Fair Value Measurements (Tables)

12 Months Ended

Jun. 30, 2018

Fair Value Disclosures [Abstract]

Fair Value, Measurement Inputs, Disclosure [Table Text Block]

Assets and liabilities measured at fair value on a recurring basis were as follows:

	As of June 30, 2018								As of June 24, 2017
	Fair Value								Fair Value
	Measurements Using						Total Balance		Measurements Using						Total Balance
	Level 1		Level 2		Level 3				Level 1		Level 2		Level 3
	(in thousands)
Assets
Cash and cash equivalents
Agency securities	$	—	$	13,946	$	—	$	13,946	$	—	$	—	$	—	$	—
Certificates of deposit	—		6,000		—		6,000		—		—		—		—
Commercial paper	—		45,063		—		45,063		—		—		—		—
Corporate debt securities	—		3,819		—		3,819		—		—		—		—
Money market funds	98,467		—		—		98,467		952,462		—		—		952,462
U.S. Treasury securities	—		30,988		—		30,988		—		—		—		—
Short term investments
Certificates of deposit	—		52,428		—		52,428		—		—		—		—
Commercial paper	—		64,354		—		64,354		—		—		—		—
Corporate debt securities	—		367,765		—		367,765		—		—		—		—
U.S. Treasury securities	—		598,368		—		598,368		—		498,718		—		498,718
Other current assets
Foreign currency forward contracts	—		235		—		235		—		848		—		848
Total Assets	$	98,467	$	1,182,966	$	—	$	1,281,433	$	952,462	$	499,566	$	—	$	1,452,028
Liabilities
Accrued expenses
Foreign currency forward contracts	$	—	$	1,845	$	—	$	1,845	$	—	$	386	$	—	$	386
Contingent consideration	—		—		8,000		8,000		—		—		—		—
Other liabilities
Contingent consideration	—		—		8,000		8,000		—		—		—		—
Total Liabilities	$	—	$	1,845	$	16,000	$	17,845	$	—	$	386	$	—	$	386