Annual report pursuant to Section 13 and 15(d)

Fair Value (Fair Value Of Assets And Liabilities) (Details)

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Fair Value (Fair Value Of Assets And Liabilities) (Details) (USD $)
In Thousands, unless otherwise specified
Dec. 31, 2011
Dec. 31, 2010
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis, Valuation Techniques [Line Items]    
Senior Notes, Carrying Value $ 240,000 $ 240,000
Senior Notes, Fair Value 264,000 273,900
Term Loan, Carrying Value    69,841
Term Loan, Fair Value    69,841
Fair Value, Inputs, Level 1 [Member]
   
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis, Valuation Techniques [Line Items]    
Senior Notes, Fair Value 264,000 273,900
Term Loan, Fair Value      
Fair Value, Inputs, Level 2 [Member]
   
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis, Valuation Techniques [Line Items]    
Senior Notes, Fair Value      
Term Loan, Fair Value      
Fair Value, Inputs, Level 3 [Member]
   
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis, Valuation Techniques [Line Items]    
Senior Notes, Fair Value     
Term Loan, Fair Value    $ 69,841