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 9 Months Ended
Mar. 31, 2012
Mar. 31, 2011
Mar. 31, 2012
Mar. 31, 2011
Jun. 30, 2011
Finite-Lived Intangible Assets, Future Amortization Expense [Abstract]          
2012 (remaining 3 months) $ 7,267,000        
2013 20,914,000        
2014 15,537,000        
2015 12,771,000        
2016 5,582,000        
2017 and thereafter 826,000        
Total 62,897,000        
Components of purchased intangible assets          
Gross Carrying Amount 283,125,000   283,125,000   283,125,000
Accumulated Amortization and Impairment 220,228,000   220,228,000   197,223,000
Net Amount 62,897,000   62,897,000   85,902,000
Other intangible assets, amortization expense 7,300,000 8,000,000 23,000,000 24,900,000  
Existing technology
          
Components of purchased intangible assets          
Gross Carrying Amount 134,561,000   134,561,000   134,561,000
Accumulated Amortization and Impairment 106,568,000   106,568,000   94,172,000
Net Amount 27,993,000   27,993,000   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   54,823,000
Accumulated Amortization and Impairment 38,035,000   38,035,000   33,565,000
Net Amount 16,788,000   16,788,000   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   57,648,000
Accumulated Amortization and Impairment 45,372,000   45,372,000   40,591,000
Net Amount 12,276,000   12,276,000   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   19,893,000
Accumulated Amortization and Impairment 14,053,000   14,053,000   12,907,000
Net Amount 5,840,000   5,840,000   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   16,200,000
Accumulated Amortization and Impairment 16,200,000   16,200,000   15,988,000
Net Amount $ 0   $ 0   $ 212,000
Range of Useful Lives, Minimum (in years) 0        
Range of Useful Lives, Maximum (in years) 1