Debt (Schedule of Debt Maturities) (Details) (USD $) In Thousands, unless otherwise specified	Mar. 31, 2014	Dec. 31, 2013
Long-term Debt, Gross, Fiscal Year Maturity [Abstract]
2014	$ 5,841
2015	14,503
2016	14,503
2017	14,503
2018	14,503
2019	1,377,825
2020	490,000
Long-term debt	$ 1,931,678	$ 1,545,340

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Long-term Debt, Gross, Maturities, Repayments of Principal in Year Five

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- Definition

Long-term Debt, Gross, Maturities, Repayments of Principal in Year Four

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- Definition

Long-term Debt, Gross, Maturities, Repayments of Principal in Year Seven

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- Definition

Long-term Debt, Gross, Maturities, Repayments of Principal in Year Six

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Long-term Debt, Gross, Maturities, Repayments of Principal in Year Three

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Long-term Debt, Gross, Maturities, Repayments of Principal in Year Two

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Long-term Debt, Gross, Maturities, Repayments of Principal, Remainder of Fiscal Year

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No definition available.

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- Definition

Amount of long-term debt before deduction of unamortized discount or premium. Includes, but is not limited to, notes payable, bonds payable, commercial loans, mortgage loans, convertible debt, subordinated debt and other types of debt, with initial maturities beyond one year or the normal operating cycle, if longer.

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

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 02

-Paragraph 20

-Article 5

Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 02

-Paragraph 22

-Article 5

Reference 3: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 210

-SubTopic 10

-Section S99

-Paragraph 1

-Subparagraph (SX 210.5-02.22)

-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

Reference 4: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 03

-Paragraph 16

-Article 9

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