Segment Information - Revenues (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Oct. 01, 2017	Oct. 02, 2016	Oct. 01, 2017	Oct. 02, 2016
Segment Reporting Information [Line Items]
Revenues	$ 204,398	$ 184,059	$ 401,111	$ 376,187
Hong Kong
Segment Reporting Information [Line Items]
Revenues	70,810	61,721	134,698	135,650
Korea
Segment Reporting Information [Line Items]
Revenues	21,275	18,809	39,437	35,515
Rest of Asia Pacific
Segment Reporting Information [Line Items]
Revenues	62,781	63,070	127,317	121,125
Americas
Segment Reporting Information [Line Items]
Revenues	17,508	17,187	43,303	37,640
Europe
Segment Reporting Information [Line Items]
Revenues	32,024	23,272	56,356	46,257
United States
Segment Reporting Information [Line Items]
Revenues	14,800	15,500	36,900	34,200
Communications
Segment Reporting Information [Line Items]
Revenues	63,992	65,374	121,818	144,194
Computing, Consumer and Industrial
Segment Reporting Information [Line Items]
Revenues	$ 140,406	$ 118,685	$ 279,293	$ 231,993