Segment Information (Details Textual) $ in Thousands	3 Months Ended	9 Months Ended
	Jan. 01, 2017 USD ($)	Jan. 01, 2017 USD ($) Segment Customer
Segment Reporting Information [Line Items]
Number of reportable segments (segments) | Segment		3
Intersegment sales		$ 0
Number of operating segments aggregated (segments) | Segment		0
Number of customer representing 10 percent or more of revenue (customers) | Customer		0
Scenario, Actual [Member] | Health and Nutrition [Member]
Segment Reporting Information [Line Items]
Corporate expenses allocated to segments	$ 500	$ 1,500
Scenario, Plan [Member] | Industrial [Member]
Segment Reporting Information [Line Items]
Corporate expenses allocated to segments	300	900
Scenario, Plan [Member] | Water Treatment [Member]
Segment Reporting Information [Line Items]
Corporate expenses allocated to segments	$ 200	$ 600