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Basis Of Presentation And Significant Accounting Policies (Schedule Of Anti-dilutive Securities Excluded From Computation Of Earnings Per Share) (Details) (Stock Options And Share Awards [Member])
In Thousands, unless otherwise specified
7 Months Ended 12 Months Ended
Dec. 31, 2010
Dec. 31, 2011
May 31, 2010
May 31, 2009
Stock Options And Share Awards [Member]
       
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]        
Shares subject to anti-dilutive stock options and share awards excluded from calculation 772 1,203 26 1,201