Income Taxes (Unrecognized Tax Benefits) (Details) (USD $)	12 Months Ended
Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Income Tax Disclosure [Abstract]
Unrecognized Tax Benefits, Income Tax Penalties and Interest Expense	$ 600,000	$ 800,000	$ 600,000
Reconciliation of Unrecognized Tax Benefits, Excluding Amounts Pertaining to Examined Tax Returns [Roll Forward]
Unrecognized Tax Benefits - Opening Balance	55,325,000us-gaap_UnrecognizedTaxBenefits	52,654,000us-gaap_UnrecognizedTaxBenefits	19,302,000us-gaap_UnrecognizedTaxBenefits
Gross increases - tax positions in prior period	2,950,000	0	33,787,000
Gross decreases - tax positions in prior period	(22,698,000)	0	(21,000)
Gross increases - current-period tax positions	651,000	2,671,000	0
Settlements with taxing authorities	(565,000)	0	(163,000)
Expiration of the statute of limitations for the assessment of taxes	0	0	(251,000)
Unrecognized Tax Benefits - Ending Balance	$ 35,663,000us-gaap_UnrecognizedTaxBenefits	$ 55,325,000us-gaap_UnrecognizedTaxBenefits	$ 52,654,000us-gaap_UnrecognizedTaxBenefits

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- Definition

Amount of unrecognized tax benefits pertaining to uncertain tax positions taken in tax returns.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Glossary Unrecognized Tax Benefit

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Amount of decrease in unrecognized tax benefits resulting from tax positions taken in prior period tax returns.

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Amount of decrease in unrecognized tax benefits resulting from settlements with taxing authorities.

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Amount of expense for interest on an underpayment of income taxes and penalties related to a tax position claimed or expected to be claimed in the tax return.

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Amount of increase in unrecognized tax benefits resulting from tax positions that have been or will be taken in current period tax return.

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Amount of increase in unrecognized tax benefits resulting from tax positions taken in prior period tax returns.

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Amount of decrease in unrecognized tax benefits resulting from lapses of applicable statutes of limitations.

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