Note 4 - Goodwill and Other Intangible Assets - Estimated Fair Values Over Carrying Value, Including Goodwill (Details) - Europe [Member]	Dec. 31, 2022
Cinch Connectivity Solutions Segment [Member]
% by Which Estimated Fair Value Exceeds Carrying Value	69.00%
Power Solutions and Protection Segment [Member]
% by Which Estimated Fair Value Exceeds Carrying Value	84.40%
CUI Power [Member]
% by Which Estimated Fair Value Exceeds Carrying Value	172.90%