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Note 3 - Revenues - Deferred Revenue (Details) - USD ($) $ in Thousands | 3 Months Ended |
--- | --- | ---
Mar. 31, 2024 | Mar. 31, 2023 | Dec. 31, 2023
Deferred revenue | $ 4,388 |  | $ 4,508
Deferred Revenue, change | $ (120) | $ 741 |
Deferred revenue, % change | (2.70%) |  |
Service, Maintenance, and Warranty Contracts [Member] |  |  |
Deferred revenue | $ 2,748 |  | 2,849
Deferred Revenue, change | $ (101) |  |
Deferred revenue, % change | (3.50%) |  |
Customer Advances [Member] |  |  |
Deferred revenue | $ 1,640 |  | $ 1,659
Deferred Revenue, change | $ (19) |  |
Deferred revenue, % change | (1.10%) |  |

X
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