Income Taxes (Schedule of Income Taxes) (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended
Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Income Tax Disclosure [Abstract]
United States (U.S.)	$ 44,128us-gaap_CurrentFederalTaxExpenseBenefit	$ 17,861us-gaap_CurrentFederalTaxExpenseBenefit	$ 22,239us-gaap_CurrentFederalTaxExpenseBenefit
State	(2,193)	220	245
Foreign	12,763us-gaap_CurrentForeignTaxExpenseBenefit	9,101us-gaap_CurrentForeignTaxExpenseBenefit	3,802us-gaap_CurrentForeignTaxExpenseBenefit
Current tax expense	54,698us-gaap_CurrentIncomeTaxExpenseBenefit	27,182us-gaap_CurrentIncomeTaxExpenseBenefit	26,286us-gaap_CurrentIncomeTaxExpenseBenefit
U.S.	(3,047)	3,961	8,824
State	0	0	0
Foreign	(282)	(380)	0
Deferred income tax (benefit) expense	(3,329)us-gaap_DeferredIncomeTaxExpenseBenefit	3,581us-gaap_DeferredIncomeTaxExpenseBenefit	8,824us-gaap_DeferredIncomeTaxExpenseBenefit
Income tax expense	$ 51,369us-gaap_IncomeTaxExpenseBenefit	$ 30,763us-gaap_IncomeTaxExpenseBenefit	$ 35,110us-gaap_IncomeTaxExpenseBenefit

Amount of current federal tax expense (benefit) pertaining to income (loss) from continuing operations.

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