Goodwill and intangible assets Textuals (Details) - USD ($) $ in Thousands	3 Months Ended
	Oct. 01, 2016	Oct. 03, 2015	Jul. 02, 2016
Finite-Lived Intangible Assets [Line Items]
Weighted average life of intangible assets	3 years
Continuing and discontinued operations intangible asset amortization expense	$ 6,400	$ 6,900
Intangible asset amortization expense	1,930	$ 2,436
TS Business | Disposal Group, Held-for-sale, Not Discontinued Operations
Finite-Lived Intangible Assets [Line Items]
Intangible assets, net	$ 51,571		$ 55,826