Note 5 - Goodwill and Other Intangible Assets - Goodwill (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2023	Jan. 01, 2023	Dec. 31, 2022
Goodwill, gross	$ 26,642	$ 25,099
Goodwill, net	26,642	25,099	$ 25,099
Foreign currency translation	1,543
Power Solutions and Protection Segment [Member]
Goodwill, gross	18,623	18,152
Goodwill, net	18,623	18,152
Foreign currency translation	471
Connectivity Solutions [Member]
Goodwill, gross	8,019	6,947
Goodwill, net	8,019	6,947
Foreign currency translation	1,072
Magnetic Solutions Segment [Member]
Goodwill, gross	0	0
Goodwill, net	0	$ 0
Foreign currency translation	$ 0