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Note 1 - Organization and Summary of Significant Accounting Policies (Tables)
9 Months Ended
Jan. 31, 2024
Notes Tables  
Fair Value Measurements, Recurring and Nonrecurring [Table Text Block]
  As of January 31, 2024 

($ in thousands)

 

Level 1

  

Level 2

  

Level 3

  

Total

 

Cash equivalents

 $4,739  $-  $-  $4,739 

Equity securities

  15,370   -   -   15,370 

Available-for-sale fixed income securities

  45,899   250   -   46,149 
  $66,008  $250  $-  $66,258 
  As of April 30, 2023 

($ in thousands)

 

Level 1

  

Level 2

  

Level 3

  

Total

 

Cash equivalents

 $7,240  $-  $-  $7,240 

Equity securities

  14,546   -   -   14,546 

Available-for-sale fixed income securities

  39,178   750   -   39,928 
  $60,964  $750  $-  $61,714