Restructuring (Narrative) (Details) - Employee severance	3 Months Ended		6 Months Ended	12 Months Ended
	Oct. 02, 2016 USD ($) employee	Jul. 03, 2016 USD ($) employee	Oct. 02, 2016 USD ($) employee	Apr. 03, 2016 USD ($) employee
Restructuring Cost and Reserve [Line Items]
Restructuring charges			$ 17,082,000
Payments for restructuring actions			3,548,000
Accrued balance for employee severance costs	$ 16,350,000		16,350,000	$ 2,816,000
Automotive and Industrial Division (AID) Plan
Restructuring Cost and Reserve [Line Items]
Restructuring charges			$ 5,500,000
Number of reduced headcount (employees) | employee			49
Payments for restructuring actions			$ 1,000,000
ZMDI
Restructuring Cost and Reserve [Line Items]
Restructuring charges				$ 6,900,000
Number of reduced headcount (employees) | employee				36
Payments for restructuring actions			900,000
Accrued balance for employee severance costs	200,000		200,000
Radio Frequency (RF) Plan
Restructuring Cost and Reserve [Line Items]
Restructuring charges	2,200,000		$ 7,400,000
Number of reduced headcount (employees) | employee			13
Other Restructuring Plan Q1 FY 17
Restructuring Cost and Reserve [Line Items]
Restructuring charges	$ 2,800,000	$ 1,200,000
Number of reduced headcount (employees) | employee	57	9
Payments for restructuring actions			$ 1.0
Accrued balance for employee severance costs	$ 2,700,000		2,700,000
Other Restructuring Plan Q2 FY 17
Restructuring Cost and Reserve [Line Items]
Accrued balance for employee severance costs	$ 200,000		$ 200,000
Former executives | ZMDI
Restructuring Cost and Reserve [Line Items]
Number of reduced headcount (employees) | employee				2