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Note 4 - Supplemental Balance Sheet Information - Composition of Intangible Assets (Details) - USD ($) $ in Thousands | Jun. 30, 2024 | Dec. 31, 2023
--- | --- | ---
Cost | $ 28,236 | $ 28,247
Accumulated Amortization | 13,590 | 13,140
Net | 14,646 | 15,107
Customer Relationships [Member] |  |
Cost | 13,087 | 13,092
Accumulated Amortization | 6,956 | 6,656
Net | 6,131 | 6,436
Patented Technology [Member] |  |
Cost | 5,603 | 5,606
Accumulated Amortization | 5,378 | 5,322
Net | 225 | 284
Trade Names [Member] |  |
Cost | 4,647 | 4,647
Accumulated Amortization | 703 | 647
Net | 3,944 | 4,000
Trademarks [Member] |  |
Cost | 3,399 | 3,402
Accumulated Amortization | 0 | 0
Net | 3,399 | 3,402
Other Intangible Assets [Member] |  |
Cost | 1,500 | 1,500
Accumulated Amortization | 553 | 515
Net | $ 947 | $ 985

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