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Stockholders Equity (Details - Option activity) - Options Held [Member]
shares in Thousands
3 Months Ended
Sep. 30, 2023
$ / shares
shares
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items]  
Number of shares options outstanding at beginning | shares 1,325
Weighted average exercise price options outstanding at beginning | $ / shares $ 3.65
Number of shares options expired | shares (489)
Weighted average exercise price options expired | $ / shares $ 4.00
Number of shares options exercised | shares (133)
Weighted average exercise price options exercised | $ / shares $ 1.68
Number of shares options outstanding at ending | shares 703
Weighted average exercise price options outstanding at ending | $ / shares $ 3.79