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Note D - Stock Based Compensation (Details) - Stock Option Activity by Exercise Price (USD $)
 9 Months Ended
Sep. 30, 2013
Dec. 31, 2012
Note D - Stock Based Compensation (Details) - Stock Option Activity by Exercise Price [Line Items]    
Exercise Price (in Dollars per share) $ 11.00 $ 11.38
Shares Under Outstanding Options 169,565 235,379
Weighted-Average Remaining Contractual Term 6 years 62 days  
Shares Under Exercisable Options 96,026  
Exercise Price 1 [Member]
    
Note D - Stock Based Compensation (Details) - Stock Option Activity by Exercise Price [Line Items]    
Exercise Price (in Dollars per share) $ 3.84  
Shares Under Outstanding Options 4,000  
Weighted-Average Remaining Contractual Term 146 days  
Shares Under Exercisable Options 4,000  
Exercise Price 2 [Member]
    
Note D - Stock Based Compensation (Details) - Stock Option Activity by Exercise Price [Line Items]    
Exercise Price (in Dollars per share) $ 10.44  
Shares Under Outstanding Options 25,000  
Weighted-Average Remaining Contractual Term 4 years 146 days  
Shares Under Exercisable Options 25,000  
Exercise Price 3 [Member]
    
Note D - Stock Based Compensation (Details) - Stock Option Activity by Exercise Price [Line Items]    
Exercise Price (in Dollars per share) $ 10.90  
Shares Under Outstanding Options 15,000  
Weighted-Average Remaining Contractual Term 3 years 255 days  
Shares Under Exercisable Options 15,000  
Exercise Price 4 [Member]
    
Note D - Stock Based Compensation (Details) - Stock Option Activity by Exercise Price [Line Items]    
Exercise Price (in Dollars per share) $ 10.90  
Shares Under Outstanding Options 69,000  
Weighted-Average Remaining Contractual Term 8 years 255 days  
Shares Under Exercisable Options 13,800  
Exercise Price 5 [Member]
    
Note D - Stock Based Compensation (Details) - Stock Option Activity by Exercise Price [Line Items]    
Exercise Price (in Dollars per share) $ 11.22  
Shares Under Outstanding Options 30,565  
Weighted-Average Remaining Contractual Term 7 years 73 days  
Shares Under Exercisable Options 12,226  
Exercise Price 6 [Member]
    
Note D - Stock Based Compensation (Details) - Stock Option Activity by Exercise Price [Line Items]    
Exercise Price (in Dollars per share) $ 11.54  
Shares Under Outstanding Options 8,000  
Weighted-Average Remaining Contractual Term 3 years 146 days  
Shares Under Exercisable Options 8,000  
Exercise Price 7 [Member]
    
Note D - Stock Based Compensation (Details) - Stock Option Activity by Exercise Price [Line Items]    
Exercise Price (in Dollars per share) $ 11.75  
Shares Under Outstanding Options 8,000  
Weighted-Average Remaining Contractual Term 2 years 146 days  
Shares Under Exercisable Options 8,000  
Exercise Price 8 [Member]
    
Note D - Stock Based Compensation (Details) - Stock Option Activity by Exercise Price [Line Items]    
Exercise Price (in Dollars per share) $ 14.32  
Shares Under Outstanding Options 10,000  
Weighted-Average Remaining Contractual Term 1 year 146 days  
Shares Under Exercisable Options 10,000