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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

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