Investments, Available-for-sale Securities (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended
Sep. 25, 2011	Jun. 26, 2011
Equity Securities [Member]
Schedule of Available-for-sale Securities [Line Items]
Amortized Costs	$ 12,428	$ 12,963
Gross Unrealized Gain	2,855	9,473
Gross Unrealized Loss	(304)
Net Unrealized Gain (Loss)	2,551	9,473
Market Value	14,979	22,436
Number of investments in publicly traded foreign companies	3
Short-Term Investment [Member]
Schedule of Available-for-sale Securities [Line Items]
Amortized Costs	172,088	185,316
Gross Unrealized Gain	163	225
Gross Unrealized Loss	(3)
Net Unrealized Gain (Loss)	160	225
Market Value	172,248	185,541
Short-Term Investment [Member] \| Corporate Debt [Member]
Schedule of Available-for-sale Securities [Line Items]
Amortized Costs	67,875	55,964
Gross Unrealized Gain	48	51
Net Unrealized Gain (Loss)	48	51
Market Value	67,923	56,015
Short-Term Investment [Member] \| U.S. Government and Agency Obligations [Member]
Schedule of Available-for-sale Securities [Line Items]
Amortized Costs	104,213	129,352
Gross Unrealized Gain	115	174
Gross Unrealized Loss	(3)
Net Unrealized Gain (Loss)	112	174
Market Value	104,325	129,526
Long-Term Investment [Member]
Schedule of Available-for-sale Securities [Line Items]
Amortized Costs	4,803	13,095
Gross Unrealized Gain	16	230
Gross Unrealized Loss	(4)
Net Unrealized Gain (Loss)	12	230
Market Value	4,815	13,325
Long-Term Investment [Member] \| U.S. Government and Agency Obligations [Member]
Schedule of Available-for-sale Securities [Line Items]
Amortized Costs	4,497	12,501
Gross Unrealized Gain	16	43
Net Unrealized Gain (Loss)	16	43
Market Value	4,513	12,544
Long-Term Investment [Member] \| Asset-backed Securities [Member]
Schedule of Available-for-sale Securities [Line Items]
Amortized Costs	306	594
Gross Unrealized Gain		187
Gross Unrealized Loss	(4)
Net Unrealized Gain (Loss)	(4)	187
Market Value	$ 302	$ 781

This item represents the cost of debt and equity securities, which are categorized neither as held-to-maturity nor trading, net of adjustments including accretion, amortization, collection of cash, previous other-than-temporary impairments recognized in earnings (less any cumulative-effect adjustments recognized, as defined), and fair value hedge accounting adjustments, if any.

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This element represents the portion of the balance sheet assertion valued at fair value by the entity whether such amount is presented as a separate caption or as a parenthetical disclosure. Additionally, this element may be used in connection with the fair value disclosures required in the footnote disclosures to the financial statements. The element may be used in both the balance sheet and disclosure in the same submission. This item represents Available-for-sale Securities which consist of all investments in certain debt and equity securities neither classified as trading or held-to-maturity securities. A debt security represents a creditor relationship with an enterprise. Debt securities include, among other items, US Treasury securities, US government securities, municipal securities, corporate bonds, convertible debt, commercial paper, and all securitized debt instruments. An equity security represents an ownership interest in an enterprise or the right to acquire or dispose of an ownership interest in an enterprise at fixed or determinable prices. Equity securities include, among other things, common stock, certain preferred stock, warrant rights, call options, and put options, but do not include convertible debt. An entity may opt to provide the reader with additional narrative text to better understand the nature of investments in debt and equity securities which are categorized as Available-for-sale.

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- Definition

This item represents the gross unrealized gains for securities, at a point in time, which are categorized neither as held-to-maturity nor trading securities.

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