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Note 15 - Concentration of Risk (Tables)
12 Months Ended
Jun. 30, 2025
Notes Tables  
Schedules of Concentration of Risk, by Risk Factor [Table Text Block]
   

A

   

B

   

C

 

Year Ended June 30, 2025

                       

Revenues, customer concentration risk

    0 %     0 %     0 %
                         

Year Ended June 30, 2024

                       

Revenues, customer concentration risk

    73 %     27 %     0 %
                         

Year Ended June 30, 2023

                       

Revenues, customer concentration risk

    52 %     48 %     *