Commitments and Contingencies (Details) £ in Millions	3 Months Ended		9 Months Ended
	Mar. 31, 2018 USD ($)	Apr. 01, 2017 USD ($)	Mar. 31, 2018 USD ($)	Apr. 01, 2017 USD ($)	Mar. 31, 2018 GBP (£)	Jul. 01, 2017 USD ($)	Jul. 02, 2016 GBP (£)
Loss Contingencies [Line Items]
Guarantee liabilities	$ 0		$ 0			$ 0
Standby letters of credit	11,300,000		$ 11,300,000
Product Warranties
Warranty Term for most products			3 years
Changes in warranty reserve
Balance as of beginning of period	6,800,000	$ 5,300,000	$ 5,800,000	$ 4,900,000
Provision for warranty	800,000	1,300,000	3,000,000	4,500,000
Utilization of reserve	(600,000)	(800,000)	(4,100,000)	(2,800,000)
Adjustments related to pre-existing warranties (including changes in estimates)	200,000	(300,000)	2,200,000	(1,100,000)
Acquisition of Trilithic	1,000,000	0	1,300,000	0
Balance as of end of period	8,200,000	$ 5,500,000	8,200,000	$ 5,500,000
Performance bond
Loss Contingencies [Line Items]
Guarantee liabilities	1,700,000		1,700,000
Judicial ruling | Case related to amendment of pension for foreign subsidiary
Loss Contingencies [Line Items]
Loss contingency accrual	$ 8,400,000		$ 8,400,000		£ 6.0		£ 5.7