Annual report pursuant to Section 13 and 15(d)

Fair Value Measurements (Tables)

v2.4.0.6
Fair Value Measurements (Tables)
12 Months Ended
Dec. 31, 2011
Fair Value Measurements [Abstract]  
Schedule Of Fair Value Of Derivatives Financial Instruments And Long-Term Senior Notes
            December 31,  
            2011      2010  
     Hierarchy      Assets      Liabilities      Assets      Liabilities  

Derivatives

     Level 2       $ 4,087       $ 7,199       $ —         $ 14,882   

Senior Notes

     Level 2         —           612,000         —           441,000   

Revolving bank credit facility

     Level 2         —           117,000         —           —