Segment Information - Revenues (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Dec. 31, 2017	Jan. 01, 2017	Dec. 31, 2017	Jan. 01, 2017
Segment Reporting Information [Line Items]
Revenues	$ 217,075	$ 176,358	$ 618,186	$ 552,545
Hong Kong
Segment Reporting Information [Line Items]
Revenues	84,036	62,565	218,733	198,215
Korea
Segment Reporting Information [Line Items]
Revenues	21,867	17,061	61,304	52,576
Rest of Asia Pacific
Segment Reporting Information [Line Items]
Revenues	62,112	51,456	189,430	172,581
Americas
Segment Reporting Information [Line Items]
Revenues	21,818	20,752	65,121	58,392
Europe
Segment Reporting Information [Line Items]
Revenues	27,242	24,524	83,598	70,781
United States
Segment Reporting Information [Line Items]
Revenues	15,800	19,400	52,800	53,600
Communications
Segment Reporting Information [Line Items]
Revenues	63,614	65,978	185,432	210,172
Computing, Consumer and Industrial
Segment Reporting Information [Line Items]
Revenues	$ 153,461	$ 110,380	$ 432,754	$ 342,373