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6. Stockholders Equity (Details - Option activity) - Stock Options [Member]
shares in Thousands
 3 Months Ended
Sep. 30, 2020
$ / shares
shares
Number of shares  
Number of Shares Options Outstanding, Beginning | shares 2,055
Number of Shares Options Forfeited | shares (32)
Number of Shares Options Expired | shares (4)
Number of Shares Options Exercised | shares (199)
Number of Shares Options Outstanding, Ending | shares 1,820
Weighted Average Exercise Price per share  
Exercise Price Outstanding, Beginning | $ / shares $ 2.72
Exercise Price Forfeited | $ / shares 1.7
Exercise Price Expired | $ / shares 0.62
Exercise Price Exercised | $ / shares 1.83
Exercise Price Outstanding, Ending | $ / shares $ 2.83