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Note 8 - Trade Accounts Receivable (Tables)
3 Months Ended
Mar. 31, 2024
Notes Tables  
Schedule of Accounts, Notes, Loans and Financing Receivable [Table Text Block]
   

March 31,

   

December 31,

 
   

2024

   

2023

 

Trade accounts receivable, current

  $ 5,332     $ 5,947  

Trade accounts receivable, long-term

    7       9  

Allowance for doubtful accounts

    (117 )     (134 )

Trade accounts receivable, net

  $ 5,222     $ 5,822  

Unpaid deferred revenue included in trade accounts receivable

  $ 1,042     $ 2,073  
Schedule of Accounts Receivable By Major Customers By Reporting Segments [Table Text Block]
   

March 31,

   

December 31,

 
   

2024

   

2023

 

Company A

    48 %     56 %

Company B

    *       13 %