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Note 5 - Supplemental Balance Sheet Information - Composition of Intangible Assets (Details) - USD ($) $ in Thousands | Sep. 30, 2022 | Dec. 31, 2021
--- | --- | ---
Cost | $ 27,764 | $ 28,454
Accumulated Amortization | 11,669 | 11,064
Net | 16,095 | 17,390
Customer Relationships [Member] |  |
Cost | 12,781 | 13,214
Accumulated Amortization | 5,757 | 5,484
Net | 7,024 | 7,730
Patented Technology [Member] |  |
Cost | 5,481 | 5,667
Accumulated Amortization | 5,092 | 5,126
Net | 389 | 541
Trade Names [Member] |  |
Cost | 4,601 | 4,670
Accumulated Amortization | 475 | 436
Net | 4,126 | 4,234
Trademarks [Member] |  |
Cost | 3,401 | 3,413
Accumulated Amortization | 0 | 0
Net | 3,401 | 3,413
Other Intangible Assets [Member] |  |
Cost | 1,500 | 1,490
Accumulated Amortization | 345 | 18
Net | $ 1,155 | $ 1,472

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