Segment Information (Tables)

12 Months Ended

Mar. 29, 2015

Segment Reporting [Abstract]

Summary of Segment Information

Sales are primarily within the United States and all assets are located within the United States.

Reportable Segments	Industrial		Water Treatment		Total
(In thousands)
Fiscal Year Ended March 29, 2015:
Sales	$	249,066	$	114,957	$	364,023
Gross profit	33,619		32,172		65,791
Selling, general, and administrative expenses	19,793		15,582		35,375
Operating income	13,826		16,590		30,416
Identifiable assets*	$	151,157	$	42,860	$	194,017
Fiscal Year Ended March 30, 2014:
Sales	$	244,888	$	103,375	$	348,263
Gross profit	32,041		29,559		61,600
Selling, general, and administrative expenses	19,781		13,729		33,510
Operating income	12,260		15,830		28,090
Identifiable assets*	$	141,506	$	29,001	$	170,507
Fiscal Year Ended March 31, 2013:
Sales	$	248,556	$	101,831	$	350,387
Gross profit	28,878		28,058		56,936
Selling, general, and administrative expenses	19,923		11,683		31,606
Operating income	8,955		16,375		25,330
Identifiable assets*	$	143,827	$	25,448	$	169,275

* Unallocated assets, consisting primarily of cash and cash equivalents, investments and prepaid expenses, were $53.7 million at March 29, 2015, $66.7 million at March 30, 2014 and $52.9 million at March 31, 2013.