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Note 2 - Summary of Significant Accounting Policies - Allowance for Doubtful Accounts (Details) - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2023
Dec. 31, 2022
Balance $ 544 $ 313
Provision for bad debts 124 450
Write-offs (437) (219)
Balance $ 231 $ 544