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Note 4 - Goodwill and Intangible Assets (Tables) | 3 Months Ended
--- | ---
Mar. 31, 2020
Notes Tables |
Schedule of Goodwill [Table Text Block] |
|  | March 31,
|  | 2020
(in thousands) |  |  |  |
Balance at December 31, 2019 |  | $ | 57,381 |
Effect of change in currency translation |  |  | (589 | )
Balance at March 31, 2020 |  | $ | 56,792 |
Schedule of Intangible Assets and Goodwill [Table Text Block] |
|  |  |  | March 31, 2020 |  | December 31, 2019
|  |  |  | (in thousands)
Intangible assets: |  | Weighted Average Life* (Years) |  | Gross |  | Accumulated Amortization |  | Net |  | Gross |  | Accumulated Amortization |  | Net
Distribution agreements/customer relationships |  |  | 8.4 |  |  | $ | 17,685 |  |  | $ | (6,550 | ) |  | $ | 11,135 |  |  | $ | 17,891 |  |  | $ | (6,340 | ) |  | $ | 11,551 |
Existing technology |  |  | 5.5 |  |  |  | 40,923 |  |  |  | (20,327 | ) |  |  | 20,596 |  |  |  | 41,222 |  |  |  | (19,698 | ) |  |  | 21,524 |
Trade names |  |  | 5.3 |  |  |  | 8,511 |  |  |  | (3,667 | ) |  |  | 4,844 |  |  |  | 7,692 |  |  |  | (3,497 | ) |  |  | 4,195 |
Patents |  |  | - |  |  |  | 206 |  |  |  | (206 | ) |  |  | - |  |  |  | 218 |  |  |  | (218 | ) |  |  | - |
Indefinite-lived tradename |  |  | NA |  |  |  | 232 |  |  |  | - |  |  |  | 232 |  |  |  | 1,135 |  |  |  | 0 |  |  |  | 1,135 |
Total intangible assets |  |  |  |  |  | $ | 67,557 |  |  | $ | (30,750 | ) |  | $ | 36,807 |  |  | $ | 68,158 |  |  | $ | (29,753 | ) |  | $ | 38,405 |

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