Restructuring - Narrative (Details) $ in Thousands	12 Months Ended
	Apr. 02, 2017 USD ($) employee	Apr. 03, 2016 USD ($) employee	Mar. 29, 2015 USD ($) employee	Apr. 01, 2018 USD ($)	Mar. 30, 2014 USD ($)
Restructuring Cost and Reserve [Line Items]
Restructuring charges	$ 16,409	$ 11,632	$ 19,383
Payments for restructuring	13,884	19,538	7,494
Restructuring accrued balance	4,841	2,816	10,512		$ 638
Employee Severance | Automotive and Industrial Division (AID) Plan
Restructuring Cost and Reserve [Line Items]
Restructuring charges	$ 5,000
Number of positions eliminated | employee	49
Payments for restructuring	$ 4,900
Employee Severance | Zentrum Mikroelektronik Dresden AG
Restructuring Cost and Reserve [Line Items]
Restructuring charges		$ 6,900
Number of positions eliminated | employee		36
Payments for restructuring	$ 1,200	$ 5,700
Employee Severance | Radio Frequency (RF) Plan
Restructuring Cost and Reserve [Line Items]
Number of positions eliminated | employee	13
Payments for restructuring	$ 4,100
Restructuring accrued balance	2,900
Employee Severance | Other Restructuring Plan
Restructuring Cost and Reserve [Line Items]
Restructuring charges	4,000		1,100
Payments for restructuring	3,600		600
Restructuring accrued balance	400
Employee Severance | Other Restructuring Plan, 2016 Restructuring
Restructuring Cost and Reserve [Line Items]
Restructuring charges	$ 7,500	$ 4,700
Number of positions eliminated | employee	59	48
Payments for restructuring	$ 100	$ 4,600
Employee Severance | Other Restructuring Plan, 2015 Restructuring
Restructuring Cost and Reserve [Line Items]
Restructuring charges			$ 1,100
Number of positions eliminated | employee			28
Payments for restructuring		$ 300	$ 800
Executive | Employee Severance | Zentrum Mikroelektronik Dresden AG
Restructuring Cost and Reserve [Line Items]
Number of positions eliminated | employee		2
High-Speed Converter Business
Restructuring Cost and Reserve [Line Items]
Restructuring charges	0	$ 0	18,305
Payments for restructuring	83	8,877	6,073
Restructuring accrued balance	1,427	$ 1,534	10,217		$ 0
High-Speed Converter Business | Employee Severance
Restructuring Cost and Reserve [Line Items]
Restructuring charges			$ 18,300
Number of positions eliminated | employee			53
Restructuring accrued balance	$ 1,400
Scenario, Forecast | Employee Severance | Automotive and Industrial Division (AID) Plan
Restructuring Cost and Reserve [Line Items]
Restructuring accrued balance				$ 100