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, 2013
Sep. 30, 2012
Jun. 30, 2013
Finite-Lived Intangible Assets, Future Amortization Expense [Abstract]      
2014 (remaining 9 months) $ 10,875,000    
2015 12,752,000    
2016 5,564,000    
2017 806,000    
2018 25,000    
Components of purchased intangible assets      
Gross Carrying Amount 282,080,000   282,080,000
Accumulated Amortization and Impairment 252,058,000   247,565,000
Total 30,022,000   34,515,000
Other intangible assets, amortization expense 4,500,000 7,200,000  
Existing technology
      
Components of purchased intangible assets      
Gross Carrying Amount 133,659,000   133,659,000
Accumulated Amortization and Impairment 120,977,000   119,106,000
Total 12,682,000   14,553,000
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 51,904,000   51,068,000
Total 5,744,000   6,580,000
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 16,303,000   15,928,000
Total 3,590,000   3,965,000
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 46,674,000   45,263,000
Total 8,006,000   9,417,000
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 16,200,000   16,200,000
Accumulated Amortization and Impairment 16,200,000   16,200,000
Total $ 0   $ 0
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