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Note 8 - Stock-Based Compensation (Detail) (USD $)
0 Months Ended 1 Months Ended 6 Months Ended
Mar. 10, 2011
Jun. 30, 2012
May 18, 2012
Mar. 31, 2012
Jun. 30, 2012
Jun. 30, 2011
Share-based Compensation Arrangement by Share-based Payment Award Options Term   10        
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Period   4 years 1 year      
Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Gross (in Shares)     40,000      
Share-based Compensation Arrangements by Share-based Payment Award, Options, Grants in Period, Weighted Average Exercise Price (in Dollars per share)     $ 1.23      
Estimated Stock Compensation Expense (in Dollars)     $ 49,200      
Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Expected Dividend Rate     0.00%      
Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Expected Volatility Rate     157.00%      
Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Risk Free Interest Rate     1.71%      
Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Expected Term     6 years      
Stock or Unit Option Plan Expense (in Dollars)         220,000 164,000
Employee Service Share-based Compensation, Nonvested Awards, Total Compensation Cost Not yet Recognized, Stock Options (in Dollars)   657,000     657,000  
Share-based Compensation, Effect on Earnings Per Share         The impact of the total share-based compensation expense on basic/diluted earnings per share was approximately onecent for both the six months ended June 30, 2012 and 2011.  
Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Authorized (in Shares) 100,000          
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Rights The restricted shares vest 20,000 shares a year over the next five (5) years, starting on March 10, 2012 and continuing through March 10, 2016, provided Mr. Raymond continues to be so employed by the Company on the applicable vesting date.          
Stock Issued During Period, Shares, Restricted Stock Award, Gross (in Shares)       20,000    
Employee Service Share-based Compensation, Nonvested Awards, Total Compensation Cost Not yet Recognized, Period for Recognition       5 years    
Restricted Stock or Unit Expense (in Dollars)         22,128  
Employee Service Share-based Compensation, Nonvested Awards, Total Compensation Cost Not yet Recognized, Share-based Awards Other than Options (in Dollars)   $ 166,000     $ 166,000  
Share-based Compensation Arrangement by Share-based Payment Award, Discount from Market Price, Purchase Date   15.00%        
Purchase Price for Shares Under CSP Plan   15.00%