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Note 4 - Supplemental Balance Sheet Information - Composition of Intangible Assets (Details) - USD ($) $ in Thousands | Jun. 30, 2026 | Dec. 31, 2025
--- | --- | ---
Cost | $ 25,537 | $ 25,595
Accumulated Amortization | 15,151 | 14,662
Net | 10,386 | 10,933
Customer Relationships [Member] |  |
Cost | 18,291 | 18,333
Accumulated Amortization | 8,809 | 8,360
Net | 9,482 | 9,973
Patented Technology [Member] |  |
Cost | 5,746 | 5,762
Accumulated Amortization | 5,637 | 5,635
Net | 109 | 127
Other Intangible Assets [Member] |  |
Cost | 1,500 | 1,500
Accumulated Amortization | 705 | 667
Net | $ 795 | $ 833

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