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Note 4 - Goodwill and Other Intangible Assets (Tables) | 12 Months Ended
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Dec. 31, 2019
Notes Tables |
Schedule of Goodwill [Table Text Block] |
|  | Segment Structure Prior to October 1, 2019 |
|  | Total |  |  | North America |  |  | Asia |  |  | Europe |
Balance at January 1, 2018: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Goodwill, gross |  | $ | 148,768 |  |  | $ | 63,364 |  |  | $ | 54,508 |  |  | $ | 30,896 |
Accumulated impairment charges |  |  | (128,591 | ) |  |  | (54,474 | ) |  |  | (54,508 | ) |  |  | (19,609 | )
Goodwill, net |  |  | 20,177 |  |  |  | 8,890 |  |  |  | - |  |  |  | 11,287 |
Goodwill allocation related to acquisition |  |  | 1,290 |  |  |  | - |  |  |  | - |  |  |  | 1,290 |
Foreign currency translation |  |  | (1,650 | ) |  |  | - |  |  |  | - |  |  |  | (1,650 | )
Balance at December 31, 2018: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Goodwill, gross |  |  | 148,408 |  |  |  | 63,364 |  |  |  | 54,508 |  |  |  | 30,536 |
Accumulated impairment charges |  |  | (128,591 | ) |  |  | (54,473 | ) |  |  | (54,508 | ) |  |  | (19,610 | )
Goodwill, net |  |  | 19,817 |  |  |  | 8,891 |  |  |  | - |  |  |  | 10,926 |
Impairment charge |  |  | (8,891 | ) |  |  | (8,891 | ) |  |  | - |  |  |  | - |
Foreign currency translation |  |  | (122 | ) |  |  | - |  |  |  | - |  |  |  | (122 | )
Measurement period adjustment |  |  | (26 | ) |  |  | - |  |  |  | - |  |  |  | (26 | )
Balance at September 30, 2019: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Goodwill, gross |  |  | 148,260 |  |  |  | 63,364 |  |  |  | 54,508 |  |  |  | 30,388 |
Accumulated impairment charges |  |  | (137,482 | ) |  |  | (63,364 | ) |  |  | (54,508 | ) |  |  | (19,610 | )
Goodwill, net |  | $ | 10,778 |  |  | $ | - |  |  | $ | - |  |  | $ | 10,778 |
|  | Segment Structure Effective October 1, 2019 |
|  | Total |  |  | Cinch Connectivity Solutions |  |  | Power Solutions & Protection |  |  | Magnetic Solutions |
Balance at October 1, 2019: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Goodwill, gross (reallocation) |  | $ | 10,778 |  |  | $ | 6,467 |  |  | $ | 4,311 |  |  | $ | - |
Goodwill, net |  |  | 10,778 |  |  |  | 6,467 |  |  |  | 4,311 |  |  |  | - |
Goodwill allocation related to acquisition |  |  | 10,287 |  |  |  | - |  |  |  | 10,287 |  |  |  | - |
Foreign currency translation |  |  | 928 |  |  |  | 712 |  |  |  | 216 |  |  |  | - |
Balance at December 31, 2019: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Goodwill, gross |  |  | 21,993 |  |  |  | 7,179 |  |  |  | 14,814 |  |  |  | - |
Goodwill, net |  | $ | 21,993 |  |  | $ | 7,179 |  |  | $ | 14,814 |  |  | $ | - |
Schedule of Excess of Estimated Fair Values Over Carrying Value, Including Goodwill [Table Text Block] |
Reporting Unit |  | % by Which Estimated Fair Value Exceeds Carrying Value |
Connectivity Europe |  | 138.8 | %
Power Europe |  |  | 16.4 | %
Schedule of Finite-Lived Intangible Assets [Table Text Block] |
|  | December 31, 2019 |  |  | December 31, 2018 |
|  | Gross Carrying |  |  | Accumulated |  |  | Net Carrying |  |  | Gross Carrying |  |  | Accumulated |  |  | Net Carrying |
|  | Amount |  |  | Amortization |  |  | Amount |  |  | Amount |  |  | Amortization |  |  | Amount |
Patents, licenses and technology |  | $ | 38,885 |  |  | $ | 21,757 |  |  | $ | 17,128 |  |  | $ | 38,845 |  |  | $ | 18,281 |  |  | $ | 20,564 |
Customer relationships |  |  | 55,656 |  |  |  | 17,231 |  |  |  | 38,425 |  |  |  | 44,588 |  |  |  | 14,193 |  |  |  | 30,395 |
Non-compete agreements |  |  | 2,701 |  |  |  | 2,701 |  |  |  | - |  |  |  | 2,683 |  |  |  | 2,683 |  |  |  | - |
Trademarks |  |  | 16,852 |  |  |  | 40 |  |  |  | 16,812 |  |  |  | 11,770 |  |  |  | 40 |  |  |  | 11,730 |
|  | $ | 114,094 |  |  | $ | 41,729 |  |  | $ | 72,365 |  |  | $ | 97,886 |  |  | $ | 35,197 |  |  | $ | 62,689 |
Schedule of Finite-Lived Intangible Assets, Future Amortization Expense [Table Text Block] |
Year Ended December 31, |  | Amortization Expense |
2020 |  | $ | 7,112 |
2021 |  |  | 7,108 |
2022 |  |  | 5,735 |
2023 |  |  | 4,473 |
2024 |  |  | 4,412 |

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