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Note 2 - Earnings Per Share (Tables)
6 Months Ended
Sep. 30, 2022
Notes Tables  
Schedule of Earnings Per Share, Basic and Diluted [Table Text Block]
   

Three Months Ended September 30,

   

Six Months Ended September 30,

 
   

2022

   

2021

   

2022

   

2021

 
                                 

Numerator:

                               

Net loss

  $ (153 )   $ (632 )   $ (1,230 )   $ (1,547 )

Denominator:

                               

Denominator for basic and diluted loss per share — weighted average shares

    21,043       21,043       21,043       21,043  

Net loss per share:

                               

Basic and diluted loss per share

  $ (0.01 )   $ (0.03 )   $ (0.06 )   $ (0.07 )