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Note 3 - Revenue (Tables)

3 Months Ended

Mar. 31, 2019

Notes Tables

Disaggregation of Revenue [Table Text Block]

		Product Category
		March 31, 2019				March 31, 2018
Pumps and pump systems		$	82,522			$	80,484
Repair parts for pumps and pump systems and other			14,337				16,120
Total net sales		$	96,859			$	96,604

		Geographic Location
		March 31, 2019				March 31, 2018
United States		$	67,702			$	64,434
Foreign countries			29,157				32,170
Total net sales		$	96,859			$	96,604

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

		March 31, 201 9				December 31 , 201 8
Contract assets		$	1,456			$	1,953
Contract liabilities		$	6,000			$	5,232

X

- Definition

Tabular disclosure of contract balances and changes in contract balances.

+ 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 http://asc.fasb.org/extlink&oid=118956577&loc=SL49130551-203045

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- 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 http://asc.fasb.org/extlink&oid=118956577&loc=SL49130545-203045

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