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Note 5. Stock-Based Compensation (Tables)
6 Months Ended
Jun. 30, 2012
Schedule of Share-based Payment Award, Stock Options, Valuation Assumptions [Table Text Block]
 
 
For the six months ended
June 30, 2012
 
 
   
 
   
Expected volatility
  43.5% 54.5%   
Expected term (in years)
   3.2
3.3  
Risk-free rate
    0.53%    
Expected dividends
    0%    
Schedule of Share-based Compensation, Stock Options, Activity [Table Text Block]
 
 
Number of
Options
   
Weighted
Average
Exercise Price
 
Outstanding as of January 1, 2012
    1,448,016     $ 1.16  
Issued
    459,500     $ 1.10  
Exercised
    (40,000 )   $ 0.65  
Forfeited
    (30,000 )   $ 1.18  
Expired
     (15,000 )   $ 0.65  
Outstanding as of June 30, 2012
    1,822,516     $ 1.16  
                 
Exercisable as of June 30, 2012
    1,138,016     $ 1.21  
Schedule of Share-based Compensation, Shares Authorized under Stock Option Plans, by Exercise Price Range [Table Text Block]
 
Outstanding:
                   
  Range of Exercise Prices     Stock  Options 
Outstanding
   
Weighted 
Average
Exercise 
Price
   
Weighted
Average
Remaining
Contractual Life
 
$
0.55
  $ 1.00       252,000     $ 0.72       6.27  
$
1.01
  $ 1.50       1,338,500     $ 1.17       7.30  
$
1.51
  $ 1.74        232,016     $ 1.64       6.79  
 
Total
             1,822,516     $ 1.16       7.09  
Schedule of Exercisable Options by Exercise Price Range [Table Text Block]
 
Exercisable:
             
 
Range of Exercise Prices
   
Stock
Options
Exercisable
   
Weighted
Average
Exercise Price
 
                     
$
0.55
  $ 1.00       252,000     $ 0.71  
$
1.01
  $ 1.50       654,000     $ 1.26  
$
1.51
  $ 1.74        232,016     $ 1.64  
 
Total
             1,138,016     $ 1.21  
Schedule of Nonvested Restricted Stock Units Activity [Table Text Block]
   
Number of
Restricted Stock
   
Weighted Average Exercise Price
 
Non-vested balance at January 1, 2012
    626,000     $ 0.71  
                 
Changes during the period:
               
Shares granted
    -       -  
Shares vested
    (313,000 )     0.71  
Shares forfeited
     -          
                 
Non-vested balance at June 30, 2012
    313,000     $ 0.71