Segment Information (Tables)

3 Months Ended

Jun. 28, 2015

Segment Reporting [Abstract]

Summary of Segment Information

(In thousands)	Industrial		Water Treatment		Total
Three months ended June 28, 2015:
Sales	$	67,588	$	33,908	$	101,496
Gross profit	10,714		10,021		20,735
Selling, general and administrative expenses	5,199		4,692		9,891
Operating income	5,515		5,329		10,844
Three months ended June 29, 2014:
Sales	$	67,546	$	30,490	$	98,036
Gross profit	9,361		9,135		18,496
Selling, general and administrative expenses	5,099		3,776		8,875
Operating income	4,262		5,359		9,621