Investments (Tables)

6 Months Ended

12 Months Ended

Dec. 25, 2011

Jun. 26, 2011

Investments, Debt and Equity Securities [Abstract]

Summary of Available-for-Sale Securities

Available-for-sale securities as of December 25, 2011 are summarized as follows (in thousands):

	Amortized Costs		Gross Unrealized Gain		Gross Unrealized Loss			Net Unrealized Gain		Market Value
Short-Term Investments:
Corporate debt	$	42,229	$	28	$	—		$	28	$	42,257
U.S. government and agency obligations		73,020		72		(5	)		67		73,087
Total short-term investments	$	115,249	$	100	$	(5	)	$	95	$	115,344
Long-Term Investments:
U.S. government and agency obligations	$	10,046	$	—	$	—		$	—	$	10,046
Asset-backed securities		266		—		—			—		266
Total long-term investments	$	10,312	$	—	$	—		$	—	$	10,312
Equity securities	$	12,113	$	748	$	(412	)	$	336	$	12,449

Available-for-sale securities as of June 26, 2011 are summarized as follows (in thousands):

	Amortized Costs		Gross Unrealized Gain		Gross Unrealized Loss		Net Unrealized Gain		Market Value
Short-Term Investments:
Corporate debt	$	55,964	$	51	$	—	$	51	$	56,015
U.S. government and agency obligations		129,352	$	174		—		174		129,526
Total short-term investments	$	185,316	$	225	$	—	$	225	$	185,541
Long-Term Investments:
U.S. government and agency obligations	$	12,501	$	43	$	—	$	43	$	12,544
Asset-backed securities		594		187		—		187		781
Total long-term investments	$	13,095	$	230	$	—	$	230	$	13,325
Equity securities	$	12,963	$	9,473	$	—	$	9,473	$	22,436

Fair Value and Gross Unrealized Losses Related to Available-for-sale Securities

The following table summarizes the fair value and gross unrealized losses related to available-for-sale investments, aggregated by type of investment and length of time that individual securities have been held. The unrealized loss position is measured and determined at each fiscal quarter end (in thousands):

	Securities held in a loss position for less than 12 months at December 25, 2011					Securities held in a loss position for 12 months or more at December 25, 2011				Total in a loss position at December 25, 2011
	Market Value		Gross Unrealized Losses			Market Value		Gross Unrealized Losses		Market Value		Gross Unrealized Losses
U.S. government and agency obligations	$	7,985	$	(5	)	$	—	$	—	$	7,985	$	(5	)
Equity securities		3,650		(412	)		—		—		3,650		(412	)
Total	$	11,635	$	(417	)	$	—	$	—	$	11,635	$	(417	)

Amortized Cost and Estimated Fair Value of Investments by Contractual Maturity

The amortized cost and estimated fair value of investments at December 25, 2011, by contractual maturity, are as follows (in thousands):

Contractual Maturity	Amortized Cost		Estimated Market Value
Due in 1 year or less	$	115,249	$	115,344
Due in 1-2 years		10,046		10,046
Due in 2-5 years		—		—
Due after 5 years (1)		266		266
Total investments	$	125,561	$	125,656

Investments Measured at Fair Value on a Recurring Basis

The following table presents the balances of investments measured at fair value on a recurring basis as of December 25, 2011 (in thousands):

	Total		Quoted Prices in Active Markets for Identical Assets (Level 1)		Significant Other Observable Inputs (Level 2)		Significant Unobservable Inputs (Level 3)
Corporate debt	$	86,245	$	—	$	86,245	$	—
U.S. government and agency obligations		83,134		41,911		41,223		—
Asset-backed securities		266		—		—		266
Equity securities-strategic investments		12,449		12,449		—		—
Total securities at fair value	$	182,094	$	54,360	$	127,468	$	266

The following table presents the balances of investments measured at fair value on a recurring basis as of June 26, 2011 (in thousands):

	Total		Quoted Prices in Active Markets for Identical Assets (Level 1)		Significant Other Observable Inputs (Level 2)		Significant Unobservable Inputs (Level 3)
Corporate debt	$	56,015	$	—	$	56,015	$	—
U.S. government and agency obligations		142,070		79,822		62,248		—
Asset-backed securities		781		—		—		781
Equity securities-strategic investments		22,436		22,436		—		—
Total securities at fair value	$	221,302	$	102,258	$	118,263	$	781