Basis of Presentation and Summary of Significant Accounting Policies (Narratives) (Details) (USD $)	0 Months Ended	12 Months Ended							12 Months Ended																	12 Months Ended				0 Months Ended
	Sep. 12, 2012 building	Jun. 30, 2013 Distribution_Channels building Investment_Securities	Jun. 30, 2012	Jul. 03, 2011	Jun. 30, 2013 Allowance for Sales Returns	Jun. 30, 2012 Allowance for Sales Returns	Jul. 03, 2011 Allowance for Sales Returns	Jun. 27, 2010 Allowance for Sales Returns	Jun. 30, 2013 Buildings	Jun. 30, 2013 Minimum	Jun. 30, 2013 Minimum Computer Equipment	Jun. 30, 2013 Minimum Software	Jun. 30, 2013 Minimum Office Equipment	Jun. 30, 2013 Minimum Furniture and Fixtures	Jun. 30, 2013 Minimum Leasehold Improvements	Jun. 30, 2013 Maximum	Jun. 30, 2013 Maximum Computer Equipment	Jun. 30, 2013 Maximum Software	Jun. 30, 2013 Maximum Office Equipment	Jun. 30, 2013 Maximum Furniture and Fixtures	Jun. 30, 2013 Maximum Leasehold Improvements	Jun. 30, 2013 Product	Jun. 30, 2012 Product	Jun. 30, 2013 Services	Jun. 30, 2012 Services	Jun. 30, 2013 Available-for-sale Securities Government and Corporate Debt Securities	Jun. 30, 2013 Marketable Securities Minimum	Jan. 31, 2012 Santa Clara Corporate Headquarters, First Property	Sep. 23, 2010 Santa Clara Corporate Headquarters, First Property	Sep. 11, 2012 Santa Clara Headquarters	Sep. 12, 2012 Lease Expiring January 31, 2013 building	Sep. 12, 2012 Lease Expiring August 31, 2014 building
Significant Accounting Policies [Line Items]
Duration of fiscal periods (in days)		364 days	364 days	371 days
Deferred revenue from customers other than distributors																						$ 3,119,000	$ 2,236,000
Deferred product revenue from customers other than distributors		41,454,000	39,328,000																					38,658,000	37,708,000
Number of distribution channels or tiers		2
Valuation allowance					777,000	1,262,000	645,000	937,000
Maturity period for investments (in months and years)																										3 years	1 year
Number of securities with unrealized losses (in securities)		34
Number of investment securities (in securities)		60
Maximum investment in one obligor or maker (percent)		10.00%
Option price for sale of campus																													24,000,000
Assets held for sale		0	17,081,000																									17,100,000
Proceeds from sale of former headquarter campus																														44,700,000
Number of campus buildings leased after sold	3																														1	2
Number of campus buildings sold	4
Number of days notice required to terminate lease	30 days
Number of buildings where lease was terminated		3
Estimated useful lives of property and equipment									25 years		3 years	3 years	5 years	5 years	2 years		4 years	4 years	7 years	7 years	10 years
Amortization expense		1,500,000	1,800,000	2,100,000
Service inventory held to support customers		6,300,000	8,000,000
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		$ 200,000	$ 500,000	$ 600,000