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Segment Information (Tables)
3 Months Ended
Jun. 29, 2014
Segment Reporting [Abstract]  
Summary of Segment Information
(In thousands)
 
Industrial
 
Water
Treatment
 
Total
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

Three months ended June 30, 2013:
 
 
 
 
 
 
Sales
 
$
67,031

 
$
27,713

 
$
94,744

Gross profit
 
9,222

 
8,009

 
17,231

Selling, general, and administrative expenses
 
5,434

 
3,536

 
8,970

Operating income
 
3,788

 
4,473

 
8,261