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 6 Months Ended
Dec. 31, 2011
Dec. 31, 2010
Dec. 31, 2011
Dec. 31, 2010
Jun. 30, 2011
Finite-Lived Intangible Assets, Future Amortization Expense [Abstract]          
2012 (remaining 6 months) $ 14,588,000        
2013 20,914,000        
2014 15,537,000        
2015 12,771,000        
2016 5,582,000        
2017 and thereafter 826,000        
Total 70,218,000        
Components of purchased intangible assets          
Gross Carrying Amount 283,125,000   283,125,000   283,125,000
Accumulated Amortization and Impairment 212,907,000   212,907,000   197,223,000
Net Amount 70,218,000   70,218,000   85,902,000
Other intangible assets, amortization expense 7,700,000 8,500,000 15,700,000 16,900,000  
Existing technology
          
Components of purchased intangible assets          
Gross Carrying Amount 134,561,000   134,561,000   134,561,000
Accumulated Amortization and Impairment 102,705,000   102,705,000   94,172,000
Net Amount 31,856,000   31,856,000   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 36,546,000   36,546,000   33,565,000
Net Amount 18,277,000   18,277,000   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 43,778,000   43,778,000   40,591,000
Net Amount 13,870,000   13,870,000   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 13,678,000   13,678,000   12,907,000
Net Amount 6,215,000   6,215,000   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