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Note 4 - Other Financial Information - Interest and Other Income (Expense), Net (Details) - USD ($)
$ in Thousands
3 Months Ended 6 Months Ended
Jun. 30, 2023
Jun. 30, 2022
Jun. 30, 2023
Jun. 30, 2022
Interest income     $ 1,080 $ 28
Other income (expense), net     (45) 98
Total interest and other income (expense), net $ 405 $ 128 $ 1,035 $ 126