Third Coast Midstream, LLC - 10-K filing on 2015-03-10

Acquisitions Narrative (Details) (USD $)	0 Months Ended	3 Months Ended								12 Months Ended			0 Months Ended	3 Months Ended	0 Months Ended	9 Months Ended	0 Months Ended		3 Months Ended
Acquisitions Narrative (Details) (USD $)	Jan. 29, 2014	Dec. 31, 2014 bbl	Sep. 30, 2014	Jun. 30, 2014	Mar. 31, 2014	Dec. 31, 2013	Sep. 30, 2013	Jun. 30, 2013	Mar. 31, 2013	Dec. 31, 2014 mi bbl	Dec. 31, 2013	Dec. 31, 2012	Oct. 14, 2014	Dec. 31, 2014	Jan. 31, 2014 mi	Sep. 30, 2014	Apr. 15, 2013	Dec. 17, 2013	Apr. 15, 2013	Aug. 20, 2014	Dec. 11, 2013	Jul. 02, 2012
Business Acquisition [Line Items]
Proceeds from sale of property, plant, and equipment										$ 6,323,000	$ 500,000	$ 128,000
Noncontrolling interest, ownership percentage by noncontrolling owners		12.60%				7.80%				12.60%	7.80%			12.60%
Noncontrolling Interest, Ownership Percentage by Parent		92.20%								92.20%				92.20%
Partners' Capital Account, Distributions to Existing Interest										0	15,612,000	0
Discount rate		9.50%								10.00%	10.00%
Revenues		80,177,000	70,305,000	77,680,000	80,238,000	76,770,000	77,519,000	77,191,000	62,599,000	308,400,000	294,079,000	208,268,000
Net income (loss)		(94,297,000)	(2,456,000)	(1,667,000)	400,000	(5,641,000)	(2,731,000)	(22,114,000)	(3,553,000)	(98,020,000)	(34,039,000)	(6,508,000)
Operating Income (Loss)		(91,633,000)	(290,000)	734,000	2,450,000	(2,591,000)	(104,000)	(17,841,000)	(1,661,000)	(88,739,000)	(22,197,000)	(1,664,000)
Length Of Pipeline										3,000
Issuance of common units, net of offering costs	86,900,000	119,300,000								204,255,000	54,853,000	0
Limited partners, units issued	3,400,000	22,670,000				7,414,000				22,670,000	7,414,000			22,670,000						4,622,352	2,568,712
Useful life										25 years
Finite-lived intangible assets, amortization expense, next twelve months		5,300,000								5,300,000				5,300,000
Payments to acquire equity method investments										12,000,000	0	0
Earnings in unconsolidated affiliates										348,000	0	0
Proceeds from equity method investement, return of capital			2,000,000							1,632,000	0	0
Million barrels of storage capacity		1,700,000								1,700,000				1,700,000
Distributions										28,009,000	16,120,000	16,070,000
Payments on long-term debt										250,870,000	131,571,000	59,230,000
Series A convertible preferred units		107,965,000				94,811,000				107,965,000	94,811,000			107,965,000			90,000,000		90,000,000
Fair value, paid in kind distributions										$ 19.67
Distribution made to member or limited partner, payment In kind declared										13,200,000
Fair value input, option value										3.32
Business Acquisition Fair Value Measurement Composition, Assumed Cost of Capital											9.25%
Business Acquisition Fair Value Measurement Composition, Inflationary Cost											2.50%
Effective income tax rate, continuing operations											35.00%
Effective income tax rate reconciliation, state and local income taxes, percent											6.50%
Loss on impairment of property, plant and equipment		99,900,000				3,000,000		15,200,000	100,000	99,892,000	18,155,000	0
Property plant and equipment gross		698,017,000				407,800,000				698,017,000	407,800,000			698,017,000
Series B
Business Acquisition [Line Items]
Issuance of common units, net of offering costs										(30,000,000)	0	0
Limited partners, units issued															1,168,225
Distributions										2,220,000	0	0
Chatom processing, gathering and fractionation plant [Member]
Business Acquisition [Line Items]
Acquired interest (percent)						4.80%					4.80%											87.40%
Revenues												25,400,000
Operating Income (Loss)												1,800,000
Total Consideration																						51,377,000
Chatom Assets location											15
Refrigeration processing plant											25
Fractation unit											1,900
Long-ton per day sulfur recovery											160
Gas gathering system											24
Percent of outstanding noncontrolling interest acquired																						38.00%
Costar Midstream, L.L.C. [Member]
Business Acquisition [Line Items]
Acquired interest (percent)													100.00%
Cash													265,383,000
Equity interests issued (in units)													6,900,000
Limited partner common units													147,296,000
Working capital, accounts receivable													11,200,000
Revenues														19,900,000
Operating Income (Loss)														300,000
Transaction costs		500,000								500,000				500,000
Total fair value of consideration													412,679,000
Lavaca [Member]
Business Acquisition [Line Items]
Preliminary purchase price allocation adjustment		23,600,000								23,600,000				23,600,000
Finite Lived Intangible Assets Accumulated Amortization Adjustment																500,000
Cash													104,409,000
Discount rate										10.50%
Revenues										16,800,000
Operating Income (Loss)										7,600,000
Transaction costs		100,000								100,000				100,000
Length Of Pipeline															100
High Point [Member]
Business Acquisition [Line Items]
Acquired interest (percent)																	100.00%		100.00%
Total identifiable net assets																	61,930,000		61,930,000
Revenues							30,400,000
Net income (loss)							7,200,000
Length Of Pipeline										700
Total Consideration for Issuance of Preferred Units																	15,000,000		15,000,000
Williams [Member]
Business Acquisition [Line Items]
Total Consideration						6,500,000					6,500,000
Minimum [Member]
Business Acquisition [Line Items]
Useful life										0 years 5 months 0 days
Minimum [Member] \| Costar Midstream, L.L.C. [Member]
Business Acquisition [Line Items]
Discount rate													11.00%
Maximum [Member]
Business Acquisition [Line Items]
Useful life										30 years
Maximum [Member] \| Costar Midstream, L.L.C. [Member]
Business Acquisition [Line Items]
Discount rate													16.00%
Total Partners Capital
Business Acquisition [Line Items]
Partners' Capital Account, Distributions to Existing Interest											15,612,000						(15,600,000)
Net income (loss)										(98,020,000)	(34,039,000)	(6,508,000)
Issuance of common units, net of offering costs											54,853,000
Distributions										42,063,000	22,251,000	16,070,000
Total Partners Capital \| Series B
Business Acquisition [Line Items]
Issuance of Series B Units										32,220,000
Series B
Business Acquisition [Line Items]
Issuance of common units, net of offering costs										0
Series B \| Series B
Business Acquisition [Line Items]
Issuance of Series B Units										32,220,000					30,000,000
Equity Method Investments [Member]
Business Acquisition [Line Items]
Ownership percentage		66.70%	66.70%							66.70%				66.70%		66.70%
Payments to acquire equity method investments																12,000,000
Terminals [Member]
Business Acquisition [Line Items]
Revenues							9,800,000			15,504,000
Operating Income (Loss)							800,000
Million barrels of storage capacity																		1,300,000
ArcLight [Member] \| High Point [Member]
Business Acquisition [Line Items]
Number of natural gas collection receipt points										75
Blackwater [Member]
Business Acquisition [Line Items]
Limited partner common units											3,100,000
Total identifiable net assets																	22,700,000		22,700,000
Total fair value of consideration																		63,900,000
Distributions										0	27,650,000	0
Units issued in business acquisition																		125,500
Series A
Business Acquisition [Line Items]
Discount rate																	18.00%
Distribution made to member or limited partner, distributions paid, conversion price per unit																	$ 17.50
Distribution growth rate										1.00%
Issuance of Preferred Units [Member] \| High Point [Member] \| Series A
Business Acquisition [Line Items]
Contributed capital																	5,142,857		5,142,857
Transaction expenses																			2,500,000
Revolving Credit Facility [Member] \| Fourth Amendment [Member] \| Series A
Business Acquisition [Line Items]
Payments on long-term debt																	12,500,000
AIM Midstream Holdings [Member] \| High Point [Member] \| Partnership Interest [Member]
Business Acquisition [Line Items]
Partnership cancellation of subordinated units (percent)																	90.00%
Madison [Member]
Business Acquisition [Line Items]
Proceeds from sale of property, plant, and equipment			6,100,000
Loss on impairment of property, plant and equipment											3,000,000
Property plant and equipment gross						$ 6,100,000					$ 6,100,000