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Note 4 - Goodwill and Other Intangible Assets (Tables) | 12 Months Ended
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Dec. 31, 2020
Notes Tables |
Schedule of Goodwill [Table Text Block] |
|  | Total |  |  | Cinch Connectivity Solutions |  |  | Power Solutions & Protection |  |  | Magnetic Solutions |
Balance at January 1, 2020: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Goodwill, gross |  | $ | 21,993 |  |  | $ | 7,179 |  |  | $ | 14,814 |  |  | $ | - |
Accumulated impairment charges |  |  | - |  |  |  | - |  |  |  | - |  |  |  | - |
Goodwill, net |  | $ | 21,993 |  |  | $ | 7,179 |  |  | $ | 14,814 |  |  | $ | - |
Goodwill allocation related to acquisition |  |  | 588 |  |  |  | - |  |  |  | 588 |  |  |  | - |
Foreign currency translation |  |  | 1,385 |  |  |  | 676 |  |  |  | 709 |  |  |  | - |
Balance at December 31, 2020: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Goodwill, gross |  | $ | 23,966 |  |  | $ | 7,855 |  |  | $ | 16,111 |  |  | $ | - |
Goodwill, net |  | $ | 23,966 |  |  | $ | 7,855 |  |  | $ | 16,111 |  |  | $ | - |
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 |  | 51.1 | %
Power Europe |  |  | 21.0 | %
CUI |  |  | 38.6 | %
Schedule of Finite-Lived Intangible Assets [Table Text Block] |
|  | December 31, 2020 |  |  | December 31, 2019 |
|  | Gross Carrying |  |  | Accumulated |  |  | Net Carrying |  |  | Gross Carrying |  |  | Accumulated |  |  | Net Carrying |
|  | Amount |  |  | Amortization |  |  | Amount |  |  | Amount |  |  | Amortization |  |  | Amount |
Patents, licenses and technology |  | $ | 39,056 |  |  | $ | 25,160 |  |  | $ | 13,896 |  |  | $ | 38,885 |  |  | $ | 21,757 |  |  | $ | 17,128 |
Customer relationships |  |  | 56,261 |  |  |  | 21,280 |  |  |  | 34,981 |  |  |  | 55,656 |  |  |  | 17,231 |  |  |  | 38,425 |
Non-compete agreements |  |  | 2,716 |  |  |  | 2,717 |  |  |  | (1 | ) |  |  | 2,701 |  |  |  | 2,701 |  |  |  | - |
Trademarks |  |  | 16,953 |  |  |  | 40 |  |  |  | 16,913 |  |  |  | 16,852 |  |  |  | 40 |  |  |  | 16,812 |
|  | $ | 114,986 |  |  | $ | 49,197 |  |  | $ | 65,789 |  |  | $ | 114,094 |  |  | $ | 41,729 |  |  | $ | 72,365 |
Schedule of Finite-Lived Intangible Assets, Future Amortization Expense [Table Text Block] |
December 31, |  | Amortization Expense |
2021 |  | $ | 6,972 |
2022 |  |  | 5,673 |
2023 |  |  | 4,523 |
2024 |  |  | 4,461 |
2025 |  |  | 4,445 |

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