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Note 3 - Revenue - Disaggregation of Revenue by Major Categories and Geographic Location (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2022	Jun. 30, 2021	Jun. 30, 2022	Jun. 30, 2021
Net sales	$ 119,067	$ 93,015	$ 221,234	$ 182,042
UNITED STATES
Net sales	85,375	64,478	157,766	127,097
Non-US [Member]
Net sales	33,692	28,537	63,468	54,945
Pumps and Pump Systems [Member]
Net sales	103,337	78,935	189,106	154,236
Repair Parts for Pumps and Pump Systems and Other [Member]
Net sales	$ 15,730	$ 14,080	$ 32,128	$ 27,806

X

- Definition

Amount, including 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.

+ References

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