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Note 5 - Benefit Plans (Detail) (USD $)
3 Months Ended
Mar. 31, 2013
Mar. 31, 2012
Allocated Share-based Compensation Expense $ 35,782 $ 32,342
Stock Options [Member]
   
Employee Service Share-based Compensation, Nonvested Awards, Total Compensation Cost Not yet Recognized 70,632  
Restricted Stock [Member]
   
Employee Service Share-based Compensation, Nonvested Awards, Total Compensation Cost Not yet Recognized 97,393  
Director [Member]
   
Restricted Stock or Unit Expense $ 116,032  
Stock Issued During Period, Shares, Restricted Stock Award, Net of Forfeitures (in Shares) 16,576  
Stock Issued During Period, Shares, Restricted Stock Award, Price per Share (in Dollars per share) $ 7.00