Long-Term Debt (Schedule Of Long-Term Debt Instruments) (Details) (USD $) In Thousands, unless otherwise specified	Jun. 30, 2014	Dec. 31, 2013
Debt Instrument [Line Items]
Long-term Debt	$ 1,791,842	$ 1,984,144
Deferred Gain (Loss) on Discontinuation of Interest Rate Fair Value Hedge	3,802	4,802
Long-term Debt, Excluding Current Maturities	1,795,644	1,988,946
Combined Credit Agreements [Member]
Debt Instrument [Line Items]
Line of Credit Facility, Amount Outstanding	34,676	211,200
Senior Secured Second Lien Credit Facility [Member]
Debt Instrument [Line Items]
Secured Long-term Debt, Noncurrent	608,882	607,572
Senior Secured Second Lien Term Loan Due 2019 [Member]
Debt Instrument [Line Items]
Secured Long-term Debt, Noncurrent	194,842	194,423
Senior Notes Due 2015 [Member]
Debt Instrument [Line Items]
Senior Notes	0	10,472
Senior Notes Due 2016 [Member]
Debt Instrument [Line Items]
Senior Notes	0	8,044
Senior Notes Due 2019 [Member]
Debt Instrument [Line Items]
Senior Notes	293,573	293,243
Senior Notes Due 2021 [Member]
Debt Instrument [Line Items]
Senior Notes	309,869	309,190
Senior Subordinated Notes [Member]
Debt Instrument [Line Items]
Subordinated Long-term Debt, Noncurrent	$ 350,000	$ 350,000

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Amount as of the balance sheet date of the unamortized adjustment to the carrying value of an interest-bearing hedged item made under an effective interest rate fair value hedge that is amortized upon discontinuation of the interest rate fair value hedge.

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-Publisher FASB

-Name Accounting Standards Codification

-Topic 815

-SubTopic 25

-Section 35

-Paragraph 9

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- Definition

Amount borrowed under the credit facility as of the balance sheet date.

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-Name Regulation S-X (SX)

-Number 210

-Section 02

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- Definition

Carrying amount of long-term debt, net of unamortized discount or premium, including current and noncurrent amounts. Includes, but not limited to, notes payable, bonds payable, debentures, mortgage loans and commercial paper. Excludes capital lease obligations.

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Carrying amount of long-term debt, net of unamortized discount or premium, excluding amounts to be repaid within one year or the normal operating cycle, if longer (current maturities). Includes, but not limited to, notes payable, bonds payable, debentures, mortgage loans and commercial paper. Excludes capital lease obligations.

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Carrying amount of collateralized debt obligations with maturities initially due after one year or beyond the operating cycle, if longer, excluding the current portion. Obligations include, but not limited to, mortgage loans, chattel loans, and other borrowings secured by assets.

+ References

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Including the current and noncurrent portions, carrying value as of the balance sheet date of Notes with the highest claim on the assets of the issuer in case of bankruptcy or liquidation (with maturities initially due after one year or beyond the operating cycle if longer). Senior note holders are paid off in full before any payments are made to junior note holders.

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- Definition

Carrying value as of the balance sheet date of collateralized/uncollateralized debt obligation (with maturities initially due after one year or beyond the operating cycle if longer), excluding current portion. Subordinated debt places a lender in a lien position behind the primary lender of the company.

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