Note 4 - Goodwill and Other Intangible Assets - Goodwill (Details) - USD ($) $ in Thousands	12 Months Ended
Dec. 31, 2021	Jan. 01, 2021	Dec. 31, 2020
Goodwill, gross	$ 26,651	$ 23,966
Goodwill	26,651	23,966	$ 23,966
Goodwill allocation related to acquisition	2,499
Foreign currency translation	186
North America [Member] \| Cinch Connectivity Solutions Segment [Member]
Goodwill, gross	7,735	7,855
Goodwill	7,735	7,855
Goodwill allocation related to acquisition	0
Foreign currency translation	(120)
Asia [Member] \| Power Solutions and Protection Segment [Member]
Goodwill, gross	18,916	16,111
Goodwill	18,916	16,111
Goodwill allocation related to acquisition	2,499
Foreign currency translation	306
Europe [Member] \| Magnetic Solutions Segment [Member]
Goodwill, gross	0	0
Goodwill	0	$ 0
Goodwill allocation related to acquisition	0
Foreign currency translation	$ 0

Amount after accumulated impairment loss of an asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized.

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