Quarterly report pursuant to Section 13 or 15(d)

Goodwill and Purchased Intangible Assets (Purchased Intangible Assets) (Details)

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Goodwill and Purchased Intangible Assets (Purchased Intangible Assets) (Details) (USD $)
 3 Months Ended
Sep. 30, 2011
Sep. 30, 2010
Jun. 30, 2011
Finite-Lived Intangible Assets, Future Amortization Expense [Abstract]      
2012 (remaining 9 months) $ 22,276,000    
2013 20,957,000    
2014 15,537,000    
2015 12,771,000    
2016 5,582,000    
2017 and thereafter 826,000    
Total 77,949,000    
Components of purchased intangible assets      
Gross Carrying Amount 283,125,000   283,125,000
Accumulated Amortization and Impairment 205,176,000   197,223,000
Net Amount 77,949,000   85,902,000
Other intangible assets, amortization expense 8,000,000 8,400,000  
Existing technology
      
Components of purchased intangible assets      
Gross Carrying Amount 134,561,000   134,561,000
Accumulated Amortization and Impairment 98,603,000   94,172,000
Net Amount 35,958,000   40,389,000
Range of Useful Lives, Minimum (in years) 4    
Range of Useful Lives, Maximum (in years) 7    
Customer relationships
      
Components of purchased intangible assets      
Gross Carrying Amount 54,823,000   54,823,000
Accumulated Amortization and Impairment 35,056,000   33,565,000
Net Amount 19,767,000   21,258,000
Range of Useful Lives, Minimum (in years) 6    
Range of Useful Lives, Maximum (in years) 7    
Patents
      
Components of purchased intangible assets      
Gross Carrying Amount 57,648,000   57,648,000
Accumulated Amortization and Impairment 42,185,000   40,591,000
Net Amount 15,463,000   17,057,000
Range of Useful Lives, Minimum (in years) 6    
Range of Useful Lives, Maximum (in years) 13    
Trade name/Trademark
      
Components of purchased intangible assets      
Gross Carrying Amount 19,893,000   19,893,000
Accumulated Amortization and Impairment 13,303,000   12,907,000
Net Amount 6,590,000   6,986,000
Range of Useful Lives, Minimum (in years) 4    
Range of Useful Lives, Maximum (in years) 10    
Other
      
Components of purchased intangible assets      
Gross Carrying Amount 16,200,000   16,200,000
Accumulated Amortization and Impairment 16,029,000   15,988,000
Net Amount $ 171,000   $ 212,000
Range of Useful Lives, Minimum (in years) 0    
Range of Useful Lives, Maximum (in years) 1