Segment Information (Tables)

12 Months Ended

Apr. 03, 2016

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		Health and Nutrition			Total
(In thousands)
Fiscal Year Ended April 3, 2016:
Sales	$	251,749	$	128,312	$	33,915		$	413,976
Gross profit	37,967		35,470		6,820			80,257
Selling, general, and administrative expenses	22,137		19,261		7,688			49,086
Operating income (loss)	15,830		16,209		(868		)	31,171
Identifiable assets*	$	158,015	$	50,013	$	195,939		$	403,967
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

* Unallocated assets, consisting primarily of cash and cash equivalents, investments and prepaid expenses, were $32.8 million at April 3, 2016, $53.7 million at March 29, 2015 and $66.7 million at March 30, 2014.