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Note 3 - Revenue - Components of Accounts Receivable (Details) - USD ($) $ in Thousands | Jun. 30, 2024 | Dec. 31, 2023 | Dec. 31, 2022
--- | --- | --- | ---
Trade receivables | $ 5,182 | $ 4,300 |
Unbilled receivables | 1,543 | 2,285 |
Receivable for employee retention credit | 1,677 | 0 |
Other short-term receivables | 355 | 255 |
Allowance for credit losses | (106) | (111) | $ (110)
Total accounts receivable | $ 8,651 | $ 6,729 |

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