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Note 3 - Revenue (Tables)

3 Months Ended

Mar. 31, 2022

Notes Tables

Disaggregation of Revenue [Table Text Block]

		Product Category
		March 31, 2022				March 31, 2021
Pumps and pump systems		$	85,769			$	75,301
Repair parts for pumps and pump systems and other			16,398				13,726
Total net sales		$	102,167			$	89,027

		Geographic Location
		March 31, 2022				March 31, 2021
United States		$	72,391			$	62,619
Foreign countries			29,776				26,408
Total net sales		$	102,167			$	89,027

Contract with Customer, Contract Asset, Contract Liability, and Receivable [Table Text Block]

		March 31, 2022				December 31, 2021
Contract assets		$	-			$	-
Contract liabilities		$	10,434			$	9,200

X

- Definition

Tabular disclosure of receivable, contract asset, and contract liability from contract with customer. Includes, but is not limited to, change in contract asset and contract liability.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 606
-SubTopic 10
-Section 50
-Paragraph 10
-URI https://asc.fasb.org/extlink&oid=126920106&loc=SL49130551-203045

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X

- Definition

Tabular disclosure of disaggregation of revenue into categories depicting how nature, amount, timing, and uncertainty of revenue and cash flows are affected by economic factor.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 606
-SubTopic 10
-Section 50
-Paragraph 5
-URI https://asc.fasb.org/extlink&oid=126920106&loc=SL49130545-203045

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X

- References

No definition available.

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Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration