Segment Information - Property Plant and Equipment (Details) - USD ($) $ in Thousands	Sep. 30, 2018	Apr. 01, 2018
Segment Reporting Information [Line Items]
Property, plant and equipment, net	$ 88,986	$ 86,845
United States
Segment Reporting Information [Line Items]
Property, plant and equipment, net	40,224	41,230
Malaysia
Segment Reporting Information [Line Items]
Property, plant and equipment, net	32,430	28,264
Germany
Segment Reporting Information [Line Items]
Property, plant and equipment, net	9,233	10,210
All other countries
Segment Reporting Information [Line Items]
Property, plant and equipment, net	$ 7,099	$ 7,141