Supplemental Guarantor Financial Information Supplemental Guarantor Financial Information (Details 3) - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2015	Sep. 30, 2014
Condensed Cash Flow Statements, Captions [Line Items]
Net cash provided by operating activities	$ 63,542	$ 31,341
Investing activities:
Purchases of property, plant, and equipment, net	(75,998)	(28,820)
Acquisition of CSI, net of cash acquired	0	(825,000)
Intercompany investment activity	0	0
Advances and other investing activities	(66)	(823)
Net cash used in investing activities	(76,064)	(854,643)
Financing activities:
Proceeds from long-term debt, net	53,109	572,778
Payments of long-term debt	(5,000)	(93,584)
Proceeds from issuance of partnership common units, net	0	391,798
Distributions	(50,956)	(21,447)
Payment of financing costs	0	(22,485)
Intercompany contribution (distribution)	0	0
Intercompany loan activity		0
Contribution from general partner	0	8,405
Net cash used in financing activities	(2,847)	835,465
Effect of exchange rate changes on cash	(392)	(493)
Increase (decrease) in cash and cash equivalents	(15,761)	11,670
Cash and cash equivalents at beginning of period	34,066	9,477
Cash and cash equivalents at end of period	18,305	21,147
Issuers [Member]
Condensed Cash Flow Statements, Captions [Line Items]
Net cash provided by operating activities	0	15,387
Investing activities:
Purchases of property, plant, and equipment, net	0	0
Acquisition of CSI, net of cash acquired		0
Intercompany investment activity	50,956	(378,756)
Advances and other investing activities	0	0
Net cash used in investing activities	50,956	(378,756)
Financing activities:
Proceeds from long-term debt, net	0	344,778
Payments of long-term debt	0	0
Proceeds from issuance of partnership common units, net		391,798
Distributions	(50,956)	(21,447)
Payment of financing costs		10,165
Intercompany contribution (distribution)	0	0
Intercompany loan activity		(350,000)
Contribution from general partner		8,405
Net cash used in financing activities	(50,956)	363,369
Effect of exchange rate changes on cash	0	0
Increase (decrease) in cash and cash equivalents	0	0
Cash and cash equivalents at beginning of period	0	0
Cash and cash equivalents at end of period	0	0
Guarantor Subsidiaries [Member]
Condensed Cash Flow Statements, Captions [Line Items]
Net cash provided by operating activities	53,846	15,057
Investing activities:
Purchases of property, plant, and equipment, net	(64,472)	(26,095)
Acquisition of CSI, net of cash acquired		825,000
Intercompany investment activity	0	(2,634)
Advances and other investing activities	(66)	(823)
Net cash used in investing activities	(64,538)	(854,552)
Financing activities:
Proceeds from long-term debt, net	53,109	228,000
Payments of long-term debt	5,000	93,584
Proceeds from issuance of partnership common units, net		0
Distributions	0	0
Payment of financing costs		12,320
Intercompany contribution (distribution)	(50,956)	378,756
Intercompany loan activity		350,000
Contribution from general partner		0
Net cash used in financing activities	(2,847)	850,852
Effect of exchange rate changes on cash	0	0
Increase (decrease) in cash and cash equivalents	(13,539)	11,357
Cash and cash equivalents at beginning of period	23,342	4,339
Cash and cash equivalents at end of period	9,803	15,696
Other Subsidiaries [Member]
Condensed Cash Flow Statements, Captions [Line Items]
Net cash provided by operating activities	9,696	897
Investing activities:
Purchases of property, plant, and equipment, net	(11,526)	(2,725)
Acquisition of CSI, net of cash acquired		0
Intercompany investment activity	0	0
Advances and other investing activities	0	0
Net cash used in investing activities	(11,526)	(2,725)
Financing activities:
Proceeds from long-term debt, net	0	0
Payments of long-term debt	0	0
Proceeds from issuance of partnership common units, net		0
Distributions	0	0
Payment of financing costs		0
Intercompany contribution (distribution)	0	2,634
Intercompany loan activity		0
Contribution from general partner		0
Net cash used in financing activities	0	2,634
Effect of exchange rate changes on cash	(392)	(493)
Increase (decrease) in cash and cash equivalents	(2,222)	313
Cash and cash equivalents at beginning of period	10,724	5,138
Cash and cash equivalents at end of period	8,502	5,451
Eliminations [Member]
Condensed Cash Flow Statements, Captions [Line Items]
Net cash provided by operating activities	0	0
Investing activities:
Purchases of property, plant, and equipment, net	0	0
Acquisition of CSI, net of cash acquired		0
Intercompany investment activity	(50,956)	381,390
Advances and other investing activities	0	0
Net cash used in investing activities	(50,956)	381,390
Financing activities:
Proceeds from long-term debt, net	0	0
Payments of long-term debt	0	0
Proceeds from issuance of partnership common units, net		0
Distributions	0	0
Payment of financing costs		0
Intercompany contribution (distribution)	50,956	(381,390)
Intercompany loan activity		0
Contribution from general partner		0
Net cash used in financing activities	50,956	(381,390)
Effect of exchange rate changes on cash	0	0
Increase (decrease) in cash and cash equivalents	0	0
Cash and cash equivalents at beginning of period	0	0
Cash and cash equivalents at end of period	$ 0	$ 0