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Basis of Presentation and Summary of Significant Accounting Policies (Narratives) (Details) (USD $) | 12 Months Ended |  |  |  |  | 12 Months Ended |  |  |  |  | 12 Months Ended |  |  |  |  | 21 Months Ended
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Jun. 30, 2012 Distribution_Channels Investment_Securities | Jul. 03, 2011 | Jun. 27, 2010 | Jun. 30, 2012 Allowance for Sales Returns | Jul. 03, 2011 Allowance for Sales Returns | Jun. 27, 2010 Allowance for Sales Returns | Jun. 28, 2009 Allowance for Sales Returns | Jun. 30, 2012 Buildings | Jun. 30, 2012 Office Equipment | Jun. 30, 2012 Furniture and Fixtures | Jun. 30, 2012 Minimum | Jun. 30, 2012 Minimum Computer Equipment | Jun. 30, 2012 Minimum Software | Jun. 30, 2012 Minimum Leasehold Improvements | Jun. 30, 2012 Maximum | Jun. 30, 2012 Maximum Computer Equipment | Jun. 30, 2012 Maximum Software | Jun. 30, 2012 Maximum Leasehold Improvements | Jun. 30, 2012 Product | Jul. 03, 2011 Product | Jun. 30, 2012 Services | Jul. 03, 2011 Services | Jun. 30, 2012 Cash Equivalents Maximum | Jun. 30, 2012 Short-term Investments Minimum | Jun. 30, 2012 Short-term Investments Maximum | Jun. 30, 2012 Marketable Securities Minimum | Jun. 30, 2012 Available-for-sale Securities Government and Corporate Debt Securities | Jan. 31, 2012 Santa Clara Corporate Headquarters, First Property | Sep. 23, 2010 Santa Clara Corporate Headquarters, First Property | Jun. 30, 2012 Santa Clara Corporate Headquarters, Second Property | Jan. 25, 2012 Santa Clara Corporate Headquarters, Second Property | Jun. 30, 2012 Other Current Liabilities Santa Clara Headquarters
Significant Accounting Policies [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Duration of fiscal periods (in days) | 364 days | 371 days | 364 days |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Deferred revenue from customers other than distributors |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 2,236,000 | $ 1,984,000 |  |  |  |  |  |  |  |  |  |  |  |
Deferred product revenue from customers other than distributors | 39,328,000 | 36,973,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 1,620,000 | 948,000 | 37,708,000 | 36,025,000 |  |  |  |  |  |  |  |  |  |
Number of distribution channels or tiers | 2 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Valuation allowance |  |  |  | 1,262,000 | 645,000 | 937,000 | 930,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Maturity period for investments (in months and years) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 3 months | 3 months | 1 year | 1 year | 3 years |  |  |  |  |
Number of securities with unrealized losses (in securities) | 21 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Number of investment securities (in securities) | 55 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Maximum investment in one obligor or maker (percent) | 10.00% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Sales price of property |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 24,000,000 |  | 24,500,000 |
Net book value of assets held for sale | 17,081,000 | 0 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 17,100,000 |  | 16,000,000 |  |
Estimated useful lives of property and equipment |  |  |  |  |  |  |  | 25 years | 3 years | 3 years |  | 1 year | 1 year | 2 years |  | 4 years | 4 years | 10 years |  |  |  |  |  |  |  |  |  |  |  |  |  |
Received option payments | 1,001,000 | 1,000,000 | 0 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 2,000,000
Amortization expense | 1,800,000 | 2,100,000 | 1,300,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Extended warranty contracts period (in years) |  |  |  |  |  |  |  |  |  |  | 1 year |  |  |  | 5 years |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Standard hardware warranty period (in months) | 12 months |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Standard software warranty period (in days) | 90 days |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Limited lifetime hardware warranty maximum period after end of sale of product (in years) | 5 years |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Advertising expenses | $ 500,000 | $ 600,000 | $ 100,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |

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