Goodwill and Intangible Assets-Goodwill Rollforward (Details) $ in Thousands	12 Months Ended
Apr. 02, 2017 USD ($) Segment	Apr. 03, 2016 USD ($)
Goodwill [Line Items]
Number of Reportable Segments \| Segment	3
Goodwill, beginning of period	$ 97,724	$ 11,750
Goodwill, Period Increase (Decrease)	(168)	85,974
Goodwill, end of period	97,556	97,724
Industrial [Member]
Goodwill [Line Items]
Goodwill, beginning of period	6,495	6,495
Goodwill, Period Increase (Decrease)	0	0
Goodwill, end of period	6,495	6,495
Water Treatment [Member]
Goodwill [Line Items]
Goodwill, beginning of period	7,000	5,255
Goodwill, Period Increase (Decrease)	0	1,745
Goodwill, end of period	7,000	7,000
Health and Nutrition [Member]
Goodwill [Line Items]
Goodwill, beginning of period	84,229	0
Goodwill, Period Increase (Decrease)	(168)	84,229
Goodwill, end of period	$ 84,061	$ 84,229

Amount after accumulated impairment loss of an asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized.

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 350
-SubTopic 20
-Section 50
-Paragraph 1
-URI http://asc.fasb.org/extlink&oid=35741047&loc=d3e13816-109267

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 350
-SubTopic 20
-Section 45
-Paragraph 1
-URI http://asc.fasb.org/extlink&oid=6388280&loc=d3e13770-109266

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