Restructuring and Related Costs - Narrative (Details) $ in Thousands	3 Months Ended	12 Months Ended
	Jul. 01, 2018 USD ($)	Apr. 01, 2018 USD ($) employee	Apr. 02, 2017 USD ($) employee	Apr. 03, 2016 USD ($) employee	Mar. 29, 2015 USD ($) employee
Restructuring Cost and Reserve [Line Items]
Asset impairment		$ 9,800
GigPeak Restructuring Plan
Restructuring Cost and Reserve [Line Items]
Deferred Long-term Liability Charges		2,800
Accrued Liabilities		2,300
Employee Severance
Restructuring Cost and Reserve [Line Items]
Restructuring charges		7,847	$ 16,409	$ 11,632
Payments for restructuring		8,197	13,884	19,538
Restructuring accrued balance		$ 4,639	4,841	$ 2,816	$ 10,512
Employee Severance | GigPeak Restructuring Plan
Restructuring Cost and Reserve [Line Items]
Number of positions eliminated | employee		46
Restructuring charges		$ 2,700
Payments for restructuring			$ 2,100
Employee Severance | ZMDI
Restructuring Cost and Reserve [Line Items]
Number of positions eliminated | employee			49	36
Restructuring charges		$ 100	$ 5,000	$ 6,900
Payments for restructuring			$ 4,900	$ 5,700
Employee Severance | Other Restructuring Plan - 2018 Restructuring
Restructuring Cost and Reserve [Line Items]
Number of positions eliminated | employee		63
Restructuring charges		$ 5,100
Payments for restructuring		2,300
Asset impairment		7,800
Employee Severance | Workforce-Reduction Plan
Restructuring Cost and Reserve [Line Items]
Number of positions eliminated | employee			13
Restructuring charges			$ 7,500
Payments for restructuring		2,500	$ 4,200
Restructuring accrued balance		800
Employee Severance | Other Restructuring Plan - 2017 Restructuring
Restructuring Cost and Reserve [Line Items]
Number of positions eliminated | employee			59
Restructuring charges			$ 4,000
Employee Severance | Other Restructuring Plan, 2016 Restructuring
Restructuring Cost and Reserve [Line Items]
Number of positions eliminated | employee				48
Restructuring charges				$ 4,700
Payments for restructuring			100	$ 4,600
Executive | Employee Severance | ZMDI
Restructuring Cost and Reserve [Line Items]
Number of positions eliminated | employee				2
High-Speed Converter Business | Employee Severance
Restructuring Cost and Reserve [Line Items]
Restructuring charges		0	0	$ 0
Payments for restructuring		867	83	8,877
Restructuring accrued balance		626	1,427	1,534	$ 10,217
High-Speed Converter Business | Employee Severance | Other Restructuring Plan, 2015 Restructuring
Restructuring Cost and Reserve [Line Items]
Number of positions eliminated | employee					53
Restructuring charges					$ 18,300
Restructuring accrued balance		500
Scenario, Forecast | Employee Severance | GigPeak Restructuring Plan
Restructuring Cost and Reserve [Line Items]
Payments for restructuring	$ 600
Scenario, Forecast | Employee Severance | Other Restructuring Plan - 2018 Restructuring
Restructuring Cost and Reserve [Line Items]
Payments for restructuring	$ 2,800
Other Long Term Liabilities | GigPeak Restructuring Plan
Restructuring Cost and Reserve [Line Items]
Accrued Liabilities		1,600
Other Accrued Liabilities | GigPeak Restructuring Plan
Restructuring Cost and Reserve [Line Items]
Accrued Liabilities		700
Employee Severance | ZMDI
Restructuring Cost and Reserve [Line Items]
Payments for restructuring			1,200
Employee Severance | Other Restructuring Plan - 2017 Restructuring
Restructuring Cost and Reserve [Line Items]
Payments for restructuring		400	3,600
Cost of revenue | Other Restructuring Plan - 2018 Restructuring
Restructuring Cost and Reserve [Line Items]
Asset impairment		5,400
Cost of revenue | Employee Severance
Restructuring Cost and Reserve [Line Items]
Restructuring charges		416	2,605	435
Payments for restructuring		370	2,709	128
Restructuring accrued balance		247	201	307	0
Operating Expenses | Other Restructuring Plan - 2018 Restructuring
Restructuring Cost and Reserve [Line Items]
Asset impairment		2,400
Operating Expenses | Employee Severance
Restructuring Cost and Reserve [Line Items]
Restructuring charges		7,431	13,804	11,197
Payments for restructuring		6,960	11,092	10,533
Restructuring accrued balance		$ 3,766	$ 3,213	$ 975	$ 295