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Equity-Based Compensation (Tables)
12 Months Ended
Dec. 31, 2012
Equity-Based Compensation [Abstract]  
Schedule Of Number Of Awards And Weighted Average Grant Date Fair Value
  2012 2011 2010
 
    Weighted   Weighted   Weighted
    Average   Average   Average
  Number of Grant Date Number of Grant Date Number of Grant Date
Awards Awards Fair Value Awards Fair Value Awards Fair Value
Restricted stock units 151,452 $ 13.58 315,834 $ 11.05 169,867 $ 16.80
Restricted shares 11,130 $ 11.86 6,000 $ 13.63 6,000 $ 12.74
Non-qualified stock options $ 239,000 $ 5.19 131,000 $ 4.62
Summary Of Compensation Expense Connection With Awards
    2012   2011   2010
Expense recognized under terminated plans $ 18 $ 47 $ 47
Expense recognized under the Plan   3,130   4,595   4,268
Total stock compensation expense $ 3,148 $ 4,642 $ 4,315
 
Tax benefits recognized related to stock compensation expense $ 1,228 $ 1,764 $ 1,640
Schedule Of Weighted Average Assumptions Used To Value Stock Options Issued
      Expected Expected   Risk-free   Annual   Expected  
Year of     Life Stock   Interest   Forfeiture   Dividend  
Grant   Fair Value (in years) Volatility   Rate   Rate   Yield  
2011 $ 5.19 5.80 58.3 % 1.1 % 18.0 % 0.0 %
2010 $ 4.62 5.70 55.9 % 1.7 % 18.0 % 0.0 %
Schedule Of Compensation Expense Recognized From Change In Fair Value And Vesting Of Performance Stock Units
    2012   2011   2010
Performance stock unit compensation expense $ 1,639 $ 4,409 $ 2,310
Cash Paid To Settle Liability Awards
    2012   2011   2010
Share-based liabilities paid $ 542 $ 577 $ 353
Summary Of Ranges Of Outstanding And Exercisable Options
      Weighted Average   Weighted     Weighted
      Remaining   Average     Average
  Range of Options Contractual Life   Exercise Options   Exercise
  Exercise Prices Outstanding (in years)   Price Exercisable   Price
$ 8.90– $8.90 89,500 7.70 $ 8.90 40,500 $ 8.90
$ 9.74– $9.74 211,125 8.70 $ 9.74 48,750 $ 9.74
$ 11.89– $18.78 202,900 5.69 $ 15.31 179,612 $ 15.54
$ 20.52– $23.78 208,099 4.36 $ 22.57 208,099 $ 22.57
    711,624       476,961    
Summary Of Stock Options Transactions
          Weighted    
          Average    
        Weighted Remaining    
        Average Contractual    
        Exercise Life   Aggregate
  Options     Price (in years)   Intrinsic Value
Balance at January 1, 2010 630,889   $ 17.88      
Granted 131,000     8.90      
Exercised (28,586 )   9.46      
Forfeited (103,522 )   14.25      
Balance at December 31, 2010 629,781   $ 17.02      
Granted 239,000     9.74      
Exercised (3,375 )   9.97      
Forfeited (94,907 )   17.89      
Balance at December 31, 2011 770,499   $ 14.74      
Exercised (27,500 )   9.70      
Forfeited (31,375 )   13.76      
Balance at December 31, 2012 711,624   $ 14.97 6.45 $ 2,273,000
Aggregate Intrinsic Value Of Options Exercised And Aggregate Fair Value Of Restricted Stock Units And Restricted Shares That Vested
    2012   2011   2010
Aggregate intrinsic value of options exercised $ 115 $ 13 $ 128
Aggregate fair value of vested restricted stock units $ 2,760 $ 2,356 $ 3,040
Aggregate fair value of vested restricted shares $ 193 $ 155 $ 150
Summary Of Information About Restricted Stock Units And Weighted Average Grant Date Fair Value
        Weighted       Weighted
        Average       Average
  Restricted     Grant Date Restricted     Grant Date
  Stock Units     Fair Value Shares     Fair Value
Balance at January 1, 2012 628,591   $ 14.29 6,000   $ 15.52
Granted 151,452     13.58 11,130     11.86
Vested (196,155 )   13.18 (17,130 )   13.14
Forfeited (25,259 )   10.59    
Balance at December 31, 2012 558,629   $ 14.66   $