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Note 4 - Goodwill and Other Intangible Assets - Estimated Fair Values Over Carrying Value, Including Goodwill (Details) - Europe [Member] | Dec. 31, 2020 | Jul. 31, 2019
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% by Which Estimated Fair Value Exceeds Carrying Value |  | 17.30%
Cinch Connectivity Solutions Segment [Member] |  |
% by Which Estimated Fair Value Exceeds Carrying Value | 51.10% |
Power Solutions and Protection Segment [Member] |  |
% by Which Estimated Fair Value Exceeds Carrying Value | 21.00% |
CUI Power [Member] |  |
% by Which Estimated Fair Value Exceeds Carrying Value | 38.60% |

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- Definition Percentage of fair value of reporting unit in excess of carrying amount. + References No definition available. + Details
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- Details
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- Details
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- Details
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- Details
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