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Note 3 - Revenue - Disaggregation of Revenue by Product Group and Sales Channel (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020
Revenue	$ 146,966	$ 124,492	$ 396,351	$ 349,642
Sales Channel, Directly to Consumer [Member]
Revenue	97,652	84,381	264,761	236,868
Sales Channel, Through Intermediary [Member]
Revenue	49,314	40,111	131,590	112,774
Connectivity Solutions [Member]
Revenue	40,344	38,535	121,446	116,543
Connectivity Solutions [Member] | Sales Channel, Directly to Consumer [Member]
Revenue	23,476	24,806	72,898	73,459
Connectivity Solutions [Member] | Sales Channel, Through Intermediary [Member]
Revenue	16,868	13,729	48,548	43,084
Power Solutions and Protection [Member]
Revenue	60,281	47,793	159,312	129,082
Power Solutions and Protection [Member] | Sales Channel, Directly to Consumer [Member]
Revenue	36,154	29,648	96,759	78,119
Power Solutions and Protection [Member] | Sales Channel, Through Intermediary [Member]
Revenue	24,127	18,145	62,553	50,963
Magnetic Solutions [Member]
Revenue	46,341	38,164	115,593	104,017
Magnetic Solutions [Member] | Sales Channel, Directly to Consumer [Member]
Revenue	38,022	29,927	95,104	85,290
Magnetic Solutions [Member] | Sales Channel, Through Intermediary [Member]
Revenue	8,319	8,237	20,489	18,727
North America [Member]
Revenue	83,546	68,814	230,585	192,081
North America [Member] | Connectivity Solutions [Member]
Revenue	30,144	28,933	92,868	86,244
North America [Member] | Power Solutions and Protection [Member]
Revenue	42,064	31,770	109,708	83,522
North America [Member] | Magnetic Solutions [Member]
Revenue	11,338	8,111	28,009	22,315
Europe [Member]
Revenue	20,230	18,144	57,652	55,459
Europe [Member] | Connectivity Solutions [Member]
Revenue	7,916	7,458	22,220	23,576
Europe [Member] | Power Solutions and Protection [Member]
Revenue	9,679	8,714	29,306	26,993
Europe [Member] | Magnetic Solutions [Member]
Revenue	2,635	1,972	6,126	4,890
Asia [Member]
Revenue	43,190	37,534	108,114	102,102
Asia [Member] | Connectivity Solutions [Member]
Revenue	2,284	2,144	6,358	6,723
Asia [Member] | Power Solutions and Protection [Member]
Revenue	8,538	7,309	20,298	18,567
Asia [Member] | Magnetic Solutions [Member]
Revenue	$ 32,368	$ 28,081	$ 81,458	$ 76,812

X

- Definition

Amount, excluding tax collected from customer, of revenue from satisfaction of performance obligation by transferring promised good or service to customer. Tax collected from customer is tax assessed by governmental authority that is both imposed on and concurrent with specific revenue-producing transaction, including, but not limited to, sales, use, value added and excise.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
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-URI http://asc.fasb.org/extlink&oid=123351226&loc=SL49130545-203045

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 924
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-Section S99
-Paragraph 1
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-URI http://asc.fasb.org/extlink&oid=6472922&loc=d3e499488-122856

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