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Note 13 - Geographic Information (Tables)
12 Months Ended
Mar. 31, 2023
Notes Tables  
Schedule of Revenue from External Customers and Long-Lived Assets, by Geographical Areas [Table Text Block]
  

Year Ended March 31, 2023

 
  

U.S.

  

Foreign

  

Consolidated

 

Net revenues

 $7,177  $  $7,177 

Long-lived assets

 $7  $269  $276 
  

Year Ended March 31, 2022

 
  

U.S.

  

Foreign

  

Consolidated

 

Net revenues

 $8,206  $  $8,206 

Long-lived assets

 $97  $387  $484