Acquisitions and divestitures (Details Textuals) (USD $)	6 Months Ended			3 Months Ended
	Dec. 28, 2013	Dec. 29, 2012	Dec. 29, 2012 Internix, inc [Member]	Dec. 28, 2013 Electronics Marketing [Member]	Dec. 28, 2013 Technology Solutions [Member]	Dec. 29, 2012 TS Asia [Member]
Business Acquisition [Line Items]
Goodwill	$ 79,578,000			$ 69,000,000	$ 10,600,000
Number of businesses acquired	3
Aggregate annualized revenue of acquired businesses	490,000,000
Cash paid for acquistions, net of cash acquired	116,882,000	170,960,000
Aggregate consideration for acquisitions	219,726,000
Contingent consideration, maximum additional payment	50,000,000
Gain on bargain purchase	0	31,350,000	33,000,000
Gain on bargain purchase per share on a diluted basis			$ 0.23
Gain (Loss) on disposition of business						1,700,000
Gain (Loss) on sale of business per share on a diluted basis						$ 0.01
Bargain purchase gain recognized		31,400,000
Divestiture of business, proceeds received from earn-out	$ 0	$ 3,613,000