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Note 3 - Accounts Receivable (Tables)
9 Months Ended
Sep. 30, 2024
Notes Tables  
Schedule of Accounts, Notes, Loans and Financing Receivable [Table Text Block]
    December 31, 2023     September 30, 2024  

Trade accounts receivable

  $ 4,356     $ 3,406  

Allowance for credit losses

    (131 )     (147 )

Accounts receivable-net

  $ 4,225     $ 3,259