Basis of Presentation and Summary of Significant Accounting Policies (Narratives) (Details) (USD $)	12 Months Ended							12 Months Ended															12 Months Ended									21 Months Ended
	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