Note 5 - Goodwill and Other Intangible Assets - Estimated Fair Values Over Carrying Value, Including Goodwill (Details) - Europe [Member]	Dec. 31, 2024
Power Solutions and Protection [Member]
% by Which Estimated Fair Value Exceeds Carrying Value	500.50%
Connectivity Solutions [Member]
% by Which Estimated Fair Value Exceeds Carrying Value	156.00%
CUI Power [Member]
% by Which Estimated Fair Value Exceeds Carrying Value	43.60%