Investments

Investments consist of municipal bonds, corporate bonds, commercial paper and certificates of deposit. All short-term investments are classified as available-for-sale. Other long-term investments consist of the Company's ownership interest in Lextar Electronics Corporation.

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



	September 25, 2016
	Amortized Cost		Gross Unrealized Gains		Gross Unrealized Losses			Estimated Fair Value
Municipal bonds		$183,585		$2,775		($50	)		$186,310
Corporate bonds	165,897		3,347		(43		)	169,201
Non-U.S. certificates of deposit	93,103		—		—			93,103
U.S. certificates of deposit	8,791		—		—			8,791
Commercial paper		$3,802		$—		$—		3,802
Total short-term investments		$455,178		$6,122		($93	)		$461,207

	June 26, 2016
	Amortized Cost		Gross Unrealized Gains		Gross Unrealized Losses			Estimated Fair Value
Municipal bonds		$186,893		$3,562		($15	)		$190,440
Corporate bonds	165,766		3,074		(73		)	168,767
Non-U.S. certificates of deposit	73,127		—		—			73,127
U.S. certificates of deposit	3,500		—		—			3,500
Commercial paper	3,317		—		—			3,317
Total short-term investments		$432,603		$6,636		($88	)		$439,151

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):



	September 25, 2016
	Less than 12 Months					Greater than 12 Months					Total
	Fair Value		Unrealized Loss			Fair Value		Unrealized Loss			Fair Value		Unrealized Loss
Municipal bonds		$17,003		($41	)		$1,620		($9	)		$18,623		($50	)
Corporate bonds	12,632		(30		)	2,487		(13		)	15,119		(43		)
Total		$29,635		($71	)		$4,107		($22	)		$33,742		($93	)
Number of securities with an unrealized loss			30					3					33

	June 26, 2016
	Less than 12 Months					Greater than 12 Months					Total
	Fair Value		Unrealized Loss			Fair Value		Unrealized Loss			Fair Value		Unrealized Loss
Municipal bonds		$2,936		($9	)		$3,535		($6	)		$6,471		($15	)
Corporate bonds	27,578		(73		)	—		—			27,578		(73		)
Total		$30,514		($82	)		$3,535		($6	)		$34,049		($88	)
Number of securities with an unrealized loss			22					3					25

The Company utilizes specific identification in computing realized gains and losses on the sale of investments. Realized gains and losses from the sale of investments are included in Non-operating expense in the consolidated statements of income (loss) and unrealized gains and losses are included as a separate component of equity, net of tax, unless the loss is determined to be other-than-temporary.

The Company evaluates its investments for possible impairment or a decline in fair value below cost basis that is deemed to be other-than-temporary on a periodic basis. It considers such factors as the length of time and extent to which the fair value has been below the cost basis, the financial condition of the investee, and its ability and intent to hold the investment for a period of time that may be sufficient for an anticipated full recovery in market value. Accordingly, the Company considered declines in its investments to be temporary in nature, and did not consider its securities to be impaired as of September 25, 2016 and June 26, 2016.

The contractual maturities of short-term investments as of September 25, 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		$43,513		$110,598		$32,199		$—		$186,310
Corporate bonds	22,617		108,207		38,377		—		169,201
Non-U.S. certificates of deposit	93,103		—		—		—		93,103
U.S. certificates of deposit	5,791		3,000		—		—		8,791
Commercial paper		$3,802		$—		$—		$—	3,802
Total short-term investments		$168,826		$221,805		$70,576		$—		$461,207