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Note 4 - Fair Value Measurements (Tables)
9 Months Ended
Dec. 31, 2023
Notes Tables  
Fair Value Measurements, Recurring and Nonrecurring [Table Text Block]
   

December 31, 2023

   

March 31, 2023

 
   

Carrying Value

   

Fair Value (Level 2)

   

Carrying Value

   

Fair Value (Level 2)

 

Notes

  $ 170,965     $ 158,916     $ 170,272     $ 161,072