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Derivative Financial Instruments (Fair Value Of Interest Rate Swap Agreement) (Details) (USD $)
In Thousands, unless otherwise specified
7 Months Ended 12 Months Ended
Dec. 31, 2010
Dec. 31, 2011
May 31, 2010
May 31, 2009
Loss reclassified from OCI to interest expense $ 342 $ 2,024 $ 0 $ 0
Gain (loss) recognized in other income (expense) 0 0 0 0
Pre Tax [Member]
       
(Loss) gain recognized in OCI 2,003 (3,757) 0 0
Tax Portion [Member]
       
(Loss) gain recognized in OCI (776) 1,463 0 0
Net Of Tax [Member]
       
(Loss) gain recognized in OCI $ 1,227 $ (2,294) $ 0 $ 0