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Note 4 - Revenue - Disaggregation of Revenue by Major Categories and Geographic Location (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Net sales	$ 521,027	$ 378,316	$ 348,967
UNITED STATES
Net sales	381,306	260,683	246,913
Non-US [Member]
Net sales	139,721	117,633	102,054
Pumps and Pump Systems [Member]
Net sales	458,890	321,263	300,906
Repair Parts for Pumps and Pump Systems and Other [Member]
Net sales	$ 62,137	$ 57,053	$ 48,061

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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