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Note 3 - Revenue - Disaggregation of Revenue by Major Categories and Geographic Location (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2022	Mar. 31, 2021
Net sales	$ 102,167	$ 89,027
UNITED STATES
Net sales	72,391	62,619
Non-US [Member]
Net sales	29,776	26,408
Pumps and Pump Systems [Member]
Net sales	85,769	75,301
Repair Parts for Pumps and Pump Systems and Other [Member]
Net sales	$ 16,398	$ 13,726

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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