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Note 3 - Revenue - Disaggregation of Revenue by Product Group and Sales Channel (Details) - USD ($) $ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2020 | Dec. 31, 2019
Net sales | $ 465,771 | $ 492,412
Sales Channel, Directly to Consumer [Member] |  |
Net sales | 318,150 | 356,613
Sales Channel, Through Intermediary [Member] |  |
Net sales | 147,621 | 135,799
Connectivity Solutions [Member] |  |
Net sales | 150,731 | 172,348
Connectivity Solutions [Member] | Sales Channel, Directly to Consumer [Member] |  |
Net sales | 95,853 | 113,115
Connectivity Solutions [Member] | Sales Channel, Through Intermediary [Member] |  |
Net sales | 54,878 | 59,233
Power Solutions and Protection [Member] |  |
Net sales | 181,488 | 163,528
Power Solutions and Protection [Member] | Sales Channel, Directly to Consumer [Member] |  |
Net sales | 113,570 | 110,587
Power Solutions and Protection [Member] | Sales Channel, Through Intermediary [Member] |  |
Net sales | 67,918 | 52,941
Magnetic Solutions [Member] |  |
Net sales | 133,552 | 156,536
Magnetic Solutions [Member] | Sales Channel, Directly to Consumer [Member] |  |
Net sales | 108,727 | 132,911
Magnetic Solutions [Member] | Sales Channel, Through Intermediary [Member] |  |
Net sales | 24,825 | 23,625
North America [Member] |  |
Net sales | 265,676 | 256,044
North America [Member] | Connectivity Solutions [Member] |  |
Net sales | 112,663 | 128,096
North America [Member] | Power Solutions and Protection [Member] |  |
Net sales | 123,014 | 93,540
North America [Member] | Magnetic Solutions [Member] |  |
Net sales | 29,999 | 34,408
Europe [Member] |  |
Net sales | 70,792 | 81,622
Europe [Member] | Connectivity Solutions [Member] |  |
Net sales | 30,017 | 33,099
Europe [Member] | Power Solutions and Protection [Member] |  |
Net sales | 34,447 | 41,016
Europe [Member] | Magnetic Solutions [Member] |  |
Net sales | 6,328 | 7,507
Asia [Member] |  |
Net sales | 129,303 | 154,746
Asia [Member] | Connectivity Solutions [Member] |  |
Net sales | 8,051 | 11,153
Asia [Member] | Power Solutions and Protection [Member] |  |
Net sales | 24,027 | 28,972
Asia [Member] | Magnetic Solutions [Member] |  |
Net sales | $ 97,225 | $ 114,621

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- 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 -Topic 280 -SubTopic 10 -Section 50 -Paragraph 30 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=120311839&loc=d3e8906-108599 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 40 -URI http://asc.fasb.org/extlink&oid=120311839&loc=d3e9031-108599 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 41 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=120311839&loc=d3e9038-108599 Reference 4: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 32 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=120311839&loc=d3e8933-108599 Reference 5: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 32 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=120311839&loc=d3e8933-108599 Reference 6: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 606 -SubTopic 10 -Section 50 -Paragraph 4 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=121604090&loc=SL49130543-203045 Reference 7: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 22 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=120311839&loc=d3e8736-108599 Reference 8: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 22 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=120311839&loc=d3e8736-108599 Reference 9: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 42 -URI http://asc.fasb.org/extlink&oid=120311839&loc=d3e9054-108599 Reference 10: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 606 -SubTopic 10 -Section 50 -Paragraph 5 -URI http://asc.fasb.org/extlink&oid=121604090&loc=SL49130545-203045 Reference 11: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 924 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SAB Topic 11.L) -URI http://asc.fasb.org/extlink&oid=6472922&loc=d3e499488-122856 + Details
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