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Note 10 - Goodwill and Other Intangible Assets (Details Textual) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Amortization of Intangible Assets		$ 12,400	$ 12,600	$ 7,600
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	$ 257,554	$ 257,721	$ 257,721
National Reporting Unit [Member]
Goodwill		$ 13,600
Reporting Unit, Percentage of Parent Company Total Assets		1.60%
Fill-Rite [Member]
Goodwill		$ 230,700
Reporting Unit, Percentage of Parent Company Total Assets		26.90%
National Pump Company [Member]
Goodwill, Impairment Loss		$ 0
Fill-Rite [Member]
Goodwill, Impairment Loss		0
Other Operating Segment [Member]
Goodwill, Impairment Loss		$ 0

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- Definition

Percentage of hypothetical decrease in excepted long-term growth rate for reporting unit measurement.

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