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Note 8 - Commitments and Contingencies (Tables)
9 Months Ended
Sep. 30, 2023
Notes Tables  
Schedule of Product Warranty Liability [Table Text Block]
   

Nine-month period ended September 30,

 
   

2023

   

2022

 

Accrued warranty obligations – beginning

  $ 323     $ 133  

Accruals for warranties issued

   

260

      247  

Settlements made

    (98 )     (94 )

Accrued warranty obligations – ending

  $

485

    $ 286