v3.26.3
Note 2 - Basis of Presentation and Recent Accounting Pronouncements (Tables)
9 Months Ended
Sep. 30, 2026
Notes Tables  
Schedule of Fair Value, Assets and Liabilities Measured on Recurring Basis [Table Text Block]
  

Fair Value

  

Level 1

  

Level 2

  

Level 3

 
                 

Investments in debt securities (short-term)

 $5,457  $4,786  $671  $- 

Investments in debt securities (long-term)

 $3,929  $2,656  $1,273  $- 
  

Fair Value

  

Level 1

  

Level 2

  

Level 3

 
                 

Investments in debt securities (short-term)

 $4,917  $4,817  $100  $- 

Investments in debt securities (long-term)

 $7,606  $5,481  $2,125  $-