CONDENSED CONSOLIDATING FINANCIAL INFORMATION (Tables)

12 Months Ended

Dec. 31, 2017

Organization Consolidation And Presentation Of Financial Statements [Abstract]

Balance sheets as of December 31, 2017 and 2016 follow.

	December 31, 2017
	SMLP		Co-Issuers		Guarantor Subsidiaries		Non-Guarantor Subsidiaries		Consolidating adjustments			Total
	(In thousands)
Assets
Cash and cash equivalents	$	126	$	75	$	1,138	$	91	$	—		$	1,430
Accounts receivable		22		—		65,842		6,437		—			72,301
Other current assets		1,188		—		2,697		442		—			4,327
Due from affiliate		—		—		493,067		22,030		(515,097	)		—
Total current assets		1,336		75		562,744		29,000		(515,097	)		78,058
Property, plant and equipment, net		4,206		—		1,442,333		348,590		—			1,795,129
Intangible assets, net		—		—		278,958		22,387		—			301,345
Goodwill		—		—		16,211		—		—			16,211
Investment in equity method investees		—		—		—		690,485		—			690,485
Other noncurrent assets		2,547		10,913		105		—		—			13,565
Investment in subsidiaries		2,019,700		3,324,464		—		—		(5,344,164	)		—
Total assets	$	2,027,789	$	3,335,452	$	2,300,351	$	1,090,462	$	(5,859,261	)	$	2,894,793

Liabilities and Partners' Capital
Trade accounts payable	$	209	$	—	$	11,283	$	4,883	$	—		$	16,375
Accrued expenses		928		—		10,592		979		—			12,499
Due to affiliate		263,935		252,250		—		—		(515,097	)		1,088
Deferred revenue		—		—		4,000		—		—			4,000
Ad valorem taxes payable		—		—		7,809		520		—			8,329
Accrued interest		—		12,310		—		—		—			12,310
Accrued environmental remediation		—		—		—		3,130		—			3,130
Other current liabilities		6,395		—		4,385		478		—			11,258
Total current liabilities		271,467		264,560		38,069		9,990		(515,097	)		68,989
Long-term debt		—		1,051,192		—		—		—			1,051,192
Deferred Purchase Price Obligation		362,959		—		—		—		—			362,959
Deferred revenue		—		—		12,707		—		—			12,707
Noncurrent accrued environmental remediation		—		—		—		2,214		—			2,214
Other noncurrent liabilities		3,694		—		3,293		76		—			7,063
Total liabilities		638,120		1,315,752		54,069		12,280		(515,097	)		1,505,124

Total partners' capital		1,389,669		2,019,700		2,246,282		1,078,182		(5,344,164	)		1,389,669
Total liabilities and partners' capital	$	2,027,789	$	3,335,452	$	2,300,351	$	1,090,462	$	(5,859,261	)	$	2,894,793

	December 31, 2016
	SMLP		Co-Issuers		Guarantor Subsidiaries		Non-Guarantor Subsidiaries		Consolidating adjustments			Total
	(In thousands)
Assets
Cash and cash equivalents	$	698	$	51	$	5,768	$	911	$	—		$	7,428
Accounts receivable		53		—		91,152		6,159		—			97,364
Other current assets		1,526		—		2,428		355		—			4,309
Due from affiliate		11,768		38,013		366,867		—		(416,648	)		—
Total current assets		14,045		38,064		466,215		7,425		(416,648	)		109,101
Property, plant and equipment, net		2,266		—		1,508,824		342,581		—			1,853,671
Intangible assets, net		—		—		398,992		22,460		—			421,452
Goodwill		—		—		16,211		—		—			16,211
Investment in equity method investees		—		—		—		707,415		—			707,415
Other noncurrent assets		1,993		5,198		138		—		—			7,329
Investment in subsidiaries		2,132,757		3,347,393		—		—		(5,480,150	)		—
Total assets	$	2,151,061	$	3,390,655	$	2,390,380	$	1,079,881	$	(5,896,798	)	$	3,115,179

Liabilities and Partners' Capital
Trade accounts payable	$	978	$	—	$	10,640	$	4,633	$	—		$	16,251
Accrued expenses		2,399		114		6,284		2,592		—			11,389
Due to affiliate		405,138		—		—		11,768		(416,648	)		258
Ad valorem taxes payable		16		—		9,847		725		—			10,588
Accrued interest		—		17,483		—		—		—			17,483
Accrued environmental remediation		—		—		—		4,301		—			4,301
Other current liabilities		6,717		—		4,047		707		—			11,471
Total current liabilities		415,248		17,597		30,818		24,726		(416,648	)		71,741
Long-term debt		—		1,240,301		—		—		—			1,240,301
Deferred Purchase Price Obligation		563,281		—		—		—		—			563,281
Deferred revenue		—		—		57,465		—		—			57,465
Noncurrent accrued environmental remediation		—		—		—		5,152		—			5,152
Other noncurrent liabilities		2,859		—		4,602		105		—			7,566
Total liabilities		981,388		1,257,898		92,885		29,983		(416,648	)		1,945,506

Total partners' capital		1,169,673		2,132,757		2,297,495		1,049,898		(5,480,150	)		1,169,673
Total liabilities and partners' capital	$	2,151,061	$	3,390,655	$	2,390,380	$	1,079,881	$	(5,896,798	)	$	3,115,179

Condensed Statement of Operations

Statements of operations for the years ended December 31, 2017, 2016 and 2015 follow.

	Year ended December 31, 2017
	SMLP			Co-Issuers			Guarantor Subsidiaries			Non-Guarantor Subsidiaries			Consolidating adjustments		Total
	(In thousands)
Revenues:
Gathering services and related fees	$	—		$	—		$	334,625		$	59,802		$	—	$	394,427
Natural gas, NGLs and condensate sales		—			—			68,459			—			—		68,459
Other revenues		—			—			25,583			272			—		25,855
Total revenues		—			—			428,667			60,074			—		488,741
Costs and expenses:
Cost of natural gas and NGLs		—			—			57,237			—			—		57,237
Operation and maintenance		—			—			85,599			8,283			—		93,882
General and administrative		—			—			47,878			6,803			—		54,681
Depreciation and amortization		1,101			—			101,319			13,055			—		115,475
Transaction costs		73			—			—			—			—		73
(Gain) loss on asset sales, net		—			—			(15	)		542			—		527
Long-lived asset impairment		—			—			187,823			879			—		188,702
Total costs and expenses		1,174			—			479,841			29,562			—		510,577
Other income		298			—			—			—			—		298
Interest expense		—			(68,131	)		—			—			—		(68,131	)
Early extinguishment of debt		—			(22,039	)		—			—			—		(22,039	)
Deferred Purchase Price Obligation		200,322			—			—			—			—		200,322
Income (loss) before income taxes and loss from equity method investees		199,446			(90,170	)		(51,174	)		30,512			—		88,614
Income tax expense		(341	)		—			—			—			—		(341	)
Loss from equity method investees		—			—			—			(2,223	)		—		(2,223	)
Equity in loss of consolidated subsidiaries		(113,055	)		(22,885	)		—			—			135,940		—
Net income	$	86,050		$	(113,055	)	$	(51,174	)	$	28,289		$	135,940	$	86,050

	Year ended December 31, 2016
	SMLP			Co-Issuers			Guarantor Subsidiaries		Non-Guarantor Subsidiaries			Consolidating adjustments			Total
	(In thousands)
Revenues:
Gathering services and related fees	$	—		$	—		$	294,837	$	51,124		$	—		$	345,961
Natural gas, NGLs and condensate sales		—			—			35,833		—			—			35,833
Other revenues		—			—			20,227		341			—			20,568
Total revenues		—			—			350,897		51,465			—			402,362
Costs and expenses:
Cost of natural gas and NGLs		—			—			27,421		—			—			27,421
Operation and maintenance		—			—			89,031		6,303			—			95,334
General and administrative		—			—			44,922		7,488			—			52,410
Depreciation and amortization		580			—			101,415		10,244			—			112,239
Transaction costs		1,321			—			—		—			—			1,321
Loss (gain) on asset sales, net		—			—			97		(4	)		—			93
Long-lived asset impairment		—			—			1,235		529			—			1,764
Total costs and expenses		1,901			—			264,121		24,560			—			290,582
Other income		116			—			—		—			—			116
Interest expense		(1,441	)		(62,369	)		—		—			—			(63,810	)
Deferred Purchase Price Obligation		(55,854	)		—			—		—			—			(55,854	)
(Loss) income before income taxes and loss from equity method investees		(59,080	)		(62,369	)		86,776		26,905			—			(7,768	)
Income tax expense		(75	)		—			—		—			—			(75	)
Loss from equity method investees		—			—			—		(30,344	)		—			(30,344	)
Equity in earnings of consolidated subsidiaries		20,968			83,337			—		—			(104,305	)		—
Net (loss) income	$	(38,187	)	$	20,968		$	86,776	$	(3,439	)	$	(104,305	)	$	(38,187	)

	Year ended December 31, 2015
	SMLP			Co-Issuers			Guarantor Subsidiaries			Non-Guarantor Subsidiaries			Consolidating adjustments		Total
	(In thousands)
Revenues:
Gathering services and related fees	$	—		$	—		$	320,454		$	17,365		$	—	$	337,819
Natural gas, NGLs and condensate sales		—			—			42,079			—			—		42,079
Other revenues		—			—			20,283			376			—		20,659
Total revenues		—			—			382,816			17,741			—		400,557
Costs and expenses:
Cost of natural gas and NGLs		—			—			31,398			—			—		31,398
Operation and maintenance		—			—			91,763			3,223			—		94,986
General and administrative		—			—			40,134			4,974			—		45,108
Depreciation and amortization		603			—			98,002			6,512			—		105,117
Transaction costs		1,342			—			—			—			—		1,342
Environmental remediation		—			—			—			21,800			—		21,800
Gain on asset sales, net		—			—			(172	)		—			—		(172	)
Long-lived asset impairment		—			—			9,305			—			—		9,305
Goodwill impairment		—			—			248,851			—			—		248,851
Total costs and expenses		1,945			—			519,281			36,509			—		557,735
Other income		2			—			—			—			—		2
Interest expense		(10,494	)		(48,598	)		—			—			—		(59,092	)
Loss before income taxes and loss from equity method investees		(12,437	)		(48,598	)		(136,465	)		(18,768	)		—		(216,268	)
Income tax benefit		603			—			—			—			—		603
Loss from equity method investees		—			—			—			(6,563	)		—		(6,563	)
Equity in loss of consolidated subsidiaries		(210,394	)		(161,796	)		—			—			372,190		—
Net loss	$	(222,228	)	$	(210,394	)	$	(136,465	)	$	(25,331	)	$	372,190	$	(222,228	)

Condensed Cash Flow Statement

Statements of cash flows for the years ended December 31, 2017 and 2016 follow.

	Year ended December 31, 2017
	SMLP			Co-Issuers			Guarantor Subsidiaries			Non-Guarantor Subsidiaries			Consolidating adjustments			Total
	(In thousands)
Cash flows from operating activities:
Net cash provided by (used in) operating activities	$	7,122		$	(68,915	)	$	221,115		$	78,510		$	—		$	237,832

Cash flows from investing activities:
Capital expenditures		(3,041	)		—			(98,926	)		(22,248	)		—			(124,215	)
Proceeds from asset sales		—			—			—			2,300			—			2,300
Contributions to equity method investees		—			—			—			(25,513	)		—			(25,513	)
Purchase of noncontrolling interest		(797	)		—			—			—			—			(797	)
Other, net		(458	)		—			—			—			—			(458	)
Advances to affiliates		(278,493	)		—			(126,198	)		(22,031	)		426,722			—
Net cash used in investing activities		(282,789	)		—			(225,124	)		(67,492	)		426,722			(148,683	)

Cash flows from financing activities:
Distributions to unitholders		(181,478	)		—			—			—			—			(181,478	)
Borrowings under Revolving Credit Facility		—			247,500			—			—			—			247,500
Repayments under Revolving Credit Facility		—			(634,500	)		—			—			—			(634,500	)
Debt issuance costs		—			(16,390	)		—			—			—			(16,390	)
Payment of redemption and call premiums on senior notes		—			(17,932	)		—			—			—			(17,932	)
Proceeds from ATM Program common unit issuances, net of costs		17,078			—			—			—			—			17,078
Proceeds from issuance of Series A Preferred Units, net of costs		293,238			—			—			—			—			293,238
Contribution from General Partner		465			—			—			—			—			465
Issuance of senior notes		—			500,000			—			—			—			500,000
Tender and redemption of senior notes		—			(300,000	)		—			—			—			(300,000	)
Other, net		(2,437	)		—			(621	)		(70	)		—			(3,128	)
Advances from affiliates		148,229			290,261			—			(11,768	)		(426,722	)		—
Net cash provided by (used in) financing activities		275,095			68,939			(621	)		(11,838	)		(426,722	)		(95,147	)
Net change in cash and cash equivalents		(572	)		24			(4,630	)		(820	)		—			(5,998	)
Cash and cash equivalents, beginning of period		698			51			5,768			911			—			7,428
Cash and cash equivalents, end of period	$	126		$	75		$	1,138		$	91		$	—		$	1,430

	Year ended December 31, 2016
	SMLP			Co-Issuers			Guarantor Subsidiaries			Non-Guarantor Subsidiaries			Consolidating adjustments			Total
	(In thousands)
Cash flows from operating activities:
Net cash provided by (used in) operating activities	$	9,691		$	(58,254	)	$	201,516		$	77,542		$	—		$	230,495

Cash flows from investing activities:
Capital expenditures		(1,668	)		—			(55,185	)		(85,866	)		—			(142,719	)
Contributions to equity method investees		—			—			—			(31,582	)		—			(31,582	)
Acquisitions of gathering systems from affiliate		(359,431	)		—			—			—			—			(359,431	)
Other, net		(394	)		—			—			—			—			(394	)
Advances to affiliates		(15,697	)		(255,070	)		(150,775	)		—			421,542			—
Net cash used in investing activities		(377,190	)		(255,070	)		(205,960	)		(117,448	)		421,542			(534,126	)

Cash flows from financing activities:
Distributions to unitholders		(167,504	)		—			—			—			—			(167,504	)
Borrowings under Revolving Credit Facility		12,000			508,300			—			—			—			520,300
Repayments under Revolving Credit Facility		—			(204,300	)		—			—			—			(204,300	)
Debt issuance costs		—			(3,032	)		—			—			—			(3,032	)
Proceeds from underwritten issuance of common units, net of costs		125,233			—			—			—			—			125,233
Contribution from General Partner		2,702			—			—			—			—			2,702
Cash advance (to) from Summit Investments (from) to contributed subsidiaries, net		(12,000	)		—			3,223			20,991			—			12,214
Expenses paid by Summit Investments on behalf of contributed subsidiaries		3,030			—			—			1,791			—			4,821
Other, net		(1,182	)		—			(121	)		135			—			(1,168	)
Advances from affiliates		405,845			—			—			15,697			(421,542	)		—
Net cash provided by (used in) financing activities		368,124			300,968			3,102			38,614			(421,542	)		289,266
Net change in cash and cash equivalents		625			(12,356	)		(1,342	)		(1,292	)		—			(14,365	)
Cash and cash equivalents, beginning of period		73			12,407			7,110			2,203			—			21,793
Cash and cash equivalents, end of period	$	698		$	51		$	5,768		$	911		$	—		$	7,428

	Year ended December 31, 2015
	SMLP			Co-Issuers			Guarantor Subsidiaries			Non-Guarantor Subsidiaries			Consolidating adjustments			Total
	(In thousands)
Cash flows from operating activities:
Net cash provided by (used in) operating activities	$	409		$	(46,716	)	$	207,684		$	29,998		$	—		$	191,375

Cash flows from investing activities:
Capital expenditures		(429	)		—			(120,784	)		(151,012	)		—			(272,225	)
Contributions to equity method investees		—			—			—			(86,200	)		—			(86,200	)
Acquisitions of gathering systems from affiliate		(288,618	)		—			—			—			—			(288,618	)
Other, net		—			—			323			—			—			323
Advances to affiliates		(2,589	)		(88,221	)		(110,003	)		—			200,813			—
Net cash used in investing activities		(291,636	)		(88,221	)		(230,464	)		(237,212	)		200,813			(646,720	)

Cash flows from financing activities:
Distributions to unitholders		(152,074	)		—			—			—			—			(152,074	)
Borrowings under Revolving Credit Facility		180,000			187,000			—			—			—			367,000
Repayments under Revolving Credit Facility		(100,000	)		(51,000	)		—			—			—			(151,000	)
Repayments under term loan		(182,500	)		—			—			—			—			(182,500	)
Debt issuance costs		(135	)		(277	)		—			—			—			(412	)
Proceeds from underwritten issuance of common units, net of costs		221,977			—			—			—			—			221,977
Contribution from General Partner		4,737			—			—			—			—			4,737
Cash advance from Summit Investments to contributed subsidiaries, net		102,500			—			18,811			199,216			—			320,527
Expenses paid by Summit Investments on behalf of contributed subsidiaries		12,655			—			3,864			6,360			—			22,879
Other, net		(1,615	)		—			(192	)		—			—			(1,807	)
Advances from affiliates		198,224			—			—			2,589			(200,813	)		—
Net cash provided by financing activities		283,769			135,723			22,483			208,165			(200,813	)		449,327
Net change in cash and cash equivalents		(7,458	)		786			(297	)		951			—			(6,018	)
Cash and cash equivalents, beginning of period		7,531			11,621			7,407			1,252			—			27,811
Cash and cash equivalents, end of period	$	73		$	12,407		$	7,110		$	2,203		$	—		$	21,793