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Note D - Stock Based Compensation (Details) (USD $)
3 Months Ended 9 Months Ended
Sep. 30, 2013
Sep. 30, 2012
Sep. 30, 2013
Sep. 30, 2012
Note D - Stock Based Compensation (Details) [Line Items]        
Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Authorized (in Shares) 750,000   750,000  
Share-based Compensation Arrangement by Share-based Payment Award, Shares Issued in Period (in Shares)     35,000  
Share Price (in Dollars per share) $ 17.49   $ 17.49  
Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Available for Grant (in Shares) 366,000   366,000  
Share-based Compensation Arrangement by Share-based Payment Award, Options, Vested in Period, Fair Value     $ 180,000 $ 204,000
Allocated Share-based Compensation Expense 39,000 49,000 315,000 303,000
Share-based Compensation Arrangement by Share-based Payment Award Accelerated Compensation Cost     180,000 199,000
Allocated Share-based Compensation Expense, Impact on Earnings Per Share       (0.02)
Employee Service Share-based Compensation, Nonvested Awards, Compensation Cost Not yet Recognized 419,000 798,000 419,000 798,000
Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Weighted Average Grant Date Fair Value (in Dollars per share)     $ 5.13 $ 5.96
Employee Service Share-based Compensation, Cash Received from Exercise of Stock Options     19,000 55,000
Diluted [Member]
       
Note D - Stock Based Compensation (Details) [Line Items]        
Allocated Share-based Compensation Expense, Impact on Earnings Per Share     (0.02)  
Basic [Member]
       
Note D - Stock Based Compensation (Details) [Line Items]        
Allocated Share-based Compensation Expense, Impact on Earnings Per Share     (0.03)  
Employee Stock Option [Member]
       
Note D - Stock Based Compensation (Details) [Line Items]        
Share Price (in Dollars per share) $ 10.44   $ 10.44  
Increase in Annual Grant of Options, Number of Shares [Member]
       
Note D - Stock Based Compensation (Details) [Line Items]        
Share-based Compensation Arrangement by Share-based Payment Award, Options, Additional Grants in Period (in Shares)     5,000 5,000
Amortization, Current Year [Member]
       
Note D - Stock Based Compensation (Details) [Line Items]        
Employee Service Share-based Compensation, Nonvested Awards, Compensation Cost Not yet Recognized 33,000   33,000  
Amortization, Next Year [Member]
       
Note D - Stock Based Compensation (Details) [Line Items]        
Employee Service Share-based Compensation, Nonvested Awards, Compensation Cost Not yet Recognized 134,000   134,000  
Amortization, Year 3 [Member]
       
Note D - Stock Based Compensation (Details) [Line Items]        
Employee Service Share-based Compensation, Nonvested Awards, Compensation Cost Not yet Recognized 131,000   131,000  
Amortization Year 4 [Member]
       
Note D - Stock Based Compensation (Details) [Line Items]        
Employee Service Share-based Compensation, Nonvested Awards, Compensation Cost Not yet Recognized 91,000   91,000  
Amortization, Year 5 [Member]
       
Note D - Stock Based Compensation (Details) [Line Items]        
Employee Service Share-based Compensation, Nonvested Awards, Compensation Cost Not yet Recognized $ 30,000   $ 30,000