Note 14 - Segments - Net Sales to External Customers by Geographic Area and by Major Product Line (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022
Net sales	$ 639,813	$ 654,233
Power Solutions and Protection [Member]
Net sales	314,105	288,366
Connectivity Solutions [Member]
Net sales	210,572	187,085
Magnetic Solutions [Member]
Net sales	115,136	178,782
UNITED STATES
Net sales	447,793	409,199
CHINA
Net sales	43,109	77,061
MACAO
Net sales	35,026	61,744
UNITED KINGDOM
Net sales	25,648	21,903
SLOVAKIA
Net sales	35,555	22,120
GERMANY
Net sales	17,327	24,112
INDIA
Net sales	15,365	17,608
SWITZERLAND
Net sales	11,237	9,893
All Other Foreign Countries [Member]
Net sales	$ 8,753	$ 10,593