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Equity-Based Compensation (Tables)
3 Months Ended
Mar. 31, 2014
Equity-Based Compensation [Abstract]  
Schedule Of Number Of Awards And Weighted Average Grant Date Fair Value
  2014 2013
    Weighted   Weighted
    Average   Average
  Number of Grant Date Number of Grant Date
Awards Awards Fair Value Awards Fair Value
Restricted stock units 88,755 $ 18.42 72,165 $ 16.50
Schedule Of Compensation Expense Recognized From Change In Fair Value And Vesting Of Performance Stock Units
    2014   2013
Performance stock unit compensation expense $ 1,137 $ 1,501