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Note 5 - Fair Value Measurements (Tables)
12 Months Ended
Jun. 30, 2022
Notes Tables  
Fair Value Measurements, Recurring and Nonrecurring [Table Text Block]
  

Fair Value Measurements at June 30, 2022

 

Assets

 

Level 1

  

Level 2

  

Level 3

  

Balance

 

Corporate money market funds(1)

 $51,035  $-  $-  $51,035 

Investments(2)

  -   11,199   -   11,199 

Total

 $51,035  $11,199  $-  $62,234 
  

Fair Value Measurements at June 30, 2021

 

Assets

 

Level 1

  

Level 2

  

Level 3

  

Balance

 

Corporate money market funds(1)

 $70,247  $-  $-  $70,247 

Investments(2)

  -   -   -   - 

Total

 $70,247  $-  $-  $70,247