Goodwill and Intangible Assets (Narrative) (Details) - USD ($)	6 Months Ended
	Jan. 01, 2017	Jul. 03, 2016
Goodwill And Intangible Assets [Line Items]
Intangible assets	$ 17,100,000	$ 17,100,000
Remaining amortization period	5 years
Dust Networks [Member]
Goodwill And Intangible Assets [Line Items]
Goodwill	$ 2,200,000
Change in goodwill	0
Intellectual property [Member]
Goodwill And Intangible Assets [Line Items]
Intangible assets	13,100,000	13,100,000
Customer relationships [Member]
Goodwill And Intangible Assets [Line Items]
Intangible assets	$ 4,000,000	$ 4,000,000
Minimum [Member]
Goodwill And Intangible Assets [Line Items]
Intangible assets useful life	5 years
Maximum [Member]
Goodwill And Intangible Assets [Line Items]
Intangible assets useful life	10 years