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Note 7 - Segment Reporting - Net Sales by Products and Services (Details) - USD ($)
$ in Thousands
3 Months Ended
Mar. 31, 2022
Mar. 31, 2021
Net sales $ 1,135,856 $ 807,434
Residential Power Products [Member]    
Net sales 776,944 542,149
Commercial and Industrial Power Products [Member]    
Net sales 278,728 202,391
Other Products and Services [Member]    
Net sales 80,184 62,894
Domestic [Member]    
Net sales 964,674 692,738
Domestic [Member] | Residential Power Products [Member]    
Net sales 750,327 522,215
Domestic [Member] | Commercial and Industrial Power Products [Member]    
Net sales 145,737 117,879
Domestic [Member] | Other Products and Services [Member]    
Net sales 68,610 52,644
International [Member]    
Net sales 171,182 114,696
International [Member] | Residential Power Products [Member]    
Net sales 26,617 19,934
International [Member] | Commercial and Industrial Power Products [Member]    
Net sales 132,991 84,512
International [Member] | Other Products and Services [Member]    
Net sales $ 11,574 $ 10,250