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Note 10 - Goodwill and Other Intangible Assets (Details Textual) - USD ($)
$ in Thousands
 12 Months Ended
Dec. 31, 2023
Dec. 31, 2022
Dec. 31, 2021
Amortization of Intangible Assets $ 12,600 $ 7,600 $ 800
Goodwill, Impairment Loss $ 0 0 $ 0
Reporting Unit Measurement, Hypothetical Decrease in Expected Long-term Growth Rate 1.00%    
Reporting Unit Measurement, Hypothetical Increase in Weighted Average Cost of Capital 1.00%    
Goodwill $ 257,721 $ 257,724  
National Reporting Unit [Member]      
Goodwill $ 13,600    
Reporting Unit, Percentage of Parent Company Total Assets 1.50%    
Fill-Rite [Member]      
Goodwill $ 230,700    
Reporting Unit, Percentage of Parent Company Total Assets 25.90%    
National Pump Company [Member]      
Goodwill, Impairment Loss $ 0    
Fill-Rite [Member]      
Goodwill, Impairment Loss 0    
Other Segments [Member]      
Goodwill, Impairment Loss $ 0