Quarterly report pursuant to Section 13 or 15(d)

Long-Term Debt (Schedule Of Long-Term Debt) (Details)

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Long-Term Debt (Schedule Of Long-Term Debt) (Details) (USD $)
In Thousands, unless otherwise specified
6 Months Ended
Jun. 30, 2012
Jun. 30, 2011
Dec. 31, 2011
Debt Disclosure [Abstract]      
Senior notes $ 227,143   $ 262,857
Revolving credit facility 34,030   0
Capitalized lease and other obligations 6,770   6,328
Total long-term debt 267,943   269,185
Less: Current maturities (39,796)   (39,354)
Total maturities due after one year 228,147   229,831
Debt Instrument [Line Items]      
Proceeds From (Repayments Of) Line Of Credit $ 34,030 $ (66,230)