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Note 9 - Fair Value Measurement (Tables)
3 Months Ended
Sep. 30, 2024
Notes Tables  
Fair Value Measurements, Recurring and Nonrecurring [Table Text Block]
   

September 30, 2024

 
   

Carrying

   

Fair Value Measured Using

   

Fair

 

(In thousands)

 

Amount

   

Level 1

   

Level 2

   

Level 3

   

Value

 

Available-for-Sale Investments

                                       

Short-Term Investments

                                       

Mutual Funds - Corporate & Government Debt

    14,633       14,633                   14,633  

ETFs - Corporate & Government Debt

    7,157       7,157                   7,157  

Total Available-for-Sale Investments

  $ 21,790     $ 21,790     $     $     $ 21,790  
   

June 30, 2024

 
   

Carrying

   

Fair Value Measured Using

   

Fair

 

(In thousands)

 

Amount

   

Level 1

   

Level 2

   

Level 3

   

Value

 

Available-for-Sale Investments

                                       

Short-Term Investments

                                       

Mutual Funds - Corporate & Government Debt

    14,426       14,426                   14,426  

ETFs - Corporate & Government Debt

    7,048       7,048                   7,048  

Total Available-for-Sale Investments

  $ 21,474     $ 21,474     $     $     $ 21,474