Supplemental Guarantor and Non-Guarantor Financial Information (Cash Flow) (Details) - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2015	Sep. 30, 2014
Supplemental guarantor and non-guarantor financial information
Cash flows provided by (used in) operating activities	$ (216,990)	$ (20,786)
INVESTING ACTIVITIES
Additions to property, plant and equipment	(61,329)	(69,733)
Proceeds from sale of property, plant and equipment	1,776	24,112
Intercompany loans made		0
Intercompany loans received		0
Other	364	134
Cash flows used in investing activities	(59,189)	(45,487)
FINANCING ACTIVITIES
Proceeds from issuance of debt	0	869,800
Retirements of debt	(8,486)	(418,321)
Dividends paid	0	(1,944)
Debt issuance costs	0	(27,748)
Advances from (to) consolidated entities	0	0
Intercompany notes borrowings		0
Intercompany notes payments		0
Other	(60)	(195)
Cash flows provided by (used in) financing activities	(8,546)	421,592
Effect of foreign exchange rates on cash	(1,697)	(1,514)
Net increase (decrease) in cash and cash equivalents	(286,422)	353,805
Cash and cash equivalents at beginning of period	468,532	260,818
Cash and cash equivalents at end of period	182,110	614,623
Reportable legal entities | Parent (Issuer)
Supplemental guarantor and non-guarantor financial information
Cash flows provided by (used in) operating activities	55,538	(124,771)
INVESTING ACTIVITIES
Additions to property, plant and equipment	(699)	(2,758)
Proceeds from sale of property, plant and equipment	0	0
Intercompany loans made		(5,200)
Intercompany loans received		1,828
Other	0	0
Cash flows used in investing activities	(699)	(6,130)
FINANCING ACTIVITIES
Proceeds from issuance of debt		869,800
Retirements of debt	0	(406,566)
Dividends paid		(1,944)
Debt issuance costs		(27,748)
Advances from (to) consolidated entities	(334,182)	30,043
Intercompany notes borrowings		0
Intercompany notes payments		0
Other	(60)	(195)
Cash flows provided by (used in) financing activities	(334,242)	463,390
Effect of foreign exchange rates on cash	0	0
Net increase (decrease) in cash and cash equivalents	(279,403)	332,489
Cash and cash equivalents at beginning of period	421,533	234,150
Cash and cash equivalents at end of period	142,130	566,639
Reportable legal entities | Guarantor Subsidiaries
Supplemental guarantor and non-guarantor financial information
Cash flows provided by (used in) operating activities	(254,568)	116,284
INVESTING ACTIVITIES
Additions to property, plant and equipment	(57,295)	(60,853)
Proceeds from sale of property, plant and equipment	1,575	24,112
Intercompany loans made		0
Intercompany loans received		0
Other	0	0
Cash flows used in investing activities	(55,720)	(36,741)
FINANCING ACTIVITIES
Proceeds from issuance of debt		0
Retirements of debt	(4,150)	(5,894)
Dividends paid		0
Debt issuance costs		0
Advances from (to) consolidated entities	317,842	(73,617)
Intercompany notes borrowings		0
Intercompany notes payments		0
Other	0	0
Cash flows provided by (used in) financing activities	313,692	(79,511)
Effect of foreign exchange rates on cash	0	0
Net increase (decrease) in cash and cash equivalents	3,404	32
Cash and cash equivalents at beginning of period	1,117	1,620
Cash and cash equivalents at end of period	4,521	1,652
Reportable legal entities | Non-Guarantor Subsidiaries
Supplemental guarantor and non-guarantor financial information
Cash flows provided by (used in) operating activities	(17,960)	(12,299)
INVESTING ACTIVITIES
Additions to property, plant and equipment	(3,335)	(6,122)
Proceeds from sale of property, plant and equipment	201	0
Intercompany loans made		0
Intercompany loans received		0
Other	364	134
Cash flows used in investing activities	(2,770)	(5,988)
FINANCING ACTIVITIES
Proceeds from issuance of debt		0
Retirements of debt	(4,336)	(5,861)
Dividends paid		0
Debt issuance costs		0
Advances from (to) consolidated entities	16,340	43,574
Intercompany notes borrowings		5,200
Intercompany notes payments		(1,828)
Other	0	0
Cash flows provided by (used in) financing activities	12,004	41,085
Effect of foreign exchange rates on cash	(1,697)	(1,514)
Net increase (decrease) in cash and cash equivalents	(10,423)	21,284
Cash and cash equivalents at beginning of period	45,882	25,048
Cash and cash equivalents at end of period	35,459	46,332
Eliminations
Supplemental guarantor and non-guarantor financial information
Cash flows provided by (used in) operating activities	0	0
INVESTING ACTIVITIES
Additions to property, plant and equipment	0	0
Proceeds from sale of property, plant and equipment	0	0
Intercompany loans made		5,200
Intercompany loans received		(1,828)
Other	0	0
Cash flows used in investing activities	0	3,372
FINANCING ACTIVITIES
Proceeds from issuance of debt		0
Retirements of debt	0	0
Dividends paid		0
Debt issuance costs		0
Advances from (to) consolidated entities	0	0
Intercompany notes borrowings		(5,200)
Intercompany notes payments		1,828
Other	0	0
Cash flows provided by (used in) financing activities	0	(3,372)
Effect of foreign exchange rates on cash	0	0
Net 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