Supplemental Condensed Consolidating Financial Information (Details 2) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2015	Jun. 30, 2014	Jun. 30, 2015	Jun. 30, 2014
Condensed Consolidating Statements of Operations
Total revenue	$ 459,628	$ 518,366	$ 926,958	$ 1,030,842
Operating expenses:
Purchased product costs	125,547	227,788	253,571	431,554
Facility expenses	88,641	85,590	180,457	169,027
Selling, general and administrative expenses	34,971	27,701	69,606	62,991
Depreciation and amortization	137,505	120,043	272,923	237,950
Other operating expenses (income)	2,611	1,618	1,993	1,693
Impairment expense			25,523
Total operating expenses	389,275	462,740	804,073	903,215
Income from operations	70,353	55,626	122,885	127,627
Loss on redemption of debt	(117,860)		(117,860)
Other expense, net	(50,341)	(45,518)	(101,473)	(89,057)
(Loss) income before provision for income tax	(97,848)	10,108	(96,448)	38,570
Provision for income tax expense (benefit)	(11,456)	(2,940)	(15,577)	9,606
Net (loss) income	(86,392)	13,048	(80,871)	28,964
Net loss attributable to non-controlling interest	(15,094)	(4,071)	(29,698)	(7,495)
Net (loss) income attributable to the Partnership's unitholders	(101,486)	8,977	(110,569)	21,469
Reportable legal entities | Parent
Operating expenses:
Selling, general and administrative expenses	14,013	10,760	27,545	24,415
Depreciation and amortization	393	288	717	568
Total operating expenses	14,406	11,048	28,262	24,983
Income from operations	(14,406)	(11,048)	(28,262)	(24,983)
Earnings from consolidated affiliates	73,192	54,074	123,460	121,784
Loss on redemption of debt	(117,860)		(117,860)
Other expense, net	(53,898)	(44,526)	(104,209)	(87,688)
(Loss) income before provision for income tax	(112,972)	(1,500)	(126,871)	9,113
Provision for income tax expense (benefit)	(3,740)	251	(3,575)	408
Net (loss) income	(109,232)	(1,751)	(123,296)	8,705
Net (loss) income attributable to the Partnership's unitholders	(109,232)	(1,751)	(123,296)	8,705
Reportable legal entities | Guarantor Subsidiaries
Condensed Consolidating Statements of Operations
Total revenue	232,588	318,408	473,913	643,909
Operating expenses:
Purchased product costs	120,299	180,638	241,630	345,821
Facility expenses	38,920	42,567	76,920	79,600
Selling, general and administrative expenses	13,715	7,795	29,499	18,311
Depreciation and amortization	51,470	49,719	102,414	98,839
Other operating expenses (income)	935	352	1,564	193
Impairment expense			25,523
Total operating expenses	225,339	281,071	477,550	542,764
Income from operations	7,249	37,337	(3,637)	101,145
Earnings from consolidated affiliates	63,113	18,928	125,581	41,317
Other expense, net	(4,887)	(5,382)	(10,486)	(11,480)
(Loss) income before provision for income tax	65,475	50,883	111,458	130,982
Provision for income tax expense (benefit)	(7,716)	(3,191)	(12,002)	9,198
Net (loss) income	73,191	54,074	123,460	121,784
Net (loss) income attributable to the Partnership's unitholders	73,191	54,074	123,460	121,784
Reportable legal entities | Non-Guarantor Subsidiaries
Condensed Consolidating Statements of Operations
Total revenue	231,920	209,800	463,847	408,918
Operating expenses:
Purchased product costs	5,248	47,150	11,941	85,733
Facility expenses	47,291	44,311	98,176	92,682
Selling, general and administrative expenses	10,860	12,416	20,605	25,765
Depreciation and amortization	86,712	71,409	171,934	141,222
Other operating expenses (income)	1,676	6,536	429	6,770
Total operating expenses	151,787	181,822	303,085	352,172
Income from operations	80,133	27,978	160,762	56,746
Other expense, net	(1,926)	(4,978)	(5,483)	(7,934)
(Loss) income before provision for income tax	78,207	23,000	155,279	48,812
Net (loss) income	78,207	23,000	155,279	48,812
Net (loss) income attributable to the Partnership's unitholders	78,207	23,000	155,279	48,812
Eliminations
Condensed Consolidating Statements of Operations
Total revenue	(4,880)	(9,842)	(10,802)	(21,985)
Operating expenses:
Facility expenses	2,430	(1,288)	5,361	(3,255)
Selling, general and administrative expenses	(3,617)	(3,270)	(8,043)	(5,500)
Depreciation and amortization	(1,070)	(1,373)	(2,142)	(2,679)
Other operating expenses (income)		(5,270)		(5,270)
Total operating expenses	(2,257)	(11,201)	(4,824)	(16,704)
Income from operations	(2,623)	1,359	(5,978)	(5,281)
Earnings from consolidated affiliates	(136,305)	(73,002)	(249,041)	(163,101)
Other expense, net	10,370	9,368	18,705	18,045
(Loss) income before provision for income tax	(128,558)	(62,275)	(236,314)	(150,337)
Net (loss) income	(128,558)	(62,275)	(236,314)	(150,337)
Net loss attributable to non-controlling interest	(15,094)	(4,071)	(29,698)	(7,495)
Net (loss) income attributable to the Partnership's unitholders	$ (143,652)	$ (66,346)	$ (266,012)	$ (157,832)