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Note 2 - Summary of Significant Accounting Policies - Allowance for Credit Loss (Details) - USD ($)
$ in Thousands
9 Months Ended
Sep. 30, 2025
Sep. 30, 2024
Balance as of beginning of period $ 708 $ 701
Amounts accrued 201 186
Write-offs charged against the allowance (200) (1)
Balance as of end of period $ 709 $ 886