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Note 16 - Stockholders' Deficit (Tables)
6 Months Ended
Sep. 30, 2025
Notes Tables  
Share-Based Payment Arrangement, Option, Activity [Table Text Block]
      

Weighted-Average

 
      

Exercise Price per

 
  

Number of Shares

  

Share

 

Outstanding as of March 31, 2025

  220,167  $37.20 

Granted

  -   - 

Exercised

  -   - 

Forfeited or expired

  (10,001) $50.60 

Outstanding as of September 30, 2025

  210,166  $37.36 

Exercisable as of September 30, 2025

  209,916  $37.34 
Share-Based Payment Arrangement, Restricted Stock and Restricted Stock Unit, Activity [Table Text Block]
  

Number of Shares

 

Outstanding as of March 31, 2025

  49,395 

Granted

  17,500 

Vested

  (16,853)

Cancelled

  (5,059)

Outstanding as of September 30, 2025

  44,983 
  

Number of

 
  

Shares

 

Nonvested as of March 31, 2025

  232,350 

Granted

  850,000 

Vested

  (120,150)

Forfeited or expired

  (75,000)

Nonvested as of September 30, 2025

  887,200 
Share-Based Payment Arrangement, Cost by Plan [Table Text Block]
  

Three Months Ended

  

Six Months Ended

 
  

September 30,

  

September 30,

 
  

2025

  

2024

  

2025

  

2024

 

Stock-based compensation expense

                

Cost of sales

 $1,107  $335  $2,126  $650 

Sales and marketing

  15   101   33   62 

Product development

  45   144   98   262 

General and administrative

  996   1,711   1,362   3,017 

Total stock-based compensation expense

 $2,163  $2,291  $3,619  $3,991