XML 41 R30.htm IDEA: XBRL DOCUMENT v3.25.4
Note 5 - Fair Value Measurements (Tables)
12 Months Ended
Dec. 31, 2025
Notes Tables  
Debt Securities, Available-for-Sale [Table Text Block]
    

December 31, 2025

  

December 31, 2024

 
  

Fair Value Level1

 

Adjusted Cost

  

Gross Unrealized Losses

  

Fair Value

  

Adjusted Cost

  

Gross Unrealized Losses

  

Fair Value

 

Money market funds

 

Level 1

 $581  $  $581  $2,092  $  $2,092 

Municipal debt securities

 

Level 2

  4,893   (1)  4,892   3,458      3,458 

Corporate debt securities

 

Level 2

  17,513   (9)  17,504   30,491   (26)  30,465 

Total investments

   $22,987  $(10) $22,977  $36,041  $(26) $36,015