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Note 4 - Goodwill and Intangible Assets (Tables) | 9 Months Ended
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Sep. 30, 2020
Notes Tables |
Schedule of Goodwill [Table Text Block] |
(in thousands) |  |  |  |
Carrying amount at December 31, 2019 |  | $ | 57,381 |
Effect of change in currency translation |  |  | 266 |
Carrying amount at September 30, 2020 |  | $ | 57,647 |
Schedule of Intangible Assets and Goodwill [Table Text Block] |
|  |  |  |  |  | September 30, 2020 |  |  | December 31, 2019 |
|  | Weighted |  |  | (in thousands) |
|  | Average Life* |  |  |  |  |  |  | Accumulated |  |  |  |  |  |  |  |  |  |  | Accumulated |  |  |  |  |
Amortizable intangible assets: |  | (in years) |  |  | Gross |  |  | Amortization |  |  | Net |  |  | Gross |  |  | Amortization |  |  | Net |
Distribution agreements/customer relationships |  |  | 9.1 |  |  | $ | 18,130 |  |  | $ | (7,400 | ) |  | $ | 10,730 |  |  | $ | 17,891 |  |  | $ | (6,340 | ) |  | $ | 11,551 |
Existing technology |  |  | 5.4 |  |  |  | 41,347 |  |  |  | (22,524 | ) |  |  | 18,823 |  |  |  | 41,222 |  |  |  | (19,698 | ) |  |  | 21,524 |
Trade names |  |  | 5.7 |  |  |  | 8,668 |  |  |  | (4,150 | ) |  |  | 4,518 |  |  |  | 7,692 |  |  |  | (3,497 | ) |  |  | 4,195 |
Patents |  |  | - |  |  |  | 213 |  |  |  | (213 | ) |  |  | - |  |  |  | 218 |  |  |  | (218 | ) |  |  | - |
Total amortizable intangible assets |  |  |  |  |  | $ | 68,358 |  |  | $ | (34,287 | ) |  | $ | 34,071 |  |  | $ | 67,023 |  |  | $ | (29,753 | ) |  | $ | 37,270 |
Indefinite-lived intangible assets: |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 244 |  |  |  |  |  |  |  |  |  |  |  | 1,135 |
Total intangible assets |  |  |  |  |  |  |  |  |  |  |  |  |  | $ | 34,315 |  |  |  |  |  |  |  |  |  |  | $ | 38,405 |
Schedule of Finite-Lived Intangible Assets, Future Amortization Expense [Table Text Block] |
Year Ending December 31, |  | Amortization Expense |
|  | (in thousands) |
2020 (remainder of year) |  | $ | 1,676 |
2021 |  |  | 5,703 |
2022 |  |  | 5,672 |
2023 |  |  | 5,569 |
2024 |  |  | 5,267 |
Thereafter |  |  | 10,184 |
Total |  | $ | 34,071 |

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