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Note 5 - Property, Plant and Equipment (Tables)
12 Months Ended
Apr. 30, 2024
Notes Tables  
Property, Plant and Equipment [Table Text Block]
  

2024

  

2023

 

Land

 $4,224  $4,751 

Building and improvements

  48,190   47,867 

Aircraft

  5,599   8,515 

Machinery and equipment

  7,484   5,547 

Office furniture and fixtures

  14,389   13,881 

Leasehold improvements

  4,032   4,032 
   83,918   84,593 

Accumulated depreciation

  (24,331)  (25,526)

Total property, plant and equipment

 $59,587  $59,067