Quarterly report pursuant to Section 13 or 15(d)

Fair Value Measurements (Details)

v2.4.0.6
Fair Value Measurements (Details) (USD $)
In Thousands, unless otherwise specified
3 Months Ended
Mar. 31, 2012
Mar. 31, 2011
Dec. 31, 2011
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis, Valuation Techniques [Line Items]      
Senior Notes, Carrying Value $ 240,000 $ 240,000 $ 240,000
Senior Notes, Fair Value 260,712 270,600 264,000
Term Loan, Carrying Value    69,841   
Term Loan, Fair Value    69,841   
Change during period, assets at fair value 0 0  
Level 1 [Member]
     
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis, Valuation Techniques [Line Items]      
Senior Notes, Fair Value 260,712 270,600 264,000
Term Loan, Fair Value        
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         
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