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Note 4 - Commitments and Contingencies - Changes in Produce Warranty Liability (Details) - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2023
Dec. 31, 2022
Accrued warranty obligations – beginning $ 323 $ 133
Accruals for warranties issued 458 287
Settlements made (234) (97)
Accrued warranty obligations - ending $ 547 $ 323