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Note 9 - Commitments and Contingencies - Changes in Product Warranty Liability (Details) - USD ($)
$ in Thousands
6 Months Ended
Jun. 30, 2025
Jun. 30, 2024
Accrued warranty obligations – beginning $ 887 $ 547
Accruals for warranties issued 251 389
Settlements made (173) (147)
Accrued warranty obligations – ending $ 965 $ 789