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Note 5 - Employee Stock Compensation Plans (Tables)
3 Months Ended
Sep. 30, 2012
Schedule of Share-based Compensation, Stock Options, Activity [Table Text Block]
   
Options
   
Weighted-Average Exercise Price
   
Aggregate
Intrinsic
Value
 
                   
Outstanding at July 1, 2012
    3,481,900     $ 0.76        
Granted
                 
Exercised
                 
Forfeited
                 
Expired
                 
                       
Outstanding at September 30, 2012
    3,481,900     $ 0.76     $ 411,000  
                         
Exercisable at September 30, 2012
    1,206,100     $ 0.81     $ 160,000  
                         
Weighted-average remaining contractual life
 
3.4 Years
                 
Schedule of Share-based Compensation, Shares Authorized under Stock Option Plans, by Exercise Price Range [Table Text Block]
 
 
 
Range of
Exercise Prices
 
 
 
 
Options
Outstanding
   
Weighted Average Exercise Prices of Options Outstanding
 
Weighted Average Remaining Contractual Life of Options Outstanding (in years)
 
 
 
 
Options
Exercisable
   
Weighted Average Exercise Prices of Options Exercisable
 
Weighted Average Remaining Contractual Life of Options Exercisable (in years)
$0.30  – 0.50     170,120     $ 0.42  
2.0
    170,120     $ 0.42  
2.0
 0.60  – 0.71     1,883,920       0.70  
8.5
    529,480       0.69  
8.0
 0.76 0.90     1,189,360       0.81  
8.5
    268,000       0.86  
4.4
 1.05 1.71     238,500       1.29  
3.4
    238,500       1.29  
3.4
          3,481,900                 1,206,100