our General Partner related to the quarters ended December 31, 2015 and March 31, 2016.

FINANCIAL INSTRUMENTS (Tables)

FINANCIAL INSTRUMENTS (Tables)	6 Months Ended
	Jun. 30, 2016
Derivatives
Schedule of Interest Rate Derivatives [Table Text Block]	Our interest rate swap position was as follows (in thousands): Estimated Fair Value Notional Amount Fixed Rate Effective Date Maturity Date June 30, 2016 $ 100,000 1.195 % June 30, 2015 January 1, 2017 $ (104 )
Schedule of the fair value of the interest rate swap liabilities	The fair values of our interest rate derivative transactions were as follows (in thousands): Significant Other Observable Inputs (Level 2) Fair Value Measurement as of June 30, 2016 December 31, 2015 Current interest rate derivative assets $ — $ 6 Non-current interest rate derivative assets — 4 Current interest rate derivative (liabilities) (104 ) (169 ) Total interest rate derivatives $ (104 ) $ (159 )
Summary of amounts recognized in interest expense associated with derivatives that are not designated as hedging instruments	The realized and unrealized amounts recognized in interest expense associated with derivatives were as follows (in thousands): Three Months Ended June 30, Six Months Ended June 30, 2016 2015 2016 2015 Unrealized loss (gain) on interest rate derivatives $ (85 ) $ 54 $ (55 ) $ 109 Realized loss on interest rate derivatives 99 154 198 258
Commodity Swaps
Derivatives
Schedule of amounts recognized in the statement of operations	he realized and unrealized gain/loss on these derivatives, recognized in revenues in our statements of operations, were as follows (in thousands): Three Months Ended June 30, Six Months Ended June 30, 2016 2015 2016 2015 Realized gain on commodity swap derivatives $ — $ 125 $ — $ 136 Unrealized loss on commodity swap derivatives — — — (112 )

LONG-LIVED ASSETS (Tables)

LONG-LIVED ASSETS (Tables)	6 Months Ended
	Jun. 30, 2016
Property, Plant and Equipment [Abstract]
Schedule of property, plant and equipment	Property, plant and equipment consisted of the following (in thousands): Estimated Useful Life (yrs) June 30, 2016 December 31, 2015 Pipelines 15-30 $ 552,197 $ 542,790 Gas processing, treating and other plants 15 556,917 547,253 Compressors 7-15 76,661 72,750 Rights of way and easements 15 50,160 46,692 Furniture, fixtures and equipment 5 9,320 9,252 Capital lease vehicles 3-5 2,442 2,442 Total property, plant and equipment 1,247,697 1,221,179 Accumulated depreciation and amortization (249,944 ) (212,991 ) Total 997,753 1,008,188 Construction in progress 12,798 32,214 Land and other 23,715 25,599 Property, plant and equipment, net $ 1,034,266 $ 1,066,001

LONG-TERM DEBT (Tables)

LONG-TERM DEBT (Tables)	6 Months Ended
	Jun. 30, 2016
Debt Disclosure [Abstract]
Schedule of Long-term Debt	Third A&R Revolving Credit Agreement The Third A&R Revolving Credit Agreement is a five -year $200 million revolving credit facility (the “Credit Facility”). Borrowings under our Credit Facility bear interest at LIBOR plus an applicable margin or a base rate as defined in the respective credit agreement. Pursuant to the Third A&R Revolving Credit Agreement, among other things: (a) the letters of credit sublimit is $75 million ; and (b) if we fail to comply with the consolidated total leverage ratio, consolidated senior secured leverage ratio and the consolidated interest coverage ratio covenants (the “Financial Covenants”) (a “Financial Covenant Default”), we have the right (a limited number of times) to cure such Financial Covenant Default by having the Sponsors purchase equity interests in or make capital contributions to us resulting in, among other things, proceeds that, if added to consolidated EBITDA, as defined in the Third A&R Revolving Credit Agreement, would result in us satisfying the Financial Covenants. On May 7, 2015, we entered into the First Amendment to our Third A&R Revolving Credit Agreement among the Partnership, as the borrower, the lenders and other parties thereto (the “Credit Agreement Amendment”). The Credit Agreement Amendment, among other things: (a) (i) revised the maximum consolidated total leverage ratio set at 5.5 to 1.0 as of the last day of the fiscal quarter ending each of December 31, 2015, March 31, 2016 and June 30, 2016, (ii) 5.25 to 1.0 as of the last day of the fiscal quarter ending September 30, 2016, and (iv) 5.00 to 1.0 as of the last day of each fiscal quarter thereafter, in each case, without any step-ups in connection with acquisitions; (b) increased the applicable margins used in connection with the loans and the commitment fee so that the applicable margin for Eurodollar Loans (as used in the Third A&R Revolving Credit Agreement) ranges from 2.00% to 4.50% , the applicable margin for base rate loans ranges from 1.00% to 3.50% and the applicable rate for commitment fees ranges from 0.375% to 0.500% ; and (c) allows us an unlimited number of quarterly equity cures related to our Financial Covenant Default through the fourth quarter of 2016, and no more than two in a twelve month period thereafter for the life of the agreement. Term Loan Agreement The Term Loan Agreement is a seven-year $450 million senior secured term loan facility. Borrowings under our Term Loan Agreement bear interest at LIBOR plus 4.25% or a base rate as defined in the respective credit agreement with a LIBOR floor of 1.00% . The facility is amortized in equal quarterly installments in an aggregate annual amount equal to 1% of the original principal amount of the initial loan ( $1.125 million ), with the remainder due on the maturity date. Deferred Financing Costs Deferred financing costs are capitalized and amortized as interest expense under the effective interest method over the term of the related debt. The unamortized balance of deferred financing costs is included in long-term debt on the balance sheets. Changes in deferred financing costs are as follows (in thousands): 2016 2015 Deferred financing costs, January 1 $ 14,141 $ 16,602 Capitalization of deferred financing costs 130 597 Less: Amortization of deferred financing costs (1,523 ) (1,557 ) Deferred financing costs, June 30 $ 12,748 $ 15,642

COMMITMENTS AND CONTINGENCIES (

COMMITMENTS AND CONTINGENCIES (Tables)	6 Months Ended
	Jun. 30, 2016
Commitments and Contingencies Disclosure [Abstract]
Schedule of Capital Lease Obligations	he capital lease obligation amounts included on the balance sheets were as follows (in thousands): June 30, 2016 December 31, 2015 Other current liabilities $ 376 $ 362 Other non-current liabilities 304 522 Total $ 680 $ 884

TRANSACTIONS WITH RELATED PAR31

TRANSACTIONS WITH RELATED PARTIES (Tables)	6 Months Ended
	Jun. 30, 2016
Related Party Transactions [Abstract]
Schedule of Fees, Expenses and Reimbursements Incurred Through Services with Related Parties	We incurred fees and expenses related to the services from our affiliated directors as follows (in thousands): Three Months Ended June 30, Six Months Ended June 30, 2016 2015 2016 2015 Charlesbank Capital Partners, LLC(1) $ 30 $ 42 $ 94 $ 80 EIG 16 17 45 33 Tailwater 18 17 44 33 Total fees and expenses paid for director services to affiliated entities $ 64 $ 76 $ 183 $ 146 We incurred expenses related to these reimbursements as follows (in thousands): Three Months Ended June 30, Six Months Ended June 30, 2016 2015 2016 2015 Reimbursements included in general and administrative expenses $ 3,538 $ 3,845 $ 7,034 $ 7,080 Reimbursements included in operations and maintenance expenses 5,548 5,133 10,846 10,432 Total reimbursements to our General Partner and its affiliates $ 9,086 $ 8,978 $ 17,880 $ 17,512

INCENTIVE COMPENSATION (Tables)

INCENTIVE COMPENSATION (Tables)	6 Months Ended
	Jun. 30, 2016
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]
Summary of information regarding awards of units granted under the Incentive Plan	The following table summarizes information regarding awards of units granted under the LTIP:
Summary of information regarding recognized compensation expense, which is included in general and administrative expense on consolidated statements of operations	The following table summarizes information regarding recognized compensation expense, which is included in general and administrative and operations and maintenance expense on our statements of operations (in thousands): Three Months Ended June 30, Six Months Ended June 30, 2016 2015 2016 2015 Unit-based compensation $ 725 $ 1,662 $ 1,706 $ 2,475
Schedule of employer matching contributions	The following table summarizes information regarding contributions and the expense recognized for the matching contributions, which is included in general and administrative expense on our statements of operations (in thousands): Three Months Ended June 30, Six Months Ended June 30, 2016 2015 2016 2015 Matching contributions expensed for employee savings plan $ 399 $ 172 $ 608 $ 340

REVENUES (Tables)

REVENUES (Tables)	6 Months Ended
	Jun. 30, 2016
Revenues [Abstract]
Schedule of revenues by category	We had revenues consisting of the following categories (in thousands): Three Months Ended June 30, Six Months Ended June 30, 2016 2015 2016 2015 Sales of natural gas $ 53,456 $ 92,518 $ 116,059 $ 205,304 Sales of NGLs and condensate 41,832 39,427 68,022 76,610 Transportation, gathering and processing fees 28,157 33,823 57,292 68,876 Other 1,257 1,452 3,055 2,368 Total revenues $ 124,702 $ 167,220 $ 244,428 $ 353,158

EQUITY IN JOINT VENTURES (Table

EQUITY IN JOINT VENTURES (Tables)	6 Months Ended
	Jun. 30, 2016
Equity Method Investments and Joint Ventures [Abstract]
Schedules of joint ventures	The joint ventures’ summarized financial data from their statements of operations for the three and six months ended June 30, 2016 and 2015 is as follows (in thousands): Three Months Ended June 30, Six Months Ended June 30, 2016 2015 2016 2015 Revenue T2 Eagle Ford $ 1,642 $ 1,215 $ 3,044 $ 2,136 T2 Cogen 1,077 1,187 1,999 2,849 T2 LaSalle 414 450 794 829 Net loss T2 Eagle Ford $ (4,924 ) $ (4,993 ) $ (9,511 ) $ (9,975 ) T2 Cogen (1,424 ) (1,492 ) (2,966 ) (2,853 ) T2 LaSalle (1,468 ) (1,445 ) (2,936 ) (2,965 ) Our equity in losses of joint venture investments is comprised of the following for the three and six months ended June 30, 2016 and 2015 (in thousands): Three Months Ended June 30, Six Months Ended June 30, 2016 2015 2016 2015 T2 Eagle Ford $ (2,462 ) $ (2,496 ) $ (4,755 ) $ (4,988 ) T2 Cogen (709 ) (746 ) (1,479 ) (1,426 ) T2 LaSalle (363 ) (362 ) (729 ) (741 ) Equity in losses of joint venture investments $ (3,534 ) $ (3,604 ) $ (6,963 ) $ (7,155 ) Our investments in joint ventures is comprised of the following as of June 30, 2016 and December 31, 2015 (in thousands): June 30, 2016 December 31, 2015 T2 Eagle Ford $ 106,411 $ 105,755 T2 Cogen 14,872 16,747 T2 LaSalle 17,178 18,024 Investments in joint ventures $ 138,461 $ 140,526

CONCENTRATION OF CREDIT RISK 35

CONCENTRATION OF CREDIT RISK AND TRADE ACCOUNTS RECEIVABLE (Tables)	6 Months Ended
	Jun. 30, 2016
Consolidated revenue concentration
Schedule of consolidated revenue attributed to Formosa and Sherwin	The percentage of total consolidated revenue for each customer that exceeded 10% of total revenues for the three and six months ended June 30, 2016 and 2015 was as follows: Three Months Ended June 30, Six Months Ended June 30, 2016 2015 2016 2015 TexStar Midstream(b) 10.3 % (a) 11.4 % (a) Trafigura AG (a) 13.0 % (a) 11.8 % (a) Information is not provided for periods for which the customer or producer was less than 10% of our consolidated revenue.
Top ten customers
Consolidated revenue concentration
Schedule of consolidated revenue attributed to Formosa and Sherwin	Our top ten customers for the three and six months ended June 30, 2016 and 2015 represent the following percentages of consolidated revenue: Three Months Ended June 30, Six Months Ended June 30, 2016 2015 2016 2015 Top ten customers 53.2 % 55.8 % 57.7 % 56.8 %

SUPPLEMENTAL INFORMATION (Table

SUPPLEMENTAL INFORMATION (Tables)	6 Months Ended
	Jun. 30, 2016
Supplemental Cash Flow Elements [Abstract]
Supplemental Cash Flow Information	Supplemental Cash Flow Information (in thousands) Six Months Ended June 30, 2016 2015 Supplemental Disclosures: Cash paid for interest, net of amounts capitalized $ 18,162 $ 14,221 Cash received for tax refunds 53 58 Supplemental disclosures of non-cash investing and financing activities: Accounts payable related to capital expenditures 2,796 9,615 Capital lease obligations — 342 Accrued distribution equivalent rights on LTIP units 10 444 Class B Convertible unit in-kind distributions 1,293 6,706 Net assets contributed in Holdings drop-down acquisition in excess of consideration paid — 29,716 Valley Wells' operating expense cap adjustment 1,415 518 Purchase of assets in Holdings drop-down acquisition — 62,640 Net liabilities assumed by Holdings in Holdings drop-down acquisition — 1,436 PIK interest 260 — Common unit issuances to General Partner related to equity cures 245 —
Capitalization of Interest Cost	We incurred the following interest costs (in thousands): Three Months Ended June 30, Six Months Ended June 30, 2016 2015 2016 2015 Total interest costs $ 9,027 $ 8,531 $ 18,555 $ 16,406 Capitalized interest included in property, plant and equipment, net (194 ) (631 ) (552 ) (1,008 ) Interest expense $ 8,833 $ 7,900 $ 18,003 $ 15,398
Deferred Financing Costs	We capitalize interest on projects during their construction period. Once a project is placed in service, capitalized interest, as a component of the total cost of the construction, is depreciated over the estimated useful life of the asset constructed. We incurred the following interest costs (in thousands):

ORGANIZATION AND DESCRIPTION 37

ORGANIZATION AND DESCRIPTION OF BUSINESS (Details) $ in Millions	Aug. 04, 2014	Jun. 30, 2016USD ($)dshares	Mar. 31, 2016USD ($)shares	Jun. 30, 2016USD ($)dsegment	Apr. 13, 2016USD ($)	Dec. 31, 2015USD ($)
Business Acquisition [Line Items]
Limited Partners' Contributed Capital					$ 170
Other Additional Capital						$ 50
Stock Issued During Period, Shares, New Issues | shares		359,459,000	8,029,729,000
Deadline for non cash equity cure past filing date | d		15		15
Number of reportable segments | segment				1
Noncash or Part Noncash Acquisition, Investments Acquired			$ 0.5
Equity cure commitment from Holdings used for the period		$ 12.4	$ 11.9
Senior Notes, Current		$ 0.3		$ 0.3		$ 14
Debt Instrument, Interest Rate, Stated Percentage						7.00%
Lenders [Domain]
Business Acquisition [Line Items]
Limited partner ownership interest in Holdings					33.34%
EIG and Tailwater [Member]
Business Acquisition [Line Items]
Proceeds from Contributed Capital				$ 85
Southcross Holdings Common [Member]
Business Acquisition [Line Items]
Limited Liability Company (LLC) or Limited Partnership (LP), Managing Member or General Partner, Ownership Interest	100.00%
Common Units [Member]
Business Acquisition [Line Items]
Limited Liability Company (LLC) or Limited Partnership (LP), Managing Member or General Partner, Ownership Interest	41.00%
General Partner [Member]
Business Acquisition [Line Items]
Limited Liability Company (LLC) or Limited Partnership (LP), Managing Member or General Partner, Ownership Interest	2.00%			2.00%
Stock Issued During Period, Shares, New Issues | shares		171,209,000
EIG [Member]
Business Acquisition [Line Items]
Limited partner ownership interest in Holdings					33.33%

ACQUISITION (Details)

ACQUISITION (Details) $ / shares in Units, $ in Thousands, shares in Millions	May 08, 2015USD ($)	May 07, 2015USD ($)$ / shares	Jun. 30, 2016USD ($)	Jun. 30, 2015USD ($)shares	Mar. 31, 2014USD ($)	Jun. 30, 2016USD ($)	Jun. 30, 2015USD ($)shares
Business Acquisition [Line Items]
NGL pipelines acquired				2			2
Total revenues			$ 124,702	$ 167,220		$ 244,428	$ 353,158
Business Acquisition, Pro Forma Revenue				165,560			346,109
Revenue from Related Parties			24,561	21,091		48,832	28,538
Payments to Acquire Businesses, Gross		$ 77,600
Fair Value of Assets Acquired and Liabilities Assumed, Net [Abstract]
Payments to Acquire Businesses, Net of Cash Acquired		$ 15,000
Business Acquisition, Pro Forma Information [Abstract]
Business Combination, Consideration Transferred	$ 29,716					0	15,000
Business Acquisition, Pro Forma Net Income (Loss)				(14,348)			(25,098)
Net loss			(7,396)	(15,451)		(22,915)	(29,356)
Business Acquisition, Share Price | $ / shares		$ 13.92
TexStar Rich Gas System [Member]
Business Acquisition [Line Items]
Revenue from Related Parties				1,660			7,049
Business Combination, Recognized Identifiable Assets Acquired, Goodwill, and Liabilities Assumed, Net	77,640
Fair Value of Assets Acquired and Liabilities Assumed, Net [Abstract]
Total assets acquired	107,356
Business Acquisition, Pro Forma Information [Abstract]
Business Combination, Consideration Transferred	14,806
Business Acquisition, Pro Forma Net Income (Loss)				(1,103)			(4,258)
Business Combination, Bargain Purchase, Gain Recognized, Amount	29,716
Common Limited Partners [Member]
Business Acquisition, Pro Forma Information [Abstract]
Business Combination, Consideration Transferred					$ 62,640		$ 62,640
Class B Convertible Units [Member]
Business Acquisition, Pro Forma Information [Abstract]
Net loss			(1,890)	(3,981)		(6,081)
Class B Convertible Units [Member] | TexStar Rich Gas System [Member]
Business Acquisition, Pro Forma Information [Abstract]
Business Combination, Consideration Transferred	7,929
Subordinated Limited Partners [Member] | TexStar Rich Gas System [Member]
Business Acquisition, Pro Forma Information [Abstract]
Business Combination, Consideration Transferred	6,387
General Partner [Member]
Business Acquisition, Pro Forma Information [Abstract]
Net loss			$ (156)	$ (306)		$ (465)
General Partner [Member] | TexStar Rich Gas System [Member]
Business Acquisition, Pro Forma Information [Abstract]
Business Combination, Consideration Transferred	$ 594
Common Units [Member]
Fair Value of Assets Acquired and Liabilities Assumed, Net [Abstract]
Common Stock, Shares, Issued | shares				4.5			4.5

NET (LOSS) INCOME PER LIMITED39

NET (LOSS) INCOME PER LIMITED PARTNER UNIT AND DISTRIBUTIONS (Details) - USD ($)	Aug. 04, 2014	Jun. 30, 2016	Mar. 31, 2016	Jun. 30, 2015	Jun. 30, 2016	Jun. 30, 2015	May 09, 2016	Dec. 31, 2015
Earnings Per Limited Partner Unit
distributable cash flow ratio						$ 1
Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount		55,202			7,074
Distribution Made to Member or Limited Partner Unit Distributions Per Unit			$ 0.3257		$ 0.3257
General partner unit in-kind distribution						137,000
Net loss attributable to partners		$ (7,422,000)		$ (14,409,000)	$ (22,941,000)	(25,235,000)
General partner's interest		(7,396,000)		(15,451,000)	(22,915,000)	(29,356,000)
Limited partners' interest					(22,915,000)	(29,356,000)
General Partner [Member]
Earnings Per Limited Partner Unit
Preferred Units Cumulative Right to Receive Future Cash Distributions		11,499			$ 11,499
Limited Liability Company (LLC) or Limited Partnership (LP), Managing Member or General Partner, Ownership Interest	2.00%				2.00%
Net Income (Loss) Allocated to General Partners					$ (459,000)	(561,000)
General partner unit in-kind distribution		26,000		61,000	26,000	137,000
General partner's interest		(156,000)		(306,000)	(465,000)
Limited partners' interest						(502,000)
Southcross Holdings Common [Member]
Earnings Per Limited Partner Unit
Limited Liability Company (LLC) or Limited Partnership (LP), Managing Member or General Partner, Ownership Interest	100.00%
Net loss attributable to partners		0		(1,103,000)	0	(4,258,000)
Limited partners' interest						(4,258,000)
Class B Convertible Units [Member]
Earnings Per Limited Partner Unit
Preferred Units Cumulative Right to Receive Future Cash Distributions		16,522,484			16,522,484		$ 563,494	$ 15,958,990
Net Income (Loss) Allocated to General Partners						(7,100,000)
General partner's interest		$ (1,890,000)		(3,981,000)	(6,081,000)
Limited partners' interest					$ (6,081,000)	(7,100,000)
Limited Partner, units authorized
Earnings Per Limited Partner Unit
Limited Partner, units outstanding		21,896,904			21,896,904			15,005,588
Limited partners' interest		$ (3,953,000)		(6,928,000)	$ (11,782,000)	(11,830,000)
Interest in net loss		(3,953,000)		(6,928,000)	(11,782,000)	(11,830,000)
Dilutive interest in net loss		$ (3,953,000)		$ (6,928,000)	$ (11,782,000)	$ (11,830,000)
Weighted-average units - basic		33,920,732		26,476,520	31,183,306	25,143,455
Weighted-average units - dilutive		33,920,732		26,476,520	31,183,306	25,143,455
Basic and diluted net loss per common unit		$ (0.12)		$ (0.26)	$ (0.38)	$ (0.47)
Subordinated Units [Member]
Earnings Per Limited Partner Unit
Limited Partner, units outstanding		12,213,713			12,213,713			12,213,713
Limited partners' interest		$ (1,423,000)		$ (3,194,000)	$ (4,613,000)	$ (5,744,000)
Interest in net loss		(1,423,000)		(3,194,000)	(4,613,000)	(5,744,000)
Dilutive interest in net loss		$ (1,423,000)		$ (3,194,000)	$ (4,613,000)	$ (5,744,000)
Weighted-average units - basic		12,213,713		12,213,713	12,213,713	12,213,713
Weighted-average units - dilutive		12,213,713		12,213,713	12,213,713	12,213,713
Basic and diluted net loss per common unit		$ (0.12)		$ (0.26)	$ (0.38)	$ (0.47)
Class B Convertible Units [Member]
Earnings Per Limited Partner Unit
Distribution Made to Member or Limited Partner Minimum Quarterly Distributions Declared Per Unit		$ 0.3257
Class B Convertible Units [Member] | Class B Convertible Units [Member]
Earnings Per Limited Partner Unit
Limited Partner, units outstanding		16,522,484			16,522,484
Common Units [Member] | Limited Partner, units authorized
Earnings Per Limited Partner Unit
Limited partners' interest				$ (6,928,000)
Maximum [Member] | Cash Distribution [Member]
Earnings Per Limited Partner Unit
Distribution Made to Member or Limited Partner Distribution Period					45 days

NET (LOSS) INCOME PER LIMITED40

NET (LOSS) INCOME PER LIMITED PARTNER UNIT AND DISTRIBUTIONS (Distributions) (Details) - USD ($)	Aug. 04, 2014	May 15, 2013	Apr. 12, 2013	Jun. 30, 2016	Mar. 31, 2016	Jun. 30, 2015	Jun. 30, 2016	Jun. 30, 2015	May 09, 2016	Dec. 31, 2015
Series A preferred units , PIK distribution earned
Distribution Made to Member or Limited Partner Unit Distributions Per Unit					$ 0.3257		$ 0.3257
In-Kind Distributions (in dollars per unit)								$ (137,000)
Common Units [Member]
Distributions made to Limited Partner [Line Items]
Common Stock, Shares, Issued						4,500,000		4,500,000
Ownership interest held by general partners (as a percent)	41.00%
Class B Convertible Units [Member]
Series A preferred units , PIK distribution earned
Distributions Made to Member or Limited Partner, Distribution Paid in Kind, Shares					563,494,000		289,165,000
In-Kind Unit Distribution (in dollars)					$ 1,293,000,000		$ 581,000,000
Common units, distribution declared and paid
Preferred Units Cumulative Right to Receive Future Cash Distributions				$ 16,522,484			$ 16,522,484		$ 563,494	$ 15,958,990
General Partner [Member]
Distributions made to Limited Partner [Line Items]
Ownership interest held by general partners (as a percent)	2.00%						2.00%
Series A preferred units , PIK distribution earned
Distributions Made to Member or Limited Partner, Distribution Paid in Kind, Shares					11,499,000		5,901,000
In-Kind Unit Distribution (in dollars)					$ 26,000,000		$ 12,000,000
In-Kind Distributions (in dollars per unit)				(26,000)		$ (61,000)	(26,000)	$ (137,000)
Common units, distribution declared and paid
Preferred Units Cumulative Right to Receive Future Cash Distributions				$ 11,499			$ 11,499
Class B Convertible Units [Member]
Series A preferred units , PIK distribution earned
Distribution Made to Member or Limited Partner Minimum Quarterly Distributions Declared Per Unit				$ 0.3257
Share Price										$ 18.61
Class B Convertible Units [Member] | Class B Convertible Units [Member]
Distributions made to Limited Partner [Line Items]
Limited Partner, units outstanding				16,522,484			16,522,484
Conversion of Stock, Shares Issued	14,633,000
Series A Convertible Preferred Units [Member]
Distributions made to Limited Partner [Line Items]
Preferred units issued		248,675	1,466,325
Maximum [Member] | Cash
Distributions made to Limited Partner [Line Items]
Distribution Made to Member or Limited Partner Distribution Period							45 days

FINANCIAL INSTRUMENTS (Details)

FINANCIAL INSTRUMENTS (Details)	3 Months Ended		6 Months Ended
	Jun. 30, 2016USD ($)	Jun. 30, 2015USD ($)	Jun. 30, 2016USD ($)MMBTU	Jun. 30, 2015USD ($)	Dec. 31, 2015USD ($)
Fair value of financial instruments
Derivative Asset	$ 0		$ 0		$ 6,000
Unrealized Gain (Loss) on Derivatives			55,000	$ (221,000)
Fair value measurement	(104,000)		(104,000)		(169,000)
Derivative, Fair Value, Net	1		1
Derivative Assets (Liabilities), at Fair Value, Net	104,000		104,000		$ 159,000
Interest Rate Cap 1.500% [Member]
Fair value of financial instruments
Derivative, Notional Amount	$ 20,000,000		$ 20,000,000
Derivative, Cap Interest Rate	1.50%		1.50%
Commodity Swaps [Member]
Fair value of financial instruments
Gain (Loss) on Sale of Derivatives	$ 0	$ 125,000	$ 0	136,000
Derivative, Nonmonetary Notional Amount, Energy Measure | MMBTU			0
Unrealized Gain (Loss) on Derivatives	0	0	$ 0	(112,000)
Interest rate swap liabilities
Fair value of financial instruments
Gain (Loss) on Sale of Derivatives	(85,000)	54,000
Unrealized Gain (Loss) on Derivatives	99,000	$ 154,000
Interest Rate Cap [Member]
Fair value of financial instruments
Gain (Loss) on Sale of Derivatives			(55,000)	109,000
Unrealized Gain (Loss) on Derivatives			198,000	$ 258,000
Interest Rate Swap 1.196% [Member]
Fair value of financial instruments
Derivative, Notional Amount	$ 100,000,000		$ 100,000,000
Derivative, Fixed Interest Rate	1.195%		1.195%
Interest Rate Cap 3.00% [Member]
Fair value of financial instruments
Derivative, Notional Amount	$ 80,000,000		$ 80,000,000
Derivative, Cap Interest Rate	3.00%		3.00%
Interest Rate Cap $50M, 3% [Member] [Member]
Fair value of financial instruments
Derivative, Notional Amount	$ 50,000,000		$ 50,000,000
Derivative, Cap Interest Rate	3.00%		3.00%
Derivative Liability, Fair Value, Gross Asset	$ 0		$ 0
Fair Value, Measurements, Recurring [Member] | Interest Rate Cap 1.500% [Member]
Fair value of financial instruments
Derivative Liability, Fair Value, Gross Asset	0		0
Fair Value, Measurements, Recurring [Member] | Interest Rate Swap 1.196% [Member]
Fair value of financial instruments
Derivative Liability, Fair Value, Gross Asset	(104)		(104)
Fair Value, Measurements, Recurring [Member] | Interest Rate Cap 3.00% [Member]
Fair value of financial instruments
Derivative Liability, Fair Value, Gross Asset	$ 0		$ 0

FINANCIAL INSTRUMENTS (Details

FINANCIAL INSTRUMENTS (Details 2)	3 Months Ended		6 Months Ended
	Jun. 30, 2016USD ($)	Jun. 30, 2015USD ($)	Jun. 30, 2016USD ($)MMBTU	Jun. 30, 2015USD ($)	Dec. 31, 2015USD ($)
Derivatives
Derivative Asset	$ 0		$ 0		$ 6,000
Derivative Asset, Noncurrent	0		0		4,000
Unrealized loss			55,000	$ (221,000)
Derivative, Fair Value, Net	1		1
Derivative Liability	(104,000)		(104,000)		(169,000)
Derivative Assets (Liabilities), at Fair Value, Net	(104,000)		(104,000)		$ (159,000)
Interest Rate Cap 1.500% [Member]
Derivatives
Notional amount	$ 20,000,000		$ 20,000,000
Derivative, Cap Interest Rate	1.50%		1.50%
Interest Rate Swap [Member]
Derivatives
Unrealized loss	$ 99,000	$ 154,000
Realized (loss) on derivatives	(85,000)	54,000
Interest rate cap contract
Derivatives
Unrealized loss			$ 198,000	258,000
Realized (loss) on derivatives			(55,000)	109,000
Interest rate swap contract
Derivatives
Notional amount	$ 100,000,000		$ 100,000,000
LIBOR based fixed rate paid (as a percent)	1.195%		1.195%
Commodity Swaps
Derivatives
Unrealized loss	$ 0	0	$ 0	(112,000)
Realized (loss) on derivatives	0	$ 125,000	$ 0	$ 136,000
Volume of month-ahead swap contracts (in MMBtu) | MMBTU			0
Interest Rate Cap 3.00% [Member]
Derivatives
Notional amount	$ 80,000,000		$ 80,000,000
Derivative, Cap Interest Rate	3.00%		3.00%
Interest Rate Cap $50M, 3% [Member] [Member]
Derivatives
Notional amount	$ 50,000,000		$ 50,000,000
Derivative Liability, Fair Value, Gross Asset	$ 0		$ 0
Derivative, Cap Interest Rate	3.00%		3.00%
Fair Value, Measurements, Recurring [Member] | Interest Rate Cap 1.500% [Member]
Derivatives
Derivative Liability, Fair Value, Gross Asset	$ 0		$ 0
Fair Value, Measurements, Recurring [Member] | Interest rate swap contract
Derivatives
Derivative Liability, Fair Value, Gross Asset	(104)		(104)
Fair Value, Measurements, Recurring [Member] | Interest Rate Cap 3.00% [Member]
Derivatives
Derivative Liability, Fair Value, Gross Asset	$ 0		$ 0

LONG-LIVED ASSETS (Details)

LONG-LIVED ASSETS (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2016	Jun. 30, 2015	Jun. 30, 2016	Jun. 30, 2015	Dec. 31, 2015
Property, plant and equipment
Intangible Assets, Net (Excluding Goodwill)	$ 1,400		$ 1,400		$ 1,500
Total property, plant and equipment	1,247,697		1,247,697		1,221,179
Accumulated depreciation and amortization	(249,944)		(249,944)		(212,991)
Property, plant and equipment, net	1,034,266		1,034,266		1,066,001
Gain (Loss) on Sale of Assets and Asset Impairment Charges	12,576	$ 38	12,576	$ (180)
Depreciation expense	18,908	$ 17,571	37,449	34,603
Net proceeds from sales of assets			$ 20,402	4,693
Finite-Lived Intangible Asset, Useful Life			30 years
Amortization of Intangible Assets			five
Payments of Capital Distribution			$ 0	(23,306)
Proceeds from (Repayments of) Related Party Debt			14,000	$ 0
Construction in progress
Property, plant and equipment
Property, plant and equipment, net	12,798		$ 12,798		32,214
Pipelines
Property, plant and equipment
Estimated useful life			30 years
Total property, plant and equipment	552,197		$ 552,197		542,790
Gas processing, treating and other plants
Property, plant and equipment
Estimated useful life			15 years
Total property, plant and equipment	556,917		$ 556,917		547,253
Compressors
Property, plant and equipment
Estimated useful life			7 years
Total property, plant and equipment	76,661		$ 76,661		72,750
Rights of way and easements
Property, plant and equipment
Estimated useful life			15 years
Total property, plant and equipment	50,160		$ 50,160		46,692
Furniture, fixtures and equipment
Property, plant and equipment
Estimated useful life			5 years
Total property, plant and equipment	9,320		$ 9,320		9,252
Capital lease vehicles
Property, plant and equipment
Total property, plant and equipment	2,442		$ 2,442		2,442
Capital lease vehicles | Maximum [Member]
Property, plant and equipment
Estimated useful life			5 years
Capital lease vehicles | Minimum [Member]
Property, plant and equipment
Estimated useful life			3 years
Property, plant and equipment excluding construction in progress and land and other
Property, plant and equipment
Property, plant and equipment, net	997,753		$ 997,753		1,008,188
Land and other
Property, plant and equipment
Property, plant and equipment, net	$ 23,715		23,715		$ 25,599
Formosa Pipeline [Member]
Property, plant and equipment
Gain (Loss) on Sale of Assets and Asset Impairment Charges			(13,600)
Net proceeds from sales of assets			$ 15,000

LONG-TERM DEBT (Details)

LONG-TERM DEBT (Details)	Aug. 04, 2014USD ($)	Sep. 30, 2016	Jun. 30, 2016USD ($)	Mar. 31, 2016USD ($)	Jun. 30, 2015USD ($)	Jun. 30, 2016USD ($)$ / shares	Jun. 30, 2015USD ($)	Dec. 31, 2016	Dec. 31, 2015USD ($)	Dec. 31, 2014USD ($)
LONG TERM DEBT
Amortization of deferred financing costs and PIK interest					$ (1,557,000)
Long-term Debt			$ 569,933,000			$ 569,933,000			$ 623,159,000
Long-term Debt, Current Maturities			(4,500,000)			(4,500,000)			(4,500,000)
Deferred Finance Costs, Net			(12,748,000)		(15,642,000)	(12,748,000)	$ (15,642,000)		(14,141,000)	$ (16,602,000)
Deferred Financing Costs, Capitalized During Period					597,000	130,000
Amortization of Financing Costs and Discounts						(1,523,000)
Long-term Debt, Excluding Current Maturities			552,685,000			552,685,000			604,518,000
Unsecured Debt, Current
Debt Instrument Leverage Ratio			5.5
Noncash or Part Noncash Acquisition, Investments Acquired				$ 500,000
Line of Credit Facility, Amount Outstanding			$ 200,000,000			200,000,000
Average outstanding borrowings			$ 608,382,000		$ 276,441,000	$ 617,368,000	$ 265,537,000
Line of Credit Facility, Interest Rate Description	0.01
Weighted average interest rate			5.24%		5.15%	5.23%	5.13%
Maximum quarterly distributions until the target leverage ratio is achieved (in dollars per share) | $ / shares						$ 0.40
Maximum borrowings			$ 626,680,000		$ 563,625,000	$ 628,055,000	$ 563,625,000
Proceeds from Issuance of Other Long-term Debt	$ 450,000,000
Amortization of Debt Discount (Premium)	0.01
Debt Instrument, Periodic Payment	$ 1,125,000
Debt Instrument, Unamortized Discount			(1,600,000)			(1,600,000)			(1,800,000)
General Partner [Member]
LONG TERM DEBT
Line of Credit Facility, Amount Outstanding			16,378,000			16,378,000			18,305,000
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Net					$ 594,000		$ 594,000
Credit Facility, due November 2017
LONG TERM DEBT
Long-term Debt			130,555,000			130,555,000			181,695,000
Line of Credit Facility, Remaining Borrowing Capacity			53,067,000			$ 53,067,000			0
Applicable margin under LIBOR borrowings	4.25%
Third A&R revolving credit agreement [Member]
LONG TERM DEBT
Debt Instrument, Term						5 years
Term Loan [Member]
LONG TERM DEBT
Long-term Debt			$ 439,378,000			$ 439,378,000			$ 441,464,000
Letters of credit
LONG TERM DEBT
unused borrowings	$ 75,000,000
Credit Agreement, due June 2014
LONG TERM DEBT
Applicable margin under LIBOR borrowings						3.25%
Scenario, Forecast [Member] | Credit Facility, due November 2017
LONG TERM DEBT
Debt Instrument Leverage Ratio		5.25						5
Eurodollar [Member]
LONG TERM DEBT
Debt Instrument, Interest Rate, Stated Percentage Rate Range, Minimum						2.00%
Debt Instrument, Interest Rate, Stated Percentage Rate Range, Maximum						4.50%
Base Rate [Member]
LONG TERM DEBT
Debt Instrument, Interest Rate, Stated Percentage Rate Range, Minimum						1.00%
Debt Instrument, Interest Rate, Stated Percentage Rate Range, Maximum						3.50%
Minimum Commitment Fee [Member]
LONG TERM DEBT
Line of Credit Facility, Commitment Fee Percentage						0.375%
Maximum Commitment Fee [Member]
LONG TERM DEBT
Line of Credit Facility, Commitment Fee Percentage						0.50%

COMMITMENTS AND CONTINGENCIES45

COMMITMENTS AND CONTINGENCIES (Details) - USD ($)	3 Months Ended		6 Months Ended
	Jun. 30, 2016	Jun. 30, 2015	Jun. 30, 2016	Jun. 30, 2015	Dec. 31, 2015
Purchase commitments
Capital Lease Obligations, Current	$ 376,000		$ 376,000		$ 362
Capital leases
Amortization expense related to the capital leases	100,000
Capital Lease Obligations Incurred	200,000	$ 200,000
Operating Leases
Expenses associated with operating leases	1,800,000	$ 600,000	2,700,000	$ 1,700,000
Deferred Rent Credit	2,100,000		2,100,000
Capital Lease Obligations, Noncurrent	304,000		304,000		522
Capital Lease Obligations	$ 680,000		680,000		$ 884
Equipment related to capital projects
Purchase commitments
Commitments			7,400,000
Other Capital Projects [Member]
Purchase commitments
Commitments			$ 0

TRANSACTIONS WITH RELATED PAR46

TRANSACTIONS WITH RELATED PARTIES (Details)	Mar. 08, 2014	Jun. 30, 2016USD ($)	Mar. 31, 2016USD ($)	Jun. 30, 2015USD ($)	Jun. 30, 2016USD ($)director	Jun. 30, 2015USD ($)	Dec. 31, 2015USD ($)
Related Party Transactions
Management fees incurred		$ 64,000		$ 76,000	$ 183,000	$ 146,000
Number of directors | director					4
Operating Costs and Expenses		1,700,000
Affiliate Costs					$ 0	17,858,000
Related Party Transaction, Amounts of Transaction		9,086,000		8,978,000	17,880,000	17,512,000
Compensation		200,000			400,000
Accrued Bonuses, Current				1,500,000		1,500,000
Executive retention bonuses		300,000			600,000
Senior Notes, Current		300,000			300,000		$ 14,000,000
Proceeds from (Repayments of) Related Party Debt					14,000,000	0
Revenue from Related Parties		24,561,000		21,091,000	48,832,000	28,538,000
Due to Affiliate, Current		7,304,000			7,304,000		7,871,000
Contractual Agreement, Term	10 years
Due from Affiliate, Current		16,269,000			16,269,000		$ 49,734,000
Management fees incurred
Related Party Transactions
Management fees incurred		30,000		42,000	94,000	80,000
Management fees incurred | Vested units
Related Party Transactions
Management fees incurred		0			0
EIG [Member]
Related Party Transactions
Management fees incurred		$ 16,000		17,000	$ 45,000	33,000
Tailwater [Member]
Related Party Transactions
board member from an affiliated entity		1			1
Management fees incurred		$ 18,000			$ 44,000	33,000
Lenders [Domain]
Related Party Transactions
board member from an affiliated entity		2			2
valley wells [Member]
Related Party Transactions
Affiliate Costs					$ 2,406,000	518,000
Revenue from Related Parties				1,660,000		7,049,000
Limited Partner, units authorized | valley wells [Member]
Related Party Transactions
Affiliate Costs		$ 1,415,000	$ 1,000,000		2,406,000	518,000
General and Administrative Expense [Member]
Related Party Transactions
Related Party Transaction, Selling, General and Administrative Expenses from Transactions with Related Party		3,538,000		3,845,000	7,034,000	7,080,000
Operating Expense [Member]
Related Party Transactions
Related Party Transaction, Selling, General and Administrative Expenses from Transactions with Related Party		$ 5,548,000		$ 5,133,000	$ 10,846,000	$ 10,432,000

SERIES A PREFERRED UNITS (Detai

SERIES A PREFERRED UNITS (Details) - USD ($) $ in Thousands	Aug. 04, 2014	May 15, 2013	Apr. 12, 2013	Jun. 30, 2016	Jun. 30, 2015
Capital contribution					$ 1,281
General Partner [Member]
Capital contribution					$ 1,281
Ownership interest held by general partners (as a percent)	2.00%			2.00%
Preferred units issued
Preferred units issued		248,675	1,466,325

PARTNERS' CAPITAL (Details)

PARTNERS' CAPITAL (Details)	Aug. 04, 2014shares	Jun. 30, 2016USD ($)$ / sharesshares	Mar. 31, 2016shares	Jun. 30, 2016USD ($)$ / sharesshares	Jun. 30, 2015USD ($)shares	May 09, 2016USD ($)	Dec. 31, 2015USD ($)$ / sharesshares
Capital contribution | $					$ 1,281,000
Stock Issued During Period, Shares, New Issues		359,459,000	8,029,729,000
Preferred Units Conversion Trailing Period				2
Preferred Stock, Participation Rights		1
Maximum quarterly distributions until the target leverage ratio is achieved (in dollars per share) | $ / shares				$ 0.40
Limited Partner, units authorized
Distribution Made to Limited Partner, Unit Distribution				0
Common Unit, Issued		0		0
Limited Partner, units issued		36,902,492		36,902,492			28,420,619
Limited Partner, units authorized		38,186,399		38,186,399			29,544,524
Limited Partner, units outstanding		21,896,904		21,896,904			15,005,588
Common Stock, Shares, Outstanding		21,896,904		21,896,904			21,804,219
Share-based Compensation Arrangement by Share-based Payment Award, Accelerated Vesting, Number				92,685
Southcross Holdings Common [Member]
Distribution Made to Limited Partner, Unit Distribution				0
Ownership interest held by general partners (as a percent)	100.00%
Common Stock, Shares, Outstanding		15,005,588		15,005,588			6,616,400
Share-based Compensation Arrangement by Share-based Payment Award, Accelerated Vesting, Number				0
Class B Convertible Units [Member]
Distribution Made to Limited Partner, Unit Distribution				563,494
Common Unit, Issued		0		0
Preferred Units Cumulative Right to Receive Future Cash Distributions | $		$ 16,522,484		$ 16,522,484		$ 563,494	$ 15,958,990
Preferred Units, Outstanding		16,522,484		16,522,484			15,958,990
Share-based Compensation Arrangement by Share-based Payment Award, Accelerated Vesting, Number				0
Subordinated Units [Member]
Distribution Made to Limited Partner, Unit Distribution				0
Common Unit, Issued		0		0
Preferred Units, Outstanding		12,213,713		12,213,713			12,213,713
Share-based Compensation Arrangement by Share-based Payment Award, Accelerated Vesting, Number				0
Subordinated Units [Member]
Limited Partner, units issued							12,213,713
Limited Partner, units authorized		12,213,713		12,213,713
Limited Partner, units outstanding		12,213,713		12,213,713			12,213,713
General Partner [Member]
Distribution Made to Limited Partner, Unit Distribution				184,600
Common Unit, Issued		0		0
Capital contribution | $					$ 1,281,000
Ownership interest held by general partners (as a percent)	2.00%			2.00%
Preferred Units Cumulative Right to Receive Future Cash Distributions | $		$ 11,499		$ 11,499
Stock Issued During Period, Shares, New Issues		171,209,000
Partners' Capital Account, Units		1,339,565		1,339,565			1,154,965
Share-based Compensation Arrangement by Share-based Payment Award, Accelerated Vesting, Number				0
Common Units [Member]
Common Stock, Shares, Issued					4,500,000
Ownership interest held by general partners (as a percent)	41.00%
Limited Partners
Stock Issued During Period, Shares, New Issues		8,389,188
Class B Convertible Units [Member]
Distribution Made to Member or Limited Partner, Distribution Paid in Cash | $ / shares		$ 0.3257
Conversion criteria-distribution per unit | $ / shares		$ 0.44		$ 0.44
Share Price | $ / shares							$ 18.61
Class B Convertible Units [Member] | Class B Convertible Units [Member]
Conversion of Stock, Shares Issued	14,633,000
Limited Partner, units outstanding		16,522,484		16,522,484
TexStar Rich Gas System [Member]
Ownership interest held by general partners (as a percent)	41.00%
Maximum [Member] | Cash Distribution [Member]
Distribution Made to Member or Limited Partner Distribution Period				45 days

INCENTIVE COMPENSATION (Details

INCENTIVE COMPENSATION (Details) - USD ($)	3 Months Ended		6 Months Ended
	Jun. 30, 2016	Jun. 30, 2015	Jun. 30, 2016	Jun. 30, 2015	Dec. 31, 2015
Unit based compensation
Allocated Share-based Compensation Expense	$ 725,000	$ 1,662,000	$ 1,706,000	$ 2,475,000
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period	47,500
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period, Intrinsic Value, Amount Per Share	$ 3.56
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Period Increase (Decrease)	(32,265)
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Forfeitures, Weighted Average Grant Date Fair Value	$ 17.03
Shares Paid for Tax Withholding for Share Based Compensation			(41,605)
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other Than Options, Recaptured for Tax Withholding, Weighted Average Grant Date Fair Value			$ 12.80
Share-based Compensation Arrangement by Share-based Payment Award, Options, Vested and Expected to Vest, Exercisable, Number	(92,686)		(92,686)
Share-based Compensation Arrangement by Share-based Payment Award, Options, Vested and Expected to Vest, Outstanding, Weighted Average Exercise Price	$ 13		$ 13
Weighted-average grant date fair value
Share-based Compensation Arrangement by Share-based Payment Award, Shares Issued in Period				84,423
Employee Savings Plan [Member]
Unit based compensation
Defined Contribution Plan, Employer Discretionary Contribution Amount	$ 399,000	$ 172,000	$ 608,000	$ 340,000
Employer matching contribution, percent of employee's contribution			100.00%
Weighted-average grant date fair value
Employer matching contribution, percent of employees' gross pay			6.00%
Maximum annual contributions by employer, amount (per employee)			$ 18,000
Long Term Incentive Plan [Member]
Unit based compensation
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Number	568,864		568,864		687,920
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Weighted Average Grant Date Fair Value	$ 14.86		$ 14.86		$ 15.56
Weighted-average grant date fair value
Long Term Incentive Phantom Units approved					4,500,000
Incentive Plan
Unit based compensation
Vesting period			3 years
Weighted-average grant date fair value
Fair value			$ 200,000
Share-based compensation cost not yet recognized	$ 5,500,000		$ 5,500,000
Units available for issuance (in shares)	5,084,444		5,084,444
1yr vesting period [Domain] | Incentive Plan
Weighted-average grant date fair value
Period of amortization of compensation expense			1 year
3yr vesting period [Domain] | Incentive Plan
Weighted-average grant date fair value
Period of amortization of compensation expense			3 years

REVENUES (Details)

REVENUES (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2016	Jun. 30, 2015	Jun. 30, 2016	Jun. 30, 2015
Revenues [Abstract]
Sales of natural gas	$ 53,456	$ 92,518	$ 116,059	$ 205,304
Sales of NGLs and condensate	41,832	39,427	68,022	76,610
Transportation, gathering and processing fees	28,157	33,823	57,292	68,876
Other	1,257	1,452	3,055	2,368
Total revenues	$ 124,702	$ 167,220	$ 244,428	$ 353,158

EQUITY IN JOINT VENTURES (Detai

EQUITY IN JOINT VENTURES (Details) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2016USD ($)joint_venture	Jun. 30, 2015USD ($)	Jun. 30, 2016USD ($)joint_venture	Jun. 30, 2015USD ($)	Dec. 31, 2015USD ($)	Aug. 04, 2014
Income (Loss) from Equity Method Investments	$ (3,534)	$ (3,604)	$ (6,963)	$ (7,155)
number of joint ventures | joint_venture	3		3
Equity Method Investment Summarized Financial Information, Equity	$ 138,461		$ 138,461		$ 140,526
Natural Gas Midstream Revenue	124,702	167,220	244,428	353,158
Net Income (Loss) Attributable to Parent	(7,396)	(15,451)	(22,915)	(29,356)
Revenues	100,141	146,129	195,596	324,620
T2 Eagle Ford [Member]
Income (Loss) from Equity Method Investments	(2,462)	(2,496)	(4,755)	(4,988)
Equity Method Investment Summarized Financial Information, Equity	106,411		106,411		105,755
Equity Method Investment, Summarized Financial Information, Net Income (Loss)	(4,924)	(4,993)	(9,511)	(9,975)
Natural Gas Midstream Revenue	1,642	1,215	3,044	2,136
T2 Cogen [Member]
Income (Loss) from Equity Method Investments	(709)	(746)	(1,479)	(1,426)
Equity Method Investment Summarized Financial Information, Equity	14,872		14,872		16,747
Equity Method Investment, Summarized Financial Information, Net Income (Loss)	(1,424)	(1,492)	(2,966)	(2,853)
Natural Gas Midstream Revenue	1,077	1,187	1,999	2,849
T2 LaSalle [Member]
Income (Loss) from Equity Method Investments	(363)	(362)	(729)	(741)
Equity Method Investment Summarized Financial Information, Equity	17,178		17,178		$ 18,024
Equity Method Investment, Summarized Financial Information, Net Income (Loss)	(1,468)	(1,445)	(2,936)	(2,965)
Natural Gas Midstream Revenue	$ 414	$ 450	$ 794	$ 829
T2 LaSalle [Member]
Equity Method Investment, Ownership Percentage						25.00%
T2 Cogen [Member]
Equity Method Investment, Ownership Percentage						50.00%
T2 Eagle Ford [Member]
Equity Method Investment, Ownership Percentage	50.00%		50.00%

CONCENTRATION OF CREDIT RISK 52

CONCENTRATION OF CREDIT RISK AND TRADE ACCOUNTS RECEIVABLE (Details) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2016	Jun. 30, 2015	Jun. 30, 2016customer	Jun. 30, 2015customer	Dec. 31, 2015USD ($)
Consolidated revenue concentration
Allowance for Doubtful Accounts Receivable, Current | $					$ (0.1)
Texstar Midstream [Member] | Customer concentration | Consolidated revenue
Consolidated revenue concentration
Concentration risk percentage	10.30%		11.40%
TexStar Midstream(b) | Customer concentration | Consolidated revenue
Consolidated revenue concentration
Concentration risk percentage		13.00%		11.80%
Top ten customers | Customer concentration | Consolidated revenue
Consolidated revenue concentration
Number of top customers | customer			10	10
Concentration risk percentage	53.20%	55.80%	57.70%	56.80%

SUPPLEMENTAL INFORMATION (Detai

SUPPLEMENTAL INFORMATION (Details) $ in Thousands	May 08, 2015USD ($)	Mar. 08, 2014	Jun. 30, 2016USD ($)	Mar. 31, 2016USD ($)	Jun. 30, 2015USD ($)	Mar. 31, 2014USD ($)	Jun. 30, 2016USD ($)	Jun. 30, 2015USD ($)	Jun. 30, 2016USD ($)	Dec. 31, 2015USD ($)	Jun. 30, 2015USD ($)	Dec. 31, 2014USD ($)
Operating Leased Assets [Line Items]
Interest Paid, Net							$ 18,162	$ 14,221
Proceeds from Income Tax Refunds							(53)	(58)
Capital Expenditures Incurred but Not yet Paid							2,796	9,615
Repayments of Debt and Capital Lease Obligations							0	342
Noncash Financing Activities, Accrued Distribution on Long Term Incentive Plan							10	444
Interest Costs Incurred [Abstract]
Total interest costs			$ 9,027		$ 8,531		18,555	16,406
Capitalized interest included in property, plant and equipment, net			(194)		(631)		(552)	(1,008)
Interest expense			8,833		7,900		18,003	15,398
Deferred Financing Costs [Roll Forward]
Deferred financing costs, January 1			12,748		15,642		12,748	15,642	$ 12,748	$ 14,141	$ 15,642	$ 16,602
Deferred Financing Costs, Capitalized During Period					597		130
Amortization of Financing Costs and Discounts							1,523
Amortization of deferred financing costs					(1,557)
Deferred financing costs, September 30			12,748		$ 15,642		12,748	15,642
Number of power plants									2
Contractual agreement, term		10 years
Contingent fees			(700)				(1,300)
Business Combination, Contingent Consideration Arrangements, Change in Amount of Contingent Consideration, Liability			(800)				(1,500)
Affiliate Costs							0	17,858
Business Combination, Consideration Transferred	$ (29,716)						0	(15,000)
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Liabilities									$ 0		1,436
Deferred Revenue									6,800	$ 5,300
Paid-in-Kind Interest							260	0
Stock Issued							245	0
Natural Gas Pipeline Contracts [Member]
Deferred Financing Costs [Roll Forward]
Operating Leases, Future Minimum Payments, Due in Two Years									2,800
Operating Leases, Future Minimum Payments, Due in Four Years									5,600
Operating leases, future minimum payments due in fifth year									2,200
Operating leases, future minimum payments due in sixth year									2,200
Operating leases, future minimum payments due after sixth year									13,100
valley wells [Member]
Deferred Financing Costs [Roll Forward]
Affiliate Costs							2,406	518
Business Combination, Consideration Transferred	(14,806)
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Assets	(107,356)
Southcross Holdings Common [Member]
Deferred Financing Costs [Roll Forward]
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Net											(29,716)
Business Combination, Consideration Transferred								(77,640)
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Liabilities											1,436
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Assets									$ 0
Class B Convertible Units [Member]
Deferred Financing Costs [Roll Forward]
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Net											(7,929)
Temporary Equity Accretion Preferred Unit In-kind Distribution								(6,706)
Class B Convertible Units [Member] | Class B Convertible Units [Member]
Deferred Financing Costs [Roll Forward]
Temporary Equity Accretion Preferred Unit In-kind Distribution							(1,293)	(6,706)
Class B Convertible Units [Member] | valley wells [Member]
Deferred Financing Costs [Roll Forward]
Business Combination, Consideration Transferred	$ (7,929)
Limited Partner, units authorized
Deferred Financing Costs [Roll Forward]
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Net											$ (14,806)
Business Combination, Consideration Transferred						$ (62,640)		(62,640)
Limited Partner, units authorized | Class B Convertible Units [Member]
Deferred Financing Costs [Roll Forward]
Temporary Equity Accretion Preferred Unit In-kind Distribution							945	4,414
Limited Partner, units authorized | valley wells [Member]
Deferred Financing Costs [Roll Forward]
Affiliate Costs			$ 1,415	$ 1,000			$ 2,406	$ 518