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Debt and Other Long-Term Liabilities (Schedule Of Interest Expense) (Details) (USD $)
In Thousands, unless otherwise specified
 3 Months Ended
Mar. 31, 2015
Mar. 31, 2014
Long-term Debt, Unclassified [Abstract]    
Cash interest expense $ 11,395us-gaap_InterestExpenseDebt $ 8,362us-gaap_InterestExpenseDebt
Non-cash interest expense:    
Amortization of debt discount 435us-gaap_AmortizationOfDebtDiscountPremium 802us-gaap_AmortizationOfDebtDiscountPremium
Amortization of deferred financing fees 258us-gaap_AmortizationOfFinancingCosts 504us-gaap_AmortizationOfFinancingCosts
Total non-cash interest expense 693us-gaap_InterestAndDebtExpense 1,306us-gaap_InterestAndDebtExpense
Total interest expense $ 12,088us-gaap_InterestExpense $ 9,668us-gaap_InterestExpense