Cash, Cash Equivalents, and Investments - Gross Unrealized Losses and Fair Values for Available-for-Sale Investments (Detail) (USD $) In Thousands, unless otherwise specified	Jun. 29, 2014
Schedule of Available-for-sale Securities [Line Items]
Fair Value, Less than 12 Months	$ 49,563
Unrealized Losses, Less than 12 Months	(21)
Fair Value, 12 Months or Greater	7,408
Unrealized Losses, 12 Months or Greater	(26)
Total Fair Value	56,971
Total Unrealized Losses	(47)
Corporate Bonds
Schedule of Available-for-sale Securities [Line Items]
Fair Value, Less than 12 Months	19,003
Unrealized Losses, Less than 12 Months	(15)
Fair Value, 12 Months or Greater	1,729
Unrealized Losses, 12 Months or Greater	(1)
Total Fair Value	20,732
Total Unrealized Losses	(16)
Treasury Bills
Schedule of Available-for-sale Securities [Line Items]
Fair Value, Less than 12 Months	19,147
Unrealized Losses, Less than 12 Months	(2)
Fair Value, 12 Months or Greater	0
Unrealized Losses, 12 Months or Greater	0
Total Fair Value	19,147
Total Unrealized Losses	(2)
Asset-Backed Securities
Schedule of Available-for-sale Securities [Line Items]
Fair Value, Less than 12 Months	8,050
Unrealized Losses, Less than 12 Months	(2)
Fair Value, 12 Months or Greater	5,679
Unrealized Losses, 12 Months or Greater	(25)
Total Fair Value	13,729
Total Unrealized Losses	(27)
Sovereign Bonds
Schedule of Available-for-sale Securities [Line Items]
Fair Value, Less than 12 Months	3,363
Unrealized Losses, Less than 12 Months	(2)
Fair Value, 12 Months or Greater	0
Unrealized Losses, 12 Months or Greater	0
Total Fair Value	3,363
Total Unrealized Losses	$ (2)