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Income Taxes (Details 2) (USD $) In Thousands, unless otherwise specified	3 Months Ended								12 Months Ended
	Dec. 31, 2014	Sep. 30, 2014	Jun. 30, 2014	Mar. 31, 2014	Dec. 31, 2013	Sep. 30, 2013	Jun. 30, 2013	Mar. 31, 2013	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Income Tax Expense (Benefit), Continuing Operations, by Jurisdiction [Abstract]
Deferred income tax provision (benefit)									$ 36,148us-gaap_DeferredIncomeTaxExpenseBenefit	$ (36,274)us-gaap_DeferredIncomeTaxExpenseBenefit	$ (11,818)us-gaap_DeferredIncomeTaxExpenseBenefit
Provision (benefit) for income taxes	12,569us-gaap_IncomeTaxExpenseBenefit	24,090us-gaap_IncomeTaxExpenseBenefit	(6,672)us-gaap_IncomeTaxExpenseBenefit	16,526us-gaap_IncomeTaxExpenseBenefit	24,051us-gaap_IncomeTaxExpenseBenefit	3,413us-gaap_IncomeTaxExpenseBenefit	9,288us-gaap_IncomeTaxExpenseBenefit	(54,006)us-gaap_IncomeTaxExpenseBenefit	46,513us-gaap_IncomeTaxExpenseBenefit	(17,254)us-gaap_IncomeTaxExpenseBenefit	(2,078)us-gaap_IncomeTaxExpenseBenefit
Continuing Operations [Member]
Income Tax Expense (Benefit), Continuing Operations, by Jurisdiction [Abstract]
Foreign									10,430	15,546	9,662
U.S. federal									(195)	2,067	0
U.S. state									132	1,435	74
Current income tax provision (benefit)									10,367	19,048	9,736
Foreign									2,024	(10,222)	(12,070)
U.S. federal									30,074	(23,756)	222
U.S. state									4,048	(2,324)	34
Deferred income tax provision (benefit)									36,146	(36,302)	(11,814)
Provision (benefit) for income taxes									$ 46,513	$ (17,254)	$ (2,078)