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Goodwill and intangible assets (Details Textuals) (USD $)
In Thousands, unless otherwise specified
12 Months Ended
Jun. 29, 2013
Jun. 30, 2012
Jul. 02, 2011
Goodwill and Intangible Assets Disclosure [Abstract]      
Write-down due to exit of business $ (5,408)    
Intangible Assets, Weighted Average Useful Life 8 years    
Intangible asset amortization expense $ 32,343 $ 27,717 $ 21,240