Quarterly report pursuant to Section 13 or 15(d)

Stock-Based Compensation (Schedule Of Changes In The Number Of Deferred Stock Shares Under The Stock Plan And Incentive Plan) (Details)

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Stock-Based Compensation (Schedule Of Changes In The Number Of Deferred Stock Shares Under The Stock Plan And Incentive Plan) (Details) (Deferred Stock [Member], USD $)
9 Months Ended
Sep. 30, 2012
Deferred Stock [Member]
 
Deferred Compensation Arrangement with Individual, Share-based Payments [Line Items]  
Shares, Outstanding - December 31, 2011 71,849
Shares, Granted 105,698
Shares, Vested   
Shares, Canceled (6,934)
Shares, Outstanding - September 30, 2012 170,613
Weighted Average Grant Date Fair Value, Outstanding - December 31, 2011 $ 15.14
Weighted Average Grant Date Fair Value, Granted $ 13.49
Weighted Average Grant Date Fair Value, Vested   
Weighted Average Grant Date Fair Value, Canceled $ 14.19
Weighted Average Grant Date Fair Value, Outstanding - September 30, 2012 $ 14.14