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Note 7 - Segment Reporting - Net Sales by Products and Services (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2025	Dec. 31, 2024	Dec. 31, 2023
Net sales	$ 4,209,147	$ 4,295,834	$ 4,022,667
Domestic [Member]
Net sales	3,470,966	3,599,149	3,276,324
International [Member]
Net sales	738,181	696,685	746,343
Residential Power Products [Member]
Net sales	2,266,912	2,433,474	2,062,929
Residential Power Products [Member] | Domestic [Member]
Net sales	2,182,105	2,352,629	1,945,273
Residential Power Products [Member] | International [Member]
Net sales	84,807	80,845	117,656
Commercial and Industrial Power Products [Member]
Net sales	1,457,385	1,389,469	1,494,799
Commercial and Industrial Power Products [Member] | Domestic [Member]
Net sales	863,762	828,586	916,118
Commercial and Industrial Power Products [Member] | International [Member]
Net sales	593,623	560,883	578,681
Other Products and Services [Member]
Net sales	484,850	472,891	464,939
Other Products and Services [Member] | Domestic [Member]
Net sales	425,099	417,934	414,933
Other Products and Services [Member] | International [Member]
Net sales	$ 59,751	$ 54,957	$ 50,006

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.

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