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Stock Option Plans (Tables)
9 Months Ended
Sep. 30, 2012
Disclosure Of Compensation Related Costs, Share-Based Payments [Abstract]  
Schedule of Share-based Payment Award, Stock Options, Valuation Assumptions [Table Text Block]

The fair value of each option grant is estimated on the date of grant using the Black-Scholes option-pricing model. The following assumptions were used for the nine months ended September 30, 2012 and 2011.

 

      2012       2011  
Risk-free interest rate     .83% - 1.10%       1.26% - 2.46%  
Expected dividend yield     0%     0%
Expected stock price volatility     75%     75%
Expected life of options     5.75 years       5.75 years  
Schedule of Share-based Compensation, Stock Options, Activity [Table Text Block]

A summary of all stock option activity for the nine months ended September 30, 2012 follows:

 

    Number of
Options
    Weighted
Average
Exercise
Price
    Weighted-
Average
Remaining
Contractual
Term
    Aggregate
Intrinsic Value
 
                         
Outstanding at December 31, 2011     6,889,500     $ .20        
Options granted     250,000     $ .19            
Options expired     (61,833 )   $ .15              
Options forfeited     (48,167 )   $ .10              
Outstanding at September 30, 2012     7,029,500     $ .20       5.8 years     $ 526,743  
                                 
Exercisable at September 30, 2012     5,788,833     $ .21       5.2 years     $ 410,673