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Note 3 - Revenue (Tables)

3 Months Ended

Mar. 31, 2018

Notes Tables

Disaggregation of Revenue [Table Text Block]

Product Category		March 31, 2018				March 31, 2017
Pumps and pump systems		$	80,484			$	77,556
Repair parts for pumps and pump systems and other			16,120				15,047
Total net sales		$	96,604			$	92,603

Geographic Location		March 31, 2018				March 31, 2017
United States		$	64,434			$	59,172
Foreign countries			32,170				33,431
Total net sales		$	96,604			$	92,603

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

		Beginning balances at December 31, 2017				Ending balances at March 31, 2018
Contract assets		$	-			$	126
Contract liabilities		$	4,098			$	4,967

X

- Definition

Tabular disclosure of contract balances and changes in contract balances.

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-Name Accounting Standards Codification
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+ References

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