Financial Instruments - Available-for-Sale and Trading Securities (Detail) (USD $) In Thousands, unless otherwise specified	Jun. 30, 2013	Jul. 01, 2012
Schedule of Available-for-sale Securities [Line Items]
Available-for-sale securities, Amortized Cost	$ 55,083	$ 47,930
Available-for-sale securities, Gross Unrealized Gains (Losses)	(154)
Available-for-sale securities, Fair Value	54,929	47,930
Money market funds [Member]
Schedule of Available-for-sale Securities [Line Items]
Available-for-sale securities, Amortized Cost	8,798	8,650
Available-for-sale securities, Gross Unrealized Gains (Losses)
Available-for-sale securities, Fair Value	8,798	8,650
Corporate debt securities and certificates of deposits [Member]
Schedule of Available-for-sale Securities [Line Items]
Available-for-sale securities, Amortized Cost	35,171	23,705
Available-for-sale securities, Gross Unrealized Gains (Losses)	(137)	(2)
Available-for-sale securities, Fair Value	35,034	23,703
Government sponsored enterprise debt securities [Member]
Schedule of Available-for-sale Securities [Line Items]
Available-for-sale securities, Amortized Cost	8,263	12,513
Available-for-sale securities, Gross Unrealized Gains (Losses)	(17)	2
Available-for-sale securities, Fair Value	8,246	12,515
Mutual funds [Member]
Schedule of Available-for-sale Securities [Line Items]
Available-for-sale securities, Amortized Cost	2,851	3,062
Available-for-sale securities, Gross Unrealized Gains (Losses)
Available-for-sale securities, Fair Value	$ 2,851	$ 3,062