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Note 13 - Segment Reporting - Summary of Valuation and Qualifying Accounts (Details) - USD ($)
$ in Thousands
 9 Months Ended 12 Months Ended
Sep. 30, 2023
Dec. 31, 2022
Balance at beginning of period $ 693 $ 541
Charged to costs and expenses 0 152
Write-offs during period 98 0
Balance at end of period $ 595 $ 693