Investments (Tables)

9 Months Ended

Mar. 27, 2016

Investments, Debt and Equity Securities [Abstract]

Summary of Short-term Investments by Type

The following tables summarize short-term investments (in thousands):

	March 27, 2016
	Amortized Cost		Gross Unrealized Gains		Gross Unrealized Losses			Estimated Fair Value
Municipal bonds		$188,312		$2,563		($50	)		$190,825
Corporate bonds	163,898		1,976		(311		)	165,563
U.S. certificates of deposit	3,500		—		—			3,500
Non-U.S. certificates of deposit	145,000		—		—			145,000
Total short-term investments		$500,710		$4,539		($361	)		$504,888
	June 28, 2015
	Amortized Cost		Gross Unrealized Gains		Gross Unrealized Losses			Estimated Fair Value
Municipal bonds		$194,123		$988		($341	)		$194,770
Corporate bonds	152,831		832		(158		)	153,505
U.S. certificates of deposit	—		—		—			—
Non-U.S. certificates of deposit	225,206		—		—			225,206
Total short-term investments		$572,160		$1,820		($499	)		$573,481

Summary of Gross Unrealized Losses and Estimated Fair Value of Short-term Investments, Aggregated by Investment Type and Length of Time

The following tables present the gross unrealized losses and estimated fair value of the Company's short-term investments, aggregated by investment type and the length of time that individual securities have been in a continuous unrealized loss position (in thousands, except numbers of securities):

	March 27, 2016
	Less than 12 Months					Greater than 12 Months					Total
	Fair Value		Unrealized Loss			Fair Value		Unrealized Loss			Fair Value		Unrealized Loss
Municipal bonds		$12,447		($35	)		$5,286		($15	)		$17,733		($50	)
Corporate bonds	49,798		(311		)	—		—			49,798		(311		)
Total		$62,245		($346	)		$5,286		($15	)		$67,531		($361	)
Number of securities with an unrealized loss			37					2					39
	June 28, 2015
	Less than 12 Months					Greater than 12 Months					Total
	Fair Value		Unrealized Loss			Fair Value		Unrealized Loss			Fair Value		Unrealized Loss
Municipal bonds		$53,204		($341	)		$—		$—			$53,204		($341	)
Corporate bonds	46,636		(143		)	1,812		(15		)	48,448		(158		)
Total		$99,840		($484	)		$1,812		($15	)		$101,652		($499	)
Number of securities with an unrealized loss			54					1					55

Contractual Maturities of Short-term Investments by Type

The contractual maturities of short-term investments as of March 27, 2016 were as follows (in thousands):

	Within One Year		After One, Within Five Years		After Five, Within Ten Years		After Ten Years		Total
Municipal bonds		$26,540		$130,981		$33,305		$—		$190,826
Corporate bonds	25,267		104,509		35,786		—		165,562
U.S. certificates of deposit	—		3,500		—		—		3,500
Non-U.S. certificates of deposit	145,000		—		—		—		145,000
Total short-term investments		$196,807		$238,990		$69,091		$—		$504,888