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Note 3 - Revenues - Deferred Revenue (Details) - USD ($) $ in Thousands | 9 Months Ended |
--- | --- | ---
Sep. 30, 2024 | Sep. 30, 2023 | Dec. 31, 2023
Deferred revenue | $ 3,689 |  | $ 4,508
Deferred Revenue, change | $ (819) | $ 635 |
Deferred revenue, % change | (18.20%) |  |
Service, Maintenance, and Warranty Contracts [Member] |  |  |
Deferred revenue | $ 2,472 |  | 2,849
Deferred Revenue, change | $ (377) |  |
Deferred revenue, % change | (13.20%) |  |
Customer Advances [Member] |  |  |
Deferred revenue | $ 1,217 |  | $ 1,659
Deferred Revenue, change | $ (442) |  |
Deferred revenue, % change | (26.60%) |  |

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