Cash, Cash Equivalents, and Investments - Gross Unrealized Losses and Fair Values for Available-for-Sale Investments (Detail) $ in Thousands	Jul. 05, 2015 USD ($)
Schedule of Available-for-sale Securities [Line Items]
Fair value, less than 12 months	$ 127,842
Unrealized losses, less than 12 months	(307)
Fair value, 12 months or greater	3,389
Unrealized losses, 12 months or greater	(9)
Total fair value	131,231
Total unrealized losses	(316)
Corporate Bonds
Schedule of Available-for-sale Securities [Line Items]
Fair value, less than 12 months	101,856
Unrealized losses, less than 12 months	(287)
Fair value, 12 months or greater	1,463
Unrealized losses, 12 months or greater	(6)
Total fair value	103,319
Total unrealized losses	(293)
Asset-Backed Securities
Schedule of Available-for-sale Securities [Line Items]
Fair value, less than 12 months	20,783
Unrealized losses, less than 12 months	(17)
Fair value, 12 months or greater	1,926
Unrealized losses, 12 months or greater	(3)
Total fair value	22,709
Total unrealized losses	(20)
Treasury Bills
Schedule of Available-for-sale Securities [Line Items]
Fair value, less than 12 months	5,203
Unrealized losses, less than 12 months	(3)
Fair value, 12 months or greater	0
Unrealized losses, 12 months or greater	0
Total fair value	5,203
Total unrealized losses	$ (3)