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Note 3. Net Loss per Common Share (Details) - shares
3 Months Ended
Sep. 30, 2019
Sep. 30, 2018
Note 3. Net Loss Per Common Share    
Basic weighted-average number of common shares outstanding during the period 8,576,961 8,160,431
Weighted-average number of dilutive potential common shares outstanding during the period 0 240,393
Diluted weighted-average number of common and potential common shares outstanding during the period 8,576,961 8,400,824