Annual report pursuant to Section 13 and 15(d)

Stock Compensation (Schedule Of Changes In Number Of Outstanding Stock Options Under Director Plan And Stock Plan) (Details)

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Stock Compensation (Schedule Of Changes In Number Of Outstanding Stock Options Under Director Plan And Stock Plan) (Details) (USD $)
 12 Months Ended
Dec. 31, 2012
Dec. 31, 2011
Dec. 31, 2010
Dec. 31, 2009
Stock Compensation [Abstract]        
Options, Outstanding 236,820 162,000 189,000  
Options, Awarded 92,223 96,250 18,000  
Options, Exercised (12,000) (9,000) (21,000)  
Options, Forfeited (5,890) (12,430) (24,000)  
Options, Outstanding 311,153 236,820 162,000 189,000
Options, Exercisable at December 31, 2012 180,185      
Options, Expected to vest at December 31, 2012 308,405      
Weighted average exercise price per share, Outstanding $ 11.35 $ 9.49 $ 9.77  
Weighted average exercise price per share, Awarded $ 13.10 $ 14.16 $ 11.82  
Weighted average exercise price per share, Exercised $ 7.13 $ 8.10 $ 8.70  
Weighted average exercise price per share, Forfeited $ 10.58 $ 11.23 $ 14.13  
Weighted average exercise price per share, Outstanding $ 12.05 $ 11.35 $ 9.49 $ 9.77
Weighted average exercise price per share, Exercisable at December 31, 2012 $ 11.05      
Weighted average exercise price per share, Expected to vest at December 31, 2012 $ 12.03      
Options, Outstanding - Weighted average remaining contractual term 4 years 11 months 27 days 5 years 2 months 5 days 5 years 3 months 29 days 4 years 9 months
Options, Excercisable at December 31, 2012 - Weighted average remaining contractual term 4 years 3 months 29 days      
Options, Expected to vest December 31, 2012 - Weighted average remaining contractual term 4 years 11 months 23 days