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Note 6 - Fair Value Measurements (Tables)
12 Months Ended
Mar. 31, 2025
Notes Tables  
Schedule of Fair Value, Assets and Liabilities Measured on Recurring Basis [Table Text Block]
  

Total Carrying Value

  

Quoted Prices in Active Markets (Level 1)

  

Significant Other Observable Inputs (Level 2)

  

Significant Unobservable Inputs (Level 3)

 

March 31, 2025:

                

Assets:

                

Cash equivalents

 $51,230  $51,230  $  $ 

Short-term cash instruments

 $1,404  $  $1,404  $ 
  

Total Carrying Value

  

Quoted Prices in Active Markets (Level 1)

  

Significant Other Observable Inputs (Level 2)

  

Significant Unobservable Inputs (Level 3)

 

March 31, 2024:

                

Assets:

                

Cash equivalents

 $71,392  $71,392  $  $ 

Short-term cash instruments

 $1,440  $  $1,440  $ 

Derivative liabilities:

                

Contingent Consideration

 $3,100  $  $  $3,100 
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Table Text Block]
  

NEPSI Acquisition Contingent Consideration

  

NWL Acquisition Contingent Consideration

 

Balance at March 31, 2023

 $1,270  $ 

Change in fair value

  4,922    

Settlement of contingent consideration

  (3,092)   

Balance at March 31, 2024

 $3,100  $ 

Change in fair value

  3,404   3,278 

Settlement of contingent consideration

  (6,504)  (3,278)

Balance at March 31, 2025

 $-  $-