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Income Taxes (Schedule Of Income Tax Assets And Liabilities Financial Position) (Details) (USD $) In Thousands, unless otherwise specified	Dec. 31, 2012	Dec. 31, 2011
Income Tax Disclosure [Abstract]
Current deferred tax asset	$ 25,139	$ 25,805
Non-current deferred tax liability	232,531	243,000
Net deferred tax liability	$ 207,392	$ 217,195

Amount after allocation of valuation allowances of deferred tax asset attributable to deductible temporary differences and carryforwards expected to be realized or consumed within one year or operating cycle, if longer.

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- Definition

Amount of deferred tax liability attributable to taxable temporary differences, net of deferred tax asset attributable to deductible temporary differences and carryforwards net of valuation allowances expected to be realized or consumed after one year (or the normal operating cycle, if longer).

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