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Stock Option Plan (Information About Stock Options Outstanding) (Details) (USD $)
12 Months Ended
Dec. 31, 2013
Dec. 31, 2012
Dec. 31, 2011
Dec. 31, 2010
Sep. 30, 2001
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]          
Number Outstanding And Exercisable 284,729 371,866 461,773 771,344  
Weighted Average Remaining Contractual Life 2 years 5 months 16 days        
Weighted Average Exercise $ 11.02 $ 10.43 $ 10.08 $ 8.81  
Options authorized         1,287,000
Minimum excercise price of options as a percentage of fair market value 100.00%        
9.44 [Member]
         
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]          
Exercise Price $ 9.44        
Number Outstanding And Exercisable 70,618        
Weighted Average Remaining Contractual Life 1 year 11 months 1 day        
11.54 [Member]
         
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]          
Exercise Price $ 11.54        
Number Outstanding And Exercisable 214,111        
Weighted Average Remaining Contractual Life 2 years 11 months 19 days