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Note 7 - Segment Reporting - Net Sales by Products and Services (Details) - USD ($) $ in Thousands	3 Months Ended								12 Months Ended
	Dec. 31, 2023	Sep. 30, 2023	Jun. 30, 2023	Mar. 31, 2023	Dec. 31, 2022	Sep. 30, 2022	Jun. 30, 2022	Mar. 31, 2022	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Net sales	$ 1,063,670	$ 1,070,667	$ 1,000,420	$ 887,910	$ 1,049,232	$ 1,088,258	$ 1,291,391	$ 1,135,856	$ 4,022,667	$ 4,564,737	$ 3,737,184
Domestic [Member]
Net sales									3,276,324	3,867,866	3,164,050
International [Member]
Net sales									746,343	696,871	573,134
Residential Power Products [Member]
Net sales									2,062,929	2,911,871	2,456,765
Residential Power Products [Member] | Domestic [Member]
Net sales									1,945,273	2,782,037	2,366,908
Residential Power Products [Member] | International [Member]
Net sales									117,656	129,834	89,857
Commercial and Industrial Power Products [Member]
Net sales									1,494,799	1,260,737	998,998
Commercial and Industrial Power Products [Member] | Domestic [Member]
Net sales									916,118	746,172	556,520
Commercial and Industrial Power Products [Member] | International [Member]
Net sales									578,681	514,565	442,478
Other Products and Services [Member]
Net sales									464,939	392,129	281,421
Other Products and Services [Member] | Domestic [Member]
Net sales									414,933	339,657	240,622
Other Products and Services [Member] | International [Member]
Net sales									$ 50,006	$ 52,472	$ 40,799

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
-Topic 924
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Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Topic 606
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Reference 3: http://www.xbrl.org/2003/role/disclosureRef
-Topic 280
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-URI https://asc.fasb.org//1943274/2147482810/280-10-50-30

Reference 4: http://www.xbrl.org/2003/role/disclosureRef
-Topic 280
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Reference 5: http://www.xbrl.org/2003/role/disclosureRef
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Reference 6: http://www.xbrl.org/2003/role/disclosureRef
-Topic 280
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Reference 7: http://www.xbrl.org/2003/role/disclosureRef
-Topic 280
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Reference 8: http://www.xbrl.org/2003/role/disclosureRef
-Topic 280
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Reference 9: http://www.xbrl.org/2003/role/disclosureRef
-Topic 280
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Reference 10: http://www.xbrl.org/2003/role/disclosureRef
-Topic 280
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Reference 11: http://www.xbrl.org/2003/role/disclosureRef
-Topic 606
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