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Note 10 - Fair Value Measurements (Tables)
6 Months Ended
Sep. 30, 2025
Notes Tables  
Fair Value, Liabilities Measured on Recurring Basis [Table Text Block]
  

Quoted Prices

             
  

in Active

  

Significant

         
  

Markets for

  

Other

  

Significant

     
  

Identical

  

Observable

  

Unobservable

     
  

Assets

  

Inputs

  

Inputs

     
  

(Level 1)

  

(Level 2)

  

(Level 3)

  

Total

 

Commodity swap contracts – financial assets, net

 $  $920  $  $920 

Commodity futures – financial liabilities, net

  (72)  -   -   (72)

Total

 $(72) $920  $  $848 
  

Quoted Prices

             
  

in Active

  

Significant

         
  

Markets for

  

Other

  

Significant

     
  

Identical

  

Observable

  

Unobservable

     
  

Assets

  

Inputs

  

Inputs

     
  

(Level 1)

  

(Level 2)

  

(Level 3)

  

Total

 

Commodity futures – financial asset, net

 $349  $  $  $349 

Total

 $349  $  $  $349