Note 5 - Goodwill and Other Intangible Assets - Estimated Fair Values Over Carrying Value, Including Goodwill (Details) - Europe [Member] |
Dec. 31, 2025 |
|---|---|
| Power Solutions and Protection [Member] | |
| % by Which Estimated Fair Value Exceeds Carrying Value | 540.00% |
| Cinch Connectivity Solutions [Member] | |
| % by Which Estimated Fair Value Exceeds Carrying Value | 391.00% |
| CUI Power [Member] | |
| % by Which Estimated Fair Value Exceeds Carrying Value | 72.00% |
| Enercon Technologies, Ltd [Member] | |
| % by Which Estimated Fair Value Exceeds Carrying Value | 56.00% |