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Note 2. Stock-Based Compensation (Details) (USD $)
3 Months Ended 9 Months Ended
Mar. 31, 2013
Mar. 31, 2012
Mar. 31, 2013
Mar. 31, 2012
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]        
Employee Service Share-based Compensation, Nonvested Awards, Total Compensation Cost Not yet Recognized $ 19,949 $ 71,241 $ 19,949 $ 71,241
Stock Options [Member]
       
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]        
Allocated Share-based Compensation Expense $ 9,161 $ 16,485 $ 34,808 $ 56,868