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Note 2 - Summary of Significant Accounting Policies (Tables)
9 Months Ended
Dec. 31, 2024
Notes Tables  
Cash, Cash Equivalents and Investments [Table Text Block]
  

December 31,

  

March 31,

 
  

2024

  

2024

 

Total cash and cash equivalents

 $572  $1,445 
Schedule of Accounts, Notes, Loans and Financing Receivable [Table Text Block]
  

December 31,

  

March 31,

 
  

2024

  

2024

 

Accounts receivable, gross

 $5,927  $6,099 

Less: Allowance for credit losses

  (101)  (76)

Accounts receivable, net

 $5,826  $6,023