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, 2014
Sep. 30, 2013
Jun. 30, 2014
Components of purchased intangible assets      
Gross Carrying Amount $ 291,479,000   $ 291,479,000
Accumulated Amortization and Impairment 267,855,000   263,782,000
Total 23,624,000   27,697,000
Intangible assets, amortization expense 4,100,000 4,500,000  
Finite-Lived Intangible Assets, Future Amortization Expense [Abstract]      
2015 (remaining 9 months) 11,729,000    
2016 7,564,000    
2017 2,806,000    
2018 1,525,000    
Existing technology
      
Components of purchased intangible assets      
Gross Carrying Amount 141,659,000   141,659,000
Accumulated Amortization and Impairment 128,618,000   126,567,000
Total 13,041,000   15,092,000
Existing technology | Minimum
      
Components of purchased intangible assets      
Range of Useful Lives 4 years    
Existing technology | Maximum
      
Components of purchased intangible assets      
Range of Useful Lives 7 years    
Patents
      
Components of purchased intangible assets      
Gross Carrying Amount 57,648,000   57,648,000
Accumulated Amortization and Impairment 55,048,000   54,398,000
Total 2,600,000   3,250,000
Patents | Minimum
      
Components of purchased intangible assets      
Range of Useful Lives 6 years    
Patents | Maximum
      
Components of purchased intangible assets      
Range of Useful Lives 13 years    
Trade name/Trademark
      
Components of purchased intangible assets      
Gross Carrying Amount 19,893,000   19,893,000
Accumulated Amortization and Impairment 17,802,000   17,427,000
Total 2,091,000   2,466,000
Trade name/Trademark | Minimum
      
Components of purchased intangible assets      
Range of Useful Lives 4 years    
Trade name/Trademark | Maximum
      
Components of purchased intangible assets      
Range of Useful Lives 10 years    
Customer relationships
      
Components of purchased intangible assets      
Gross Carrying Amount 54,680,000   54,680,000
Accumulated Amortization and Impairment 49,636,000   48,915,000
Total 5,044,000   5,765,000
Customer relationships | Minimum
      
Components of purchased intangible assets      
Range of Useful Lives 6 years    
Customer relationships | Maximum
      
Components of purchased intangible assets      
Range of Useful Lives 7 years    
Other
      
Components of purchased intangible assets      
Gross Carrying Amount 17,599,000   17,599,000
Accumulated Amortization and Impairment 16,751,000   16,475,000
Total $ 848,000   $ 1,124,000
Other | Minimum
      
Components of purchased intangible assets      
Range of Useful Lives 0 years    
Other | Maximum
      
Components of purchased intangible assets      
Range of Useful Lives 1 year