Goodwill and Intangible Assets, Net - Goodwill by Segment (Details) $ in Thousands	9 Months Ended
	Dec. 31, 2017 USD ($)
Goodwill [Roll Forward]
Balance as of April 2, 2017	$ 306,925
Balance as of December 31, 2017	420,117
Communications
Goodwill [Roll Forward]
Balance as of April 2, 2017	122,687
Balance as of December 31, 2017	141,300
Computing, Consumer and Industrial
Goodwill [Roll Forward]
Balance as of April 2, 2017	184,238
Balance as of December 31, 2017	278,817
GigPeak, Inc.
Goodwill [Roll Forward]
Additions - GigPeak acquisition	113,192
Balance as of December 31, 2017	113,192
GigPeak, Inc. | Communications
Goodwill [Roll Forward]
Additions - GigPeak acquisition	18,613
GigPeak, Inc. | Computing, Consumer and Industrial
Goodwill [Roll Forward]
Additions - GigPeak acquisition	$ 94,579