Business segment (Tables)

6 Months Ended

Jul. 31, 2014

Business segment reporting [Abstract]

Business segment reporting [Table Text Block]



	Three Months Ended July 31,						Six Months Ended July 31,
	2014			2013			2014			2013
Net sales
Piping Systems		$33,789			$43,478			$76,143			$79,536
Filtration Products	19,581			17,324			36,751			35,957
Total		$53,370			$60,802			$112,894			$115,493
Gross profit
Piping Systems		$7,846			$10,590			$21,304			$21,034
Filtration Products	2,699			2,841			5,230			5,116
Total		$10,545			$13,431			$26,534			$26,150
Income (loss) from operations
Piping Systems		$3,783			$6,493			$11,800			$11,873
Filtration Products	(30		)	501			(574		)	18
Corporate	(1,958		)	(2,224		)	(3,722		)	(4,588		)
Total		$1,795			$4,770			$7,504			$7,303

- Definition

Tabular disclosure of the profit or loss and total assets for each reportable segment. An entity discloses certain information on each reportable segment if the amounts (a) are included in the measure of segment profit or loss reviewed by the chief operating decision maker or (b) are otherwise regularly provided to the chief operating decision maker, even if not included in that measure of segment profit or loss.

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