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Note 7 - Related Party Transactions (Tables)
6 Months Ended
Jun. 30, 2022
Notes Tables  
Schedule of Related Party Transactions [Table Text Block]

Name of related party

   

June 30,

2022

(unaudited)

   

December 31,

2021

 

MHW

Promissory notes payable   $ 945     $ 945  
  Discount on notes payable     -       (11 )
        945       934  
                   
  Accrued interest outstanding     267       268  
                   

MHW Partners

Promissory notes payable   $ 650     $ 650  
  Discount on notes payable     -       (11 )
        650       639  
                   
  Accrued interest outstanding     182       182  
   

Three Months Ended

June 30,

   

Six Months Ended

June 30,

 
   

2022

   

2021

   

2022

   

2021

 

Interest expense

                               

MHW

  $ 36     $ 36     $ 71     $ 70  

MHW Partners

    25       24       49       48