v3.25.2
Note 2 - Summary of Significant Accounting Policies - Revenue by Product (Details) - USD ($)
$ in Thousands
12 Months Ended
Jun. 30, 2025
Jun. 30, 2024
Revenue $ 1,049 $ 1,664
Product [Member]    
Revenue 804 1,576
Grant [Member]    
Revenue 115 0
Service [Member]    
Revenue $ 130 $ 88