Goodwill and intangible assets Intangible Assets (Details 1) (USD $) In Thousands, unless otherwise specified	Sep. 27, 2014	Jun. 28, 2014
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	$ 333,826	$ 344,322
Accumulated Amortization	(166,562)	(160,014)
Net Book Value	167,264	184,308
Customer Relationships [Member]
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	310,254	319,496
Accumulated Amortization	(162,171)	(155,604)
Net Book Value	148,083	163,892
Trade Names [Member]
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	5,721	5,993
Accumulated Amortization	(1,562)	(1,555)
Net Book Value	4,159	4,438
Other [Member]
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	17,851	18,833
Accumulated Amortization	(2,829)	(2,855)
Net Book Value	$ 15,022	$ 15,978