Goodwill and intangible assets Intangible Assets (Details 1) (USD $) In Thousands, unless otherwise specified	Sep. 28, 2013	Jun. 29, 2013
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	$ 293,047	$ 283,604
Accumulated Amortization	(121,804)	(111,392)
Net Book Value	171,243	172,212
Customer Relationships [Member]
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	285,945	276,107
Accumulated Amortization	(119,915)	(109,946)
Net Book Value	166,030	166,161
Trade Names [Member]
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	3,162	3,320
Accumulated Amortization	(1,016)	(480)
Net Book Value	2,146	2,840
Other [Member]
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	3,940	4,177
Accumulated Amortization	(873)	(966)
Net Book Value	$ 3,067	$ 3,211